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Product Detailed Parameters
- Description：OPTOISOLTR 3.75KV 1CH DARL 4-SOP
- Series：-
- Mfr：Vishay Semiconductor Opto Division
- Package：Tape & Reel (TR)
- Number of Channels：1
- Voltage - Isolation：3750Vrms
- Current Transfer Ratio (Min)：1000% @ 1mA
- Current Transfer Ratio (Max)：-
- Turn On / Turn Off Time (Typ)：1.5µs, 53.5µs
- Rise / Fall Time (Typ)：1µs, 20.5µs
- Input Type：DC
- Output Type：Darlington
- Voltage - Output (Max)：300V
- Current - Output / Channel：50mA
- Voltage - Forward (Vf) (Typ)：1.2V
- Current - DC Forward (If) (Max)：50 mA
- Vce Saturation (Max)：1V
- Operating Temperature：-55°C ~ 100°C
- Mounting Type：Surface Mount
- Package / Case：4-SMD, Gull Wing
- Supplier Device Package：4-SOP (2.54mm)
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Overview
The SFH692AT is a single-channel photodarlington output optocoupler manufactured by Vishay Semiconductor Opto Division. It features a high current transfer ratio exceeding 1000% and provides an isolation voltage of 3750 Vrms. The device operates within a temperature range of -55°C to +100°C and supports a maximum forward current of 50 mA with a forward voltage of 1.4 V. Key electrical parameters include a collector-emitter breakdown voltage of 300 V, a maximum collector current of 50 mA, and a maximum dark power supply of 200 nA. It is housed in a compact SOP-4 Mini-Flat package.
Feature Summary
- High gain photodarlington output configuration for sensitive signal detection
- Integrated built-in diode and resistor for enhanced circuit functionality
- Robust insulation capability with 3750 Vrms isolation rating
Applications
- Industrial control systems requiring high-gain isolation
- Microprocessor interface circuits
- Power supply feedback loops
Procurement Notes
Verify the specific manufacturer part number against official Vishay documentation to confirm component authenticity and specifications. Ensure that the ordering suffix matches the required package type and tape/reel configuration. Cross-reference the datasheet revision history to validate compliance with current RoHS standards and material declarations before finalizing procurement orders.
Selection Notes
Select this component when high current transfer ratio and fast response are critical for signal isolation. The integrated internal components simplify external circuit design compared to standard phototransistor variants. Consider the SOP-4 package dimensions for PCB layout constraints and verify thermal management requirements for operation near the upper temperature limit.
Part Context
This device belongs to the family of transistor output optoisolators designed for reliable electrical isolation between low-voltage control circuits and higher-voltage load circuits. It utilizes LED-to-photodarlington technology to provide galvanic separation while maintaining signal integrity across the isolation barrier.
Replacement Considerations
Public sources indicate the SFH692AT has an obsolete status. Verify availability of direct substitutes or alternative Vishay series parts with compatible pinouts and electrical characteristics.
