NASA Parts Selection List (NPSL)
 
Radiation Test:  GSFC SEU Radiation Data Bank 
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Manufacturer:  Active Supplier Assessment Program (ASAP) Core Suppliers List 
Part Procurement:  Part Number/Procurement details 
Application Notes:  Applicable details 
Last Update:  March 1998 
 
Transistors, Silicon
RF, PNP, PT @ TA = 25 °C, 0.2 W
Part Number
Detail Specification
MIL-PRF-19500/
F
(Mhz)
IC 
(A)
VCBO (V)
VCEO (V)
hFE 
Level 
Level
2, 3
Manufacturer
(Min/
Max)
at Ic
(mA)
JAN#@2N4957
426
450
0.03
30
30
30/165
5.0
-
TXV
SS
 
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