STOCK UNITAWARD AGREEMENTParticipant: Award Number: Plan: 2004 Long-Term Incentive Compensation Plan Award Type: Stock Unit Grant Date: Number Units: Purchase Price: $0.00 Restriction Period: Grant Date through

Grant of Stock Units. Subject to the terms of the Plan and this Agreement, the Company hereby grants you the Stock Units as set forth on the first page of this Agreement. Each Stock Unit represents the right to receive one Share on the date the Stock Unit vests, if it vests (subject to adjustment for a change in capitalization within the meaning of Section 4.3 of the Plan). Prior to vesting, such Stock Units represent an unsecured obligation of the Company, payable (if at all) from the general assets of the Company.

Vesting and Expiration. The Stock Units will vest, if at all, as set forth on the first page of this Agreement if the Objective has been achieved, unless otherwise provided in this Agreement or the Plan. Upon expiration of the Restriction Period set forth on the first page of this Agreement, all Stock Units that are not then vested because the Objective was not achieved will be forfeited and have no further effect.

Forfeiture of Stock Units upon Termination of Service. Upon any Termination of Service, all Stock Units that are not then vested will be forfeited and have no further effect.

Forfeiture of Stock Units for Awards Not Timely Accepted. This Award is conditioned upon and subject to your accepting the Award by signing and delivering to the Company this Agreement no later than the first date the Stock Units vest pursuant to the Award. If you fail to accept the Award within the time described above, all Stock Units will be forfeited and have no further effect.

Settlement of Stock Units. Subject to the terms of the Plan and this Agreement, any Stock Units that vest and become non-forfeitable upon determination that the Objective has been achieved shall be released and settled during the 90 day period following the end of the Company's fiscal quarter in which such determination was made (which payment date is intended to comply with the “short-term” deferral exemption from the application of Section 409A of the Code). Upon settlement, the Company shall deliver to you (or, in the event of your death following the date of vest, to your estate or, if the Committee establishes a beneficiary designation procedure pursuant to Section 11 of the Plan, to any beneficiary that you have designated pursuant to such procedure) one or more certificates for the vested Shares or, in the Company's discretion, may cause the vested Shares to be deposited in an account maintained by a broker designated by the Company.

(a)

For purposes of this Agreement, “Tax-Related Items” means any or all income tax, social insurance tax, payroll tax, payment on account or other tax-related items that may be applicable to this Award by law or regulation of any governmental authority, whether federal, state or local, domestic or foreign. Regardless of any action the Company takes with respect to withholding Tax-Related Items, you acknowledge that you are ultimately responsible for all Tax-Related Items and that such Tax-Related Items may exceed the amount actually withheld by the Company or the Employer. You further acknowledge that the Company and/or the Employer (1) make no representations or undertakings regarding the treatment of any Tax-Related Items in connection with any aspect of the Stock Units, including, without limitation, the grant, vesting or release of the Stock Units, the subsequent sale of Shares and the receipt of any dividends or dividend equivalents pursuant to Shares; and (2) do not commit to and are under no obligation to structure the terms of the grant or any aspect of the Stock Units to reduce or eliminate your liability for Tax-Related Items or to achieve any particular tax result. Furthermore, if you have become subject to tax in more than one jurisdiction between the Grant Date and the date of any relevant taxable event, you acknowledge that the Company and/or the Employer (or former Employer, as applicable) may be required to withhold or account for Tax-Related Items in more than one jurisdiction.

(b)

Prior to any relevant taxable or tax withholding event, as applicable, you will pay or make adequate arrangements satisfactory to the Company and/or the Employer to satisfy all Tax-Related Items. In this regard, you authorize the Company and/or the Employer, or their respective agents, at their discretion, to satisfy the obligations with regard to all Tax-Related Items by one or a combination of the following: (1) withholding from your wages or other cash compensation paid to you by the Company and/or the Employer; or (2) selling or arranging for the sale of Shares that you acquire under the Plan; or (3) withholding of Shares consistent with the “Share Withholding” provisions under Section 13.2 of the Plan.

