ISQ204-3

Transistor, Photovoltaic Output Optoisolators Overview

The ISQ204-3 is a four-channel transistor output optocoupler manufactured by Isocom Components. It integrates infrared light-emitting diodes with NPN silicon phototransistors in a space-efficient dual-in-line plastic package. The device provides high isolation voltage of 5.3kVRMS and 7.5kVPK, ensuring reliable signal transmission between systems with different potentials. Key electrical characteristics include a minimum current transfer ratio of 50%, a minimum collector-emitter breakdown voltage (BVCEO) of 70V, and low input current requirements of 0.5mA IF.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Four independent channels for multi-signal isolation
• Low input current operation for energy efficiency
• High isolation voltage capability for safety
• NPN silicon phototransistor output structure

Transistor, Photovoltaic Output Optoisolators Applications

• Computer terminals
• Industrial systems controllers
• Signal transmission between systems of different potentials and impedances

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the specific suffix designation when ordering, as options such as G for 10mm lead spread, SM for surface mount, or SMT&R for tape and reel packaging alter the physical form factor. Confirm that the selected variant matches the required PCB layout and assembly method. Ensure the component meets RoHS compliance standards if applicable to the target market regulations.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when designing circuits requiring galvanic isolation for multiple signals simultaneously. The four-channel configuration reduces board space compared to using discrete single-channel units. Consider the 70V BVCEO rating for applications involving higher voltage switching on the output side. The low input current requirement makes it suitable for driving from low-power logic sources.

Transistor, Photovoltaic Output Optoisolators Part Context

The ISQ204-3 belongs to the IS204 series of optically coupled isolators produced by Isocom Components. This series includes variants like IS204-1, ISD204-2, and ISQ204-3, all sharing the core technology of infrared LEDs paired with NPN phototransistors. The 'Q' in the part number typically denotes the quad-channel configuration within this product family.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

Direct substitutes may include other quad-channel transistor output optocouplers from manufacturers such as Vishay or Sharp, provided they match the DIP-16 package and electrical specifications. Verify pinout compatibility and isolation voltage ratings before substitution.