Document:

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EXHIBIT 10.6

LEASE

PRESENT when the Common Seal of                    /s/ [signature appears here]
                                                   ----------------------------
LOGITECH IRELAND LIMITED                           Director

                                                   /s/ [signature appears here]
was affixed hereto:-                               ----------------------------
                                                   Director

PRESENT when the Common Seal                       /s/ James N. Chiavetta
of OGDEN ATLANTIC DESIGN (EUROPE) LIMITED          ----------------------------
was affixed hereto:-                               Director

                                                   /s/ [signature appears here]
                                                   ----------------------------
                                                   Director

<PAGE>

                        Dated _____ day of ______ 1995

                        LOGITECH IRELAND LIMITED

                        TO

                        OGDEN ATLANTIC DESIGN (EUROPE) LIMITED

                        LEASE

                        MATHESON ORMSBY PRENTICE
                        Solicitors
                        3 Burlington Road
                        Dublin 4
<PAGE>

                                 LAND REGISTRY

COUNTY Cork                           FOLIO  45419F

THIS LEASE made the 9th day of May One Thousand Nine Hundred Ninety Five BETWEEN
Logitech Ireland Limited having its registered office at Cork Technology Park,
Model Farm Road, Cork (hereinafter called "the Landlord") of the One Part and
Ogden Atlantic Design (Europe) Limited having its registered office at 2
Harbourmaster Place Custom House Dock, Dublin 1 (hereinafter called "the
Tenant") of the Other Part.

WITNESSETH as follows:

A    In this Lease unless the context otherwise requires the following
     expressions have the meaning assigned to them respectively that is to say:

     "The Landlord" shall include the owner from time to time of the immediate
     reversion of the premises hereby demised expectant on the expiration or
     earlier determination of the term hereby granted.

     "The Tenant" shall include the Tenant's successors in title and permitted
     assigns.

     "The demised premises" means the premises hereby demised by the Landlord to
     the Tenant
<PAGE>

     (as more particularly described in the first schedule hereto) and where the
     context so admits include all easements rights and privileges appurtenant
     thereto and all buildings thereon to include the fixtures fittings and
     rights hereby demised and the roof and exterior walls and a moiety divided
     medially of all party walls.

     "Insured risks" means all or any loss or damage or prospective loss or
     damage by fire waters flooding storm tempest lighting explosion earthquake
     impact aircraft and articles dropped therefrom and such further risks or
     perils to or in connection with the demised premises and the fixtures and
     fittings thereof and such fees expenses charges and monies of and
     incidental to the rebuilding reinstatement or loss (whether total or
     otherwise) of the demised premises or any part thereof as the Landlord may
     from time to time reasonably deem it desirable to insure against including
     (but not by way of exception):-

     (i)    Loss of rent from time to time payable out of the demised premises
     for three years or such longer period as the Landlord may from time to time
     reasonably deem to be necessary

     (ii)   all expenditure or anticipated expenditure in the demolition and
     clearance of the demised premises and Value Added Tax thereon (if any)

     (iii)  all stamp duties, Value Added Tax and other taxes or duties exigible
     on any Building or like Contract as may be entered into relative to the
     reconstruction reinstatement or repair of the demised premises resulting
     from the destruction loss or damage thereof or thereto from any of the
     risks or perils aforesaid;

     (iv)   a sum equivalent to 15% of the full replacement and reinstatement
     value of the demised premises in respect of Architects' Quantity Surveyor's
     Engineers' and other professional and Consultancy fees (and Value Added Tax
     thereon)
<PAGE>

     (v)    Property owners and other liability of the Landlord arising out of
     or in relation to the demised premises.

     "The Town Planning Acts" shall be deemed to include the Local Government
     (Planning and Development) Acts 1963 to 1990 and any Act or Acts for the
     time being in force amending extending or replacing the same and any Order
     Regulations or Directions issued under or by virtue of the said Acts or any
     Act for the time being in force amending or replacing the same and includes
     all Building Bye Laws Regulations (or any Act for the time being in force
     amending extending or replacing the same)

     Words importing the masculine gender only include the feminine gender.

     Words importing the singular number only include the plural number and vice
     versa and where there are two or more persons included in the expressions
     the Landlord or the Tenant covenants expressed to be made by "The Landlord"
     or "The Tenant" shall be deemed to be made by such persons jointly and
     severally.

     Any notice required or authorised to be served by this Lease shall be
     sufficiently served in manner provided by Section 67 of the Conveyancing
     Act of 1881.

     All notices, requests, demands and other communications under this Lease
     shall be in writing and shall be deemed to have been given if hand
     delivered or mailed certified mail, return receipt requested, or by
     overnight courier service: -
<PAGE>

     (a)  If to the Tenant            OGDEN ATLANTIC (EUROPE) LIMITED
                                      5601 Wilkinson Boulevard
                                      Charlotte, North Carolina 28208
                                      Attention: James N Chiavetta, President.

     (b)  With a copy to              ODGEN SERVICES CO
                                      Two Pennsylvania Plaza
                                      New York, New York 10121
                                      Attention: General Counsel

     (c)  If to the Landlord          LOGITECH INC
                                      6505 Kaiser Drive
                                      Fremont, California 94555
                                      Attention:

     (d)  With a copy to Manager - Ireland
                        Logitech Ireland Services Limited
                        Cork Technology Park
                        Model Farm Road
                        Cork

     All notices delivered by hand shall be effective upon delivery and all
     notices mailed certified mail, return receipt requested, or by overnight
     courier service shall be effective when received, as indicated on the
     return receipt.

     The section headings shall not affect the construction of these presents.

B    All rights of entry exercisable hereunder by the Landlord shall extend to
     and include the architects engineers surveyors servants contractors agents
     licensees and employees (collectively the Landlord's appointees) of the
     Landlord, save in the case of emergency such rights of entry shall only be
     exercised after giving the Tenant 48 hours notice in writing and the
     Landlord and/or the Landlord's appointees must be escorted by a nominee of
     the Tenant (if practical) when exercising all rights of entry.
<PAGE>

C    In consideration of the rent and the other payments and the covenants on
     the part of the Tenant hereinafter reserved and contained the Landlord
     hereby demises unto the Tenant ALL THAT the demised premises EXCEPTING AND
     RESERVING as specified in the Second Schedule hereto together with the
     rights specified in the Third Schedule hereto and subject also to a lease
     granted in favour of E.S.B. in respect of the sub-station on the demised
     premises shown coloured blue on Plan 1 annexed hereto including a right of
     way thereto coloured green on the said Plan TO HOLD the demised premises
     subject as aforesaid unto the Tenant for the term of 9 years and 11 months
                                                       ------------------------
     from the 9th day of  May 19 1995. YIELDING AND PAYING therefor and thereout
     --------------------------------
     during each year of the first five years of the said term the yearly rent
     of the Irish Pound equivalent of US $ 225,000 to be calculated on a monthly
     basis as hereinafter provided and thereafter during each of the successive
     periods of five years of which the first shall begin on the 9th day of May
     2000 a rent equal to (a) the rent payable hereunder during the preceding
     period or (b) such revised rent as may from time to time be ascertained in
     accordance with the provisions in that behalf contained in the Fourth
     Schedule hereto (whichever shall be the greater) AND the rent in respect of
     each year of the said term is to be paid by monthly payments in advance on
     the first day of each month of the Irish Pound equivalent of US$ 18,750 as
         -------------------------------------------------------------------
     calculated by reference to the exchange rate as published in the Wall
     Street Journal on the day before the first day of each month of the term,
     the first payment of such rent to be made on the execution hereof and shall
     be in respect of the period from the 9th day of May 1995 to the 30th day of
     May 1995 and all such rents to be payable by Banker's Order or otherwise as
     the Landlord shall from time to time direct.
<PAGE>

D    THE Tenant HEREBY COVENANTS with the Landlord as follows:

TO PAY RENT
-----------

(1)  To pay to the Landlord during the continuance of this demise without any
     deduction or set off the said yearly rent hereby reserved and made payable
     at the times and in the manner aforesaid

TO PAY RATES
------------

(2)  To pay and discharge all existing and future rates taxes duties charges
     assessments impositions and outgoings whatsoever (whether parliamentary
     municipal parochial local or of any other description) which are now or may
     at any time hereafter be assessed charged or imposed upon or payable in
     respect of the demised premises or any rent issuing thereout or assessed
     charged or imposed upon or payable by the Owner Landlord Tenant or Occupier
     in respect thereof except Landlord's Income and Capital Taxes arising from
     its interest in the demised premises.

TO CONTRIBUTE TO INSURANCE PREMIUMS
-----------------------------------

(3)  To pay to the Landlord on demand all moneys which the Landlord shall from
     time to time pay by way of premium for keeping insured the demised premises
     from and against loss or damage by or otherwise in connection with the
     Insured Risks or any of them.

(4)  To pay to the Landlord annually on demand the entire of all sums which the
     Landlord shall pay or expend under Lease dated 3 July 1990 between IDA and
     the Landlord (The IDA
<PAGE>

     Lease) each year in contributing to the cost and expense of all necessary
     maintenance, repair and upkeep (and operating cost where applicable) of
     access roads, footpaths, common areas, drainage and water services and
     public lighting.

(5)  To discharge all electricity, gas, heating, air conditioning, telephone and
     all other such charges incurred in respect of the demised premises and
     further to discharge all costs incurred in providing canteen facilities,
     office cleaning and internal security.

INTEREST ON PAYMENTS IN ARREAR
------------------------------

(6)  If the Tenant shall fail to pay the rent hereinbefore reserved or any other
     sum or sums payable hereunder within 21 days of the day and in the manner
     herein prescribed for payment of same such unpaid sums shall bear interest
     from and including the 21st day after the day or days on which same shall
     have become due to the date of actual payment at the DIBOR Rate in the
     Republic of Ireland at the date when such sum or sums become due plus three
     per cent or if there shall be no such rate the corresponding or nearest
     appropriate rate thereto.

TO COMPLY WITH NOTICES
----------------------

(7)  A.   At the Tenant's own expense to comply with every notice order
          requisition direction or other thing given made or issued by a
          competent authority affecting the demised premises for which the
          Tenant shall be liable and have notice of whether the same is
          addressed to or served upon the owner landlord lessee Tenant
          or occupier or any other person whatsoever and deliver to the Landlord
          a copy of
<PAGE>

          every notice order requisition direction or other thing given made
          or issued by a competent authority affecting the demised premises as
          soon as practicable after the Tenant becomes aware thereof.

