K5V1BU43T is a right angle lighted through-hole tactile switch featuring a translucent actuator with blue LED illumination and gold-plated dome contact. This SPST/SPDT switch provides momentary action with normally open and normally closed contact arrangement, operating at 4.0 N (400 grams) force with a travel of 1.2 mm (2.4 mm total). The switch operates within a voltage range of 20 mVdc to 32 Vdc and current range of 0.1 mA to 100 mA, with contact resistance below 150 mO and bounce time under 5 ms. It features an operating temperature range of -40°C to 85°C, 40 N overload protection, and is RoHS compliant with lead-free soldering compatibility. Ideal for server, storage, automotive, network infrastructure, and medical applications where backlighting and switching functionality are required in a single component.