51904 \(Clear Lens\)This specification covers the performance requirements for hermetically-sealed red discrete and panel mount light emitting diodes. Two levels of product assurance are provided for each device type as specified in MIL┬ûPRF┬û19500.

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MIL�PRF�19500/519E

TABLE II. Group A inspection for panel mount assemblies.

Limits

MIL�STD�750

Symbol

Unit

Inspection 1/

Method

Conditions

Min

Max

Subgroup 1

External visual

2071

examination

Subgroup 2

Θ = 0 degrees; (see 3.3 and 4.5.1)

Luminous intensity

2/ 3.0

mcd

IV1

3/ 20.0

mcd

IF = 20 mA dc

Θ = 30 degrees; IF = 20 mA dc

Luminous intensity 2/

1.5

mcd

IV2

�A dc

Reverse current

4016

1.0

DC method; VR = 3 V dc

Forward voltage

4011

3.0

V dc

DC method, IF = 20 mA dc

Subgroup 3, 4, 5, and 6

Not applicable

Subgroup 7

Solderability 4/

2026

15 devices, c = 0

Resistance to solvents

1022

15 devices, c = 0

Physical dimensions

2066

See figure 2, 45 devices, c = 0

For sampling plan, see MIL�PRF�19500.

Applies to JAN19500/51901 and JANTX19500/51902.

Applies to JANM19500/51903 and JANTX19500/51904.

The sample size for solderability test applies to the number of leads inspected except in no case shall less than

three leads be used to provide the number of leads required.