PS2503L-2-A

Overview

The CEL PS2503L-2-A is a dual-channel transistor output optocoupler designed for high-speed switching applications. It features an NPN phototransistor output with a minimum current transfer ratio of 100% and a maximum of 400%. The device supports a forward current of up to 80 mA with a forward voltage of 1.3 V. It provides 5000 Vrms isolation voltage and operates within a temperature range of -55°C to +100°C. Key electrical limits include a maximum collector-emitter voltage of 40 V, a maximum collector current of 30 mA, and a power dissipation of 150 mW. Rise and fall times are specified at 20 µs.

Feature Summary

• Dual-channel configuration for independent signal isolation
• High-speed switching capability with defined rise and fall times
• Robust insulation voltage rating for safety isolation

Applications

• Industrial control systems requiring galvanic isolation
• Signal transmission between microprocessors and peripheral devices
• Power supply feedback loops

Procurement Notes

Verify the component status as obsolete or NRND through official Renesas or CEL channels before procurement planning. Confirm that the DIP-8 package variant matches your PCB footprint requirements. Ensure compliance with RoHS directives by checking the specific manufacturing batch documentation. Validate that the 5000 Vrms isolation rating meets your system's safety standards. Cross-reference the datasheet revision date to ensure parameter accuracy.

Selection Notes

Select this component when dual-channel isolation is required in a compact surface-mount or through-hole DIP package. Consider the 100% to 400% current transfer ratio range for logic interface compatibility. Evaluate the 20 µs switching speed against your application's frequency requirements. Ensure the 40 V collector-emitter voltage rating exceeds your load voltage. Verify thermal management capabilities given the 150 mW power dissipation limit.

Part Context

The PS2503L-2-A belongs to the PS2503L series of low input current, high-speed switching photocouplers originally developed by NEC and now managed by Renesas Electronics. This series is characterized by its small size and high reliability. The part number indicates a two-channel configuration with transistor outputs. It is distinct from single-channel variants like the PS2503L-1-A and other series such as the PS2566L which feature Darlington outputs.

Replacement Considerations

Official substitutes may include the PS2503L-1-A for single-channel needs or PS2503L-2-M-A if moisture sensitivity modifications are required. Verify pinout compatibility and electrical parameters against the original datasheet. Check for availability from authorized distributors as the part status may be restricted.