4N51, 4N52,
67023 4N53, 4N54
Test
Subgroup 1
Resistance to Solvents
(10)
Internal Visual and Mechanical
(1,2)
Subgroup 2
Solderability
Subgroup 3
Thermal Shock (Temp. Cycle)
(3)
Moisture Resistance
Fine Leak
Gross Leak
(4)
Electrical / Optical Endpoints
Subgroup 4
(5)
Operating Life Test (340 hrs.)
Electrical / Optical Endpoints
Subgroup 5
Non-operating (Storage) Life
Test (340 hrs.)
(4)
Electrical / Optical Endpoints
Test
Subgroup 1
Physical Dimensions
(2, 10)
Subgroup 2
Lead Integrity
Fine Leak
Gross Leak
Subgroup 3
Shock
Vibration, Variable Frequency
Constant Acceleration
(7)
External Visual
(4)
Electrical / Optical Endpoints
Subgroup 4
Salt Atmosphere
(7)
External Visual
Subgroup 5
(8)
Bond Strength
Subgroup 6
(9)
Operating Life Test
(4)
Electrical / Optical Endpoints
NOTES: 1.
2.
3.
4.
(1,6)
(4)
HERMETIC, NUMERIC AND HEXIDECIMAL DISPLAYS
TABLE III
GROUP B, CLASS A AND B OF MIL-PRF-87157
MIL-PRF-750
Method
1022
2075
2026
1051
1021
1071
1071
------
Conditions
Sample Size
4 Devices / 0 Failures
1 Device / 0 Failures
T
A
= 245°C for 5 seconds
Condition B1, 15 Min. Dwell
Condition H
Condition C
I
V
, I
CC
, I
BL
, I
BH
, I
EL
, I
EH
, I
IL
, I
IH
and
visual function. T
A
= 25°C
T
A
= 100°C, at V
CC
= 5.0V and
cycling through logic at 1 character
per second.
Same as Subgroup 3
T
A
= 125°C
Same as Subgroup 3
Conditions
LTPD = 15
LTPD = 15
1027
------
1032
------
MIL-PRF-750
Method
2066
2004
1071
1071
2016
2056
2006
1010 or 1011
------
LTPD = 10
LTPD = 10
TABLE IV
GROUP C, CLASS A AND B OF MIL-PRF-87157
Sample Size
2 Devices / 0 Failures
LTPD = 15
Condition B2
Condition H
Condition C
1500G, Time = 0.5 ms, 5 blows in
each orientation X
1
, Y
1
, Z
1
10,000G at Y
1
orientation
I
V
, I
CC
, I
BL
, I
BH
, I
EL
, I
EH
, I
IL
, I
IH
and
visual function. T
A
= 25°C
LTPD = 15
LTPD = 15
1041
1010 or 1011
2037
1026
------
Condition A
LTPD = 20 (c = 0)
LTPD = 10
Same as Subgroup 3
T
A
= +100°C
1000 HRS
Whenever electrical/optical tests are not required as endpoints, electrical rejects may be used.
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.
Initial conditioning should be a 15” bend inward one cycle.
Limits and conditions are per the electrical/optical characteristics.
5. Burn-in for the over range shall use Condition B at a nominal I
F
= 8 mA with “+1” illuminated for t=340 hours.
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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•
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•
(972) 272-3571
•
Fax (972) 487-6918
www.micropac.com
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