(c)

Depending upon the withholding method, the Company or the Employer may withhold or account for Tax-Related Items by considering applicable minimum or maximum statutory withholding amounts or other

(d)

You shall pay to the Company or the Employer any amount of Tax-Related Items that the Company or the Employer may be required to withhold or account for as a result of your participation in the Plan that cannot be satisfied by the means previously described. The Company may refuse to release and settle the Stock Units if you fail to comply with your obligations in connection with the Tax-Related Items.

Transfer of Stock Units. The Stock Units and any rights under this Agreement may not be assigned, pledged as collateral or otherwise transferred, except as permitted by the Plan, nor may the Stock Units or such rights be subject to attachment, execution or other judicial process. In the event of any attempt to assign, pledge or otherwise dispose of the Stock Units or any rights under this Agreement, except as permitted by the Plan, or in the event of the levy of any attachment, execution or similar judicial process upon the rights or interests with respect to the Stock Units, the Committee may in its discretion, upon notice to you, cause you to forfeit such Stock Units.

(a)

You will have no rights as a shareholder with respect to any Shares issuable under the Stock Units until such Shares have been duly issued by the Company or its transfer agent pursuant to the vesting and settlement of the Award.

(b)

In the event of a change in capitalization within the meaning of Section 4.3 of the Plan, the number and class of Shares or other securities that you are entitled to pursuant to this Agreement shall be appropriately adjusted or changed as determined by the Committee to reflect the change in capitalization, provided that any such additional Shares or additional or different shares of securities shall remain subject to the restrictions in this Agreement.

(a)

Unless otherwise provided in this Agreement or the Plan, for purposes of this Agreement “Termination of Service” means the discontinuance of your relationship with the Company as an employee of the Company or the Employer or any subsidiary or affiliate of the Company under the Plan. Except as determined otherwise by the Committee, you will not be deemed to have incurred a Termination of Service if you transfer employment among the various subsidiaries or affiliates of the Company constituting the Employer, so long as there is no interruption in your provision of services to the Company or other Employer as an employee. The Committee, in its discretion, will determine whether you have incurred a Termination of Service. You will not be deemed to have incurred a Termination of Service during a period for which you are on military leave, sick leave, or other leave of absence approved by the Employer.

(b)

If you are deemed to have incurred a Termination of Service, your right to vest in the Stock Units under this Agreement or the Plan, if any, will terminate effective as of the date that you are no longer actively providing services to the Company or one of its subsidiaries or affiliates (regardless of the reason for the termination and whether or not later found to be invalid or in breach of employment laws in the jurisdiction where you are employed or the terms of your employment agreement, if any), and will not be extended by any notice period mandated under local law (e.g., active employment would not include a period of “garden leave” or similar period mandated under the employment laws in the jurisdiction where you are employed or the terms of your employment agreement, if any); the Committee, in its discretion, will determine when you are no longer actively providing services for purposes of this Award (including whether you may still be considered to be providing services while on a leave of absence).

Provisions of the Plan. The provisions of the Plan are incorporated by reference in this Agreement as if set out in full in this Agreement. To the extent that any conflict may exist between any other provision of this Agreement and a provision of the Plan, the Plan provision will control. All decisions of the Committee with respect to the interpretation, construction and application of the Plan or this Agreement shall be final, conclusive and binding upon you and the Company.

Detrimental Activity. The Committee in its sole discretion may cancel and cause to be forfeited any Stock Units not previously vested or released under this Agreement if you engage in any "Detrimental Activity” (as defined below). In addition, if you engage in any Detrimental Activity prior to or within one (1) year after your Termination of Service, the Committee in its sole discretion may require you to pay to the Company the amount of all gain you realized from any vesting of the Stock Units beginning six (6) months prior to your Termination of Service, provided that the Committee gives you notice of such requirement within one (1) year after your Termination of Service. In that event, the Company will be entitled to setoff such amount against any amount the Company owes to you, in addition to any other rights the Company may have. For purposes of this section:

(1)

the performance of services for any Competing Business (as defined below), whether as an employee, officer, director, consultant, agent, contractor or in any other capacity, except to the extent expressly permitted by any written agreement between you and the Company;

