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                                                                     EXHIBIT 4.3

                          SECURITIES PURCHASE AGREEMENT

         This Securities Purchase Agreement (this "Agreement") is dated as of
May 30, 2002, among Merix Corporation, an Oregon corporation (the "Company"),
and the purchasers identified on the signature pages hereto (each a "Purchaser"
and collectively the "Purchasers").

         WHEREAS, subject to the terms and conditions set forth in this
Agreement and pursuant to Section 4(2) of the Securities Act (as defined below),
and Rule 506 promulgated thereunder, the Company desires to issue and sell to
the Purchasers, and the Purchasers, severally and not jointly, desire to
purchase from the Company, certain securities of the Company, as more fully
described in this Agreement.

         NOW, THEREFORE, IN CONSIDERATION of the mutual covenants contained in
this Agreement, and for other good and valuable consideration the receipt and
adequacy of which are hereby acknowledged, the Company and the Purchasers agree
as follows:

                                   ARTICLE I.
                                   DEFINITIONS

         1.1   Definitions. In addition to the terms defined elsewhere in this
Agreement, for all purposes of this Agreement, the following terms have the
meanings indicated in this Section 1.1:

               "Action" means any action, suit, inquiry, notice of violation,
proceeding (including any partial proceeding such as a deposition) or
investigation pending or threatened in writing against or affecting the Company
or any of its properties before or by any court, arbitrator, governmental or
administrative agency, regulatory authority (federal, state, county, local or
foreign), stock market or exchange.

               "Affiliate" means any Person that, directly or indirectly through
one or more intermediaries, controls or is controlled by or is under common
control with a Person, as such terms are used in and construed under Rule 144.

               "Business Day" means any day except Saturday, Sunday and any day
which shall be a federal legal holiday or a day on which banking institutions in
the State of New York or the State of Oregon are authorized or required by law
or other governmental action to close.

               "Closing" means the closing of the purchase and sale of the
Debentures pursuant to Section 2.1.

               "Closing Date" means the date of the Closing.

               "Commission" means the Securities and Exchange Commission.

               "Common Stock" means the common stock of the Company, no par
value, and any securities into which such common stock may hereafter be
reclassified.

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               "Company Counsel" means Perkins Coie LLP.

               "Debentures" means $25,000,000 in aggregate principal amount of
6.5% Convertible Debentures due May 30, 2007 in the form of Exhibit A issuable
by the Company to the Purchasers hereunder.

               "Debt Ratio" means, on any Business Day, a fraction where the
numerator equals the aggregate Indebtedness of the Company on such Business Day
and the denominator equals the sum of the (i) aggregate Indebtedness of the
Company on such Business Day, (ii) Shareholders' equity reflected on the latest
balance sheet contained in the Company's most recent report on Form 10-Q or Form
10-K filed with the Commission and (iii) changes in the Company's common stock
account and preferred stock account since the date of such balance sheet, as
certified by the Company's Chief Financial Officer, if requested by a Purchaser.

               "Effective Date" means the date that the initial Registration
Statement required by the Registration Rights Agreement is first declared
effective by the Commission.

               "Exchange Act" means the Securities Exchange Act of 1934, as
amended.

               "Indebtedness" means any debt for borrowed money or capital
leases.

               "Lien" means any lien, charge, encumbrance, security interest,
right of first refusal or other restrictions of any kind.

               "Losses" means any losses, liabilities, obligations, claims,
contingencies, damages, costs and expenses, including all judgments, amounts
paid in settlements, court costs and reasonable attorneys' fees and costs of
investigation.

               "Person" means an individual or corporation, partnership, trust,
incorporated or unincorporated association, joint venture, limited liability
company, joint stock company, government (or an agency or subdivision thereof)
or other entity of any kind.

               "Proceeding" means an action, claim, suit, investigation or
proceeding (including, without limitation, an investigation or partial
proceeding, such as a deposition), whether commenced or threatened concerning
the interpretation, enforcement or defense of any transaction contemplated by
any Transaction Document (whether brought against a party hereto or such party's
Affiliates, directors, officers, employees or agents).

               "Purchaser Counsel" means Robinson Silverman Pearce Aronsohn &
Berman LLP.

               "Registration Statement" means a registration statement meeting
the requirements set forth in the Registration Rights Agreement and covering the
resale by the Purchasers of the Underlying Shares.

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               "Registration Rights Agreement" means the Registration Rights
Agreement, dated as of the date of this Agreement, among the Company and the
Purchasers, in the form of Exhibit B.

               "Rule 144" means Rule 144 promulgated by the Commission pursuant
to the Securities Act, as such Rules may be amended from time to time, or any
similar rule or regulation hereafter adopted by the Commission having
substantially the same effect as such Rule.

               "Securities" means the Debentures and the Underlying Shares.

               "Securities Act" means the Securities Act of 1933, as amended.

               "Trading Day" means: (a) a day on which the shares of Common
Stock are traded on a Trading Market, or (b) if the shares of Common Stock are
not listed on a Trading Market, a day on which the shares of Common Stock are
traded in the over-the-counter market, as reported by the OTC Bulletin Board, or
(c) if the shares of Common Stock are not quoted on the OTC Bulletin Board, a
day on which the shares of Common Stock are quoted in the over-the-counter
market as reported by the National Quotation Bureau Incorporated (or any similar
organization or agency succeeding its functions of reporting prices); provided,
that in the event that the shares of Common Stock are not listed or quoted as
set forth in (a), (b) and (c) hereof, then Trading Day shall mean a Business
Day.

               "Trading Market" means whichever of the Nasdaq National Market,
the New York Stock Exchange, American Stock Exchange as Nasdaq SmallCap Market
on which the Common Stock is then listed or quoted on the date in question.

               "Transaction Documents" means this Agreement, the Debentures, the
Registration Rights Agreement and the Transfer Agent Instructions.

               "Underlying Shares" means the shares of Common Stock issuable
upon conversion of the Debentures.

                                   ARTICLE II.
                                PURCHASE AND SALE

         2.1   Closing. Subject to the terms and conditions set forth in this
Agreement, at the Closing the Company shall issue and sell to the Purchasers,
and the Purchasers shall, severally and not jointly, purchase from the Company,
the Debentures. The Closing shall take place at the offices of Purchaser Counsel
concurrently with the execution and delivery of this Agreement by the parties or
at such other location or time as the parties may agree.

