PS2505L-1-A

Overview

The PS2505L-1-A is a single-channel optically coupled isolator manufactured by Renesas Electronics. It integrates an aluminum gallium arsenide (AlGaAs) light-emitting diode with an NPN silicon phototransistor output. The device provides high isolation voltage of 5,000 Vrms and supports AC input response capabilities. Key electrical parameters include a collector-to-emitter voltage (VCEO) of 80 V, a typical current transfer ratio (CTR) of 600% at 5 mA forward current, and rise/fall times of approximately 3 µs and 5 µs respectively. It operates within a temperature range of -55°C to +100°C.

Feature Summary

• High isolation voltage capability for safe signal transmission between isolated circuits
• AC input response functionality allowing direct connection to AC sources without rectification
• High current transfer ratio ensuring efficient signal coupling with low input drive requirements

Applications

• Industrial control systems requiring galvanic isolation
• Power supply feedback loops for voltage regulation
• Solid-state relay driver circuits

Procurement Notes

Verify the specific suffix 'A' against the official Renesas datasheet to confirm it denotes the lead-free and RoHS-compliant variant. Ensure the package type matches the required DIP-4 or SOP-4 configuration for your PCB layout. Confirm the component status is active for new designs, as some related models may be marked as not recommended for new use.

Selection Notes

Select this component when AC input compatibility is required alongside high isolation voltage. The high CTR makes it suitable for driving loads directly or through minimal amplification. Compare rise and fall times against system switching speed requirements. Ensure the operating temperature range meets the environmental conditions of the target application.

Part Context

This part belongs to the PS2505 series of transistor-output optocouplers. The series includes variants like PS2505-1 and PS2505L-4, differing in channel count and package style. The 'L' designation typically indicates a specific package form factor or enhanced isolation rating compared to standard versions. Renesas continues this lineage from former NEC semiconductor products.

Replacement Considerations

Direct replacements include PS2505-1-A for standard package equivalents. Verify pinout compatibility before substitution. Other manufacturers offer similar AC-input optocouplers, but ensure isolation voltage and CTR specifications match or exceed the original design requirements.