ISQ204-2SMT&R

Transistor, Photovoltaic Output Optoisolators Overview

The ISQ204-2SMT&R is a high-density phototransistor optically coupled isolator manufactured by Isocom Components. It integrates an infrared light-emitting diode and an NPN silicon phototransistor within a surface-mount plastic package. The device provides four independent channels of signal isolation, designed for applications requiring low input current operation with a minimum forward current of 0.5mA. It features a high current transfer ratio of at least 50% and offers robust electrical isolation capabilities with a rated isolation voltage of 5.3kVRMS and a peak voltage of 7.5kVPK. The unit includes a collector-emitter breakdown voltage (BVCEO) of a minimum 70V, ensuring reliable performance in industrial control systems and computer terminals.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• Integrates four independent channels of infrared LED and NPN phototransistor isolation
• Optimized for low input current operation to reduce power consumption
• Provides high electrical isolation voltage for safety-critical signal transmission
• Delivers high current transfer ratio for efficient signal coupling

Transistor, Photovoltaic Output Optoisolators Applications

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

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the specific suffix 'SMT&R' confirms the tape-and-reel packaging format required for automated assembly processes. Confirm that the base part number corresponds to the quad-channel configuration rather than single or dual variants. Ensure the component meets the required RoHS compliance standards for the target manufacturing region. Cross-reference the datasheet revision to confirm the exact pinout and mechanical dimensions match the PCB footprint design specifications.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when designing circuits that require multiple isolated channels within a compact surface-mount form factor. It is suitable for designs prioritizing low drive current requirements while maintaining high isolation integrity. Consider the 5.3kVRMS isolation rating for applications involving significant potential differences between input and output grounds. Evaluate the 70V BVCEO specification to ensure it accommodates the maximum expected load voltages in the phototransistor circuit without risk of breakdown.

Transistor, Photovoltaic Output Optoisolators Part Context

This device belongs to the ISQ204 series of high-density phototransistor optically coupled isolators from Isocom Components. The series utilizes space-efficient dual in-line plastic packages adapted for surface mount technology. It represents a specialized line of components designed to replace standard commercial optocouplers with enhanced parameter selection for specific circuit design requirements. The manufacturer emphasizes flexible manufacturing capabilities to support various lead forms and packaging options.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

Direct substitutes include other quad-channel phototransistor optocouplers with comparable isolation ratings and current transfer ratios. Verify pin compatibility and package dimensions before substitution. Alternative parts may offer different isolation voltages or speed characteristics. Ensure any replacement maintains the low input current requirement if power efficiency is critical. Check for equivalent surface-mount tape-and-reel availability.