Exhibit 10(zzz)

INTERNATIONAL RECTIFIER CORPORATION  2000 INCENTIVE PLAN  RESTRICTED STOCK UNIT AWARD AGREEMENT

Participant Name:Number of Stock Units:

(1)Vesting Schedule:

One-third of the Stock Units subject to the Award will vest on each of the first three anniversary dates of Award Date(1)Award Date:


---

THIS AGREEMENTis amongINTERNATIONAL RECTIFIER CORPORATION,a Delaware corporation (the
"Corporation"), and the employee named above (the "Participant"), an employee of the Corporation or one of its subsidiaries, and is delivered under the International Rectifier Corporation 2000
Incentive Plan (Amended and Restated as of November 22, 2004) (the "Plan").

W I T N E S S E T H

WHEREAS,the Compensation and Stock Option Committee of the Board of Directors has
approved, and the Corporation has granted, effective as of the Award Date, to the Participant with reference to services rendered to the Company, a restricted stock unit award under the Plan (the
"Stock Unit Award" or "Award"), upon the terms and conditions set forth herein and in the Plan.

NOW THEREFORE,in consideration of services rendered by the Participant and the mutual promises made herein and the mutual benefits to be
derived therefrom, the parties agree as follows:

1.Defined Terms.Capitalized terms used herein and not
otherwise defined herein shall have the meaning assigned to such terms in the Plan. For purposes of this Agreement, a "Stock Unit" means a
non-voting unit of measurement which is deemed for bookkeeping purposes to be equivalent to one outstanding share of Common Stock of the Corporation.

2.Grant.Subject to the terms of this Agreement and the Plan,
the Corporation grants to the Participant a Stock Unit Award with respect to an aggregate number of Stock Units set forth above. The Corporation acknowledges that the consideration for the shares
payable with respect to the Stock Units on the terms set forth in this Agreement shall be the services rendered to the Company by the Participant prior to the applicable vesting date, the fair value
of which is not less than the par value per share of the Corporation's Common Stock.

3.Vesting.The Stock Units subject to the Award shall vest in
installments as set forth in the "Vesting Schedule" set forth above, subject to earlier termination or acceleration and subject to adjustment as provided herein.

4.Continuance of Employment Required.Except as otherwise
provided herein, the vesting schedule applicable to the Stock Units requires continued service through each applicable vesting date as a condition to the vesting of the applicable installment of the
award and the rights and benefits under this Agreement. Service for only a portion of the vesting period, even if a substantial portion,

1

---



will
not entitle the Participant to any proportionate vesting or avoid or mitigate a termination of rights and benefits upon or following a termination of employment or service.

5.Dividend and Voting Rights.



6.Restrictions on Transfer.Prior to the time the Stock Units
are vested and paid, neither the Stock Units comprising the Award nor any other rights of the Participant under this Agreement or the Plan may be transferred, except as expressly provided in
Section 1.9 of the Plan. No specific exception to the general transfer prohibitions set forth in Section 1.9 of the Plan has been authorized by the Committee.

7.Timing and Manner of Payment with Respect to Stock
Units.Stock Units subject to this Agreement will be paid in an equivalent number of shares of Common Stock promptly after the vesting of such Stock Units in
accordance with the terms hereof, subject to adjustment as contemplated by Section 9 and subject to earlier payment pursuant to Section 10. The Participant or other person entitled under
the Plan to receive the shares shall deliver to the Corporation any representations or other documents or assurances required pursuant to Section 5.4 of the Plan.

8.Effect of Termination of Employment or Change in Control.



2

---





9.Adjustments in Case of Changes in Common Stock.The Committee
may adjust the number of Stock Units subject to this Agreement as provided under Section 5.2 of the Plan. Upon the occurrence of an Event (as defined below), the Committee shall make
adjustments as it deems appropriate in the number and kind of securities or other consideration that may become payable with respect to the Award. If any adjustment shall be made under
Section 5.2 of the Plan or an Event shall occur and the Stock Unit Award has not been fully vested and paid upon such Event or prior thereto, the Stock Unit Award may become payable in
securities or other consideration (the "Restricted Property") rather than in the Common Stock otherwise payable in respect of the Stock Unit Award. Such Restricted Property shall become payable at the
times and in such proportions set forth in Section 7 above or such earlier time as the Committee may authorize pursuant to Section 10 below. Notwithstanding the foregoing, to the extent
that the Restricted Property includes any cash, the commitment hereunder shall become an unsecured promise to pay an amount equal to such cash (with earnings attributable thereto as if such amount had
been invested, pursuant to policies established by the Committee, in interest bearing, FDIC insured (subject to applicable insurance limits) deposits of a depository institution selected by the
Committee) at such times and in such proportions as the Stock Unit Award becomes payable in accordance with Section 7 above. Notwithstanding the foregoing, the Stock Unit Award and any

