By Omron Electronics Inc-EMC Div 354
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.
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LED Specifications
LED color | Red | Green | Yellow | Blue |
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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 |
Ratings/Characteristics | |
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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 |