         2.2   Closing Deliveries. At the Closing, the Company shall deliver or
cause to be delivered to each Purchaser the following:

                    (i)    this Agreement duly executed by the Company;

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                    (ii)   a Debenture registered in the name of such Purchaser,
in the aggregate principal amount indicated below such Purchaser's name on the
signature page to this Agreement;

                    (iii)  the legal opinion of Company Counsel, in agreed form,
addressed to the Purchasers;

                    (iv)   the Registration Rights Agreement duly executed by
the Company; and

                    (v)    the Transfer Agent Instructions duly executed by the
Company and acknowledged by the Company's transfer agent.

               (b)  At the Closing, each Purchaser shall deliver or cause to be
delivered to the Company the following:

                    (i)    this Agreement duly executed by such Purchaser;

                    (ii)   the aggregate purchase price indicated below such
Purchaser's name on the signature page of this Agreement, in United States
dollars, by wire transfer to an account designated in writing by the Company for
such purpose; and

                    (iii)  the Registration Rights Agreement duly executed by
such Purchaser.

                                  ARTICLE III.
                         REPRESENTATIONS AND WARRANTIES

         3.1   Representations and Warranties of the Company. The Company hereby
makes the following representations and warranties to each Purchaser that except
as set forth in the Disclosure Schedules attached hereto:

               (a)  Subsidiaries. The Company has no direct or indirect
subsidiaries.

               (b)  Organization and Qualification. The Company is a company
duly incorporated or otherwise organized and validly existing under the laws of
the State of Oregon, with the requisite power and authority to own and use its
properties and assets and to carry on its business as currently conducted. The
Company is not in violation of any of the provisions of its articles of
incorporation, bylaws or other organizational or charter documents. The Company
is duly qualified to conduct business and is in good standing as a foreign
corporation or other entity in each jurisdiction in which the nature of the
business conducted or property owned by it makes such qualification necessary,
except where the failure to be so qualified or in good standing, as the case may
be, could not, individually or in the aggregate, have or reasonably be expected
to result in (i) a material adverse affect on the legality, validity or
enforceability of any Transaction Document, (ii) a material adverse effect on
the results of operations, assets, prospects, business or condition (financial
or otherwise) of the Company, or (iii) an adverse impairment to the

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Company's ability to perform on a timely basis its obligations under any
Transaction Document (any of (i), (ii) or (iii), a "Material Adverse Effect").

               (c)  Authorization; Enforcement. The Company has the requisite
power and authority to enter into and to consummate the transactions
contemplated by each of the Transaction Documents and otherwise to carry out its
obligations thereunder. The execution and delivery of each of the Transaction
Documents by the Company and the consummation by it of the transactions
contemplated thereby have been duly authorized by all necessary action on the
part of the Company and no further action is required by the Company in
connection therewith. Each Transaction Document has been (or upon delivery will
have been) duly executed by the Company and, when delivered in accordance with
the terms hereof, will constitute the valid and binding obligation of the
Company enforceable against the Company in accordance with its terms, except as
such enforceability may be limited by applicable bankruptcy, insolvency, or
similar laws relating to, or affecting generally the enforcement of, creditors'
rights and remedies or by other equitable principles of general application.

               (d)  No Conflicts. The execution, delivery and performance of the
Transaction Documents by the Company and the consummation by the Company of the
transactions contemplated thereby do not and will not (i) conflict with or
violate any provision of the Company's articles of incorporation, bylaws or
other organizational or charter documents, or (ii) conflict with, or constitute
a default (or an event that with notice or lapse of time or both would become a
default) under, or give to others any rights of termination, amendment,
acceleration or cancellation (with or without notice, lapse of time or both) of,
any agreement, credit facility, debt or other instrument (evidencing a Company
debt or otherwise) or other understanding to which the Company is a party or by
which any property or asset of the Company is bound or affected, or (iii) result
in a violation of any law, rule, regulation, order, judgment, injunction, decree
or other restriction of any court or governmental authority to which the Company
is subject (including federal and state securities laws and regulations), or by
which any property or asset of the Company is bound or affected; except in the
case of each of clauses (ii) and (iii), such as could not, individually or in
the aggregate, have or reasonably be expected to result in a Material Adverse
Effect.

               (e)  Filings, Consents and Approvals. The Company is not required
to obtain any consent, waiver, authorization or order of, give any notice to, or
make any filing or registration with, any court or other federal, state, local
or other governmental authority or other Person in connection with the
execution, delivery and performance by the Company of the Transaction Documents,
other than (i) the filing with the Commission of one or more Registration
Statements and (ii) the application(s) to each Trading Market for the listing of
the Underlying Shares for trading thereon in the time and manner required
thereby (collectively, the "Required Approvals").

               (f)  Issuance of the Securities. The Securities have been duly
authorized and, when issued and paid for in accordance with the Transaction
Documents, will be duly and validly issued, fully paid and nonassessable, free
and clear of all Liens. The Company has reserved from its duly authorized
capital stock the maximum number of shares of Common

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Stock issuable pursuant to the Debentures in order to issue the full number of
Underlying Shares as are or may become issuable in accordance with the
Debentures.

               (g)  Capitalization. The number of shares and type of all
authorized, issued and outstanding capital stock of the Company is set forth in
Schedule 3.1(g). No securities of the Company are entitled to preemptive or
similar rights, and no Person has any right of first refusal, preemptive right,
right of participation, or any similar right to participate in the transactions
contemplated by the Transaction Documents. Except as a result of the purchase
and sale of the Securities and as set forth in Schedule 3.1(g), there are no
outstanding options, warrants, script rights to subscribe to, calls or
commitments of any character whatsoever relating to, or securities, rights or
obligations convertible into or exchangeable for, or giving any Person any right
to subscribe for or acquire, any shares of Common Stock, or contracts,
commitments, understandings or arrangements by which the Company is or may
become bound to issue additional shares of Common Stock, or securities or rights
convertible or exchangeable into shares of Common Stock. The issue and sale of
the Securities will not, immediately or with the passage of time, obligate the
Company to issue shares of Common Stock or other securities to any Person (other
than the Purchasers or their permitted assigns and transferees) and will not
result in a right of any holder of Company securities to adjust the exercise,
conversion, exchange or reset price under such securities.