B.   Clause (7) shall not apply to any statutory notice requiring the temporary
     first floor over the IQC Room situated in the demised premises and the two
     storey engineering office above the software duplication area of the
     demised premises to comply with such notice. In the event of such notice
     being served on the Tenant the Tenant should immediately forward the notice
     to the Landlord who shall within a reasonable time period carry out any
     necessary works.

TO COMPLY WITH ENACTMENTS
-------------------------

(8)  A.   At the Tenant's own expense to execute all works and to provide and
          maintain all arrangements which by or under any Act of Parliament or
          of the Oireachtas already passed or any Act of the Oireachtas which
          may hereafter be passed or Law of the European Community now or
          hereafter to be passed and any instrument directive regulation or bye-
          law made thereunder which has force in the state or by any Government
          Department Local Authority or other Public Authority or duly
          authorised Officer or Court of competent jurisdiction acting under or
          in pursuance of any enactment or otherwise are or may be directed or
          required to be executed provided or maintained at any time during this
          demise upon or in respect of the demised premises or any part thereof
          or in respect of the user thereof and not to do or omit or suffer to
          be done or omitted in or about the demised premises any act
<PAGE>

          or thing by reason of which the Landlord or the Tenant may under any
          enactment incur or become liable to pay any penalty damages
          compensation costs charges or expenses and to indemnify and keep
          indemnified the Landlord against all or any claims demands and
          liability in respect thereof.

     B.   Clause (8)A shall not apply to the temporary first floor over the IQC
          room situated in the demised premises and the two storey engineering
          office above the software duplication area of the demised premises.

TO REPAIR AND PAINT INTERIOR AND EXTERIOR
-----------------------------------------

(9)  (a)  Well and substantially to repair cleanse maintain amend and keep the
          demised premises and all buildings which may at any time during the
          said term be erected on and all additions made to the demised premises
          and the fixtures therein and the walls, half of any party walls,
          fences roads sewers drains water mains fire mains hydrants and
          appurtenances thereof with all necessary reparations cleansing and
          amendments whatsoever.

     (b)  To paint the outside wood iron and other work of the demised premises
          and all new buildings which may at any time during the said term be
          erected on and all additions to the demised premises previously or
          usually painted or which ought to be painted with two coats at least
          of good oil and white lead paint in a proper and workmanlike manner
          once in every three years of the said term and also during the last
          year thereof (however determined) and at the same time with every such

<PAGE>

          painting to make good the rough cast or stucco work where necessary.

     (c)  To paint all the inside wood iron and other work previously or usually
          painted or which ought to be painted of the demised premises and all
          new buildings which may at any time during the said term be erected on
          and all additions to the demised premises with two coats at least of
          good oil and white lead paint in a proper and workmanlike manner once
          in every five years of the said term and also during the last year
          thereof (however determined) and at the same time with every such
          painting to paper whitewash distemper colour and decorate the parts of
          the interior of the demised premises and new buildings and additions
          previously or usually or which ought to be done.

NOT TO OVERLOAD
---------------

(10) (i)  Not to install or suffer to be installed any machinery on the demised
          premises which shall be unreasonably noisy or cause unreasonable
          vibration or which shall be either dangerous or a nuisance to the
          Landlord or to adjoining owners or occupiers or to any other party or
          the neighbourhood.

     (ii) Not to place or permit to be placed anything whatsoever on the roof of
          the demised premises or any part thereof nor to overload any floor
          area of the demised premises nor to suspend heavy objects from the
          ceilings or walls thereof. The Tenant shall seek professional advice
          at the Tenants own expense to ensure that there shall not be an
          infringement of this covenant.
<PAGE>

CONVEYANCING ACT NOTICES
------------------------

(11) To pay all expenses (including Solicitors' costs and Surveyors' fee) which
     may be incurred by the Landlord incidental to the preparation and service
     of a notice under Section 14 of the Conveyancing and Law of Property Act
     1881 or any Act or Acts amending or extending the same notwithstanding that
     forfeiture is avoided otherwise than by relief granted by the Court or in
     the preparation and service of any notices under clause (11) hereunder.

RIGHT OF ENTRY
--------------

(12) To permit the Landlord or the Landlord's Agents at any time or times after
     due notice in writing except in cases of emergency to enter and examine the
     demised premises to ensure that nothing has been done therein that
     constitutes a breach of any of the covenants herein contained and also to
     examine the state and condition of the demised premises and the Tenant will
     remedy repair and make good all breaches and defects of which notice in
     writing shall be given by the Landlord to the Tenant which in the
     reasonable opinion of the Landlord is in need of remedy, repair or making
     good and which the Tenant shall be liable to remedy repair or make good
     under the covenants herein contained within three calendar months after the
     giving of such notice and in case the Tenant shall make default in so doing
     it shall be lawful (but not obligatory) for the Landlord to enter upon the
     demised premises and to repair cleanse maintain and amend the same
     accordingly and all expenses incurred thereby (including Surveyor's and
     other professional fees) shall on demand be paid by the Tenant to the
     Landlord and if not so paid be recoverable by the Landlord as liquidated
     damages and the Tenant hereby irrevocably appoints the Landlord
<PAGE>

     to be the agent of the Tenant throughout the said term for the purpose of
     entering on inspecting and viewing the condition of any parts of the
     demised premises not at the time of such inspection in the occupation of
     the Tenant.

TO PERMIT VIEWING
-----------------

(13) (a)  To permit the Landlord during the six calendar months immediately
          preceding the expiration or sooner determination of the said term to
          affix and retain without interference upon any part of the demised
          premises a notice for re-letting or selling the same and to permit all
          persons with written authority from the Landlord or from the
          Landlord's agent at reasonable times of the day to enter upon and view
          the demised premises.

     (b)  At all convenient hours in the daytime on twenty four hours' notice
          being given to permit all prospective purchasers or dealers in the
          reversionary interest of the Landlord by order in writing of the
          Landlord or his Agents to view the demised premises without
          interruption but so that no undue interference is caused to the
          business of the Tenant.

NO ALTERATIONS
--------------

(14) Not without the consent in writing of the Landlord or the Landlords Agent
     which shall not be unreasonably withheld or delayed first obtained nor
     except in accordance with plans and specifications previously submitted to
     and approved by the landlord nor except to the satisfaction of the Landlord
     to erect or suffer to be erected any new building, erection,
<PAGE>

     wall, fencing or railing on the demised premises or make any alterations or
     additions whatsoever either externally or internally in or to the demised
     premises or any building or erection which may be erected thereon.

RESTRICTIONS OF USE
-------------------

(15) Not without the consent in writing of the Landlord which shall not be
     unreasonably withheld or delayed to use or suffer the demised premises or
     any part thereof to be used for residential purposes nor for public
     charitable or institutional purposes nor for any illegal or immoral purpose
     and not to use the demised premises save in accordance with plans accepted
     by the Industrial Development Agency and not to use the areas referred to
     in the Third Schedule hereto for storage of goods or any materials
     equipment plant bins crates cartons boxes or receptacles for waste or other
     item which is or is likely to be unclean, unsightly or in any way
     detrimental to the amenity of the area and adjoining premises.

TO COMPLY WITH PLANNING
-----------------------

(16) (a)  Not without the consent in writing of the Landlord which shall not be
          unreasonably withheld or delayed to carry out or suffer to be carried
          out in or over or under the demised premises any development as
          defined by Section 3 of the Local Government (Planning and
          Development) Act, 1963 or by any act amending or extending the same.

     (b)  Not to do or omit or suffer to be done or omitted anything on the
          demised premises
<PAGE>

          the doing or omission of which shall be a contravention of the Town
          Planning Acts and to comply with any notice in relation to the demised
          premises lawfully served by any Planning Authority under the said Acts
          and to indemnify the Landlord against all liability in respect
          thereof.

     (c)  To give notice forthwith to the Landlord of any notice order or
          proposal for a notice or order served on the Tenant under The Town
          Planning Acts and if so required by the Landlord to produce the same
          and at the request of the Landlord and at the cost of the Tenant to
          make or join in making such objections or representations in respect
          of any such notice order or proposal as the landlord may require.

     (d)  On the request in writing of the Landlord or his Agent forthwith to
          pull down and remove any building erection alteration or addition
          erected placed or made in breach of any of the foregoing covenants and
          if any portion of the demised premises has been altered pulled down or
          removed in breach of any of the foregoing covenants upon such request
          in writing as herein provided forthwith to amend restore replace or
          rebuild the demised premises according to the original plans and
          elevations thereof.

NOT TO VITIATE INSURANCE
------------------------

(17) (a)  Not to carry on or suffer upon the demised premises any trade or
          occupation in such a manner as or do or suffer any thing which may
          make void or voidable any
<PAGE>

          policy of insurance effected pursuant to this lease or which may
          render any increased premium to be payable for the insurance thereof
          or the rent thereout and to repay to the Landlord on demand all sums
          incurred by way of increased premiums and all expenses suffered by the
          Landlord in consequence of the breach of provisions contained in this
          sub-clause.

     (b)  In the event of the demised premises or any part thereof being
          destroyed or damaged by any of the perils in respect of which the
          Landlord shall pursuant to the terms hereof have covenanted to effect
          insurance to give notice thereof to the landlord as soon as such
          destruction or damage shall come to notice of the Tenant.

     (c)  In the event of the demised premises or any part thereof being
          destroyed or damaged by any of the risks in respect of which the
          Landlord pursuant to the terms hereof shall have effected insurance at
          anytime during the term hereby created and the insurance money under
          any insurance against the same effected thereon by the Landlord being
          wholly or partly irrecoverable by reason solely or in part of any act
          or default of the Tenant then and in every such case the Tenant will
          forthwith (in addition to the said rent) pay to the Landlord the whole
          or (as the case may require) a fair proportion of the cost of
          completely rebuilding and reinstating the same and any other premises
          in respect of which the Landlords insurance shall be vitiated by the
          act or default of the Tenant.

FACTORIES ACT
-------------
<PAGE>

(18) So long as and as often as the demised premises or any part thereof shall
     be used for the purpose of a factory (as defined by Section 3 of the
     Factories Act 1955) to comply with all requirements of the Factories Act
     1955 and of any Act or Acts amending the same and of any rules or
     regulations made or to be made thereunder and to indemnify the Landlord
     against all liability in respect of any contraventions of any such
     requirements. provided that the Tenant shall not be liable in respect of
     any non-compliance with the said Act arising out of the condition of the
     demised premises on or up to the date hereof.

