ISQ204SM

Transistor, Photovoltaic Output Optoisolators Overview

The ISQ204SM is a surface-mount, four-channel transistor output optocoupler manufactured by Isocom Components. It integrates infrared light-emitting diodes with NPN silicon phototransistors in a space-efficient plastic package. The device provides high isolation voltage of 5300 Vrms and 7500 Vpk between input and output circuits. Key electrical characteristics include a minimum collector-emitter breakdown voltage (BVCEO) of 70 V, a low input forward current requirement of 0.5 mA, and a minimum current transfer ratio of 50%. These specifications support reliable signal transmission across systems with different potentials.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Four independent channels for multi-signal isolation
• Surface-mount construction for automated assembly
• High dielectric isolation barrier
• Low drive current capability

Transistor, Photovoltaic Output Optoisolators Applications

• Computer terminal interfaces
• Industrial system controllers
• Signal transmission between disparate potentials

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the specific suffix against official Isocom documentation to confirm surface-mount configuration and tape-and-reel availability. Ensure the selected variant matches the required lead spread or package dimensions for the target PCB layout. Cross-reference the datasheet issue date to confirm compliance with current environmental standards.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when multiple isolated channels are required in a compact footprint. The low input current specification reduces power consumption in LED driver stages. Verify that the 70 V collector-emitter breakdown voltage meets the load requirements of the receiving circuitry within the application environment.

Transistor, Photovoltaic Output Optoisolators Part Context

This part belongs to the ISQ204 series of optically coupled isolators from Isocom Components. The series includes through-hole variants such as ISQ204-1 and ISD204-1. The SM suffix specifically denotes the surface-mount package option, distinguishing it from standard DIP configurations while maintaining identical internal semiconductor structures and electrical performance metrics.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

Direct substitutes include other four-channel transistor output optocouplers with comparable isolation ratings. Verify pinout compatibility and channel count before substitution. Alternative packages may require mechanical adaptation.