               (h)  SEC Reports; Financial Statements. The Company has filed all
reports required to be filed by it under the Securities Act and the Exchange
Act, including pursuant to Section 13(a) or 15(d) thereof, for the two years
preceding the date hereof (or such shorter period as the Company was required by
law to file such reports) (the foregoing materials being collectively referred
to herein as the "SEC Reports" and, together with the Schedules to this
Agreement, the "Disclosure Materials") on a timely basis or has received a valid
extension of such time of filing and has filed any such SEC Reports prior to the
expiration of any such extension. The Company has delivered to the Purchasers a
copy of all SEC Reports filed within the 10 days preceding the date hereof. As
of their respective dates, the SEC Reports complied in all material respects
with the requirements of the Securities Act and the Exchange Act and the rules
and regulations of the Commission promulgated thereunder, and none of the SEC
Reports, when filed, contained any untrue statement of a material fact or
omitted to state a material fact required to be stated therein or necessary in
order to make the statements therein, in light of the circumstances under which
they were made, not misleading. The financial statements of the Company included
in the SEC Reports comply in all material respects with applicable accounting
requirements and the rules and regulations of the Commission with respect
thereto as in effect at the time of filing. Such financial statements have been
prepared in accordance with generally accepted accounting principles applied on
a consistent basis during the periods involved ("GAAP"), except as may be
otherwise specified in such financial statements or the notes thereto, and
fairly present in all material respects the financial position of the Company
and its consolidated subsidiaries as of and for the dates thereof and the
results of operations and cash flows for the periods then ended, subject, in the
case of unaudited statements, to normal, immaterial, year-end audit adjustments.

               (i)  Material Changes. Except as set forth on Schedule 3.1(i),
since the date of the latest audited financial statements included within the
SEC Reports, except as specifically

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disclosed in the SEC Reports, (i) there has been no event, occurrence or
development with respect to the Company that has had or that could reasonably be
expected to result in a Material Adverse Effect, (ii) the Company has not
incurred any liabilities (contingent or otherwise) other than (A) trade payables
and accrued expenses incurred in the ordinary course of business consistent with
past practice and (B) liabilities not required to be reflected in the Company's
financial statements pursuant to GAAP or required to be disclosed in filings
made with the Commission, (iii) the Company has not altered its method of
accounting or the identity of its auditors, (iv) the Company has not declared or
made any dividend or distribution of cash or other property to its stockholders
or purchased, redeemed or made any agreements to purchase or redeem any shares
of its capital stock, and (v) the Company has not issued any equity securities
to any officer, director or Affiliate, except pursuant to existing Company stock
option plans. The Company does not have pending before the Commission any
request for confidential treatment of information.

               (j)  Litigation. There is no Action which (i) adversely affects
or challenges the legality, validity or enforceability of any of the Transaction
Documents or the Securities or (ii) could, if there were an unfavorable
decision, individually or in the aggregate, have or reasonably be expected to
result in a Material Adverse Effect. Neither the Company, nor, to the knowledge
of the Company, is any director or officer thereof, is or has been the subject
of any Action involving a claim of violation of or liability under federal or
state securities laws or a claim of breach of fiduciary duty. There has not
been, and to the knowledge of the Company, there is not pending or contemplated,
any investigation by the Commission involving the Company or any current or
former director or officer of the Company. The Commission has not issued any
stop order or other order suspending the effectiveness of any registration
statement filed by the Company under the Exchange Act or the Securities Act.

               (k)  Labor Relations. No material labor dispute exists or, to the
knowledge of the Company, is imminent with respect to any of the employees of
the Company.

               (l)  Compliance. Except as set forth in Schedule 3.1(l), the
Company is not (i) in default under or in violation of (and no event has
occurred that has not been waived that, with notice or lapse of time or both,
would result in a default by the Company under), nor has the Company received
notice of a claim that it is in default under or that it is in violation of, any
indenture, loan or credit agreement or any other agreement or instrument to
which it is a party or by which it or any of its properties is bound (whether or
not such default or violation has been waived), (ii) in violation of any order
of any court, arbitrator or governmental body, or (iii) or has been in violation
of any statute, rule or regulation of any governmental authority, including
without limitation all foreign, federal, state and local laws relating to taxes,
environmental protection, occupational health and safety, product quality and
safety and employment and labor matters, except in each case as could not,
individually or in the aggregate, have or reasonably be expected to result in a
Material Adverse Effect.

               (m)  Regulatory Permits. The Company possesses all certificates,
authorizations and permits issued by the appropriate federal, state, local or
foreign regulatory authorities necessary to conduct its business as described in
the SEC Reports, except where the failure to possess such permits would not,
individually or in the aggregate, have or reasonably be

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expected to result in a Material Adverse Effect ("Material Permits"), and the
Company has not received any notice of proceedings relating to the revocation or
modification of any Material Permit.

               (n)  Title to Assets. The Company has good and marketable title
in fee simple to all real property owned by it that is material to its business
and good and marketable title in all personal property owned by it that is
material to its business, in each case free and clear of all Liens, except for
Liens as do not materially affect the value of such property and do not
materially interfere with the use made and proposed to be made of such property
by the Company. Any real property and facilities held under lease by the Company
are held by it under valid, subsisting and enforceable leases of which the
Company is in compliance.

               (o)  Patents and Trademarks. The Company has, or has rights to
use, all patents, patent applications, trademarks, trademark applications,
service marks, trade names, copyrights, licenses and other similar rights that
are necessary or material for use in connection with its business as described
in the SEC Reports and which the failure to so have could, individually or in
the aggregate, have or reasonably be expected to result in a Material Adverse
Effect (collectively, the "Intellectual Property Rights"). The Company has not
received a written notice that the Intellectual Property Rights used by the
Company violates or infringes upon the rights of any Person. Except as set forth
in the SEC Reports, to the knowledge of the Company, all such Intellectual
Property Rights are enforceable and there is no existing infringement by another
Person of any of the Intellectual Property Rights.

               (p)  Insurance. The Company is insured by insurers of recognized
financial responsibility against such losses and risks and in such amounts as
are prudent and customary in the businesses in which the Company is engaged.
Except as set forth in Schedule 3.1(p), the Company believes that it will be
able to renew its existing insurance coverage as and when such coverage expires
or to obtain similar coverage from similar insurers as may be necessary to
continue its business without a significant increase in cost.