NO NUISANCE
-----------

(19) Not to do or suffer to be done upon the demised premises any act or thing
     which shall be or become a nuisance damage danger annoyance or
     inconvenience to the Landlord or any of the Landlord's Tenants or any of
     the occupiers of any of the adjoining or neighbouring premises or the
     neighbourhood and to pay all costs charges and expenses incurred by the
     Landlord in abating any nuisance on the demised premises PROVIDED HOWEVER
     that this covenant shall not apply to the temporary first floor over, the
     IQC Room situated in the demised premises and the two storey engineering
     office above the software duplication area.

NO AUCTIONS
-----------

(20) Not without the consent in writing of the Landlord to hold or suffer to be
     held upon the demised premises any sale by auction.

NO DANGEROUS SUBSTANCES
-----------------------
<PAGE>

(21) Not without the consent in writing of the Landlord to keep or suffer to be
     kept on the demised premises any material of a dangerous combustible or
     offensive nature or the keeping of which may at law constitute a nuisance
     or require a licence of some local or public or is other authority.

NOT TO BLOCK UP
---------------

(22) (a)  Not to stop up or obstruct or permit or suffer to be stopped up or
          obstructed or to suffer oil grease or other deleterious matters or
          substances to enter the drains sewers gutters pipes channels and
          watercourses of the demised premises and in the event of the same
          becoming stopped up or obstructed to pay to the Landlord on demand
          such amount as its Surveyor may determine in respect of any costs
          incurred by the landlord in the clearing of the same.

     (b)  Not to discharge or allow to be discharged any noxious gases or
          vapours from the demised premises or any solid matter from the demised
          premises into the drains or sewers as aforesaid nor to discharge or
          allow to be discharged therein any fluid of a poisonous or noxious
          nature.

     (c)  Not to discharge or permit to be discharged any effluent into the
          surface water drainage system.

NOT TO ASSIGN
-------------

(23) (a)  Not to assign underlet or part with or share the possession control or
          occupation
<PAGE>

          of part only of the demised premises provided however that this
          prohibition shall not apply to the sub-lease of part of the demised
          premises to Logitech Ireland Limited and to Logitech Ireland Services
          Limited.

     (b)  Not to assign underlet or part with or share the possession control or
          occupation of the whole of the demised premises without the consent in
          writing of the Landlord first obtained which consent shall not be
          unreasonably withheld in the case of a respectable and responsible
          assignee or underlessee of good financial standing proof of which is
          to be furnished to the Landlord and who is an assignee involved in
          manufacturing of a scale and nature satisfactory to the IDA PROVIDED
                                                                      --------
          ALWAYS that the demised premises shall not be underlet otherwise than
          ------
          upon the covenants and conditions herein contained including provision
          for Rent Review at the same times and in the matter herein provided
          and before granting such consent the Landlord shall be entitled to be
          furnished by the Tenant with particulars of the proposed assignment or
          underletting and the Tenant shall pay the Landlord's reasonable legal
          costs and other expenses for every such consent and upon any
          assignment to obtain if the Landlord shall so require an acceptable
          guarantor or guarantors for any assignee and a direct covenant by the
          assignee with the Landlord to observe and perform the covenants and
          conditions of this Lease and on the grant of any underlease out of
          this Lease to obtain (i) an unqualified covenant on the part of the
          underlessee that the underlessee will not assign underlet or part
<PAGE>

          with the possession of part only of the demised premises and (ii) a
          covenant on the part of the underlessee that the underlessee will not
          assign underlet or part with or share possession of the whole of the
          demised premises without obtaining the previous written consent of the
          landlord under this present Lease (such consent not to be unreasonably
          withheld as aforesaid) and to provide in such underlease that any sub-
          underleases granted out of such underlease whether immediate or
          mediate shall contain similar covenants.

     (c)  Within one calendar month after the execution of any assignment
          transfer underlease or the devolution of the demised premises to give
          notice in writing with particulars to the Landlord's Solicitors,
          Matheson Ormsby Prentice Solicitors or such other solicitors as may be
          notified, and to produce to them with such notice such assignment or
          transfer or the counterpart of such underlease or the probate or
          letters of administration or other instrument under which such
          devolution arises and leave the same with them for the period of
          fourteen days for registration and pay to them a reasonable fee for
          the registration of each such deed or document.

TO PAY STAMP DUTY
-----------------

(24) To pay the Stamp Duty upon this Lease and Counterpart thereof.

TO PAY VALUE ADDED TAX
----------------------

(25) To pay to the Landlord on demand any Valued Added Tax (if any) (or any tax
     of a similar nature that may be substituted for it or levied in addition to
     it) arising on the creation of this Lease or chargeable in respect of any
     payment made by the Tenant under any of the
<PAGE>

     provisions of or in connection with this Lease.

GENERAL INDEMNITY
-----------------

(26) To take out and maintain at all times during the term hereby granted a
     Policy of Insurance covering Public liability in respect of and covering
     the liability of the Landlord and its Agents and the Tenant in respect of
     the demised premises in an amount of not less than IRE (Pounds)1,000,000.00
     (One Million Pounds) to be adjusted from time to time as the Landlord deems
     necessary and to produce said Certificate of Insurance and the receipt for
     payment of the last premium thereon to the Landlord on demand and to
     indemnify and keep indemnified the Landlord against all and any actions
     expenses costs claims damages and other liabilities whatsoever in respect
     of the injury or death of any person or damage to any property arising out
     of the negligence or default of the Tenant and in particular without
     prejudice to the generality of the foregoing arising directly or indirectly
     out of:-

     (a)  The state of repair or condition of the demised premises.

     (b)  The making or execution of any alternation to the demised premises or
          the state of repair or condition of such alternation.

     (c)  The user of the demised premises.

     (d)  Any work carried out or in the course of being carried out to the
          demised premises.

     (e)  Anything now or hereinafter attached to or projecting from the demised
          premises.

     (f)  Any other cause whatever arising out of the negligence or default of
          the Tenant.

FIRE PRECAUTIONS
----------------
<PAGE>

(27) A.   At all times during the said term to comply with all recommendations
          or requirements of the appropriate authority and the insurers of the
          Landlord whether notified or directed to the Landlord or the Tenant
          (who shall notify expeditiously the other) in relation to fire
          precautions and to indemnify the Landlord against any costs or
          expenses in complying with any such requirements or recommendations
          and not to obstruct the access to or means of working any apparatus
          and appliances for the time being installed in the demised premises.

     B.   Clause (27)A shall not apply to any statutory notice requiring the
          temporary first floor over the IQC Room situated in the demised
          premises and the two storey engineering office above the software
          duplication area of the demised premises to comply with such notice.
          In the event of such notice being served on the Tenant the Tenant
          shall immediately forward the notice to the Landlord who shall within
          a reasonable time period carry out any necessary works.

TO YIELD UP
-----------

(28) To yield up unto the Landlord at the expiration or sooner determination of
     the said term together with all the keys thereof so painted repaired
     cleansed maintained amended and kept as aforesaid the demised premises and
     all new buildings erected thereon and all additions and improvements made
     thereto in the meantime and all fixtures of every kind in or upon the
     demised premises or which during the same term may be affixed or fastened
     to or upon the same except Tenant's or trade fixtures.
<PAGE>

(29) A.   Not to discharge omit spill or otherwise cause to pass into the
          Environment any pollutant or hazardous substance. In this clause,
          Environment means the Environment generally including all of its
          physical and ecological aspects including, without limitation, air
          (including without limitation that within buildings or natural or
          manmade structures above or below ground); water (including without
          limitation the open sea, coastal or inland waters and ground waters,
          drains and sewers); land (including without limitation the sea bed or
          river bed under any water as described above, surface land and sub-
          surface land).

     B.   To obtain any Environmental Licence necessary for the conduct of its
          operations within the demised premises. In this clause, Environmental
          Licence means any governmental, statutory, local authority or other
          licence, approval, consent, permit or authorization of whatever kind,
          relating to environmental law.

     C.   To comply with any notice from any local authority or other official
          agency requiring compliance under any environmental law regarding any
          damage caused by it to the Environment or any breach of environmental
          law or of any Environmental Licence and to forward a copy of any such
          notice to the Landlord. The Tenant shall pay any increased insurance
          premium that may be payable by the Landlord where such increase arises
          as a result of the issue of such notice.

     D.   The Tenant shall indemnify the Landlord against all and any actions,
          expenses, costs, claims, damages and other liabilities whatsoever in
          respect of the injury or
<PAGE>

          death of any person or damage to any property howsoever arising out of
          the breach of this clause.

     E.   Provided that the Tenant shall not have to comply with any such notice
          or pay any such increased premium in the event of the Tenant taking
          legal proceedings to challenge the validity of such notice. Should
          such legal proceedings be unsuccessful the Tenant shall comply with
          the aforesaid notice. The Tenant shall indemnify the Landlord against
          any costs which the Landlord may incur arising out of the institution
          of any such proceedings.

     F.   Provided that the Tenant shall not be liable in respect of injury or
          death of any person or damage to any property arising out of the wave
          soldering process carried out by the Landlord at the demised
          properties which process involves the use of flux and thinners, to
          clean oxides from printed circuit boards and the generation of waste
          which is stored in 40 gallon drums.

E.   TENANT'S OPTION TO DETERMINE
     ----------------------------

     1    If the Tenant shall have given to the Landlord not less than nine
          months prior notice in writing of its intention to terminate this
          Lease the Tenant may at any time after the expiration of the fifth
          year of the term hereby granted terminate this Lease PROVIDED THAT:-

          (a)  The Tenant shall have surrendered and delivered up possession to
               the
<PAGE>

               Landlord of the entire of the demised premises together with all
               the Lessor's fixtures and fittings therein on or before the
               expiration of the said notice.

          (b)  The Tenant shall without delay upon being requested by the Lessor
               in that behalf execute and deliver to the Lessor all such
               documentation as may reasonably be required by the Landlord with
               a view to implementing and perfecting the documentation to be
               effected, and

          (c)  The acceptance by the Landlord of any such surrender shall be
               without prejudice to any claim by it against the Lessee or by the
               Tenant against it in respect of any antecedent breach of covenant
               condition or stipulation herein contained.

