OP27S_DIE Datasheet, PDF (5/6 Pages) Analog Devices – This specification documents

5.1 HTRB is not applicable for this drawing.
5.2 Burn-in is per MIL-STD-883 Method 1015 test condition B or C.
5.3 Steady state life test is per MIL-STD-883 Method 1005.