Fairchild Semiconductor H21B1_0088K Collector Current (dc) (max): 40mA Collector-emitter Voltage: 30V Forward Current: 50mA Gap Width: 3.3mm Lead Free Status / Rohs Status: Compliant Mounting: Through Hole Number Of Elements: 1 Operating Temp Range: -55C to 100C Operating Temperature Classification: Industrial Output Device: Photodarlington Pin Count: 4 Power Dissipation: 150mW Reverse Breakdown Voltage: 6V Slit Width: 0.889mm Type: Transmissive