3

---



Common
Stock or other securities or property payable in respect of the Stock Unit Award shall continue to be subject to proportionate and equitable adjustments (if any) under Section 5.2 of the
Plan consistent with the effect of such events on stockholders generally, as the Committee determines to be necessary or appropriate, and in the number, kind and/or character of shares of Common Stock
or other securities, property and/or rights payable in respect of Stock Units granted under the Plan. All rights of the Participant hereunder are subject to those adjustments. For purposes of this
Agreement, "Event" means a liquidation, dissolution, Change in Control, merger, consolidation, or other combination or reorganization, or a recapitalization, reclassification, extraordinary dividend
or other distribution (including a split up or a spin off of the Corporation or any significant Subsidiary), or a sale or other distribution of substantially all the assets of the Corporation as an
entirety.

10.Possible Early Settlement of Award.The Committee retains
the right to accelerate the vesting and payment date of the outstanding and previously unvested Stock Units subject to the Award in connection with an Event, a Change in Control, or the termination of
the Participant's employment with the Corporation or one of its Subsidiaries. This Section 10 is not intended to prevent vesting of the Award pursuant to Section 8(c) above or an
adjustment to the Award as provided in the Plan or Section 9 above.

11.Tax Withholding.Upon payment of Dividend Equivalents and/or
the distribution of shares of Common Stock in respect of the Stock Units, the entity within the Company last employing the Participant shall have the right at its option to (a) require the
Participant (or the Participant's beneficiary, as the case may be) to pay or provide for payment in cash of the amount of any taxes which the Company may be required to withhold with respect to such
payment or distribution or (b) deduct from any amount payable to the Participant the amount of any taxes which the Company may be required to withhold with respect to such payment or
distribution. In any case where a tax is required to be withheld in connection with the delivery of shares of Common Stock under this Agreement, the Committee may, but is not required to, reduce the
number of shares to be delivered by (or otherwise reacquire) the appropriate number of shares valued at their then Fair Market Value, to satisfy such withholding obligation.

12.Notices.Any notice to be given under the terms of this
Agreement shall be in writing and addressed to the Corporation at its principal office located at 233 Kansas Street, El Segundo, California 90245, to the attention of the Assistant Secretary and to
the Participant at the address given beneath the Participant's signature hereto, or at such other address as either party may hereafter designate in writing to the other.

13.Plan and Program.The Award and all rights of the
Participant with respect thereto are subject to, and the Participant agrees to be bound by, all of the terms and conditions of the provisions of the Plan, incorporated herein by reference, to the
extent such provisions are applicable to Awards granted to employees. The Participant acknowledges receipt of a copy of the Plan, which is made a part hereof by this reference, and agrees to be bound
by the terms thereof. Unless otherwise expressly provided in other Sections of this Agreement, provisions of the Plan that confer discretionary authority on the Committee do not (and shall not be
deemed to) create any rights in the Participant unless such rights are expressly set forth herein or are otherwise in the sole discretion of the Committee so conferred by appropriate action of the
Committee under the Plan after the date hereof. If there is any conflict or inconsistency between the terms and conditions of this Agreement and of the Plan, the terms and conditions of the Plan shall
govern.

14.No Service Commitment by Company.Nothing contained in this
Agreement or the Plan constitutes an employment commitment by the Corporation or any of its Subsidiaries, affects the Participant's status as an employee at-will who is subject to
termination without cause, confers upon the Participant any right to remain employed by the Corporation or any Subsidiary, interferes in any way with the right of the Corporation or any Subsidiary at
any time to terminate such employment, or affects the right of the Corporation or any Subsidiary to increase or decrease the Participant's other compensation.

4

---



15.Limitation on Participant's Rights.Participation in the
Plan confers no rights or interests other than as herein provided. This Agreement creates only a contractual obligation on the part of the Corporation as to amounts payable and shall not be construed
as creating a trust. The Plan, in and of itself, has no assets. The Participant shall have only the rights of a general unsecured creditor of the Corporation (or applicable Subsidiary) with respect to
amounts credited and benefits payable, if any, with respect to the Stock Units, and rights no greater than the right to receive the Common Stock (subject to adjustments) as a general unsecured
creditor with respect to Stock Units, as and when payable hereunder.

IN WITNESS WHEREOF, the parties have executed this Agreement as of the date first above written. By the Participant's execution of this
Agreement, the Participant agrees to the terms and conditions hereof and of the Plan.

INTERNATIONAL RECTIFIER
CORPORATION,a Delaware corporation

PARTICIPANTBy:



SignaturePrint Name:



AddressIts:



(City, State, Zip Code)


5

---



QuickLinks