     (2)  If the Tenant shall give notice of its desire to determine as
          aforesaid then the Landlord shall be permitted during the 9 months
          preceding the expiration of such notice to affix and retain without
          interference upon any part of the property suitable for the purpose a
          notice for the disposal by way of sale, letting or otherwise of the
          property and persons with written authority form and accompanied by
          the Landlord or its Agents shall be permitted on giving forty eight
          hours notice to the Tenant, at all reasonable times to view the
          property, escorted by a nominee of the Tenant if practical:
<PAGE>

     (3)  In all respects time shall be deemed of the essence of this clause.

F.   THE LANDLORD HEREBY COVENANTS with the Tenant:-
     -----------------------------

TO INSURE
---------

1.   A.   Subject to the Landlord being able to effect insurance against any one
          or more of the Insured Risks and subject to reimbursement of the
          appropriate insurance premium as herein provided to insure and keep
          insured (unless such Insurance shall be vitiated by the act or default
          of the Tenant) against loss or damage by or from the Insured Risks
          under a Policy or Policies of Insurance effected with an Insurance
          Office or Offices of repute in the name of the Landlord the demised
          premises and every part of same in the full replacement and
          reinstatement value thereof such value to be determined (in accordance
          with the meaning herein assigned to the expression "Insured Risks")
          from time to time by the Surveyor for the Landlord and to produce to
          the Tenant copy of the policy and a copy of the receipt for payment of
          the last premium thereunder.

          PROVIDED ALWAYS that if the Tenant is of the opinion that the full
          ---------------
          replacement and re-instatement value as determined by the landlord's
          Surveyor is too low the Tenant shall be entitled to serve notice on
          the Landlord that it requires the full replacement and re-instatement
          value to be increased and the Landlord shall on receipt of such notice
          and subject to the Landlord being able to effect insurance in the said
          amount and subject to reimbursement of the appropriate insurance
<PAGE>

          premium as herein provided increase the insurance to the said full
          replacement and re-instatement value as notified by the Tenant.

     B.   In the event that the Landlord changes the Policy of Insurance
          referred to above details shall be forwarded to the Tenant.

TO REINSTATE
------------

2.   In case the demised premises or any part thereof shall be destroyed or
     damaged by fire or from any of the Insured Risks then unless the relevant
     policy shall have been vitiated or rendered less than fully effective by
     any act, neglect, default or omission on the part of the Tenant (subject to
     the Landlord obtaining Planning Permission and Building Bye Law Approval
     and all other necessary pertinent licences and approvals) to reinstate the
     demised premises substantially in accordance with its existing plan and
     elevation and as often as shall happen to lay out all monies received in
     respect of such insurance as aforesaid as soon as practicable in or upon
     rebuilding, repairing or reinstating the demised premises in a good and
     substantial manner and the Landlord shall be required to make up any
     deficiency out of its own monies and the Landlord shall not call upon the
     Tenant to make up any such deficiency out of the Tenant's own monies
     PROVIDED ALWAYS that in the event of the Landlord being unable to reinstate
     the demised premises substantially in accordance with its existing plan and
     elevation due to refusal of planning or other approvals consents or
     licences the Tenant agrees to surrender this Lease without fine or other
     compensation when called upon by the Landlord to do so whereupon the said
     Insurance monies shall belong absolutely to the Landlord PROVIDED FURTHER
     that for the purposes of this Lease the Tenant hereby absolutely waives and
     abandons its rights
<PAGE>

     (if any) to surrender this Lease under the provisions of Section 40 of the
     Landlord and Tenant Law Amendment Ireland 1860 Act or otherwise.

SUSPENSION OF RENT
------------------

3.   A.   If the demised premises or any part thereof shall at any time be
          destroyed or so damaged by fire or any other of the Insured Risks as
          to be unfit for occupation or use and the relative Policy or Policies
          of Insurance effected by the Landlord shall not have been vitiated or
          payment of the Policy monies refused in whole or in part in
          consequence of any act neglect or default on the part of the Tenant or
          any party claiming through or under it then and in such case the Rent
          hereby reserved or a fair and just proportion thereof according to the
          nature and extent of the damage sustained shall be suspended and cease
          to be payable until the demised premises shall again have been
          rendered fit for occupation and use or for a period of three years
          from the date of such destruction or damage whichever shall be the
          shorter and in the determination of such proportion or period of the
          Certificate of the Surveyor to be appointed on the application of
          either party by the Chairman of the Chartered Surveyors in Ireland be
          final conclusive and binding upon and between the parties hereto.

     B.   PROVIDED HOWEVER that the Tenant shall be permitted to surrender the
          ----------------
          Lease if the demised premises shall not have been rendered fit for
          occupation and use within a period of 3 years from the date of such
          destruction or damage and upon the Tenant giving to the Landlord
          written notice of its intention so to surrender,
<PAGE>

          this Lease shall be at an end and of no further force or effect but
          without prejudice to the rights of either party arising in respect of
          any antecedent breach of covenant or condition on the part of the
          other.

4.   THAT the Tenant paying the rent hereby reserved and performing and
     observing the several covenants conditions and agreements herein contained
     and on the Tenant's part to be paid performed and observed shall and may
     peaceably and quietly hold and enjoy the demised premises during the term
     hereby granted without any lawful interruption or disturbance from or by
     the Landlord or any person claiming under or in trust for the Landlord.

5.   The Landlord hereby agrees to indemnify the Tenant against all and any
     actions, expenses, costs, claims, damages and other liabilities whatsoever
     in respect of the injury or death of any person or damage to any property
     arising out of the construction of the temporary first floor over the IQC
     Room situated in the demised premises and the two storey engineering office
     above the software duplication area of the demised premises and arising out
     of the fact that such areas do not comply with the necessary regulations
     PROVIDED HOWEVER that this indemnity shall immediately terminate upon the
     production by the Tenant of a Fire Safety Certificate under the Building
     Regulations confirming rectification of the aforesaid.

G. FORFEITURE
   ----------

     PROVIDED ALWAYS and it is hereby agreed that if the rent hereby reserved or
     ---------------
     any part thereof shall at any time be in arrear and unpaid for twenty one
     days after it becomes due
<PAGE>

     (whether legally demanded or not) or if the Tenant shall go into
     liquidation (not being a voluntary liquidation for the purpose only of
     reconstruction) or if the Tenant being an individual shall become bankrupt
     or make any arrangement or composition with his or her Creditors or if the
     Tenant being a partnership limited or otherwise, upon dissolution of that
     partnership or if any covenant condition or agreement on the part of the
     Tenant herein contained shall be not performed or observed then and in any
     such case it shall be lawful for the Landlord or any person or persons duly
     authorised in that behalf into or upon the demised premises or any part
     thereof in the name of the whole to re-enter and the demised premises to
     hold and enjoy thenceforth as if these presents had not been made but
     without prejudice to any rights of action or remedy of the Landlord in
     respect of any antecedent breach by the Tenant of any of the stipulations
     herein contained and on the happening of any of the said events it shall
     also be lawful for the Landlord to determine this demise by giving to the
     Tenant on leaving for it at the demised premises or sending by registered
     post to its place of business last known a Notice to Quit and deliver up
     possession of the demised premises within fourteen days of the service of
     the said Notice to Quit the said Notice expiring on any day not necessarily
     a gale day and any day of the week and upon the expiration of such Notice
     the tenancy hereby created shall be deemed to have been duly determined by
     such Notice to Quit and the Landlord shall thereupon be entitled to
     possession of the demised premises as of its former estate and as if the
     tenancy hereby created had never existed.

          In the event that any of the aforesaid events should occur, the Tenant
          shall be obliged to continue to pay all rents, rates and other charges
          payable under the terms
<PAGE>

          of this Lease for the residue of the term herein. Under landlord's
          general legal obligations, the landlord will be obligated to
          mitigate its damages and thereby offset Tenant's continuing
          obligation to pay rents, rates and other charges set forth herein.
          However, Tenant and Landlord agree that, during the four-year period
          following commencement of this Lease, Landlord's obligation to
          mitigate damages shall be satisfied if it uses its best efforts and
          best endeavors to procure a new tenant involved in manufacturing of a
          scale and nature satisfactory to the IDA.

H    (1)  In the event of a dispute between the parties hereto arising out of
          the terms of this Lease the matter shall be referred to an Arbitrator
          to be nominated as provided for in the Fourth Schedule herein.

     (2)  All such Arbitrations as aforesaid shall be conducted in accordance
          with the provisions set forth in the Arbitration Acts 1954 and 1980 or
          in any Act or Statutory Rule or Order extending amending modifying or
          replacing the same and for the time being in force.

(I)  It is hereby acknowledged by the Landlord that the IDA have covenanted in
     the IDA Lease with the Landlord to construct and maintain in good order
     repair and condition the roads and footpaths coloured yellow on Plan I
     annexed hereto and to maintain the sewers, drains and watermains (outside
     the perimeter of the demised premises) which serve the demised premises
     unless and until the same have been taken in charge by the Local Authority
     and

                                      -33-
<PAGE>

     in the event that the IDA fails to comply with the said covenant the
     Landlord shall use its best endeavours to ensure compliance provided that
     if proceedings are instituted to enforce compliance, the cost of such
     proceedings would be shared between the Landlord and the Tenant in
     proportion to the respective values of their interests in the demised
     premises.

AND IT IS HEREBY CERTIFIED that the transaction hereby effected does not form
--------------------------
part of a larger transaction or of a series of transactions in respect of which
the amount or value or the aggregate amount or value of the consideration (other
than rent) exceeds (Pounds)5,000.

AND IT IS HEREBY FURTHER CERTIFIED that the property hereby demised is property
----------------------------------
situate in the County Borough of Cork

AND IT IS HEREBY AGREED by the Landlord and the Tenant that the provisions of
-----------------------
this Lease shall be construed in accordance with the laws of Ireland.

AND the Landlord hereby assents to the registration of this Lease as a burden on
---
the lands comprised in folio 45419F of the Register County Cork

IN WITNESS whereof the parties hereto have hereunto caused their respective
----------
Common Seals to be affixed hereto the day and year first herein written.

                                FIRST SCHEDULE
                                --------------

                                      -34-
<PAGE>

ALL THAT the premises and lands situate at Cork Business and Technology Park,
Model Farm Road in the County of Cork as shown edged with a red verge line on
Plan 1 annexed hereto being part of the lands comprised in folio 45419F of the
Register County of Cork with the factory premises thereon as shown on Plan 2
annexed hereto.

