IL223AT

Transistor, Photovoltaic Output Optoisolators Overview

The IL223AT is a high-speed phototransistor output optocoupler manufactured by Vishay. It features an infrared-emitting GaAlAs LED coupled to a silicon phototransistor within a four-pin DIP-4 package. Key electrical characteristics include a collector-emitter breakdown voltage (VCEO) of 55 V and a collector cutoff current (ICBO) of 10 nA maximum at rated voltage. The device offers a high current transfer ratio (CTR) typically ranging from 80% to 160% at IF=5 mA, ensuring efficient signal transmission. It supports a propagation delay of 3 µs maximum and operates with a junction temperature range up to 100°C.

Transistor, Photovoltaic Output Optoisolators Feature Summary

• High-speed response capability suitable for digital signal isolation applications
• Integrated infrared-emitting GaAlAs LED provides efficient optical coupling
• Silicon phototransistor output ensures reliable switching performance
• RoHS compliant construction available in standard DIP-4 packaging

Transistor, Photovoltaic Output Optoisolators Applications

• Digital communication interface isolation
• Microprocessor system input/output isolation
• Solid-state relay driver circuits
• Pulse width modulation signal transmission

Transistor, Photovoltaic Output Optoisolators Procurement Notes

Verify the specific suffix 'AT' indicates the tape-and-reel packaging configuration when ordering. Confirm that the required current transfer ratio bin matches your circuit design specifications. Ensure compatibility with the specified operating temperature range for your intended environment. Check for RoHS compliance status if environmental regulations apply to your production process.

Transistor, Photovoltaic Output Optoisolators Selection Notes

Select this component when high-speed digital isolation is required between low-voltage logic circuits and higher-voltage loads. Consider the CTR tolerance and propagation delay limits against your system timing requirements. Evaluate the package thermal resistance and mounting constraints for your PCB layout. Compare alternative optocouplers if lower power consumption or different isolation voltage ratings are necessary.

Transistor, Photovoltaic Output Optoisolators Part Context

This part belongs to Vishay's general-purpose optocoupler family designed for industrial and commercial applications. The IL223 series provides a balance of speed and reliability for isolating control signals. Similar parts in the lineup may offer different CTR ranges or packaging options but share the same fundamental phototransistor output architecture.

Transistor, Photovoltaic Output Optoisolators Replacement Considerations

Direct replacements must match the DIP-4 footprint and pinout configuration. Verify that substitute components meet or exceed the 55 V VCEO rating and similar propagation delay specifications. Ensure the replacement maintains comparable CTR performance at the same forward current to avoid circuit redesign.