               (q)  Transactions With Affiliates and Employees. Except as set
forth in the SEC Reports, none of the officers or directors of the Company and,
to the knowledge of the Company, none of the employees of the Company is
presently a party to any material transaction with the Company (other than for
services as employees, officers and directors), including any contract,
agreement or other arrangement providing for the furnishing of services to or
by, providing for rental of real or personal property to or from, or otherwise
requiring payments to or from any officer, director or such employee or, to the
knowledge of the Company, any entity in which any officer, director, or any such
employee has a substantial interest or is an officer, director, trustee or
partner.

               (r)  Internal Accounting Controls. The Company maintains a system
of internal accounting controls sufficient to provide reasonable assurance that
(i) transactions are executed in accordance with management's general or
specific authorizations, (ii) transactions are recorded as necessary to permit
preparation of financial statements in conformity with generally accepted
accounting principles and to maintain asset accountability, (iii) access to
assets is permitted only in accordance with management's general or specific
authorization, and

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(iv) the recorded accountability for assets is compared with the existing assets
at reasonable intervals and appropriate action is taken with respect to any
differences.

               (s)  Solvency. Based on the financial condition of the Company as
of the Closing Date, (i) the Company's fair saleable value of its assets exceeds
the amount that will be required to be paid on or in respect of the Company's
existing debts and other liabilities (including known contingent liabilities) as
they mature; (ii) the Company's assets do not constitute unreasonably small
capital to carry on its business for the current fiscal year as now conducted
and as proposed to be conducted, including its capital needs, taking into
account the particular capital requirements of the business conducted by the
Company, and projected capital requirements and capital availability thereof;
and (iii) the current cash flow of the Company, together with the proceeds the
Company would receive, were it to liquidate all of its assets, after taking into
account all anticipated uses of the cash, would be sufficient to pay all amounts
on or in respect of its debt when such amounts are required to be paid. The
Company does not intend to incur debts beyond its ability to pay such debts as
they mature (taking into account the timing and amounts of cash to be payable on
or in respect of its debt).

               (t)  Certain Fees. Except as described in Schedule 3.1(t), no
brokerage or finder's fees or commissions are or will be payable by the Company
to any broker, financial advisor or consultant, finder, placement agent,
investment banker, bank or other Person with respect to the transactions
contemplated by this Agreement. The Purchasers shall have no obligation with
respect to any fees or with respect to any claims made by or on behalf of other
Persons engaged by the Company for fees of a type contemplated in this Section
that may be due in connection with the transactions contemplated by this
Agreement.

               (u)  Certain Registration Matters. Assuming the accuracy of the
Purchasers' representations and warranties set forth in Section 3.2(b)-(f), no
registration under the Securities Act is required for the offer and sale of the
Securities by the Company to the Purchasers as contemplated by the Transaction
Documents. Except as set forth in Schedule 3.1(u), the Company has not granted
or agreed to grant to any Person any rights (including "piggy-back" registration
rights) to have any securities of the Company registered with the Commission or
any other governmental authority that have not been satisfied. The Company is
eligible to register the resale of its Common Stock for resale by the Purchasers
under Form S-3 promulgated under the Securities Act. The Company has not sold,
offered for sale or solicited offers to buy or otherwise negotiated in respect
of any security that would be integrated with the offer or sale of the
Securities for purposes of the rules and regulations of any Trading Market.

               (v)  Listing and Maintenance Requirements. The Company has not,
in the two years preceding the date hereof, received notice (written or oral)
from any Trading Market on which the Common Stock is or has been listed or
quoted to the effect that the Company is not in compliance with the listing or
maintenance requirements of such Trading Market. The Company is, and has no
reason to believe that it will not in the foreseeable future continue to be, in
compliance with all such listing and maintenance requirements of the Trading
Market. The issuance and sale of the Securities hereunder do not contravene the
rules and regulations of the Trading Market and no shareholder approval is
required for the Company to fulfill its obligations

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under the Transaction Documents, including issuing and delivering to the
Purchasers the maximum number of Underlying Shares issuable pursuant to the
Debentures.

               (w)  Investment Company. The Company is not, and is not an
Affiliate of, an "investment company" within the meaning of the Investment
Company Act of 1940, as amended.

               (x)  Seniority. As of the date of this Agreement and except for
the indebtedness being paid in full pursuant to Section 4.8, no indebtedness of
the Company is senior to the Debentures in right of payment, whether with
respect to interest or upon liquidation or dissolution, or otherwise.

               (y)  Application of Takeover Protections. The Company has taken
all necessary action, if any, in order to render inapplicable any control share
acquisition, business combination, poison pill (including any distribution under
a rights agreement) or other similar anti-takeover provision under the Company's
articles of incorporation (or similar charter documents) or the laws of its
state of incorporation that is or could become applicable to the Purchasers as a
result of the Purchasers and the Company fulfilling their obligations or
exercising their rights under the Transaction Documents, including without
limitation the Company's issuance of the Securities and the Purchasers'
ownership of the Securities.

               (z)  Disclosure. Except as set forth in Schedule 3.1(z), the
Company confirms that neither the Company nor any other Person acting on its
behalf has provided any of the Purchasers or their agents or counsel with any
information that the Company believes constitutes material, non-public
information. The Company understands and confirms that the Purchasers will rely
on the foregoing representations and covenants in effecting transactions in
securities of the Company. The SEC Reports and any other information regarding
the Company, its business and the transactions contemplated hereby, provided by
the Company to the Purchasers, taken as a whole, are true and correct and do not
contain any untrue statement of a material fact or omit to state any material
fact necessary in order to make the statements made therein, in light of the
circumstances under which they were made, not misleading.

         3.2   Representations and Warranties of the Purchasers. Each Purchaser
hereby, for itself and for no other Purchaser, represents and warrants to the
Company as follows:

               (a)  Organization; Authority. Such Purchaser is an entity duly
organized, validly existing and in good standing under the laws of the
jurisdiction of its organization with the requisite corporate or partnership
power and authority to enter into and to consummate the transactions
contemplated by the Transaction Documents and otherwise to carry out its
obligations thereunder. The execution, delivery and performance by such
Purchaser of the transactions contemplated by this Agreement has been duly
authorized by all necessary corporate or partnership action on the part of such
Purchaser. Each of this Agreement and the Registration Rights Agreement has been
duly executed by such Purchaser, and when delivered by such Purchaser in
accordance with terms hereof, will constitutes the valid and legally binding
obligation of such Purchaser, enforceable against it in accordance with its
terms.

