PS2565L-1

Overview

The PS2565L-1 is a single-channel optically coupled isolator from the NEPOC series, manufactured by CEL. It integrates a Gallium Arsenide (GaAs) light-emitting diode with an NPN silicon phototransistor output. The device utilizes a lead-bending Gull-wing surface mount package designed for enhanced creepage distance and high isolation voltage of 5000 Vrms. Key electrical characteristics include a typical current transfer ratio of 200% and high-speed switching capabilities with rise and fall times of approximately 3µs and 5µs respectively. It supports AC and DC input signals.

Feature Summary

• Supports AC input response for direct connection to AC power lines
• Provides high isolation voltage capability for safety-critical applications
• Features high current transfer ratio for efficient signal transmission
• Utilizes Gull-wing surface mount leads optimized for long creepage distance

Applications

• AC-powered equipment control circuits
• Industrial automation systems requiring galvanic isolation
• Power supply feedback loops
• Microprocessor interface circuits

Procurement Notes

Verify the specific suffix codes on the component marking against official CEL documentation to confirm pin configuration and package variant. Ensure that the ordering number matches the required tape-and-reel or tube packaging format. Cross-reference approval numbers such as UL E72422 if regulatory compliance is mandatory for the end application. Confirm availability status as distribution channels may list obsolete or discontinued variants.

Selection Notes

Select this component when a surface mount solution with extended creepage distance is required for AC input applications. The Darlington-type phototransistor offers higher current gain compared to standard phototransistors, suitable for driving loads directly. Verify that the operating temperature range of -55°C to 100°C meets environmental requirements. Consider the 80mA maximum forward current rating when designing the input driver circuit.

Part Context

This part belongs to the PS2565/PS2566 family of NEC/CEL photocouplers. The PS2565 series specifically denotes a standard NPN phototransistor output, distinguishing it from the PS2566 series which uses a Darlington transistor. The 'L' suffix indicates the lead-bending Gull-wing package type, while 'L1' specifies the single-channel configuration within that package style.

FAQ

What is the difference between PS2565L-1 and PS2566L-1?

The PS2565L-1 contains an NPN silicon phototransistor, whereas the PS2566L-1 contains an NPN silicon Darlington connected phototransistor. This results in a significantly higher current transfer ratio for the PS2566L-1.

Does the PS2565L-1 support AC input?

Yes, the datasheet explicitly lists AC input response as a feature, allowing it to be driven directly from AC sources without additional rectification in some configurations.