                                SECOND SCHEDULE
                                ---------------

                         (Exceptions and Reservations)

Excepting and reserving unto the Landlord:-

1    All mines and minerals in or upon the demised premises with full powers of
     working and taking the same.

2    The full free and uninterrupted passage and running of water and soil gas
     electricity telephone and other services or supply through the sewers
     drains mains pipes wires cables watercourses conduits and subways which are
     now or may be laid down in upon or under the demised premises to and from
     any adjoining or adjacent land and premises with power for the Landlord:

     (a)  to enter upon the demised premises and to construct and lay therein
          and thereunder sewers drains mains pipes wires cables watercourses
          conduits and subways and to

                                      -35-
<PAGE>

          connect the same doing as little damage as is reasonably possible to
          the demised premises.

     (b)  to enter upon the demised premises for the purpose of cleaning
          repairing altering replacing and renewing the said sewers drains mains
          pipes wires cables watercourses conduits and subways.

3    All rights of light or air now subsisting or which might (but for this
     exception or reservation) be acquired over any such adjoining or adjacent
     land to the intent that the Landlord may construct or reconstruct any
     buildings or installations on such adjoining or adjacent land in such
     manner as the Landlord may consider fit notwithstanding any interference
     thereby occasioned to the access of light or air to the demised premises.

4    The full and free right to support for the time being enjoyed by buildings
     and premises adjoining or adjacent to the demised premises.

5    The full and free right and liberty to enter upon the demised premises at
     all reasonable times in order to build thereon or on or into any dividing
     boundary or party walls or fences on the demised premises subject to all
     damage thereby occasioned being made good with all convenient speed by the
     person or persons exercising such right.

                                      -36-
<PAGE>

6    A right in common with Landlord its Tenants licensees servants and agents
     to park motor vehicles on the area set aside for car parking.

7    All other easements or rights in the nature of easements or quasi-easements
     now or hereafter enjoyed by property adjoining or adjacent to the demised
     premises.

                                THIRD SCHEDULE
                                --------------

The following easements rights and privileges are for the benefit of the Tenant
its successors and assigns the owners and occupiers for the time being of the
lands hereby demised or any part thereof its and their respective under-Tenants
and servants agents licensees and invitees in common with all other persons
having the like right that is to say:-

A    A right of way in common with the Landlord its Tenants licensees servants
     and agents and with all other persons entitled thereto at all times and for
     all purposes to pass and repass with or without vehicles over and along the
     lands coloured yellow on Plan 1 hereto annexed.

PROVIDED ALWAYS that in exercise the foregoing rights the Tenant shall at no
time cause or permit to be caused any obstruction to the exercise of such rights
by other persons entitled the

                                      -37-
<PAGE>

place or permit to be placed on the said lands coloured yellow on Plan 1 annexed
hereto and area set aside for car parking anything whatsoever save as
hereinbefore provided.

                                FOURTH SCHEDULE
                                ---------------

                        PROVISIONS AS TO RENT REVISIONS
                        -------------------------------

1    The revised rent referred to in the within Lease in respect of any of the
     periods therein mentioned may be agreed at any time between the Landlord
     and the Tenant or (in the absence of agreement) be determined not earlier
     than the date of commencement of such period ("the Review Date") by an
     Arbitrator such Arbitrator to be nominated (in the absence of agreement
     between the parties) upon the application (made not more than three
     calendar months before or at any time after the Review Date) of either the
     landlord or the Tenant by the Chairman (or other officer endowed with the
     functions of such Chairman) of

     (i)  The Society of Chartered Surveyors in the Republic of Ireland or,

     (ii) such Body of Professional Surveyors or Valuers as (in the event of
          such Society not then being in existence) shall for the time being
          have undertaken in the Republic of Ireland the functions (in the
          activity of property valuation) currently performed by such Society or
          (should the Chairman or other officer as aforesaid be unwilling or
          unable to make the nomination) by the next senior officer of such
          Society or

                                      -38-
<PAGE>

          Body who is willing and able to make the nomination or (in the event
          of there being no such officer willing and able to make the nomination
          or should such Body not be in existence or not be readily
          identifiable) by the President (or other officer endowed [missing page
          32]

     (b)  The fact that the entire of the demised premises may have been
          underlet at a rent less than the rent payable hereunder.

     (c)  The goodwill which shall have attached to the demised premises by
          reason of the business carried on thereat.

     (d)  Any works executed by and at the expense of the Tenant or any
          predecessor in title of the Tenant (or any party lawfully occupying
          the demised premises or any part thereof under the Tenant or any such
          predecessor) in or to or in respect of the demised premises otherwise
          than in pursuance of an obligation on foot of the within Lease or any
          agreement therefor.

2    All such arbitrations as aforesaid shall be conducted in accordance with
     the provisions set forth in the Arbitration Acts 1954 and 1980 or in any
     Act or Statutory Rule or Order extending amending modifying or replacing
     the same and for the time being in force.

                                      -39-
<PAGE>

3    If the revised rent in respect of any period ("the Current Period") shall
     not have been ascertained on or before the Review Date referable thereto
     rent shall continue to be payable up to the gale day next succeeding the
     ascertainment of the revised rent at the rate payable during the preceding
     period AND on such gale day the Tenant shall pay to the Landlord the
            ---
     appropriate instalment of the revised rent together with any shortfall
     between (i) rent actually paid for any part of the Current Period and (ii)
     rent at the rate of the revised rent attributable to the interval between
     that Review Date and such gale day (other than the said appropriate
     instalment if payable in arrear) and together further with interest on said
     shortfall such interest to be compounded on a day to day basis and to be
     assessed at such a rate as shall be equivalent to the yield (at issue and
     before deduction of tax if any) on the security of the Government last
     issued before the commencement of the Current Period (allowance having been
     made in the calculation of the said yield for any profit or loss which may
     occur on the redemption of the security). For the purpose of this paragraph
     the revised rent shall be deemed to have been ascertained on the date when
     the same shall have been agreed between the parties or as the case may be
     on the date of the notification to the Tenant of the award of the
     Arbitrator.

4    If there should be in force at the commencement or during the currency of
     any particular relevant period any Statute or Order (directly or
     indirectly) prohibiting or restricting an increase of rent in respect of
     the demised premises the provisions of this Schedule and of the Within
     Lease may nevertheless be invoked or reinvoked to determine the rent which
     would but for the said prohibition or restriction be payable during such
     relevant period but

                                      -40-
<PAGE>

     (if appropriate) the further implementation thereof shall be suspended in
     effect for such period as may be required by Law.

5    When and so often as the revised rent shall have been ascertained pursuant
     to the provisions herein set forth memoranda thereof shall thereupon be
     signed by or on behalf of the Landlord and the Tenant and shall be annexed
     to the within Lease and its Counterpart and the parties shall bear their
     own costs in relation to the preparation and completion of such memoranda.

                                      -41-<PAGE>

EXHIBIT 10.7

                              SUBLEASE AGREEMENT

     THIS SUBLEASE AGREEMENT (this "Sublease") is made and entered into between
RADIAN INTERNATIONAL LLC, a Delaware limited liability company ("Sublessor"),
and THE SMT CENTRE OF TEXAS INC., a Texas corporation ("Sublessee").

                              W I T N E S S E T H
                              - - - - - - - - - -

     WHEREAS, Sublessor currently leases from HB Austin Limited Partnership, a
Kansas limited partnership ("Prime Lessor"), certain real property (the
"Property") more particularly described as Lot 1, BRATTON-GRAND SUBDIVISION, a
subdivision in Travis County, Texas, according to the map or plot of record in
Volume 88, Pages 174-175, Plat Records of Travis County, Texas (locally known as
15508 Bratton Lane, Austin, Texas 78728), pursuant to that certain Lease between
Radian Corporation, a Texas corporation, as tenant, and Prime Lessor, as
landlord, dated June 3, 1991 (said Lease, as amended from time to time, is
referred to herein as the "Prime Lease"); and

     WHEREAS, the tenant's interest in the Prime Lease has been assigned by
Radian Corporation to Sublessor by Assignment of Lease dated as of January 1,
1996; and

     WHEREAS, the Property is improved with a building (the "Building") and
related site improvements, and Sublessor desires to lease to Sublessee 41,708.12
square feet of area within the Building (the "Premises"), as shown on the
floorplan of the Building attached hereto as Exhibit A and incorporated herein
                                             ---------
for all purposes, on the terms and conditions set forth below; and

     WHEREAS, this Sublease is being executed pursuant to section 4.1 of an
asset purchase agreement dated March 29, 1996 (the "Agreement") between, among
others, Sublessee, as purchaser, and Sublessor, Radian Corporation, and Radian
Systems Corporation, a Texas corporation, as sellers, pursuant to which
Sublessee has acquired the assets of said sellers' electronic assembly Business;

     NOW THEREFORE, for and in consideration of the premises and agreements set
forth below, Sublessor and Sublessee agree as follows:

                                   ARTICLE I
                                  PRIME LEASE

     1.01  Sublease Subject to Prime Lease.  This Sublease is subject and
           -------------------------------
subordinate to the Prime Lease, a copy of which is attached hereto as Exhibit B.
                                                                      ---------
Upon the termination of the Prime Lease, this Sublease shall terminate.
Capitalized terms used in this Sublease and not otherwise defined herein or in
the Agreement shall have the same meanings as set forth in the Prime Lease.

                                      -2-
<PAGE>

     1.02  Compliance with Prime Lease.  Except with respect to Sublessor's
           ---------------------------
obligations to pay to Prime Lessor the rent due thereunder, Sublessee hereby
covenants and agrees to comply with and perform all obligations of Sublessor to
Prime Lessor under the Prime Lease with respect to the Premises and Sublessee's
obligations under this Sublease, including, without limitation, all repair
obligations, all insurance obligations, and all indemnification obligations of
Sublessor thereunder. Sublessee agrees that whenever the consent of Prime Lessor
is required under the terms of the Prime Lease with respect to any action,
Sublessee shall obtain the consent of both Sublessor and Prime Lessor before
taking such action, and whenever the Prime Lease requires Sublessor to indemnify
Prime Lessor for any matter, to the extent the matter is applicable to the
Premises and Sublessee's obligations under this Sublease, Sublessee's activities
upon the Property or any obligations of Sublessee under this Sublease, Sublessee
shall indemnify both Prime Lessor and Sublessor with respect to such matter.
Sublessor agrees that except with respect to Section 6.01 below, where
Sublessor's consent is required under this Sublease, such consent will not be
unreasonably withheld. Sublessee agrees to deliver promptly to Sublessor copies
of any and all notices or other correspondence received by Sublessee from Prime
Lessor and further agrees, notwithstanding Section 9.04 of this Sublease to the
contrary, to so deliver same in the manner most appropriate to insure that
Sublessor will be able to respond to any of such notices or other correspondence
from the Prime Lessor within any time period set forth in the Prime Lease or
such notice.

