PS2501-4-A

Overview

The CEL PS2501-4-A is a four-channel optically coupled isolator featuring a GaAs light-emitting diode and NPN silicon phototransistor outputs. It provides high isolation voltage of 5000Vrms with a maximum current transfer ratio of 600% at 5mA input. The device operates within a DC input type and supports output voltages up to 80V. Typical rise and fall times are 3µs and 5µs respectively. It is housed in a 16-DIP plastic package, suitable for applications requiring robust electrical isolation between circuits.

Feature Summary

• Four-channel configuration for multi-circuit isolation
• High isolation voltage rating for safety
• Fast switching speed with low propagation delay
• Compatible with standard DIP packaging

Applications

• Industrial control systems
• Power supply feedback loops
• Signal isolation in communication interfaces
• Microcontroller input/output protection

Procurement Notes

Verify the specific suffix 'A' against manufacturer documentation to confirm pinout and electrical characteristics match your design requirements. Ensure compatibility with existing PCB footprints for 16-DIP packages. Cross-reference datasheets from authorized distributors to confirm availability and lead times before finalizing procurement plans.

Selection Notes

Select this component when multiple isolated channels are required in a compact form factor. Consider the 5000Vrms isolation rating for safety-critical applications. Evaluate the 600% CTR specification to ensure sufficient signal transmission under varying temperature conditions. Confirm that the 16-DIP package fits within the mechanical constraints of the target enclosure.

Part Context

This part belongs to the PS2501 series of photocouplers, which are widely used for galvanic isolation. The series includes single and quad channel variants. The PS2501-4-A specifically denotes the quad-channel version with transistor output. It is manufactured by CEL, formerly known as NEC Electronics, and is designed for reliable performance in industrial environments.

Replacement Considerations

Check for direct replacements such as PS2501-4 or PS2501L-4 depending on package preference. Verify pin-to-pin compatibility with alternative manufacturers like Renesas or Vishay. Ensure isolation voltage and current transfer ratio specifications meet or exceed original requirements.