PS2702-1-K-A

Overview

The PS2702-1-K-A is a single-channel optoisolator manufactured by Renesas Electronics Corporation. It features a Darlington transistor output and provides an isolation voltage of 3750Vrms. The device operates within a temperature range of -55°C to +100°C and is housed in a 4-SOP surface-mount package. Key electrical parameters include a maximum collector-emitter voltage of 40V, a peak forward current of 50mA, and a typical forward voltage of 1.1V. The saturation voltage is rated at a maximum of 1V, with a minimum current transfer ratio of 200% at 1mA input.

Feature Summary

• Provides high-voltage galvanic isolation between input and output circuits using a Darlington phototransistor configuration.
• Designed for robust performance across extended industrial temperature ranges from -55°C to +100°C.
• Utilizes a compact 4-pin SOP surface-mount package suitable for automated assembly processes.

Applications

• Industrial control systems requiring signal isolation
• Power supply feedback loops
• Microcontroller interface circuits

Procurement Notes

Verify the specific suffix 'K' against the official Renesas datasheet to confirm packaging or material specifications. Confirm RoHS compliance status and lifecycle stage (NRND or Obsolete) prior to procurement. Ensure the supplier provides valid traceability documentation. Cross-reference the manufacturer part number with authorized distributor listings to avoid counterfeit components. Check for any recent Product Change Notifications affecting pinout or materials.

Selection Notes

Select this component when high current gain is required due to the Darlington output structure. Consider the 3750Vrms isolation rating for safety-critical applications. Evaluate the switching speed limitations inherent to Darlington outputs compared to standard phototransistors. Verify that the 40V collector-emitter voltage meets the load requirements. Ensure the SOP package dimensions fit the target PCB footprint constraints.

Part Context

This component belongs to the PS2702 series of single-channel optocouplers. It shares the same base architecture as variants like PS2702-1-V-F3-A but may differ in packaging or specific electrical tolerances defined by the suffix. The series is designed for general-purpose isolation tasks where moderate speed and high gain are prioritized over ultra-fast switching speeds.

Replacement Considerations

Direct substitutes include PS2702-1-V-F3-A and PS2702-1-L-A. Verify pin compatibility and electrical parameter equivalence before substitution. Note that PS2802-1-K-A offers higher CTR but different isolation characteristics.