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FOD817SD
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Product Detailed Parameters
- Description：OPTOISOLATOR 5KV 1CH TRANS 4-SMD
- Series：-
- Mfr：onsemi
- Package：Tape & Reel (TR),Cut Tape (CT)
- Number of Channels：1
- Voltage - Isolation：5000Vrms
- Current Transfer Ratio (Min)：50% @ 5mA
- Current Transfer Ratio (Max)：600% @ 5mA
- Turn On / Turn Off Time (Typ)：-
- Rise / Fall Time (Typ)：4µs, 3µs
- Input Type：DC
- Output Type：Transistor
- Voltage - Output (Max)：70V
- Current - Output / Channel：50mA
- Voltage - Forward (Vf) (Typ)：1.2V
- Current - DC Forward (If) (Max)：50 mA
- Vce Saturation (Max)：200mV
- Operating Temperature：-55°C ~ 110°C
- Mounting Type：Surface Mount
- Package / Case：4-SMD, Gull Wing
- Supplier Device Package：4-SMD
- Grade：-
- Qualification：-
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Overview
The FOD817SD is a surface-mount transistor output optocoupler from onsemi, featuring a single channel and 4-pin SMD package. It provides 5000Vrms isolation voltage with a typical rise time of 4µs and fall time of 3µs. The device supports a maximum forward current of 50mA and has a typical forward voltage of 1.2V. Current transfer ratio ranges from 50% to 600% at 5mA input. Operating temperature spans -55°C to 110°C, with a maximum collector-emitter saturation voltage of 200mV.
Feature Summary
- Provides high-voltage electrical isolation between input and output circuits using phototransistor technology.
- Features fast switching performance with low propagation delays for signal integrity.
- Designed for surface-mount assembly to facilitate automated PCB manufacturing.
Applications
- General-purpose signal isolation in industrial control systems
- Power supply feedback loops for voltage regulation
- Interface circuits between microcontrollers and high-voltage loads
Procurement Notes
Verify the specific suffix 'SD' confirms the surface-mount 4-SMD configuration and standard CTR range. Ensure compliance with RoHS3 standards and check moisture sensitivity level (MSL 1) requirements for storage and reflow soldering profiles. Confirm that the 5000Vrms isolation rating meets the safety certification needs of the target application environment.
Selection Notes
Select this component when surface-mount packaging is required for space-constrained designs. Choose based on the need for 5000Vrms isolation and NPN phototransistor output characteristics. Consider the 4µs/3µs rise/fall times against system speed requirements. Verify that the 50mA collector current capability aligns with load driving needs without external amplification.
Part Context
The FOD817SD belongs to the FOD817 series of phototransistor optocouplers manufactured by onsemi. This series is widely used for general isolation purposes, offering a balance of performance and cost-effectiveness. The SD variant specifically denotes the surface-mount dip (SMD) package format, distinguishing it from through-hole DIP versions like the FOD817A or FOD817B.
Replacement Considerations
Compatible substitutes include other 4-pin SMD transistor output optocouplers with similar 5kV isolation ratings. Verify pinout compatibility and CTR specifications before substitution. Check if alternative manufacturers offer equivalent packages such as SO-4 or mini-DIP formats with matching electrical parameters.
