PS2501-1-M-A

Overview

The PS2501-1-M-A is a single-channel optically coupled isolator manufactured by CEL. It integrates a Gallium Arsenide (GaAs) infrared emitting diode with an NPN silicon phototransistor to provide electrical isolation between input and output circuits. The device features a high isolation voltage of 5000 Vrms, ensuring robust signal transmission in noisy environments. Key electrical parameters include a forward current of 80 mA, a forward voltage of 1.4 V, and a collector-emitter voltage rating of 80 V. The typical rise and fall times are 3 µs and 5 µs, respectively, supporting efficient DC input conversion applications.

Feature Summary

• Integrates a GaAs light emitting diode and an NPN silicon phototransistor for optical isolation
• Provides high insulation voltage capability for reliable circuit separation
• Designed for DC input conversion with transistor output configuration

Applications

• DC input conversion systems
• Signal isolation in industrial control circuits
• Microprocessor interface circuits requiring galvanic isolation

Procurement Notes

Verify the specific suffix -M-A against official datasheets to confirm lead-free status and RoHS compliance. Ensure the DIP-4 package type matches your PCB footprint requirements. Cross-reference the manufacturer designation as CEL or NEC/CEL depending on the supply chain source to avoid counterfeit components.

Selection Notes

Select this component when a single-channel isolation solution with high voltage withstand capability is required. The NPN phototransistor output is suitable for interfacing with digital logic inputs. Consider the 5000 Vrms isolation rating for safety-critical applications where primary-to-secondary separation is mandatory.

Part Context

This part belongs to the PS2501 series of high isolation voltage photocouplers. The series includes variants such as PS2501-1, PS2501-4, and surface mount options like PS2501L-1. The PS2501-1-M-A specifically denotes the single-channel version in a plastic DIP package with specific manufacturing attributes indicated by the suffix.

Replacement Considerations

Compatible substitutes within the same family include PS2501-1 and PS2501L-1. Verify pinout compatibility and package dimensions before substitution. Ensure the replacement maintains the 5000 Vrms isolation rating and NPN phototransistor output characteristics.