(2)

the unauthorized disclosure or use of any trade secrets or other confidential information of the Company;

(3)

any attempt to induce an employee to leave employment with the Company to perform services elsewhere, or any attempt to cause a customer or supplier of the Company to curtail or cancel its business with the Company;

(4)

breach of any confidentiality, noncompetition, nonsolicitation or nondisparagement obligations, or any obligations relating to the disclosure, assignment or protection of inventions, undertaken by you in any written agreement between you and the Company; or

(5)

any act of fraud, misappropriation, embezzlement, or tortious or criminal behavior that adversely impacts the Company.

(c)

“Competing Business” means any corporation, partnership, university, government agency or other entity or person (other than the Company) that is conducting research directed to, developing, manufacturing, marketing, distributing, or selling any product, service, or technology that is competitive with any part of the Company's Business (as defined below). "Company's Business" means the development, manufacture, marketing, distribution, or sale of, or the conduct of research directed to, any product, service, or technology that the Company is developing, manufacturing, marketing, distributing, selling, or conducting research directed to, at any time during your employment or other relationship with the Company, except that following your Termination of Service the Company's Business will be determined as of the time of such termination. As of the effective date of this Agreement, the Company's Business includes but is not limited to the conduct of research directed to, development, manufacture, marketing, distribution, and/or sale of the following products, services, and technologies: (1) silicon carbide (SiC) materials for electronic applications; (2) SiC materials for gemstone applications; (3) A^III nitride materials for electronic applications; (4) light-emitting diode (LED) devices and components; (5) power semiconductor devices made using SiC and/or A^III nitride materials and components incorporating such devices; (6) radio frequency (RF) and microwave devices made using SiC and/or A^III nitride materials and components and modules incorporating such devices; (7) LED backlights for liquid crystal displays (LCDs); (8) lighting products, modules, fixtures or devices incorporating any of the above materials or technology; and (9) other semiconductor devices made using SiC and/or A^III nitride materials and components incorporating such devices. You acknowledge that during your employment or other relationship with the Company the Company's Business may expand or change and you agree that any such expansions and changes shall expand or contract the definition of the Company's Business accordingly.

Language. If you have received this Agreement or any other document related to the Plan translated into a language other than English and if the translated version differs in meaning from the English version, the English version will control.

Electronic Delivery. The Company may, in its sole discretion, deliver any documents related to current or future participation in the Plan by electronic means. You hereby consent to receive such documents by electronic delivery and agree to participate in the Plan through an on-line or electronic system established and maintained by the Company or another third party designated by the Company. Signed documents delivered to either party via facsimile or in portable document format will have the same effect as an original, unless otherwise required by applicable law.

(a)

Nothing in this Agreement will be construed as: (1) constituting a commitment, agreement or understanding of any kind that the Company or any other Employer will continue your employment or other relationship with the Company; or (2) limiting or restricting either party's right to terminate your employment or other relationship.

(b)

This Agreement shall be binding upon and inure to the benefit of the parties and their respective successors and permitted assigns. You may not assign any rights under this Agreement without the written consent of the Company, which it may withhold in its sole discretion; any such attempted assignment without the Company's written consent shall be void. The Company may assign its rights under this Agreement at any time upon notice to you.

(c)

Notices under this Agreement must be in writing and delivered either by hand or by a reputable domestic or international carrier (postage prepaid and return receipt or proof of delivery requested), and, in the case of notices to the Company, addressed to its principal executive offices to the attention of the Stock Plan Administrator, and, in your case, addressed to your address as shown on the Employer's records.

(d)

This Agreement shall be governed by and construed in accordance with the laws of the State of North Carolina without regard to the conflict of law provisions thereof, as if made and to be performed wholly within such State. For purposes of litigating any dispute that arises directly or indirectly from the relationship

(e)

If any provision of this Agreement is held to be invalid or unenforceable, such determination shall not affect the other provisions of the Agreement and the Agreement shall be construed as if the invalid or unenforceable provision were omitted and a valid and enforceable provision, as nearly comparable as possible, substituted in its place.