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              (b) Investment Intent. Such Purchaser is acquiring the Securities
as principal for its own account for investment purposes only and not with a
view to or for distributing or reselling such Securities or any part thereof,
without prejudice, however, to such Purchaser's right at all times to sell or
otherwise dispose of all or any part of such Securities in compliance with
applicable federal and state securities laws. Nothing contained herein shall be
deemed a representation or warranty by such Purchaser to hold Securities for any
period of time. Such Purchaser is acquiring the Securities hereunder in the
ordinary course of its business. Such Purchaser does not have any agreement or
understanding, directly or indirectly, with any Person to distribute any of the
Securities.

              (c) Purchaser Status. Such Purchaser is an "accredited investor"
as defined in Rule 501(a) under the Securities Act. The Purchaser has been
organized in the state or jurisdiction set forth on its signature page hereto.

              (d) Experience of such Purchaser. Such Purchaser, either alone or
together with its representatives, has such knowledge, sophistication and
experience in business and financial matters so as to be capable of evaluating
the merits and risks of the prospective investment in the Securities, and has so
evaluated the merits and risks of such investment. Such Purchaser is able to
bear the economic risk of an investment in the Securities and, at the present
time, is able to afford a complete loss of such investment.

              (e) General Solicitation. Such Purchaser is not purchasing the
Securities as a result of any advertisement, article, notice or other
communication regarding the Securities published in any newspaper, magazine or
similar media or broadcast over television or radio or presented at any seminar
or any other general solicitation or general advertisement.

              (f) Access to Information. Such Purchaser acknowledges that it has
reviewed the Disclosure Materials and has been afforded (i) the opportunity to
ask such questions as it has deemed necessary of, and to receive answers from,
representatives of the Company concerning the terms and conditions of the
offering of the Securities and the merits and risks of investing in the
Securities; (ii) access to information about the Company and its financial
condition, results of operations, business, properties, management and prospects
sufficient to enable it to evaluate its investment; and (iii) the opportunity to
obtain such additional information that the Company possesses or can acquire
without unreasonable effort or expense that is necessary to make an informed
investment decision with respect to the investment. Neither such inquiries nor
any other investigation conducted by or on behalf of such Purchaser or its
representatives or counsel shall modify, amend or affect such Purchaser's right
to rely on the truth, accuracy and completeness of the Disclosure Materials and
the Company's representations and warranties contained in the Transaction
Documents.

         The Company acknowledges and agrees that each Purchaser does not make
or has not made any representations or warranties with respect to the
transactions contemplated hereby other than those specifically set forth in this
Section 3.2.

                                      -11-

<PAGE>

                                   ARTICLE IV.
                         OTHER AGREEMENTS OF THE PARTIES

         4.1    Transfer Restrictions. Securities may only be disposed of in
compliance with state and federal securities laws. In connection with any
transfer of Securities other than pursuant to an effective registration
statement, to the Company, to an Affiliate of a Purchaser or in connection with
a pledge as contemplated in Section 4.1(b), the Company may require the
transferor thereof to provide to the Company an opinion of counsel selected by
the transferor, the form and substance of which opinion shall be reasonably
satisfactory to the Company, to the effect that such transfer does not require
registration of such transferred Securities under the Securities Act.
Notwithstanding anything herein to the contrary, a Purchaser shall not, absent
consent of the Company, which consent shall not be unreasonably withheld,
transfer any Debentures to a Person whose primary business is not investing in
securities and which is not an "accredited investor" as defined in Rule 501(a)
under the Securities Act.

                (a) The Securities will contain the following legend, so long as
is required by this Section 4.1(b):

                [NEITHER] THESE SECURITIES [NOR THE SECURITIES ISSUABLE UPON
                [CONVERSION] OF THESE SECURITIES] HAVE [NOT] BEEN REGISTERED
                WITH THE SECURITIES AND EXCHANGE COMMISSION OR THE SECURITIES
                COMMISSION OF ANY STATE IN RELIANCE UPON AN EXEMPTION FROM
                REGISTRATION UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE
                "SECURITIES ACT"), AND, ACCORDINGLY, MAY NOT BE OFFERED OR SOLD
                EXCEPT PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT UNDER THE
                SECURITIES ACT OR PURSUANT TO AN AVAILABLE EXEMPTION FROM, OR IN
                A TRANSACTION NOT SUBJECT TO, THE REGISTRATION REQUIREMENTS OF
                THE SECURITIES ACT AND IN ACCORDANCE WITH APPLICABLE STATE
                SECURITIES LAWS AS EVIDENCED BY A LEGAL OPINION OF COUNSEL TO
                THE TRANSFEROR TO SUCH EFFECT, THE SUBSTANCE OF WHICH SHALL BE
                REASONABLY ACCEPTABLE TO THE COMPANY. THESE SECURITIES AND THE
                SECURITIES ISSUABLE UPON EXERCISE OF THESE SECURITIES MAY BE
                PLEDGED IN CONNECTION WITH A BONA FIDE MARGIN ACCOUNT OR OTHER
                LOAN SECURED BY SUCH SECURITIES.

                The Company acknowledges and agrees that a Purchaser may from
time to time pledge pursuant to a bona fide margin agreement or grant a security
interest in some or all of the Securities and, if required under the terms of
such arrangement, such Purchaser may transfer pledged or secured Securities to
the pledgees or secured parties. Such a pledge or transfer would not be subject
to approval or consent of the Company and no legal opinion of legal counsel of
the pledgee, secured party or pledgor shall be required in connection therewith.
Further, no notice shall be required of such pledge. At the appropriate
Purchaser's expense, the Company will execute and deliver such reasonable
documentation as a pledgee or secured party of Securities may reasonably request
in connection with a pledge or transfer of the Securities, including the

                                      -12-

<PAGE>

preparation and filing of any required prospectus supplement under Rule
424(b)(3) of the Securities Act or other applicable provision of the Securities
Act to appropriately amend the list of Selling Stockholders thereunder.

