MIL-PRF-19500/115N
4.4 Conformance inspection. Conformance inspection shall be in accordance with MIL-PRF-19500 and as
specified herein.
4.4.1 Group A inspection. Group A inspection shall be conducted in accordance with appendix E, table E-V of
MIL-PRF-19500, and table I herein.
4.4.2 Group B inspection. Group B inspection shall be conducted in accordance with the conditions specified for
subgroup testing in appendix E, table E-VIb (JAN, JANTX, and JANTXV) of MIL-PRF-19500, and as follows.
Electrical measurements (end-points) shall be in accordance with table I, subgroups 2 and 4 herein.
Subgroup
Method
Condition
-55C to +175C, 25 cycles.
B2
1051
B2
4066
See 4.5.1.
IZ = IZM column 8 of table III (min); adjust Iz or TA to achieve TJ = 150C (min).
B3
1027
B4
2101
Decap analysis scribe and break only.
* 4.4.3 Group C inspection. Group C inspection shall be conducted in accordance with the conditions specified for
subgroup testing in appendix E, table E-VII of MIL-PRF-19500, and as follows. Electrical measurements (end-points)
shall be in accordance with table I, subgroups 2 and 4 herein.
Subgroup
Method
Condition
C2
2036
Terminal strength: Test condition A; weight = 4 lbs; t = 15 seconds.
DO-41 - weight = 12 lbs, t = 15 seconds; DO-13 - weight = 8 lbs, t = 15 seconds.
Terminal strength: Test condition E. (Terminal strength not required for UR-1
devices.)
C3
Applies to DO-13 devices only.
C5
4081
See 4.5.7.
IZ = IZM column 8 of table III (min); adjust Iz or TA to achieve TJ = 150C (min).
C6
1026
IZ = IZ column 5 of table III; TA = +25C 5C; T2 = +125C 5C; VZ =
C8
4071
columns 15 and 16 of table III; 22 devices, c = 0.
4.5 Methods of inspection. Methods of inspection shall be as specified in the appropriate tables and as follows:
4.5.1 Surge current (IZSM). The peak currents shown in column 10 of table III shall be applied in the reverse
direction and these shall be superimposed on the current (IZ = IZ1) (column 5 of table III) a total of five (5) surges at 1
minute intervals. Each individual surge shall be one-half square-wave-pulse of 1/120 second duration or an
equivalent one-half sine wave with the same effective rms current.
4.5.2 Regulator voltage measurements. The test current shall be applied until thermal equilibrium is attained (90
seconds maximum) prior to reading the breakdown voltage. For this test, the surface mount device shall be mounted
at the end-caps and the axial leaded device shall be suspended by its leads with mounting clips whose inside edge is
located at .375 inch (9.53 mm) from the body and the mounting clips shall be maintained at a temperature of +25C
+8C,-2C . This measurement may be performed after a shorter time following application of the test current than
that which provides thermal equilibrium if correlation to stabilized readings can be established to the satisfaction of
the Government.
10
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business