                           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
                                        ----------------------

            Print Name:    MARIO M. ROSATI
                                        ----------------------

ROSATI MARIO M 4