ISOCOM ISP321-4XSM Optocoupler 4 Channel 16 Pin SMD DIP

The ISOCOM ISP321-4XSM is a high-density, 4-channel optically coupled isolator designed for reliable signal isolation across a wide range of industrial and electronic applications. This surface mount device integrates infrared light emitting diodes and NPN silicon phototransistors in a compact 16-pin package, ensuring robust performance in space-constrained designs.

With a minimum isolation voltage of 5.3kV, this optocoupler provides excellent protection against voltage spikes and ground loops, making it ideal for use in industrial systems controllers and for signal transmission between circuits operating at different potentials and impedances. Each channel supports a forward current of up to 50mA, and the device guarantees a minimum collector-emitter breakdown voltage of 80V (BVCEO), ensuring durability and stable operation under demanding conditions.

The ISP321-4XSM is fully tested for all electrical parameters, delivering consistent and dependable performance. It offers a 50% minimum current transfer ratio (CTR), which ensures efficient signal transfer while maintaining low power consumption—total power dissipation is just 200mW. The component's 100% electrical testing provides engineers with the confidence needed for critical applications.

Applications include computers, computer peripherals, industrial control systems, test and measurement equipment, and signal processing circuits. The product is supplied in a surface mount DIP package and is part of the ISP321 series, which also includes single and dual channel variants for design flexibility.

Key Specifications

• No. of Channels: 4
• Optocoupler Case Style: Surface Mount DIP
• No. of Pins: 16
• Forward Current If Max: 50mA
• Isolation Voltage: 5.3kV
• CTR Min: 50%
• Collector Emitter Voltage V(br)ceo: 80V
• Total Power Dissipation: 200mW