PS2561DL1-1Y-L-A

Overview

The PS2561DL1-1Y-L-A is a single-channel transistor output optocoupler manufactured by Renesas Electronics. It integrates a GaAs infrared emitting diode and an NPN silicon phototransistor within a four-pin DIP package. The device provides high isolation voltage of 5000 Vrms between input and output circuits. Key electrical parameters include a maximum collector-emitter voltage of 80 V, a maximum collector current of 50 mA, and a forward voltage of approximately 1.4 V at 10 mA forward current. The unit features a current transfer ratio ranging from 50% to 160%, with typical rise and fall times of 3 µs and 5 µs respectively.

Feature Summary

• Integrates a GaAs light emitting diode and an NPN silicon phototransistor for signal transmission
• Provides high electrical isolation capability between input and output sides
• Designed for surface mount or through-hole installation in a compact four-pin configuration

Applications

• Industrial control systems requiring galvanic isolation
• Power supply feedback loops
• Signal transmission across isolated barriers

Procurement Notes

Verify the specific suffix L-A against official Renesas documentation to confirm pinout and packaging details. Confirm availability status as distribution channels may list obsolete or limited stock items. Ensure compliance with RoHS directives if required by the target application environment. Cross-reference the manufacturer part number with authorized distributor catalogs to avoid counterfeit components.

Selection Notes

Select this component when a single-channel transistor output isolator with moderate speed characteristics is required. Consider the 5000 Vrms isolation rating for safety-critical applications. Evaluate the current transfer ratio range to ensure adequate signal coupling for the load requirements. Verify that the DIP-4 package fits the available board space and assembly method constraints.

Part Context

This part belongs to the PS2561 series of transistor output optocouplers. The series includes variants such as PS2561-1, PS2561L-1, and PS2561A-1, which share similar functional architectures but differ in specifications like isolation voltage, current transfer ratio, and package type. The DL1-1Y-L-A variant specifically denotes a lead-free, halogen-free version in a standard DIP-4 housing.

Replacement Considerations

Direct replacements must match the 4-pin DIP form factor and NPN phototransistor output type. Verify equivalent isolation voltage and current transfer ratio ranges. Check datasheets for compatible replacement parts from other manufacturers to ensure pin compatibility and electrical performance alignment.