ISP321-4XBL

Transistor, Photovoltaic Output Optoisolators Overview

The ISP321-4XBL is a single-channel optocoupler manufactured by Isocom Components. It features an infrared LED input paired with a phototransistor output, housed in a surface-mount DIP package. The device provides high isolation capability with a minimum rated isolation voltage of 5300 Vrms. Key electrical parameters include a maximum forward voltage of 1.4V and a typical rise time of 4µs. The unit supports a maximum input current of 50 mA and offers a current transfer ratio ranging from 200% to 600%. Operating temperatures span from -55°C to 100°C.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Provides galvanic isolation between input and output circuits using infrared light transmission
• Features a phototransistor output stage for digital signal switching applications
• Designed for surface-mount assembly within compact electronic systems

Transistor, Photovoltaic Output Optoisolators Applications

• Industrial control systems requiring circuit isolation
• Power supply protection and monitoring circuits
• Smart metering and utility instrumentation interfaces

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the specific suffix against official manufacturer documentation to confirm pinout compatibility and packaging variations. Ensure that the procurement source provides valid RoHS compliance certificates and material declarations. Cross-reference the component marking with the datasheet to prevent substitution errors during assembly.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when high isolation voltage is required for safety-critical applications. Consider the current transfer ratio range to ensure adequate signal gain for the load requirements. Verify that the surface-mount package dimensions fit the available PCB real estate constraints.

Transistor, Photovoltaic Output Optoisolators Part Context

This part belongs to the ISP817 series of optocouplers produced by Isocom Components. The series is designed as a replacement for standard industry isolators, offering specialized parameter selection for specific circuit designs. Isocom focuses on providing alternative sourcing for discontinued or hard-to-find optical components.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

Consult official Isocom documentation for confirmed substitute part numbers within the ISP817 family. Verify pin compatibility before replacing existing designs with similar devices from other manufacturers.