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B3W-9012-B2N Datasheet(PDF) 4 Page - Omron Electronics LLC |
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B3W-9012-B2N Datasheet(HTML) 4 Page - Omron Electronics LLC |
4 / 10 page 260 Illuminated Tactile Switches B3W-9 LED Specifications Note: For Switches with two LEDs, red and green, the recommended operating current is 12 mA for the red and 20 mA for the green LED for ap- plication with three-color illumination. LEDs ■ Ambient Temperature vs Maximum Forward Current ■ Forward Current and Forward Voltage Curves (Condition: T a=25°C) Note: 1. Pay attention to the polarity of each LED. The anode and cathode can be identified by finding the cathode mark, as indicated on the Dimensions page. 2. Connect limiting resistors to the LEDs. The Switch does not have built-in limiting resistors, so satisfy the LED characteristics by obtaining the limiting resistance according to the following formula based on the voltage to be used. LED color Red Green Green (high brightness) Yellow Blue Maximum Forward current I FM 27 mA 27 mA 27 mA 45 mA 27 mA Recommended operating current I F 20 mA 20 mA 10 mA 20 mA 10 mA Forward voltage (typical value) V F 1.8 V 2.1 V 3.7 V 2.4 V 3.7 V Maximum reverse voltage V R 5 V 5 V 5 V 5 V 5 V Ambient operating temperature -25 °C to 70°C 0 40 20 20 10 30 40 50 60 80 0 Ambient temperature Ta ( °C) Yellow High brightness Green and Blue Red, Green 0.2 0.5 5.0 50.0 100.0 0 1.5 0.1 2.0 20.0 200.0 0 1 2.5 3.5 1.0 10.0 300.0 00.5 2 3 Red Forward voltage VF (V) 0 100 90 80 70 60 50 40 30 20 10 0 0.5 1 1.5 2 2.5 3 3.5 Forward voltage VF (V) Green 0 2.0 1.5 40 20 60 80 100 2.5 3.0 1.0 Forward voltage VF (V) Yellow Green (High brightness), Blue 0 30 25 20 15 10 5 35 0 1234 5 Forward voltage VF (V) Limiting resistance (R)= (Voltage used (E) – LED forward voltage (VF)) LED forward current (IF) ( Ω) E R VF IF |
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