MIL-PRF-28750/8C, PERFORMANCE SPECIFICATION SHEET, RELAY, SOLID-STATE, HERMETICALLY SEALED, CLASS II, OPTICALLY ISOLATED, 600mA, 50 V dc, SIGNAL SWITCHING, SPST(N.O,) (1 FEB 1999)., This specification is approved for use by all Departments and Agencies of the Department of Defense. The requirements for acquiring the relay described herein shall consist of this specification and MIL-PRF-28750.