FOD817D3SD

Overview

The FOD817D3SD is a single-channel transistor output optocoupler manufactured by onsemi. It features an NPN phototransistor output and utilizes surface-mount SMD-4 packaging. The device provides an insulation voltage of 5000 Vrms, ensuring robust electrical isolation between input and output circuits. Key electrical parameters include a collector-emitter voltage of 70 V, a maximum forward current of 50 mA, and a typical forward voltage of 1.4 V. The current transfer ratio ranges from 300% to 600%, with rise and fall times of 18 µs. It operates within a temperature range of -55°C to +110°C and has a power dissipation rating of 200 mW.

Feature Summary

• Provides high-voltage isolation via 5000 Vrms insulation capability for safe signal transmission across potential differences.
• Utilizes an NPN phototransistor output configuration suitable for standard digital and analog switching applications.
• Designed for surface-mount assembly using compact SMD-4 packages to facilitate automated PCB manufacturing.

Applications

• Signal isolation in general-purpose industrial control systems
• Interface circuits for microprocessor-based logic systems
• Power supply feedback loops requiring galvanic isolation

Procurement Notes

Verify the specific suffix '3SD' against official onsemi documentation to confirm the exact reel quantity and tape-and-reel specifications. Ensure the procurement channel sources genuine components directly from authorized distributors or the manufacturer to avoid counterfeit devices. Cross-reference the RoHS compliance status and regional certification marks such as UL, C-UL, and VDE as required by your target market regulations before finalizing orders.

Selection Notes

Select this component when a single-channel isolation solution with moderate speed (18 µs) is required. The wide current transfer ratio range accommodates varying LED drive currents. Consider the SMD-4 package constraints for board space. Verify that the 70 V collector-emitter voltage meets the load requirements. Compare against other FOD817 variants if different CTR grades or through-hole packages are needed for existing designs.

Part Context

This part belongs to the FOD817 series, a family of transistor output optocouplers known for reliability in isolation applications. The FOD prefix typically denotes enhanced safety certifications compared to standard 817 series parts. The D3SD suffix indicates the specific binning for current transfer ratio and the surface-mount packaging format, distinguishing it from through-hole DIP equivalents like the FOD817D.

Replacement Considerations

Public confirmed substitute part numbers: None identified in provided source data.