(f)

Notwithstanding any prior award agreement between you and the Company under which Stock Units may have been awarded, this Agreement and the Plan set forth all of the promises, agreements and understandings between you and Company relating to the Stock Units granted pursuant to this Agreement, constitutes the complete agreement between the parties regarding the Stock Units and replaces any prior oral or written communications regarding the same.

(g)

Shares issued pursuant to this Award may be subject to such stop transfer orders and other restrictions as the Committee may deem advisable under applicable law or the rules and regulations of the U.S. Securities and Exchange Commission or any stock exchange or trading system upon which the common stock of the Company is listed, and the Committee may cause a legend or legends to be placed on any such certificates or the stock records of the Company to make appropriate reference to such restrictions.

(h)

You agree that the Stock Units, even if later forfeited, serve as additional, valuable consideration for your obligations, if any, undertaken in any existing agreement between you and the Company and/or other Employer regarding confidential information, noncompetition, nonsolicitation or similar covenants.

(i)

You acknowledge, represent and warrant to the Company, and agree with the Company, that (i) except for information provided in the Company's filings with the U.S. Securities and Exchange Commission and in the Company's current prospectus relating to the Plan, you have not relied and will not rely upon the Committee, the Company, an Employer or any employee or agent of the Company or an Employer in determining whether to accept this Award, or in connection with any disposition of Shares obtained pursuant to this Award, or with respect to any tax consequences related to the grant of the Stock Units or the disposition of Shares obtained pursuant to the Stock Units; and (ii) you will seek from your own professional advisors such investment, tax and other advice as you believe necessary.

(j)

You acknowledge that you may incur a substantial tax liability as a result of vesting of the Stock Units. You assume full responsibility for all such consequences and the filing of all tax returns and related elections you may be required or find desirable to file. If you are required to make any valuation of Shares obtained pursuant to the Stock Units under any federal, state or other applicable tax law, and if the valuation affects any tax return or election of the Company or the Employer or affects the Company's financial statement reporting, you agree that the Company may determine the value and that you will observe any determination so made by the Company in all tax returns and elections filed by you.

(k)

You acknowledge that copies of the Plan and Plan prospectus are available upon written or telephonic request to the Company's Stock Plan Administrator.

Severability. The provisions of this Agreement are severable and if any one or more provisions is determined to be illegal or otherwise unenforceable, in whole or in part, the remaining provisions shall nevertheless be binding and enforceable.

(a)

the Plan is established voluntarily by the Company, is discretionary in nature and may be modified, amended, suspended or terminated by the Company at any time, unless expressly provided otherwise in the Plan or the Agreement;

(b)

the grant of the Stock Units is voluntary and does not create any contractual or other right to receive future grants of Stock Units, or benefits in lieu of Stock Units, even if Stock Units have been granted repeatedly in the past;

(c)

all decisions with respect to future grants of Stock Units, if any, will be at the sole discretion of the Company;

(d)

your participation in the Plan is voluntary;

(e)

your participation in the Plan will not create a right to employment with the Company or the Employer and will not interfere with the ability of the Company, the Employer or any subsidiary or affiliate to terminate your employment or service relationship at any time;

(f)

if you are employed by a non-U.S. entity and provide services outside the U.S., the Stock Units are an extraordinary item that does not constitute compensation of any kind for services of any kind rendered to your Employer, and they are outside the scope of your employment or service contract, if any, with your Employer;

(g)

the grant of the Stock Units is not intended to replace any pension rights or compensation;

(h)

the grant of the Stock Units is not part of normal or expected compensation or salary for any purposes, including, but not limited to, calculating any severance, resignation, termination, redundancy, dismissal, end-of-service payments, bonuses, long-service awards, pension or retirement or welfare benefits or similar payments;

(i)

the grant of Stock Units and your participation in the Plan will not be interpreted to form an employment or service contract or relationship with the Company, the Employer or any subsidiary or affiliate of the Company;

(j)

the future value of the Shares is unknown and cannot be predicted with certainty;

