ISQ204X-3G

Transistor, Photovoltaic Output Optoisolators Overview

The ISQ204X-3G is a through-hole optically coupled isolator from the ISOCOM Components SFH628A series. It integrates an infrared LED with an NPN silicon phototransistor in a 4-pin DIP package. Key electrical parameters include a minimum isolation voltage of 5300 Vrms and a peak isolation of 7500 V. The device features a low input current requirement of 0.5 mA and a high current transfer ratio ranging from 100% to 320%. Typical switching times are 4 µs for rise and 3 µs for fall, with a maximum collector-emitter voltage of 70 V.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Provides galvanic isolation between input and output circuits using optical transmission.
• Designed for low input current operation to reduce power consumption.
• Offers high isolation voltage capability for robust noise immunity.
• Utilizes an NPN phototransistor output for standard logic interfacing.

Transistor, Photovoltaic Output Optoisolators Applications

• Computer terminal interfaces
• Industrial system controllers
• Signal transmission between systems of different potentials

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the specific suffix 'X-3G' against official Isocom documentation to confirm lead spread and packaging details. Ensure the component matches the required DIP form factor and pin configuration for your PCB layout. Cross-reference the manufacturer part number with authorized distributors to confirm authenticity and compliance with relevant safety standards.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when low drive current is critical for the input side of the isolation barrier. The high current transfer ratio ensures reliable signal switching even at minimal input levels. Verify that the 70V collector-emitter voltage rating meets the requirements of the output circuit load. Confirm that the DIP package style is compatible with the assembly process.

Transistor, Photovoltaic Output Optoisolators Part Context

This part belongs to the IS204/ISD204/ISQ204 family of low input current phototransistor optocouplers. These devices are engineered for space-efficient dual in-line plastic packages. The series is characterized by high density and robust isolation performance, suitable for general-purpose digital isolation tasks in compact electronic designs.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

Compatible substitutes within the same family include IS204-3G and ISD204-3G. These variants share identical functional characteristics and pinouts. Verify that any replacement maintains the same isolation voltage ratings and current transfer ratio specifications.