MIL-PRF-22885/56H
REQUIREMENTS:
Dimensions and configuration: See figures 1 through 5.
Design and construction:
Enclosure design: 1 (unsealed).
Material and finish:
Lens display screen: Shall be clear transparent thermoplastic material.
Lens housing: Finished black.
Switch housing and mounting sleeve.
Without RFI shielding, finished black.
With RFI shielding, chemical filmed in accordance with MIL-DTL-5541.
Illuminated push button switch shall consist of:
1 - Lamp module (lens) in accordance with MIL-PRF-22885/52 or /53 (see table IV) accommodates four
midget-flange-base T-1-3/4 incandescent lamps. Lens design permits application of photographic or
engraved legends.
1 - Switch housing with mounting sleeve.
4 - Lamps (T-1-3/4 midget-flange-base) - Not included, order separately.
Temperature characteristic: 1 (-55°C to +85°C).
Electrical ratings:
Contact rated load:
Load
28 V dc
115 V ac
amperes
amperes
Resistive
2.0
2.0
Inductive
1.0
1.0
Lamp
0.75
0.75
RFI
Requirement: When switches are tested in accordance with the following test method, the attenuation shall
not be less than specified in figure 5.
Test method: Switches shall be tested to determine shielding effectiveness in accordance with the general
procedures specified in IEEE 299. The test shall consist of electric field and plane wave
measurements performed at the following frequencies:
Minimum
Plane
Minimum
Electric Field
attenuation
wave
attenuation
15 kHz
60 dB
100 MHz
47 dB
150 kHz
60 dB
400 MHz
39 dB
500 kHz
60 dB
1 GHz
33 dB
1 MHz
60 dB
2.5 GHz
28 dB
10 MHz
60 dB
10 GHz
20 dB
4
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