                                  ARTICLE II
                              DEMISE OF PREMISES

     2.01  Demise of Premises.  Subject to and upon the terms and conditions set
           ------------------
forth herein and the provisions of the Agreement, Sublessor hereby subleases to
Sublessee, and Sublessee hereby subleases from Sublessor, for the Sublease Term
herein set forth, the Premises, including a license to Sublessee to use the
parking areas, driveways and sidewalks located upon the Property, and a license
to use those hallways, restrooms, conference rooms break rooms and loading docks
within the Building which are shown by cross-hatch on Exhibit A attached hereto
                                                      ---------
(collectively, the "Shared Areas"), in the same manner and to the same extent as
Sublessor uses such Shared Areas, but subject to such reasonable rules and
regulations regarding the Shared Areas as Sublessor may promulgate from time to
time, which rules and regulations do not restrict or interfere with Sublessee in
operating the Business in the same manner as Sublessor operated the Business
before Closing.

     2.02  Condition of the Premises.  Sublessee acknowledges and agrees that it
           -------------------------
has inspected the Premises and accepts same in their current condition.  "AS IS"
and "WITH ALL FAULTS". Sublessor has no obligation to construct any tenant
improvement in the Premises or make any repairs or modifications thereto. To the
extent Prime Lessor requires the removal of any improvements placed within the
Premises on behalf of Sublessee, Sublessee shall remove all such improvements at
Sublessee's sole expense and shall return the Premises to its condition prior to
the installation of such improvements, reasonable wear and tear excepted.
Sublessee may not

                                      -3-
<PAGE>

alter the Premises unless Sublessee first submits to Sublessor (and if required
under the Prime Lease, to Prime Lessor), plans and specifications for the
proposed alteration, and Sublessor (and Prime Lessor) approve such plans and
specifications.

     2.03  Disclaimer of Warranties.  EXCEPT AS EXPRESSLY STATED IN THE
           ------------------------
AGREEMENT, SUBLESSEE ACKNOWLEDGES THAT SUBLESSOR HAS NOT MADE AND WILL NOT MAKE
ANY WARRANTIES, EITHER EXPRESS OR IMPLIED, TO SUBLESSEE WITH RESPECT TO THE
QUALITY OF TENANT FINISH WITHIN THE PREMISES OR AS TO THE CONDITION OF THE
PREMISES, AND THAT SUBLESSOR EXPRESSLY DISCLAIMS ANY IMPLIED WARRANTY THAT THE
PREMISES ARE OR WILL BE SUITABLE FOR SUBLESSEE'S INTENDED PURPOSES. SUBLESSEE'S
OBLIGATION TO PAY RENTALS UNDER THIS SUBLEASE IS NOT DEPENDANT UPON THE
CONDITION OF THE PREMISES OR THE BUILDING (NOW OR IN THE FUTURE) OR THE
PERFORMANCE BY PRIME LESSOR OF ITS OBLIGATIONS UNDER THE PRIME LEASE OR BY
SUBLESSOR OF ANY OBLIGATIONS UNDER THIS SUBLEASE (OTHER THAN SUBLESSOR'S
OBLIGATION TO NOT DISTURB SUBLESSEE'S QUIET ENJOYMENT OF THE PREMISES) OR BY
PRIME LESSOR OF ITS DUTIES OR OBLIGATIONS UNDER THE PRIME LEASE, WHETHER EXPRESS
OR IMPLIED.

     2.04  Services.  Subject to the following limitations, Sublessor shall
           --------
furnish Sublessee while Sublessee is occupying the Premises and is not in
default (beyond any period permitted for cure) under this Sublease, facilities
to provide (i) water (hot and cold) at those points of supply provided for
general use of tenants in the Building and at existing locations within the
Premises; (ii) heated and refrigerated air conditioning in season; and at such
temperatures and in such amounts as are appropriate and commercially reasonable
in the conduct of the Business; (iii) janitorial service to the Premises as is
commercially reasonable on weekdays other than holidays recognized by Sublessor,
(iv) receptionist service as is commercially reasonable from 9:00 a.m. to 5:00
p.m. on weekdays other than holidays recognized by Sublessor, (v) de-ionized
water in such amounts and at such times as Sublessor and Sublessee may agree and
(vi) compressed air in such amounts and at such times as Sublessor and Sublessee
may agree. Also, Sublessor shall maintain the Shared Areas in reasonably good
order and condition; provided, however, that Sublessee shall reimburse Sublessor
for the cost of repairing any damage to such areas occasioned by Sublessee, or
its employees, agents or invitees, to the extent required under the Prime Lease.
Sublessee shall reimburse Sublessor for the cost of these services as more
particularly described below. Sublessor's failure to any extent to make
available, or any slowdown, stoppage or interruption of, the services set forth
in this Section 2.4 resulting from any cause (including, but not limited to,
Sublessor's compliance with (i) governmental or business guidelines now or
hereafter published or (ii) any requirements now or hereafter established by any
governmental agency, board or bureau with jurisdiction over the operation and
maintenance of the Building) shall not render Sublessor liable in any respect
for damages to person, property or business, nor be construed an eviction of
Sublessee or work an abatement of Rent, nor relieve Sublessee from fulfilling
any covenant or agreement hereof; however, Sublessor shall use reasonable
efforts to resume said services in a timely manner. Should any equipment or
machinery furnished by Sublessor break down or cease

                                      -4-
<PAGE>

to function properly, Sublessor shall use reasonable diligence to repair same
promptly, but Sublessee shall have no claim for abatement of Rent or damages on
account of an interruption in service occasioned thereby or resulting therefrom.
Notwithstanding the foregoing, if an interruption of a service which is
essential to Sublessee's use and occupancy of the Premises for the use permitted
herein occurs because of the negligence of Sublessor or its agents or employees,
and continues for a period of two (2) consecutive business days, the Rent
otherwise due hereunder will abate commencing the third consecutive day and
continuing until the first day upon which the essential service again is
provided.

                                  ARTICLE III
                    SUBLEASE TERM; SURRENDER OF POSSESSION

     3.01  Sublease Term.  The term of this Sublease ("Sublease Term") shall
           -------------
commence on April 1, 1996 (the "Commencement Date") and shall terminate on May
31, 2001, unless sooner terminated under the terms and provisions hereof.

     3.02  Surrender of the Premises.  At the termination of this Sublease, by
           -------------------------
lapse of time or otherwise, Sublessee shall deliver up the Premises to Sublessor
in as good condition as on the Commencement Date, expecting only ordinary wear
and tear and matters for which Sublessor is responsible thereunder.  Upon such
termination of this Sublease, Sublessor shall have the right to re-enter and
resume possession of the Premises.

     3.03  Holding Over.  If Sublessee holds over the Premises after expiration
           ------------
of this Sublease without prior written consent of Sublessor and Prime Lessor,
Sublessee shall be deemed to be occupying the Premises as a tenant at sufferance
at a daily rental equal to one thirtieth (1/30th) of two hundred percent (200%)
of the Rent (hereinafter defined), and otherwise subject to all the conditions,
provisions and obligations of this Sublease insofar as the same are applicable
to a tenancy at sufferance.  In addition, Sublessee shall indemnify and defend
Sublessor from all loss, cost, claims and damages (including consequential
damages) which Sublessor may suffer by reason of such holdover.  The inclusion
of this Section 3.03 shall not be deemed Sublessor's or Prime Lessor's consent
to any holding over.

                                  ARTICLE IV
                                     RENT

     4.01  Rent.  Sublessee, in consideration for the lease of the Premises,
           ----
agrees to pay Sublessor rental (the "Rent") in the amount of TWELVE AND NO/100
DOLLARS ($12.00) per square foot of the Premises per year.  The Rent shall be
paid in advance in equal monthly installments of Forty-one Thousand Seven
Hundred Eight and 12/100 Dollars ($41,708.12) each, as provided in Section 4.02.

     4.02  Payment of Rentals.  Sublessee shall pay to Sublessor, at Sublessor's
           ------------------
address set forth herein, the Rent without deduction or setoff (except as
provided in the Agreement), for each

                                      -5-
<PAGE>

month of the Sublease Term. One such monthly installment shall be payable by
Sublessee to Sublessor contemporaneously with the execution of this Sublease,
and a like monthly installment of Rent shall be due and payable without demand
beginning on the first day of the first full calendar month of the Sublease Term
and continuing thereafter on or before the first day of each succeeding calendar
month during the Sublease Term. If any installment of Rent, or any portion
thereof, is not received by the due date thereof, then (without in any way
implying Sublessor's consent to such late payment) Sublessee agrees to pay, in
addition to said installment of Rent, a late payment charge equal to the sum of
(a) one percent (1%) of the installment of Rent, or portion thereof, which is
overdue and (b) any sum which Sublessor may be required to pay to Prime Lessor
by reason of late payment under the Prime Lease, it being understood that said
late payment charge shall be for the purpose of reimbursing Sublessor for the
additional costs and expenses which Sublessor presently expects to incur in
connection with the handling and processing of late installment payments of the
Rent which become owing by Sublessee to Sublessor hereunder.

     4.03  Reimbursement for Services, Taxes and Insurance.  The Rent has been
           -----------------------------------------------
calculated based on the current cost to Sublessor of paying the expenses of the
Property and providing to the Premises the services described in Section 2.04
above. Sublessor and Sublessee intend that Sublessee shall (ans Sublessee
expressly agrees to) reimburse Sublessor (a) to the extent the cost of providing
to Sublessee the services described in Section 2.04 above exceeds the cost
previously incurred by Sublessor to provide such services to the Premises and
(b) to the extent Sublessee's share (determined by dividing the number of square
feet in the Premises by the number of square feet in the Building) of the taxes
and insurance payable by Sublessor with respect to the Property exceeds the cost
to Sublessor of the taxes and insurance for 1995. In that regard, Sublessor, at
Sublessor's expense, may install submeters to measure the amount of water,
wastewater, de-ionized water, compressed air and electricity utilized by
Sublessee within the Premises, and to measure the rated heat load of equipment
introduced by Sublessee into the Premises. Furthermore, Sublessor and Sublessee
shall agree upon the costs of all such services which shall be deemed incurred
by Sublessor for providing these services during the period when Sublessor
operated its business from the Premises. Where submeters are used, the excess
cost payable to Sublessee shall be calculated by multiplying the excess amount
by the rate(s) charged to Sublessor by the applicable service providers;
provided, however, that with respect to electricity, an additional cost shall be
charged to reflect the increase in the rated heat load because of the equipment
installed by Sublessee in the Premises, and at such time as Sublessor deems
appropriate, based upon the rated heat load generated by the equipment within
the Premises. Sublessor may require Sublessee to install, at Sublessee's
expense, additional air conditioning units with sufficient capacity to handle
the increased heat load. With respect to janitorial service, the cost payable by
Sublessee shall be determined based upon the janitorial service provider's bid.
Sublessor may estimate such excess cost and bill same to Sublessee on a monthly
basis, with a reconciliation at the end of each calendar year, or may bill
Sublessee for excess costs in arrears as incurred.

