ISQ204G

Transistor, Photovoltaic Output Optoisolators Overview

The ISQ204G is a quad-channel optically coupled isolator manufactured by Isocom Components. It integrates four infrared light-emitting diodes with NPN silicon phototransistors in a space-efficient dual in-line plastic package. The device provides high isolation voltage of 5300 Vrms and a minimum collector-emitter breakdown voltage (BVCEO) of 70V. Key electrical parameters include a low input current requirement of 0.5mA IF, a minimum current transfer ratio of 50%, and a maximum collector dark current of 50nA. It operates within a temperature range of -25°C to +100°C.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Four independent channels for signal transmission between systems of different potentials
• High isolation voltage capability ensuring robust electrical separation
• Low input current requirement reducing power consumption
• NPN silicon phototransistor output structure

Transistor, Photovoltaic Output Optoisolators Applications

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

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the specific suffix 'G' against official Isocom documentation to confirm lead spread or packaging variations. Ensure the component meets RoHS compliance requirements as indicated in general datasheets. Confirm the exact pinout and package dimensions for PCB layout compatibility before procurement.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when multiple isolated channels are required in a compact DIP format. The low input current specification makes it suitable for battery-powered or energy-efficient applications. Verify that the 70V BVCEO rating meets the circuit's voltage isolation needs.

Transistor, Photovoltaic Output Optoisolators Part Context

The ISQ204G belongs to the IS204/ISD204/ISQ204 series of low input current phototransistor optocouplers. This family offers options for surface mount and tape & reel packaging. The 'G' suffix typically denotes specific mechanical variations such as lead spread within the standard DIP configuration.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

Check for direct substitutes like SFH617 or SFH628 series components from Isocom if channel count differs. Verify pin compatibility and electrical ratings before substituting with generic quad-channel optocouplers.