ChipApex | Global Electronic Components Supplier
SEARCH
Search Product
Search Post
— IC芯片 | 连接器 | 传感器 | 被动器件 —
Consult the customer manager about the wholesale price.
consultation hotline：86-132-6715-2157
email：[email protected]
Contact the product manager for consultation. One-stop consultation is available.
Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.
Product Detailed Parameters
- Description：OPTOISO 3.75KV 1CH TRANS 4-SOP
- Series：-
- Mfr：Vishay Semiconductor Opto Division
- Package：Tape & Reel (TR),Cut Tape (CT)
- 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：-
Download product information
Overview
The SFH691AT is a single-channel optocoupler featuring a GaAs infrared emitting diode optically coupled to a silicon planar phototransistor. It utilizes an AC input configuration and is housed in a Mini-Flat SOP-4 package with a 2.54mm pitch. The device provides a high isolation voltage of 3750Vrms. Key electrical parameters include a typical forward voltage of 1.15V, a maximum DC forward current of 50mA, and a collector-emitter saturation voltage of 300mV. The Current Transfer Ratio ranges from 50% to 300% at 5mA input. Operating temperatures span from -55°C to +100°C.
Feature Summary
- AC input configuration for direct mains sensing applications
- High isolation voltage capability of 3750Vrms
- Mini-Flat SOP-4 surface mount packaging
Applications
- Mains voltage detection circuits
- Switching power supplies
- Solid-state relays
Procurement Notes
Verify the specific suffix against official Vishay documentation to confirm pinout and electrical characteristics. Ensure the component meets required insulation coordination standards for the target application. Confirm RoHS compliance status through the manufacturer's latest product change notifications or datasheet revision history before finalizing procurement.
Selection Notes
Select this component when AC input detection is required without additional signal conditioning. The SOP-4 footprint suits space-constrained designs. Verify that the 50mA maximum forward current rating aligns with the driving circuit capabilities. Ensure the 3750Vrms isolation rating exceeds the system's working voltage requirements.
Part Context
This part belongs to the Vishay SFH series of optocouplers, designed for general-purpose isolation. The SFH691AT specifically targets AC input applications, distinguishing it from standard DC-input variants within the same family. It offers a compact solution for isolating low-voltage control logic from higher voltage AC lines.
Replacement Considerations
Cross-reference with SFH691A-X001T for similar AC input functionality. Verify pin compatibility and isolation ratings against other Vishay SOP-4 optocouplers.
