POWER OF ATTORNEY

The undersigned, as a Section 16 reporting person of Aehr

Test Systems (the "Company"), hereby constitutes and appoints

Gayn Erickson, Kenneth B. Spink and Vernon Rogers, and each of them,

the undersigned's true and lawful attorney-in-fact to:

1. complete and execute Forms 3, 4 and 5 and other forms

and all amendments thereto as such attorney-in-fact

shall in his or her discretion determine to be required

or advisable pursuant to Section 16 of the Securities

and Exchange Act of 1934 (as amended) and the rules and

regulations promulgated thereunder, or any successor

laws and regulations, as a consequence of the

undersigned's ownership, acquisition or disposition of

securities of the Company; and

2. do all acts necessary in order to file such forms with

the Securities and Exchange Commission, any securities

exchange or national association, the Company and such

other person or agency as the attorney-in-fact shall

deem appropriate.

The undersigned hereby ratifies and confirms all that said

attorney-in-fact and agents shall do or cause to be done by virtue

hereof. The undersigned acknowledges that the foregoing

attorney-in-fact, in serving in such capacity at the request of the

undersigned, are not assuming, nor is the Company assuming, any of

the undersigned's responsibilities to comply with Section 16 of the

Securities Exchange Act of 1934 (as amended).

This Power of Attorney shall remain in full force and effect

until the undersigned is no longer required to file Forms 3, 4 and

5 with respect to the undersigned's holdings and transactions in

securities issued by the Company, unless earlier revoked by the

undersigned in a signed writing delivered to the Company and the

foregoing attorneys-in-fact.

IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney

to be executed as of this 3rd day of September, 2020.

Signature:

/s/ MARIO M. ROSATI

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Print Name:

MARIO M. ROSATI

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ROSATI MARIO M 4