4N51, 4N52,
67023 4N53, 4N54
HERMETIC, NUMERIC AND HEXIDECIMAL DISPLAYS
TABLE III
GROUP B, CLASS A AND B OF MIL-PRF-87157
Test
Subgroup 1
MIL-PRF-750
Conditions
Sample Size
Method
Resistance to Solvents
1022
2075
4 Devices / 0 Failures
1 Device / 0 Failures
Internal Visual and Mechanical (10)
Subgroup 2(1,2)
Solderability
2026
LTPD = 15
LTPD = 15
TA = 245°C for 5 seconds
Subgroup 3
Thermal Shock (Temp. Cycle)
Moisture Resistance(3)
Fine Leak
1051
1021
1071
1071
------
Condition B1, 15 Min. Dwell
Condition H
Gross Leak
Condition C
Electrical / Optical Endpoints(4)
IV, ICC, IBL, IBH, IEL, IEH, IIL, IIH and
visual function. TA = 25°C
Subgroup 4
Operating Life Test (340 hrs.)(5)
TA = 100°C, at VCC = 5.0V and
cycling through logic at 1 character
per second.
1027
------
LTPD = 10
Electrical / Optical Endpoints(4)
Subgroup 5
Same as Subgroup 3
Non-operating (Storage) Life
Test (340 hrs.)
1032
------
LTPD = 10
TA = 125°C
Electrical / Optical Endpoints(4)
Same as Subgroup 3
TABLE IV
GROUP C, CLASS A AND B OF MIL-PRF-87157
Test
MIL-PRF-750
Conditions
Sample Size
Method
Subgroup 1
Physical Dimensions
2066
2 Devices / 0 Failures
LTPD = 15
Subgroup 2(2, 10)
Lead Integrity
Fine Leak
2004
1071
1071
Condition B2
Condition H
Condition C
Gross Leak
Subgroup 3
Shock
2016
1500G, Time = 0.5 ms, 5 blows in
each orientation X1, Y1, Z1
LTPD = 15
Vibration, Variable Frequency
Constant Acceleration
2056
2006
10,000G at Y1 orientation
External Visual(7)
1010 or 1011
------
Electrical / Optical Endpoints(4)
IV, ICC, IBL, IBH, IEL, IEH, IIL, IIH and
visual function. TA = 25°C
Subgroup 4(1,6)
Salt Atmosphere
External Visual(7)
Subgroup 5
1041
LTPD = 15
1010 or 1011
Bond Strength(8)
Subgroup 6
2037
Condition A
LTPD = 20 (c = 0)
LTPD = 10
Operating Life Test(9)
1026
------
TA = +100°C 1000 HRS
Electrical / Optical Endpoints(4)
Same as Subgroup 3
NOTES: 1. Whenever electrical/optical tests are not required as endpoints, electrical rejects may be used.
2. The LTPD applies to the number of leads inspected, except in no case shall less than 3 displays be used to provide the number of leads required.
3. Initial conditioning should be a 15” bend inward one cycle.
4. Limits and conditions are per the electrical/optical characteristics.
5. Burn-in for the over range shall use Condition B at a nominal I = 8 mA with “+1” illuminated for t=340 hours.
F
6. Solderability samples shall not be used.
7. Visual requirements shall be as specified in MIL-PRF-883, Methods 1010 or 1011.
8. Displays may be selected prior to seal.
9. If a given inspection lot, undergoing Group B inspection, has been selected to satisfy the Group C inspection requirements, the 340 hour life tests may
be continued on test to 1000 hours in order to satisfy the Group C Life Test requirements. In such cases, either the 340 hour endpoint measurements
shall be made a basis for Group B lot acceptance or the 1000 hour endpoint measurement shall be used as the basis for both Group B and Group C
acceptance.
10. MIL-PRF-883 test method applies.
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