              (b) Certificates evidencing the Underlying Shares shall not
contain any legend (including the legend set forth in Section 4.1(b)), (i) while
a registration statement (including the Registration Statement) covering the
resale of such Underlying Shares is effective under the Securities Act, or (ii)
following any sale of such Underlying Shares pursuant to Rule 144, or (iii) if
such Underlying Shares are eligible for sale under Rule 144(k), or (iv) if such
legend is not required under applicable requirements of the Securities Act
(including judicial interpretations and pronouncements issued by the Staff of
the Commission). The Company shall cause its counsel to issue the legal opinion
included in the Transfer Agent Instructions to the Company's transfer agent on
the Effective Date. Following the Effective Date or at such earlier time as a
legend is no longer required for Underlying Shares under this Section 4.1(c),
the Company will, no later than three Trading Days following the delivery by a
Purchaser to the Company or the Company's transfer agent of a certificate
representing Underlying Shares containing a restrictive legend, deliver or cause
to be delivered to such Purchaser a certificate representing such Underlying
Shares that is free from all restrictive and other legends. Except in connection
with the delivery of an Advice (as defined in the Registration Rights Agreement)
pursuant to Section 6(d) of the Registration Rights Agreement, the Company may
not make any notation on its records or give instructions to any transfer agent
of the Company that enlarge the restrictions on transfer set forth in this
Section.

         4.2  Furnishing of Information. As long as any Purchaser owns
Securities, the Company covenants to timely file (or obtain extensions in
respect thereof and file within the applicable grace period) all reports
required to be filed by the Company after the date hereof pursuant to the
Exchange Act. As long as any Purchaser owns Securities, if the Company is not
required to file reports pursuant to such laws, it will prepare and furnish to
the Purchasers and make publicly available in accordance with Rule 144(c) such
information as is required for the Purchasers to sell the Securities under Rule
144. The Company further covenants that it will take such further action as any
holder of Securities may reasonably request, all to the extent required from
time to time to enable such Person to sell such Securities without registration
under the Securities Act within the limitation of the exemptions provided by
Rule 144.

         4.3  Integration. The Company shall not, and shall use its best efforts
to ensure that no Affiliate of the Company shall, sell, offer for sale or
solicit offers to buy or otherwise negotiate in respect of any security (as
defined in Section 2 of the Securities Act) that would be integrated with the
offer or sale of the Securities in a manner that would require the registration
under the Securities Act of the sale of the Securities to the Purchasers, or
that would be integrated with the offer or sale of the Securities for purposes
of the rules and regulations of any Trading Market.

         4.4  Securities Laws Disclosure; Publicity. The Company shall (i) on
the Closing Date (x) issue a press release reasonable acceptable to the
Purchasers disclosing the transactions contemplated hereby and (y) file a
Current Report on Form 8-K disclosing the transactions contemplated hereby and
(ii) make such other filings and notices in the manner and time required by the
Commission. Except as set forth above, the Company shall not publicly disclose
the name

                                      -13-

<PAGE>

of any Purchaser, or include the name of any Purchaser in any filing with the
Commission or any regulatory agency or Trading Market, without the prior written
consent of such Purchaser, except to the extent such disclosure is required by
law or Trading Market regulations, in which case the Company shall provide the
Purchasers with prior notice of such disclosure.

         4.5 Indemnification of Purchasers. The Company will indemnify and hold
the Purchasers and their directors, officers, shareholders, partners, employees
and agents (each, a "Purchaser Party") harmless from any and all Losses that any
such Purchaser Party may suffer or incur as a result of or relating to (a) any
misrepresentation, breach or inaccuracy, or any allegation by a third party
that, if true, would constitute a breach or inaccuracy, of any of the
representations, warranties, covenants or agreements made by the Company in any
Transaction Document; or (b) any Action brought or made against such Purchaser
Party by a shareholder of the Company and solely arising out of or resulting
from the execution, delivery, performance or enforcement of this Agreement or
any of the other Transaction Documents. In addition to the indemnity contained
herein, the Company will reimburse each Purchaser Party for its reasonable legal
and other expenses (including the cost of any investigation, preparation and
travel in connection therewith) incurred in connection therewith, as such
expenses are incurred.

         4.6 Shareholders Rights Plan. No claim will be made or enforced by the
Company or any other Person that any Purchaser is an "Acquiring Person" under
any shareholders rights plan or similar plan or arrangement in effect or
hereafter adopted by the Company, or that any Purchaser could be deemed to
trigger the provisions of any such plan or arrangement, by virtue of receiving
Securities under the Transaction Documents or under any other agreement between
the Company and the Purchasers.

         4.7 Non-Public Information. The Company covenants and agrees that
neither it nor any other Person acting on its behalf will provide any Purchaser
or its agents or counsel with any information that the Company believes
constitutes material non-public information, unless prior thereto such Purchaser
shall have executed a written agreement regarding the confidentiality and use of
such information. The Company understands and confirms that each Purchaser shall
be relying on the foregoing representations in effecting transactions in
securities of the Company.

         4.8 Use of Proceeds. The Company shall use $20,000,000 (or such lesser
amount then owing) from the net proceeds of the sale of the Securities hereunder
to pay in full any indebtedness owed by the Company to John Hancock Mutual Life
Insurance Company, John Hancock Variable Life Insurance Company, Massachusetts
Mutual Life Insurance Company and CM Life Insurance Company pursuant to 7.92%
Senior Notes due September 15, 2003, with the balance of the net proceeds to be
used by the Company for working capital purposes.

         4.9 Limitations on Future Indebtedness. During the period in which the
Debentures are outstanding, the Company shall not incur any Indebtedness which
results in a Debt Ratio equal to or in excess of 33% (the "Permitted
Indebtedness"). The documentation reflecting all or any portion of the Permitted
Indebtedness shall not, directly or indirectly, preclude the Company from fully
honoring its obligations under the Transaction Documents (including, but not
limited to, the Company's obligation to pay interest in cash on each Interest
Payment Date (as defined in the Debenture) pursuant to the Debenture).

                                      -14-

<PAGE>

                                   ARTICLE V.
                                  MISCELLANEOUS

         5.1  Fees and Expenses. The Company has agreed to reimburse $35,000 to
the Purchasers for the Purchasers' legal and other fees and expenses incurred to
prepare and negotiate the Transaction Documents. Accordingly, in lieu of the
foregoing payment, the Company, on the Closing Date, will direct that the
aggregate amount that the Purchasers are to pay for the Securities at the
Closing, be reduced by $35,000. Except as specified in the immediately preceding
sentence and as contemplated in the Registration Rights Agreement, each party
shall pay the fees and expenses of its advisers, counsel, accountants and other
experts, if any, and all other expenses incurred by such party incident to the
negotiation, preparation, execution, delivery and performance of this Agreement.
The Company shall pay all stamp and other taxes and duties levied in connection
with the sale of the Securities.

