scope:

This drawing describes device requirements for class B microcircuits in accordance with 1.2.1 of MIL-STD-883, "Provisions for the use of MIL-STD-883 in conjunction with compliant non-JAN devices".

The complete part number shall be as shown in the following example:

The device type shall identify the circuit function as follows:

Device type Generic number Circuit function 01 7924A 1.0 A negative regulator, fixed 24-volt

The case outlines shall be as designated in appendix C of MIL-M-38510, and as follows:

Outline letter Case outline X See figure 1, TO-39 (3-lead can) Y See figure 1, TO-3 (2-lead can) Z See figure 1, TO-66 (2-lead can)

Input voltage: Operating or output shorted to ground - - - - - - −40 V dc Transient - - - - - - - - - - - - - - - - - - - - −50 V dc 1/ Storage temperature range - - - - - - - - - - - - - −65°C to +150°C Lead temperature (soldering, 10 seconds) - - - - - +300°C Power dissipation (P_D): T_C = +25°C: Case X- - - - - - - - - - - - - - - - - - - - - - 2 W Case Y and Z - - - - - - - - - - - - - - - - - - 20 W T_A = +25°C: Case X - - - - - - - - - - - - - - - - - - - - - 1.0 W Case Y and Z - - - - - - - - - - - - - - - - - - 4.3 W Thermal resistance, junction-to-case (Θ_JC): Case X - - - - - - - - - - - - - - - - - - - - - 15°C/W Case Y and Z - - - - - - - - - - - - - - - - - - 3°C/W Thermal resistance, junction-to-ambient (Θ_JA): Case X - - - - - - - - - - - - - - - - - - - - - 120°C/W Case Y and Z - - - - - - - - - - - - - - - - - - 35°C/W Junction temperature (T_J) - - - - - - - - - - - - - 150°C 2/

Ambient operating temperature range (T_A) - - - - - - −55°C to +125°C Input voltage range - - - - - - - - - - - - - - - - −28 V dc to −38 V dc

intended Use: