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Product Detailed Parameters
- Description：OPTOISO 3.75KV 1CH TRANS 4-SOP
- Series：-
- Mfr：Vishay Semiconductor Opto Division
- Package：Tape & Reel (TR)
- Number of Channels：1
- Voltage - Isolation：3750Vrms
- Current Transfer Ratio (Min)：50% @ 5mA
- Current Transfer Ratio (Max)：300% @ 5mA
- Turn On / Turn Off Time (Typ)：5µs, 3µs
- Rise / Fall Time (Typ)：3µs, 4µs
- Input Type：AC, DC
- Output Type：Transistor
- Voltage - Output (Max)：70V
- Current - Output / Channel：50mA
- Voltage - Forward (Vf) (Typ)：1.15V
- Current - DC Forward (If) (Max)：50 mA
- Vce Saturation (Max)：300mV
- Operating Temperature：-55°C ~ 100°C
- Mounting Type：Surface Mount
- Package / Case：4-SMD, Gull Wing
- Supplier Device Package：4-SOP (2.54mm)
- Grade：-
- Qualification：-
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Overview
The SFH691A-X001T is a single-channel optocoupler featuring a phototransistor output and an infrared LED input. It provides electrical isolation with a rated insulation voltage of 3750 Vrms. The device is housed in a compact 4-SOP surface-mount package, designed for high-density mounting applications. Key electrical characteristics include a current transfer ratio range of 50% to 300%, ensuring reliable signal transmission across the isolation barrier while maintaining low power consumption.
Feature Summary
- Integrates an infrared emitter with a phototransistor detector for galvanic isolation
- Designed for high-density surface-mount assembly in compact form factors
- Provides robust electrical isolation suitable for AC input monitoring circuits
Applications
- AC input detection and monitoring systems
- High-density digital isolator interfaces
- General-purpose signal isolation in industrial control modules
Procurement Notes
Verify the specific suffix X001T corresponds to the 4-SOP tape-and-reel packaging configuration. Confirm that the required current transfer ratio falls within the 50-300% specification range for the target application. Ensure compatibility with the 3750 Vrms isolation rating against system safety standards. Cross-reference the manufacturer part number with official Vishay documentation to confirm component authenticity and revision status.
Selection Notes
Select this component when a small footprint is critical for PCB layout density. Choose the SFH691A-X001T over through-hole alternatives if surface-mount technology is mandated. Consider the 50-300% CTR range for variable gain requirements. Opt for this device specifically for AC input sensing applications where its phototransistor output特性 aligns with circuit design needs.
Part Context
This part belongs to Vishay's SFH691 series of transistor-output optocouplers. It shares functional similarities with other devices in the family but is distinguished by its specific 4-SOP package and reel packaging designation. The series is engineered for general-purpose isolation tasks requiring compact dimensions and reliable performance in industrial environments.
Replacement Considerations
Public confirmed substitute part numbers are not available in the provided documentation. Verify pinout compatibility and isolation voltage ratings before considering alternative manufacturers' components.