         5.2  Entire Agreement. The Transaction Documents, together with the
Exhibits and Schedules thereto, contain the entire understanding of the parties
with respect to the subject matter hereof and supersede all prior agreements and
understandings, oral or written, with respect to such matters, which the parties
acknowledge have been merged into such documents, exhibits and schedules.

         5.3  Notices. Any and all notices or other communications or deliveries
required or permitted to be provided hereunder shall be in writing and shall be
deemed given and effective on the earliest of (a) the date of transmission, if
such notice or communication is delivered via facsimile at the facsimile number
specified in this Section prior to 6:30 p.m. (New York City time) on a Trading
Day, (b) the next Trading Day after the date of transmission, if such notice or
communication is delivered via facsimile at the facsimile number specified in
this Section on a day that is not a Trading Day or later than 6:30 p.m. (New
York City time) on any Trading Day, (c) the Trading Day following the date of
mailing, if sent by U.S. nationally recognized overnight courier service, or (d)
upon actual receipt by the party to whom such notice is required to be given.
The address for such notices and communications shall be as follows:

If to the Company:                  Merix Corporation
                                    1521 Poplar Lane
                                    Forest Grove, Oregon 97116
                                    Attn: Chief Financial Officer
                                    Fax No.: 503-357-1504

With copies to:                     Merix Corporation
                                    1521 Poplar Lane
                                    Forest Grove, Oregon 97116
                                    Attn: Controller
                                    Fax No.: 503-992-4054

                                      -15-

<PAGE>

                          Perkins Coie LLP
                          1211 S.W. Fifth Avenue, Suite 1500
                          Portland, OR  97204-3715
                          Attn:  Patrick J. Simpson
                          Fax No.: 503-727-2222

If to a Purchaser:        To the address set forth under such Purchaser's name
                          on the signature pages hereof

or such other address as may be designated in writing hereafter, in the same
manner, by such Person.

         5.4 Amendments; Waivers. No provision of this Agreement may be waived
or amended except in a written instrument signed, in the case of an amendment,
by the Company and the Purchasers holding a majority in interest of the
Debentures or, in the case of a waiver, by the party against whom enforcement of
any such waiver is sought. No waiver of any default with respect to any
provision, condition or requirement of this Agreement shall be deemed to be a
continuing waiver in the future or a waiver of any subsequent default or a
waiver of any other provision, condition or requirement hereof, nor shall any
delay or omission of either party to exercise any right hereunder in any manner
impair the exercise of any such right.

         5.5 Construction. The headings herein are for convenience only, do not
constitute a part of this Agreement and shall not be deemed to limit or affect
any of the provisions hereof. The language used in this Agreement will be deemed
to be the language chosen by the parties to express their mutual intent, and no
rules of strict construction will be applied against any party. Each of the
parties hereto represents and warrants that it has been advised by counsel. This
Agreement shall be construed as if drafted jointly by the parties, and no
presumption or burden of proof shall arise favoring or disfavoring any party by
virtue of the authorship of any provisions of this Agreement or any of the
Transaction Documents.

         5.6 Successors and Assigns. This Agreement shall be binding upon and
inure to the benefit of the parties and their successors and permitted assigns.
The Company may not assign this Agreement or any rights or obligations hereunder
without the prior written consent of the Purchasers. Any Purchaser may assign
any or all of its rights under this Agreement to any Person to whom such
Purchaser assigns or transfers any Securities, subject to Section 4.1 and
provided such transferee agrees in writing to be bound, with respect to the
transferred Securities, by the provisions hereof that apply to the "Purchasers."

         5.7 No Third-Party Beneficiaries. This Agreement is intended for the
benefit of the parties hereto and their respective successors and permitted
assigns and is not for the benefit of, nor may any provision hereof be enforced
by, any other Person, except as otherwise set forth in Section 4.5.

         5.8 Governing Law. All questions concerning the construction, validity,
enforcement and interpretation of this Agreement shall be governed by and
construed and enforced in accordance with the internal laws of the State of New
York, without regard to the principles of

                                      -16-

<PAGE>

conflicts of law thereof. Each party agrees that all Proceedings shall be
commenced exclusively in the state and federal courts sitting in the City of New
York, Borough of Manhattan (the "New York Courts"). Each party hereto hereby
irrevocably submits to the exclusive jurisdiction of the New York Courts for any
proceeding, and hereby irrevocably waives, and agrees not to assert in any
Proceeding, any claim that it is not personally subject to the jurisdiction of
any New York Court or that a New York Court is an inconvenient forum for such
Proceeding. Each party hereto hereby irrevocably waives personal service of
process and consents to process being served in any such Proceeding by mailing a
copy thereof via registered or certified mail or overnight delivery (with
evidence of delivery) to such party at the address in effect for notices to it
under this Agreement and agrees that such service shall constitute good and
sufficient service of process and notice thereof. Nothing contained herein shall
be deemed to limit in any way any right to serve process in any manner permitted
by law. Each party hereto hereby irrevocably waives, to the fullest extent
permitted by applicable law, any and all right to trial by jury in any legal
Proceeding. The prevailing party in a Proceeding shall be reimbursed by the
other party for its attorney's fees and other costs and expenses incurred with
the investigation, preparation and prosecution of such Proceeding.

         5.9  Survival. The representations, warranties, agreements and
covenants contained herein shall survive the Closing and the delivery and
conversion of the Securities, as applicable.

         5.10 Execution. This Agreement may be executed in two or more
counterparts, all of which when taken together shall be considered one and the
same agreement and shall become effective when counterparts have been signed by
each party and delivered to the other party, it being understood that both
parties need not sign the same counterpart. In the event that any signature is
delivered by facsimile transmission, such signature shall create a valid and
binding obligation of the party executing (or on whose behalf such signature is
executed) with the same force and effect as if such facsimile signature page
were an original thereof.