(k)

no claim or entitlement to compensation or damages shall arise from forfeiture of the Stock Units resulting from termination of your employment or service relationship by the Company or the Employer (for any reason whatsoever and whether or not later found to be invalid or in breach of employment laws in the jurisdiction where you are employed or the terms of your employment agreement, if any), and, in consideration of the grant of the Stock Units, to which you otherwise are not entitled, you irrevocably agree (i) never to institute any such claim against the Company, the Employer, or any subsidiary or affiliate of the Company, (ii) to waive your ability, if any, to bring any such claim, and (iii) to release the Company and the Employer and any subsidiary or affiliate from any such claim; if, notwithstanding the foregoing, any such claim is allowed by a court of competent jurisdiction, then, by participating in the Plan, you shall be deemed irrevocably to have agreed not to pursue such claim and agree to execute any and all documents necessary to request dismissal or withdrawal of such claims;

(l)

the grant of the Stock Units and the benefits under the Plan, if any, will not automatically transfer to another company in the case of a merger, takeover, or transfer of liability;

(m)

neither the Company, the Employer nor any subsidiary or affiliate of the Company shall be liable for any foreign exchange rate fluctuation between your local currency and the United States Dollar that may affect the value of the Stock Units or of any payments due to you pursuant to the subsequent sale of any Shares acquired upon the vesting of the Stock Units; and

(n)

this award and any other award(s) granted under the Plan on the Grant Date are intended to fulfill any and all agreements, obligations or promises, whether legally binding or not, previously made by the Company or another Employer under the Plan to grant you the Stock Units or other rights to common stock of the Company. By signing this Agreement, you accept such awards, along with all prior awards received by you, in full satisfaction of any such agreement, obligation or promise.

No Advice Regarding Grant. The Company is not providing any tax, legal, or financial advice, nor is the Company making any recommendations regarding your participation in the Plan or sale of Shares. You are hereby advised to consult with your own personal tax, legal and financial advisors regarding your participation in the Plan before taking any action related to the Plan.

Compliance with Law. Notwithstanding any other provision of the Plan or this Agreement, unless there is an available

Waiver. You acknowledge that a waiver by the Company of breach of any provision of this Agreement shall not operate or be construed as a waiver of any other provision of this Agreement, or of any subsequent breach by you or any other participant.

Appendix. Notwithstanding any provisions in this Agreement, this Award shall be subject to any special terms and conditions set forth in any Appendix to this Agreement for your country to the extent that the Company determines that the application of such terms and conditions is necessary or advisable in order to comply with local law or to facilitate the administration of the Plan. Moreover, if you relocate to or from one of the countries included on any such Appendix, the special terms and conditions for the country you are moving from and/or the country you are moving to will apply to you to the extent that the Company determines that the application of such terms and conditions is necessary or advisable in order to comply with local law or to facilitate the administration of the Plan. If included, the Appendix is incorporated in and constitutes part of this Agreement.

Imposition of Other Requirements. The Company reserves the right to impose other requirements on your participation in the Plan, on the Stock Units and on any Shares acquired under the Plan, to the extent that the Company determines it is necessary or advisable in order to comply with local law or to facilitate the administration of the Plan, and to require you to sign any additional agreements or undertakings that may be necessary to accomplish the foregoing.

Code Section 409A. The Award is intended to qualify for the “short-term deferral” exemption from Section 409A of the Code, and the provisions of this Agreement will be interpreted, operated and administered in a manner consistent with these intentions. The Company reserves the right, to the extent the Company deems necessary or advisable in its sole discretion, without your consent, to unilaterally amend or modify the Plan and/or this Agreement to ensure that the Stock Units qualify for exemption from or comply with Section 409A of the Code; provided, however, that the Company makes no representations that the Stock Units will be exempt from Section 409A of the Code and makes no undertaking to preclude Section 409A of the Code from applying to these Stock Units. The Company will have no liability to you or to any other party if the Award, the vesting of the Award, delivery of Shares upon settlement of the Award or any other event hereunder that is intended to be exempt from or compliant with Section 409A of the Code, is not so exempt or compliant, or for any action taken by the Company with respect thereto.