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Compact Illuminated Tactile Switch

  • Overview
  • Features
  • Specifications
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Compact Illuminated Tactile SwitchThe B3W-9 series of SPST-NO (momentary) configuration LED illuminated tactile switches are available in red, yellow, blue and green LEDs. The keycaps utilize a proprietary diffusion panel to deliver uniform brightness across the entire surface. The B3W-9 is available in one, two or three color light models. The “tri-color” is accomplished when the red and green LEDs are simultaneously illuminated beneath the white keycap producing the third color, orange.

The switch utilizes Omron’s proven B3W switching mechanism creating a space saving 10mm x 10mm or 12mm x 12mm key cap area with a low profile of 11mm height. They have the same footprint as the B3W with the exception of the added LED connections on the PCB.

The B3W-9000 has an operating force of 160gf typical with a minimum service life of 1,000,000 operations. The contacts have a restive load rating of 5 through 24 VDC at 1 to 50mA while operating in a temperature range of –25°C to +70°C in 35% to 85% humidity without icing or condensation.

This series of switches is fully RoHS compliant and features a dust tight switching mechanism. These switches are ideal for use in applications requiring visual feedback confirming operation including test and measurement, office automation, amusement, industrial controls, and medical devices.


  • Compact construction (10 x 10 x 11 mm and 12 x 12 x 11 mm heights available) with bright and uniform illumination
  • Monocolor illumination, with 1 or 2 LEDs.
  • Three-color illumination possible (red LED + green
    LED = orange).
  • Keycap option includes LED color match, transparent or opaque white.
  • Dust tight internal switch mechanismRoHS Compliant

B3W-9 Features


LED Specifications
LED color Red Green Yellow Blue
Maximum Forward current IFMAX 27 mA 27 mA 45 mA 27 mA
Recommended operating current IF 20 mA 20 mA 20 mA 10 mA
Forward voltage (typical value) VF 1.8 V 2.1 V 2.4 V 3.7 V
Maximum reverse voltage VR 5 V 5 V 5 V 5 V

Switching capacity 1 to 50 mA, 5 to 24 VDC (resistive load)
Ambient operating temp. -25°C to 70°C at 60% max. humidity (with no icing or condensation)
Ambient operating humidity 35% to 85% (at 5°C to 35°C)
Contact configuration SPST-NO Momentary
Contact resistance 100 mΩ max. (initial value) (rated: 1 mA, 5 VDC)
Insulation resistance 100 MΩ min. (at 250 VDC)
Dielectric strength 500 VAC, 50/60 Hz for 1 min
Bounce time 5 ms max.
Vibration resistance Malfunction: 10 to 55 Hz, 1.5 mm double amplitude
Shock resistance Destruction: 1,000 m/s2 {approx. 100 G} max.
Malfunction: 100 m/s2 {approx. 10 G} max.
Life expectancy Switch section 1.57 N: 1,000,000 operations min.

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LED Color No. of LEDs Digi-Key P/N Omron P/N Cap Color
Blue 1 SW1037-ND B3W-9000-B1B Blue
SW1039-ND B3W-9000-B1N Milky white
Green 1 SW1035-ND B3W-9000-G1G Green
SW1042-ND B3W-9000-G1N Milky white
Red 1 SW1034-ND B3W-9000-R1R Red
SW1040-ND B3W-9000-R1N Milky white
Yellow 1 SW1036-ND B3W-9000-Y1Y Yellow
SW1041-ND B3W-9000-Y1N Milky white
Red + Green 2 SW1038-ND B3W-9000-RG2N Milky white
Click here for additional B3W-9 series product stocked by Digi-Key including 10X10 mm and 12X12 mm cap construction