IS181D Optocoupler Transistor Output SOP-4 50mA 3.75kV 300%

The IS181D is a high-density, 1-channel optocoupler presented in a compact SOP-4 package. It integrates an infrared light-emitting diode (LED) with an NPN silicon phototransistor, providing reliable electrical isolation and signal transfer between circuits of different potentials and impedances. All electrical parameters are 100% tested to ensure consistent performance and reliability.

Key features include a 50mA forward current, a 6V reverse voltage, and a 170mW total power dissipation. The device offers an isolation voltage of 3.75kV and a minimum current transfer ratio (CTR) of 300%, making it suitable for a range of industrial and electronic applications.

Applications

• Industrial systems controllers
• Signal transmission between systems of different potentials and impedances
• Computers and computer peripherals
• Test and measurement equipment
• Signal processing circuits

Specifications

• No. of Channels: 1
• Optocoupler Case Style: SOP
• No. of Pins: 4
• Forward Current (If Max): 50mA
• Reverse Voltage: 6V
• Isolation Voltage: 3.75kV
• CTR Min: 300%
• Collector Emitter Voltage (V(br)ceo): 80V
• Total Power Dissipation: 170mW

The IS181D is supplied in a tape and reel format, ideal for high-volume assembly. Its high-density mounting capability and robust electrical characteristics make it a versatile choice for engineers looking to isolate and protect sensitive circuits.