FOD617BSD

Overview

The FOD617BSD is a single-channel transistor output optocoupler manufactured by onsemi. It features an NPN phototransistor output and is housed in a 4-SMD surface mount package. The device provides a high isolation voltage of 5000 Vrms, ensuring robust galvanic isolation between input and output circuits. Key electrical parameters include a maximum collector-emitter voltage of 70 V, a maximum forward current of 50 mA, and a typical current transfer ratio of 320%. The component operates within a temperature range of -55°C to +110°C and has a power dissipation rating of 200 mW.

Feature Summary

• Provides galvanic isolation with a 5000 Vrms insulation voltage rating for safe signal transmission across potential differences.
• Utilizes an NPN phototransistor output configuration suitable for digital switching and logic interface applications.
• Designed for surface mount assembly using a compact 4-SMD package format.

Applications

• General-purpose signal isolation in industrial control systems
• Interface circuits for microcontrollers and logic devices
• Power supply feedback loops requiring high isolation

Procurement Notes

Verify the specific suffix 'BSD' to confirm the surface mount package type and tape-and-reel or bulk packaging details. Confirm that the component meets required safety certifications such as UL, VDE, or C-UL for the intended application region. Check for obsolescence status as older series may have limited availability from original manufacturers.

Selection Notes

Select this component when a surface mount solution is required for single-channel isolation with high voltage ratings. Ensure the design accommodates the 50 mA maximum forward current and 70 V collector-emitter voltage limits. Consider the 320% typical current transfer ratio for driving subsequent logic stages without additional amplification.

Part Context

This part belongs to the FOD series of optocouplers from onsemi, which are widely used for general-purpose isolation. The FOD617BSD specifically adapts the standard through-hole FOD617 functionality into a surface mount footprint, facilitating automated PCB assembly while maintaining similar electrical performance characteristics.

Replacement Considerations

Direct substitutes include other 4-pin SMD transistor output optocouplers with comparable 5000 Vrms isolation and NPN outputs, such as the PC817X series in SMD packages or equivalent offerings from Vishay and Sharp, provided pinouts and electrical ratings match.