MIL-S-19500/272 Revision C, November 26, 1968
SEMICONDUCTOR DIODE SILICON, VOLTAGE-REGULATOR TYPES (TX AND NON-TX) 1N3993A THRU 1N4000A AND THE RA
Includes all amendments and changes through Cancellation Notice 2, April 20, 1998
Additional Comments: CNCL S/S BY MIL-PRF-19500/124
This specification covers the detail requirements for silicon, 10 watt, voltage regulator diodes with the following ratings and characteristics. The prefix "TX" is used on devices submitted to and passing the special process-conditioning, testing, and screening tests specified in 4.9 through 220.127.116.11.
Forward and reverse types are identical except: the forward (A) types have the cathode connected to the stud; the reverse (RA) types have the anode connected to the stud (see 3.5.2). Designated values are applicable to both types.
See figure 1.