B3W-9 Series Tactile Switches

By Omron Electronics Inc-EMC Div 237

B3W-9 Series Tactile Switches

The Omron 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 10 mm x 10 mm or 12 mm x 12 mm key cap area with a low profile of 11 mm 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 160 gf 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 mechanism
  • RoHS Compliant

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 temperature -25°C to 70°C at 60% maximum 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 maximum (initial value) (rated: 1 mA, 5 VDC)
Insulation resistance 100 MΩ minimum (at 250 VDC)
Dielectric strength 500 VAC, 50/60 Hz for 1 minute
Bounce time 5 ms maximum
Vibration resistance Malfunction: 10 to 55 Hz, 1.5 mm double amplitude
Shock resistance Destruction: 1,000 m/s2 {approx. 100 G} maximum
Malfunction: 100 m/s2 {approx. 10 G} maximum
Life expectancy Switch section 1.57 N: 1,000,000 operations minimum