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MIL-DTL-9419 Switch, Toggle, Momentary, Four-Position On, Center Off, General Specification ForThis specification covers a four-position, momentary on, center off, positive action switch with free return to the off position.

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MIL-DTL-9419G

TABLE I Qualification inspection sequence.

Number of

Requirement

Test method

Inspection

sample

paragraph

units to be tested

Group I

3.1, 3.3, 3.4, 3.6, 3.7

4.7.1

Visual and mechanical inspection

3.5.18

4.7.20

Resistance to soldering heat 1/

Dielectric withstanding voltage

3.5.8

4.7.10

All

Switch resistance

3.5.19

4.7.21

Switching characteristics

Actuating force

Actuating lever travel

Group II

Solderability

Strength of terminals

Strength of actuating lever pivot and lever

3.5.3

4.7.5

stop

Thermal shock

3.5.13

4.7.15

4 samples

Shock

Acceleration

Vibration

Moisture resistance

Dielectric withstanding voltage

3.5.8

4.7.10

Visual and mechanical examination

3.1, 3.3, 3.4, 3.6, 3.7

4.7.1

Switching characteristics

Group III

2 samples

Salt spray

3.1, 3.3, 3.4, 3.6, 3.7

4.7.1

Visual and mechanical examination

3.1

4.7.2

Switching characteristics

Group IV

Electrical overload

3.5.5

4.7.7

Electrical endurance 2/

Temperature rise

4 samples

Switch resistance

3.5.19

4.7.21

Dielectric withstanding voltage

3.5.8

4.7.10

Visual and mechanical examination

3.1, 3.3, 3.4, 3.6, 3.7

4.7.1

Switching characteristics

3.1

4.7.2

Group V

Altitude

2 samples

Dielectric withstanding voltage

3.1, 3.3, 3.4, 3.6, 3.7

4.7.1

Visual and mechanical examination

3.1

4.7.2

Switching characteristics

1/ Four samples units only.

2/ Two sample unit for normal electrical endurance and two sample units for high speed electrical

endurance.