         5.11 Severability. If any provision of this Agreement is held to be
invalid or unenforceable in any respect, the validity and enforceability of the
remaining terms and provisions of this Agreement shall not in any way be
affected or impaired thereby and the parties will attempt to agree upon a valid
and enforceable provision that is a reasonable substitute therefor, and upon so
agreeing, shall incorporate such substitute provision in this Agreement.

         5.12 Rescission and Withdrawal Right. Notwithstanding anything to the
contrary contained in (and without limiting any similar provisions of) the
Transaction Documents, whenever any Purchaser exercises a right, election,
demand or option under a Transaction Document and the Company does not timely
perform its related obligations within the periods therein provided, then such
Purchaser may rescind or withdraw, in its sole discretion from time to time upon
written notice to the Company, any relevant notice, demand or election in whole
or in part without prejudice to its future actions and rights.

         5.13 Replacement of Securities. If any certificate or instrument
evidencing any Securities is mutilated, lost, stolen or destroyed, the Company
shall issue or cause to be issued in exchange and substitution for and upon
cancellation thereof, or in lieu of and substitution therefor, a new certificate
or instrument, but only upon receipt of evidence reasonably

                                      -17-

<PAGE>

satisfactory to the Company of such loss, theft or destruction and customary and
reasonable indemnity, if requested. The applicants for a new certificate or
instrument under such circumstances shall also pay any reasonable third-party
costs associated with the issuance of such replacement Securities.

         5.14 Remedies. In addition to being entitled to exercise all rights
provided herein or granted by law, including recovery of damages, each of the
Purchasers and the Company will be entitled to specific performance under the
Transaction Documents. The parties agree that monetary damages may not be
adequate compensation for any loss incurred by reason of any breach of
obligations described in the foregoing sentence and hereby agrees to waive in
any action for specific performance of any such obligation the defense that a
remedy at law would be adequate.

         5.15 Payment Set Aside. To the extent that the Company makes a payment
or payments to any Purchaser pursuant to any Transaction Document or a Purchaser
enforces or exercises its rights thereunder, and such payment or payments or the
proceeds of such enforcement or exercise or any part thereof are subsequently
invalidated, declared to be fraudulent or preferential, set aside, recovered
from, disgorged by or are required to be refunded, repaid or otherwise restored
to the Company, a trustee, receiver or any other person under any law
(including, without limitation, any bankruptcy law, state or federal law, common
law or equitable cause of action), then to the extent of any such restoration
the obligation or part thereof originally intended to be satisfied shall be
revived and continued in full force and effect as if such payment had not been
made or such enforcement or setoff had not occurred.

                   [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK
                             SIGNATURE PAGES FOLLOW]

                                      -18-

<PAGE>


     IN WITNESS WHEREOF, the parties hereto have caused this Securities Purchase
Agreement to be duly executed by their respective authorized signatories as of
the date first indicated above.

                                 MERIX CORPORATION

                                 By:       /s/ Mark R. Hollinger
                                           -------------------------------------
                                 Name:     Mark R. Hollinger
                                 Title:    Chairman, Chief Executive Officer and
                                 President

                   [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK
                      SIGNATURE PAGE FOR PURCHASER FOLLOWS]

                                      -19-

<PAGE>




                            SF CAPITAL PARTNERS LTD

                            By:       /s/ Brian H. Davidson
                                     -------------------------------------------
                            Name:    Brian H. Davidson
                            Title:   Authorized Signatory

                            Investment Amount:                      $25,000,0000

                            Jurisdiction of organization: British Virgin Islands

                            Address for Notice:

                            1500 West Market Street, Suite 200
                            Mequon, WI 53092
                            Facsimile No.: (262) 241 1888
                            Attn: Brian H. Davidson

                            With a copy to:
                            Robinson Silverman Pearce Aronsohn &
                            Berman LLP
                            1290 Avenue of the Americas
                            New York, NY  10104
                            Facsimile No.: (212) 541-4630 and (212) 541-1432
                            Attn: Eric L. Cohen, Esq.

                                      -20-

<PAGE>


                              DISCLOSURE SCHEDULES

Notwithstanding references in this Schedule of Exceptions to specific Sections
of the Securities Purchase Agreement dated as of May 30, 2002 (the "Purchase
Agreement") between Merix Corporation (the "Company") and the Investors party
thereto, the disclosure of any exception set forth herein shall be deemed an
exception to all representations and warranties of the Company in the Purchase
Agreement. Unless otherwise defined herein, capitalized terms used herein have
the meanings ascribed thereto in the Purchase Agreement.

Schedule 3.1(g)   Capitalization
1. As of May 25, 2002, the Company has outstanding 14,410,860 shares of Common
Stock.
2. As of May 25, 2002, the Company has outstanding options to purchase 2,172,622
shares of Common Stock.
3. The Company's outstanding shares of Common Stock have certain dividend rights
attached to them in connection with a Shareholder Rights Agreement dated March
25, 1997.

Schedule 3.1(l)   Compliance
The Company has outstanding 7.92% Senior Notes due September 15, 2003 (the
"Notes") held by certain insurance companies. The Notes contain certain
financial covenants, including minimum net worth, debt to capitalization ratio
and interest coverage ratio and also contain cross-default provisions. As of
February 23, 2002, the Company was not in compliance with the covenant that
specifies a minimum interest coverage ratio. Compliance with this covenant was
waived by the holders of the Notes as of and for the quarter ended February 23,
2002. As of May 25, 2002, the Company was not in compliance with the same
covenant. The Company will use a portion of the proceeds from the sale of the
Debentures to pay off all amounts owed under the Notes.

Schedule 3.1(p)   Insurance
Because of prevailing market forces in the insurance industry, the Company
expects a significant increase in the costs of its insurance upon the renewal of
such insurance. The increase from its current insurance costs, however, is
expected to be comparable to average cost increases for similarly situated
companies.

Schedule 3.1(t)   Certain Fees
The Company will owe a fee to Thomas Weisel Partners which has acted as the
Company's placement agent in connection with the sale of the Debentures.

Schedule 3.1(u)   Certain Registration Matters
Tektronix, Inc. ("Tektronix") was granted certain registration rights pursuant
to a Registration Rights Agreement dated as of June 1, 1994, entered into by
Tektronix and the Company.

Schedule 3.1(z)   Disclosure
The fact that the Company is entering into the Purchase Agreement and will issue
Debentures pursuant thereto may constitute material, non-public information.

                                      -21-