                                   ARTICLE V

                                      -6-
<PAGE>

                                QUIET ENJOYMENT

     5.01  Covenant of Quiet Enjoyment.  Provided Sublessee is not in default
           ---------------------------
under this Sublease (beyond any period permitted for Sublessee to cure same),
including without limitation, paying all Rent and other sums due hereunder.
Sublessee shall peaceably and quietly hold and enjoy the Premises against
Sublessor, for the Sublease Term herein described subject to the provisions and
conditions of this Sublease and of the Prime Lease, and subject to the Rights of
any party with an interest in the Premises superior to that of Sublessor (such
as Prime Lessor and any lender with a lien against the Building).  Sublessor's
covenant of quiet enjoyment shall include the obligation to perform all
obligations of the tenant under the Prime Lease to the extent Sublessee is not
required to perform such obligations under the terms of this Sublease.

     5.02  Limitation.  Subject to the provision of the Agreement, it is
           ----------
understood and agreed that the provisions of Section 5.01 and any and all other
covenants of Sublessor contained int his Sublease shall be binding upon
Sublessor and its successors only with respect to breaches occurring during its
and their respective ownership of the Sublessor's interest hereunder.  This
Sublease is subject to and subordinate to all matters of public record in Travis
County, Texas.

     5.03  Use.  Sublessee shall use the Premises only for electronic assembly
           ---
operations and related activities and for no other purposes without Sublessor's
consent.  Sublessee shall not permit any sound, light, odor or other matter to
escape or emanate from the Premises other than in the commercially reasonable
conduct of the Business without Sublessor's prior written consent.

                                  ARTICLE VI
                           ASSIGNMENT AND SUBLETTING

     6.01  Restriction.  Sublessee shall not, without the prior written consent
           -----------
of Sublessor and Prime Lessor, which may be withheld by either in their sole
discretion, assign, transfer, mortgage, pledge, hypothecate or encumber this
Sublease or any interest herein or sublet the Premises or any part thereof, or
permit the use of the Premises by any party other than Sublessee.  Any such
consent by Sublessor to any such assignment or subletting shall not release
Sublessee from any of Sublessee's obligations hereunder or be deemed to be a
consent to any subsequent assignment, subletting, occupation or use by another
person.

                                  ARTICLE VII
                        INDEMNIFICATION AND EXCULPATION

     7.01  Sublessee's Indemnity.  Sublessee shall indemnify and hold harmless
           ---------------------
Sublessor and Sublessor's agents, employees, shareholders, officers and
directors from and against all costs, expenses (including reasonable attorney's
fees and costs), fines, suite, claims, demands, liabilities and actions
resulting from any breach, violation or nonperformance by Sublessee and
Sublessee's employees, agents, contractors, licensees and invitees, of any
covenant or condition hereof or of the Prime Lease or from the use or occupancy
of the Premises or the Shared Areas by Sublessee or Sublessee's employees,
agents, contractors, licensees and invitees or from any act, omission or

                                      -7-
<PAGE>

neglect of Sublessee, Sublessee's agents, servants, employees, customers or
invitees or from any other cause whatsoever (other than Sublessor's negligence).

     7.02  Sublessor's Indemnity.  Sublessor shall indemnify and hold harmless
           ---------------------
Sublessee and Sublessee's agents, employees, shareholders, officers and
directors from and against all costs, expenses (including reasonable attorney's
fees and costs), fines, suites, claims, demands, liabilities and actions
resulting from any breach, violation or nonperformance by Sublessor and
Sublessor's employees, agents, contractors, licensees and invitees, of any
covenant or condition hereof or of the Prime Lease or from any act, omission or
neglect of Sublessor, Sublessor's agents, servants, employees customers or
invitees.  In no event shall Sublessee or Sublessee's agent, servants,
employees, customers or invitees be considered customers or invitees of
Sublessor for purposes of this Section 7.02.

     7.03  Waiver of Subrogation.  Each party hereto waives any cause of action
           ---------------------
it might have against the other party on account of any loss or damage that is
insured against under any insurance policy (to the extent that such loss or
damage is recoverable under such insurance policy) that covers the Building, the
Premises, Sublessor's or Sublessee's fixtures, personal property, leasehold
improvements or business and which names Sublessor or Sublessee, as the case may
be, as a party insured. Notwithstanding the foregoing, the releases in the
preceding sentence shall be applicable and in force and effect only so long as
and to the extent that such release does not invalidate any policy or policies
of insurance now or hereafter maintained by the other party hereto. Each party
hereto agrees that it will request its insurance carrier to endorse all
applicable policies waiving the carrier's rights of recovery under subrogation
or otherwise against the other party.

     7.04  Exculpation.  Sublessor shall not be liable to Sublessee or
           -----------
Sublessee's employees, agents, contractors, licenses or invitees for any injury
to person or damage to property from any cause whatsoever, excepting only the
negligence or willful misconduct of Sublessor or duly authorized employees and
agents of Sublessor.

                                 ARTICLE VIII
                             DEFAULTS AND REMEDIES

     8.01  Default by Sublessee; Remedies by Sublessor.  The provisions of the
           -------------------------------------------
Prime Lease with respect to the tenant's default and the landlord's remedies are
incorporated into this Section by this reference. In case of any breach of this
Sublease by Sublessee, Sublessor shall notify Sublessee of the breach if, and to
the extent, Prime Lessor must notify Sublessor of a breach under the Prime
Lease, and Sublessee shall have any rights to cure which inure to Sublessor
under the Prime Lease. Sublessee shall be personally liable to Sublessor for all
damage incurred or suffered by Sublessor by reason of such breach, and in
addition to all other rights of Sublessor available at law or equity, Sublessor
shall have all rights held by Prime Lessor under the Prime Lease as if such
breach by Sublessee was a breach by the tenant thereunder. Notwithstanding the
foregoing, Sublessor's right to recover consequential damages from Sublessee
shall be limited to

                                      -8-
<PAGE>

the right to recover damages suffered by Sublessor because of a breach by
Sublessee of the Prime Lease, Sublessee expressly agreeing that any such damages
are foreseeable. If Sublessee defaults in the performance of any of the terms
and provisions hereof and Sublessor places the enforcement of this Sublease in
the hand of an attorney, Sublessee agrees to reimburse Sublessor for all
reasonable expenses incurred by Sublessor as a result thereof including, but not
limited to, reasonable attorney's fees.

                                  ARTICLE IX
                                 MISCELLANEOUS

     9.01  Amendment.  No amendment, modification or alteration of the terms
           ---------
hereof shall be binding unless the same shall be in writing, dated subsequent to
the date hereof and duly executed by the parties hereto.

     9.02  Headings; Interpretation.  Descriptive headings are for convenience
           ------------------------
only and shall not control or affect the meaning or construction of any
provision of this Sublease. Whenever the context of this Sublease requires,
words used in the singular shall be construed to include the plural and vice
versa and pronouns of whatsoever gender shall be deemed to include and designate
the masculine, feminine or neuter gender.

     9.03  Counterparts.  For the convenience of the parties, any number of
           ------------
counterparts of this Sublease may be executed by one or more parties hereto and
each such executed counterpart shall be, and shall be deemed to be, an original
instrument.

     9.04  Notices. Subject to Article 1.03 hereof, notices, consents, requests,
           -------
instructions, approvals and other communications provided for herein and all
legal process in regard hereto shall be validly given, made or served, if in
writing and delivered personally or sent by United States certified or
registered mail, postage prepaid, return receipt requested, if to:

     Sublessor:

     Radian International LLC
     P.O. Box 201088
     Austin, Texas 78720-1088
     Attn: Facilities Manager

     Sublessee:

     The SMT Centre of Texas Inc.
     15508 Bratton Lane, Suite ___
     Austin, Texas 78728

     with a copy to:

                                      -9-
<PAGE>

     The SMT Centre of Texas Inc.
     635 Hood Road
     Markham, Ontario, Canada
     L3R 4N6

     and to:

     Gordon H. Hall
     Hall McNeely
     11 Allstate Parkway, Suite 550
     Markham, Ontario L32 978

     Prime Lessor:

     HB Austin Limited Partnership
     1102 Grand Avenue, Suite 300
     Kansas City, Missouri 64106
     Attn: John DeHardt

     or to such other address as any party hereto may, from time to time,
     designate in writing delivered in a like manner.

     9.05  Successors and Assigns. This Sublease shall be binding upon and inure
           ----------------------
to the benefit of the parties hereto and their respective permitted successors
and assigns in accordance with the terms of this Sublease.

     9.06  Time of the Essence.  Time is of the essence in the performance by
           -------------------
Sublessee of its obligations hereunder.

     9.07  Remedies Cumulative Applicable Law.  All rights and remedies of the
           ----------------------------------
parties hereunder shall be cumulative and none shall exclude any other rights or
remedies allowed by law.  This Sublease is declared to be a Texas contract, and
all of the terms hereof shall be construed according to the laws of the State of
Texas.

     9.08  Entire Agreement.  This Sublease and the Agreement constitute the
           ----------------
entire agreement of the parties with respect to the subject matter hereof, and
all prior correspondence, memoranda, agreements or understandings (written or
oral) with respect hereto are merged into and superseded by this Sublease.

     9.09  Severability.  If any term or provision of this Sublease, or the
           ------------
application thereof to any person or circumstance, shall to any extent be
invalid or unenforceable, the remainder of this Sublease, or the application of
such provision to persons or circumstances other than those as to

                                      -10-
<PAGE>

which it is invalid or unenforceable, shall not be affected thereby, and each
provision of this Sublease shall be valid and shall be enforceable to the extent
permitted by law.

