DPC817S-D-TR

Overview

The DPC817S-D-TR is a single-channel phototransistor output optocoupler manufactured by Diodes Incorporated. It features 5000 VRMS input-output isolation voltage and operates within a temperature range of -55°C to +110°C. Key electrical parameters include a maximum collector-emitter voltage of 35 V, a forward current of 5 mA, and a forward voltage of 1.25 V. The device exhibits a high current transfer ratio with a maximum value of 600% and a power dissipation rating of 200 mW.

Feature Summary

• Provides robust galvanic isolation between input and output circuits via an internal phototransistor structure.
• Designed for surface-mount installation in compact SL-4 packages suitable for automated assembly.
• Capable of operating reliably across extended industrial temperature ranges from -55°C to +110°C.

Applications

• Signal isolation in microcontroller interfacing circuits
• Switching applications requiring high current transfer efficiency
• Industrial control systems needing reliable DC signal transmission

Procurement Notes

Verify the specific suffix 'D' corresponds to the required Current Transfer Ratio bin, as variants like A, B, and S exist with different CTR specifications. Confirm package type SL-4 and tape-and-reel quantity match design requirements. Ensure compliance with RoHS directives if applicable to the target market. Cross-reference datasheet revisions to confirm thermal and electrical limits remain unchanged for production integration.

Selection Notes

Select this component when high current transfer ratio is critical for driving loads with minimal input current. Compare against lower CTR variants such as the A or B series if cost optimization outweighs performance needs. Verify that the 35 V collector-emitter voltage meets the load requirements. Consider the SL-4 package dimensions for PCB layout constraints and ensure thermal management supports the 200 mW dissipation limit under worst-case conditions.

Part Context

This part belongs to the DPC817S family of transistor output optocouplers from Diodes Incorporated. The family shares common isolation voltages and package styles but differs in Current Transfer Ratio bins. The D variant specifically targets applications demanding higher gain compared to standard 817 equivalents, offering enhanced signal integrity in noise-sensitive environments while maintaining compatibility with standard surface-mount processes.

Replacement Considerations

Direct substitutes include other DPC817S-D-TR units from authorized distributors. Alternative brands may offer similar SL-4 optocouplers, but verify pinout compatibility and CTR specifications carefully. Generic 817 replacements often have lower CTR and may require circuit adjustments. Ensure any substitute matches the 5000 VRMS isolation rating and -55°C to +110°C temperature range.