MIL-PRF-19500/348F
* 4.3 Screening (JANTX, JANTXV, and JANS levels only). Screening shall be in accordance with table IV of
MIL-PRF-19500, and as specified herein. The following measurements shall be made in accordance with table I
herein. Devices that exceed the limits of table I herein shall not be acceptable.
Measurement
Screen (see table IV
of MIL-PRF-19500)
JANS level
JANTXV and JANTX level
1b
Required
Required (JANTXV only)
2
Optional
Optional
Required
Required
3a
Not applicable
Not applicable
3b
Required, method 3131 of MIL-STD-750
Required, method 3131 of MIL-STD-750
(1) 3c
4
Required
Optional
5
Required
Not required
6
Not applicable
Not applicable
7a and 7b
Optional
Optional
8
Required
Not required
9
ICBO1, hFE2 read and record
Not applicable
10
24 hours minimum
24 hours minimum
ICBO1; hFE2; ĆICBO1 = 100 percent of
ICBO1, hFE2
11
initial value or 50 nA dc, whichever is
greater. Ć hFE2 = ±25 percent
See 4.3.1
12
See 4.3.1, 240 hours minimum
Subgroup 2 of table I herein;
(2) 13
Subgroups 2 and 3 of table I herein;
Ć ICBO1= 100 percent of initial value or
Ć ICBO1= 100 percent of initial value or
50 nA dc, whichever is greater;
50 nA dc, whichever is greater;
Ć hFE2 = ±25 percent
Ć hFE2 = ±25 percent
14a and 14b
Required
Required
15
Required
Not required
16
Required
Not required
(1) Thermal impedance limits shall not exceed figures 4 and 5.
(2) PDA = 5 percent for screen 13, applies to ĆICBO1, ĆhFE2, ICBO1, and hFE2. Thermal impedance (ZΘJX) is not
required in screen 13.
5
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