     9.10  No Recording. This Sublease (including any exhibits hereto) shall not
           ------------
be recorded without the prior written consent of Sublessor.

     9.11  Entry on Premises.  Sublessor and Prime Lessor shall have access to
           -----------------
the Premises at all reasonable times for reasonable business purposes.

     9.12  Subordination.  This Sublease shall automatically be subordinate and
           -------------
inferior to, and Sublessee shall sign any document requested by Sublessor or
Prime Lessor to cause this Sublease to be subordinate and inferior to, any
mortgage, condominium declaration, condominium regime, encumbrance, instrument
of security, ground lease, master lease, or primary lease (collectively
"Encumbrance/Lease") now or hereafter placed on the Premises and/or the
Building. Subleases shall sign such other documents with respect to such
Encumbrances/Leases as Sublessor or Prime Lessor shall request.

     9.13  Signs.  Sublessee shall have the right, at Sublessee's expense, but
           -----
subject to Prime Lessor's and Sublessor's approval as to appearance, location
and method of attachment to install a sign on the Building.  Sublessee shall
comply with all ordinances, rules and regulations of the City of Austin in
connection with such sign, and shall be responsible, at Sublessee's expense, for
removing the sign, and repairing the Building surface, upon termination of this
Sublease.

     9.14  Sublessor's Termination Right.  Sublessor has the right to terminate
           -----------------------------
the Prime Lease under certain conditions.  Sublessor agrees that before
exercising such termination right, Sublessor shall notify Sublessee of
Sublessor's decision, and shall give Sublessee fifteen (15) days to determine
whether Sublessee wishes to assume Sublessor's position under the Prime Lease.
If Sublessee notifies Sublessor within said fifteen day period that Sublessee
wishes to assume the Prime Lease, Sublessor shall not terminate the Prime Lease
without requesting Prime Lessor's consent to such an assignment. If Prime Lessor
consents to the assignment of the Prime Lease, Sublessor shall assign the Prime
Lease to Sublessee, Sublessee shall terminate effective upon the date of the
assignment. If Sublessee does not notify Sublessor within said fifteen-day
period that Sublessee requests an assignment, or if Prime Lessor does not
consent to the assignment, Sublessor may exercise its termination right without
any further obligation to Sublessee hereunder, however, Sublessor shall notify
Sublessee of such exercise concurrently with the notice to Prime Lessor.

     9.15  Commissions.  Each party warrants to the other that it had no dealing
           -----------
with any broker or agent in connection with the negotiation or execution of this
Sublease.  If any agent or broker shall make a claim for a commission or fee,
the party through whom the agent or broker claims shall be responsible for
payment thereof and hereby indemnifies and holds the other party harmless from
such claim for commission or fees.

                                      -11-
<PAGE>

     9.16  Option to Terminate.  Notwithstanding any provision contained in this
           -------------------
Sublease to the contrary, if Sublessor sells its electronic panel services
division to a party unrelated to Sublessor (a "Third Party Sale"), Sublessor
shall notify Sublessee (the "Notice") of the contemplated Third Party Sale at
least sixty (60) days before the closing of the Third Party Sale.  Sublessee
shall have the right, to be exercised within fifteen (15) days after delivery to
Sublessee of the Notice, to terminate this Sublease.  Exercise of such right of
termination shall be effected only by notice delivered to Sublessor within said
fifteen-day period.

     9.17  Parking.  Sublessee and its agents, employees and invitees shall park
           -------
only in those areas designated by Sublessor for parking and shall not park on
any public or private streets contiguous to, surrounding or in the vicinity of
the Property. Sublessor reserves the option to designate portions of the parking
areas upon the Property for parking for visitors and customers of Sublessor and
other tenants of the Building. Sublessee agrees that Sublessee and Sublessee's
agents and employees shall not park within any visitor parking area so
designated by Sublessor. Sublessor shall not be liable or responsible for any
loss of or to any car or vehicle or equipment or other property therein or
damage to property or injuries (fatal or nonfatal) from any cause whatsoever
while such car or vehicle is on the Property or parked within said parking
areas. Sublessor may make, modify, and enforce rules and regulations relating to
the parking of automobiles and Sublessee will abide by such rules and
regulations. If the availability of spaces within the Property becomes a
problem, Sublessor may adopt a parking rule limiting each tenant of the Building
to a pro rata share of the parking on the Property.

     9.18  Attorney's Fees.  If any action or proceeding is brought to enforce
           ---------------
any term, covenant or condition of this Sublease on the part of Sublessor or
Sublessee, the prevailing party in such action or proceeding shall be entitled
to reasonable attorneys' fees to be fixed by the court therein.

     9.19  Security.  Sublessor shall be in no way responsible to Sublessee, its
           --------
agents, employees or invitees for any loss of property from the Premises or
Shared Areas or for any damages to any property thereon from any cause
whatsoever regardless of whether such loss occurs when the area is locked
against entry or not. Sublessee understands and agrees that all persons entering
or leaving the Premises must comply with Sublessor's security procedures,
including wearing identification badges, being accompanied by Sublessor's
personnel, card access controls and such other methods as Sublessor may elect to
use from time to time. Sublessee further understands that Sublessee's agents,
employees, contractors, invitees and visitors shall not be permitted in the
Building other than when they are going to or from the Premises, or using the
Shared Areas. Sublessee agrees to conform to all rules and regulations which
Sublessor may establish in order to maintain the security necessary for
Sublessor's operations within the Building.

     9.20  Environmental Matters. Sublessor has advised Sublessee, and Sublessee
           ---------------------
understands, that in no event may Sublessee discharge into the Building's
wastewater or storm drainage system more metals or other materials which is
permitted from time to time by the utility providing wastewater service to the
Building (and Sublessee shall be solely responsible for

                                      -12-
<PAGE>

ensuring that no such discharge occurs). Sublessor reserves the right to monitor
discharge at both the point where the discharge leaves the Premises and at the
point where the combined discharge generated by Sublessor and Sublessee leaves
the Building. If any materials exceeding utility limits in fact are discharged
from the Premises, Sublessor, at Sublessee's expense, will construct such
filtering or other systems as may be required in order to eliminate such excess
discharge of materials. Sublessee further agrees that Sublessee shall not change
the Business in a manner that results in the discharge or any materials in
addition to the materials currently being discharged without Sublessor's prior
written consent. In this penalties, liabilities, and costs (including reasonable
attorneys' fees and court costs) caused by or arising out of (i) a violation of
the foregoing prohibition or (ii) the presence or any release of any Hazardous
Materials on, under, or about the Premises during Sublessee's occupancy or
control of the Premises. Sublessee shall clean up, remove, remediate and repair
any soil or ground water contamination and damage caused by the presence or
release of any Hazardous Materials in, on, under, or about the Premises during
Sublessee's occupancy of the Premises in conformance with the requirements of
applicable law. Sublessee shall immediately give Sublessor written notice of any
suspected breach of this Paragraph, upon learning of the presence of any release
of any Hazardous Materials, and upon receiving any notice from governmental
agencies pertaining to Hazardous Materials which may affect the Premises. The
obligations of Sublessee hereunder shall survive the expiration or earlier
termination, for any reason, of this Lease.

                                      -13-
<PAGE>

     IN WITNESS WHEREOF, the undersigned Sublessor and Sublessee have executed
this Sublease on the dates set forth hereinbelow.

SUBLESSOR:                               RADIAN INTERNATIONAL, LLC, a Delaware
---------
                                         limited liability company

                                         By /s/ Donald M. Carlton
                                            ------------------------------------
                                            President

                                            Date: March 29, 1996
                                                  ------------------------------

SUBLESSEE:                               THE SMT CENTRE OF TEXAS INC., a Texas
---------
                                         corporation

                                         By /s/ Paul Walker
                                            ------------------------------------
                                            President

                                            Date: March 29, 1996
                                                  ------------------------------

                                      -14-
<PAGE>

                                  EXHIBIT "B"

                            BASIC LEASE INFORMATION

Lease Date:                        June 3, 1991

Tenant:                            Radian Corporation, a Texas corporation

Address of Tenant:                 Post Office Box 201088
                                   Austin, Texas 78720-1088

Contact:                           Erwin Kouba   Telephone: (512) 454-4797

Landlord:                          HB Austin Limited Partnership, a Kansas
                                   limited partnership

Address of Landlord:               1102 Grand Avenue, Suite 300
                                   Kansas City, Missouri 64106

Contact:                           John DeHardt  Telephone: (816) 842-2690

Premises:                          Lot 1, BRATTON-GRAND SUBDIVISION, a
                                   subdivision in Travis County, Texas,
                                   according to the map or plat of record in
                                   Volume 58, Pages 174-175, of the Plat Records
                                   of Travis County, Texas, together with all
                                   improvements located thereon, including a
                                   building (the "Building"), locally known as
                                   15508 Bratton Lane, Austin, Texas.

Lease Term:                        The period commencing on the Commencement
                                   Date and, subject to and upon the terms and
                                   conditions set forth herein, and in any
                                   exhibit or addendum hereto, continuing until
                                   July 31, 2001.

Commencement Date:                 June 15, 1991

Rental:                            $33,813.00 per month. The Rental shall
                                   increase in accordance with the provisions of
                                   Exhibit C attached hereto.
                                   ---------

Rental Commencement
  Date:                            August 1, 1991

                                      -15-
<PAGE>

Permitted Use:                     Tenant shall use and occupy the premises for
                                   manufacturing and laboratory purposes and for
                                   purposes incidental thereto.

The foregoing Basic Lease Information is hereby incorporated into and made a
part of the lease attached hereto.

Each reference in the lease to the information or definitions set forth in the
Basic Lease Information shall mean and refer to the information and definitions
hereinabove set forth and shall be used in conjunction with and limited by all
references thereto in the provisions of the lease.  In the event of any conflict
between the Basic Lease Information and the lease, the lease shall control.

                         LANDLORD:

                         HB AUSTIN LIMITED PARTNERSHIP, a
                         Kansas limited partnership

                         By: /s/ John Dehardt
                             ----------------------------------

                             Name: John Dehardt
                                   ----------------------------

                             Title: General Partner
                                    ---------------------------

                         TENANT:

                         RADIAN CORPORATION, a Texas
                         corporation

                         By: /s/ [signature appears here]
                             ----------------------------------

                             Name: ____________________________

                             Title: Vice President
                                    ---------------------------

                                      -16-

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00012-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00012-of-00352.parquet"}]]