PS2561-1-V-L-A

Overview

The PS2561-1-V-L-A is a single-channel transistor output optocoupler manufactured by CEL. It integrates a GaAs infrared emitting diode and an NPN silicon phototransistor within a surface-mount plastic package. Key electrical parameters include a maximum collector-emitter breakdown voltage of 80 V, a typical current transfer ratio of 400% at 5 mA input, and a rise/fall time of 3 µs/5 µs. The device supports DC input and provides high isolation voltage of 5000 Vrms.

Feature Summary

• Integrates a GaAs light emitting diode with an NPN silicon phototransistor for signal transmission
• Provides high isolation voltage capability for safety-critical applications
• Features fast switching characteristics with specified rise and fall times
• Designed for surface mount assembly in compact electronic circuits

Applications

• High-voltage isolation interfaces in industrial control systems
• Signal coupling between microcontrollers and power stages
• Safety barrier implementations in medical equipment
• Noise immunity enhancement in communication lines

Procurement Notes

Verify the manufacturer designation as CEL against datasheet documentation to ensure component authenticity. Confirm that the specific suffix corresponds to the lead bending L1 type surface mount package. Check for UL recognition status if required by end-product safety standards. Ensure compliance with RoHS directives for environmental regulations.

Selection Notes

Select this component when a single-channel transistor output isolator is required with high current transfer ratio capabilities. The 80 V collector-emitter breakdown voltage suits low-to-medium voltage switching applications. Verify that the surface mount footprint matches the PCB design constraints. Consider the 5000 Vrms isolation rating for galvanic separation requirements.

Part Context

This part belongs to the PS2561 series of photocouplers, which are designed for cost-effective isolation solutions. The series typically includes DIP and surface mount variants with varying pin configurations. The PS2561-1-V-L-A specifically denotes the surface mount version with lead bending L1 type terminals, distinguishing it from standard DIP packages or other lead forms within the same family.

Replacement Considerations

Cross-reference with NEC PS2561AL2-1-E3-A for similar surface mount transistor output specifications. Verify pinout compatibility and isolation voltage ratings before substitution. Ensure the replacement part meets the same current transfer ratio and switching speed requirements.

FAQ

What is the typical current transfer ratio for this optocoupler?

The typical current transfer ratio is 400% when measured at an input current of 5 mA.

What is the maximum collector-emitter breakdown voltage?

The minimum collector-emitter breakdown voltage is specified as 80 V.

Does this component support DC input signals?

Yes, the input type is specified as DC, suitable for direct current control signals.