PS2503-4

Overview

The PS2503-4 is a quad-channel optoisolator manufactured by CEL, featuring NPN phototransistor outputs. It provides an isolation voltage of 5000 Vrms and supports up to four independent channels within a single package. The device accepts a maximum forward current of 80 mA for the input LED side. It is available in a 16-pin DIP configuration, designed for applications requiring high-speed signal transmission with robust electrical isolation between input and output circuits.

Feature Summary

• Quad-channel architecture enabling multiple isolated signal paths in a compact footprint
• High isolation voltage rating ensuring reliable separation between input and output circuits
• NPN phototransistor output type providing open collector functionality
• High-speed performance characteristics suitable for rapid signal transmission

Applications

• Industrial control systems requiring multi-channel isolation
• Communication interfaces needing galvanic separation
• Power supply feedback loops with multiple sensing points
• Microcontroller I/O expansion with electrical isolation

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm package type matches requirements, as variations may exist. Check lifecycle status, as this part may be obsolete. Ensure compatibility with existing circuit designs regarding pinout and electrical specifications before procurement.

Selection Notes

Select this component when multiple isolated channels are required in a single package. Consider the 5000 Vrms isolation rating for high-voltage separation needs. Verify that the NPN phototransistor output aligns with downstream circuit requirements. Evaluate speed specifications against application timing constraints.

Part Context

The PS2503-4 belongs to the PS2503 family of optocouplers from CEL. This family includes variants with different channel counts and output types. The quad-channel version offers space savings compared to using discrete single-channel devices. It is part of NEC/Cel's established optocoupler portfolio known for reliability.

Replacement Considerations

PS2505-4-A is a potential substitute from Renesas Electronics, offering similar quad-channel optocoupler functionality. Verify pin compatibility and electrical parameters before substitution. Lifecycle status should be confirmed for both parts.