MIL-PRF-19500/581 Complete Document History
Semiconductor Device, Transistor, NPN, Silicon Amplifier, Types 2N4237, 2N4238, and 2N4239, JAN, JANTX, and JANTXV

Complete Current Edition:
   REVISION D - Transistor, NPN, Silicon, Amplifier, Types 2N4237, 2N4238, and 2N4239, Quality Levels JAN,   JANTX, and JANTXV - Dec. 11, 2019

Obsolete Revision Information:
   REV C VALIDATION 1 - VALIDATION NOTICE 1 FOR REVISION C - Dec. 11, 2017
   REVISION C - Semiconductor Device, Transistor, NPN, Silicon Amplifier, Types 2N4237, 2N4238, and 2N4239, JAN, JANTX, and JANTXV - Feb. 21, 2013
   REV B VALIDATION 1 - VALIDATION NOTICE 1, REV B - July 14, 2011
   REVISION B - JAN, JANTX, & JANTXV - March 10, 2005
   REV A AMENDMENT 1 - AMENDMENT 1 FOR REVISION A - Nov. 29, 1999
   REVISION A - JAN, JANTX, & JANTXV - Sept. 10, 1999