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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),Cut Tape (CT)
- Number of Channels：1
- Voltage - Isolation：3750Vrms
- Current Transfer Ratio (Min)：50% @ 5mA
- Current Transfer Ratio (Max)：150% @ 5mA
- Turn On / Turn Off Time (Typ)：5µs, 3µs
- Rise / Fall Time (Typ)：3µs, 4µs
- Input Type：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)：400mV
- Operating Temperature：-55°C ~ 110°C
- Mounting Type：Surface Mount
- Package / Case：4-SMD, Gull Wing
- Supplier Device Package：4-SOP
- Grade：-
- Qualification：-
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Overview
The SFH1690AT is a single-channel transistor output optoisolator manufactured by Vishay Semiconductor Opto Division. It features an infrared emitting diode optically coupled to a silicon phototransistor in a 4-SOP package. Key electrical parameters include a maximum collector-emitter voltage of 70 V, a forward current of 50 mA, and a forward voltage of 1.4 V. The device provides an insulation voltage of 3750 Vrms and operates within a temperature range of -55 °C to +110 °C. The current transfer ratio ranges from 50% to 300%, with a maximum power dissipation of 150 mW.
Feature Summary
- High isolation voltage capability for safe signal transmission between isolated circuits
- Wide operating temperature range suitable for demanding industrial environments
- Compact SOP-4 surface mount package design for space-constrained applications
Applications
- Industrial automation control systems requiring galvanic isolation
- Power supply feedback loops for voltage regulation
- Microcontroller interface circuits for noise immunity
Procurement Notes
Verify the specific suffix (AT) against official Vishay documentation to confirm the exact Current Transfer Ratio binning and packaging configuration. Ensure compatibility with SOP-4 footprint requirements during PCB layout. Confirm lead times as manufacturing schedules may vary. Cross-reference datasheet revisions to ensure parameter consistency with existing designs.
Selection Notes
Select this component when high isolation voltage and wide temperature operation are required. Compare CTR specifications against circuit gain requirements. Verify that the 70 V collector-emitter voltage meets load switching needs. Consider the SOP-4 package dimensions for mechanical fit. Evaluate thermal management capabilities given the 150 mW power dissipation limit.
Part Context
The SFH1690AT belongs to the SFH1690 family of optocouplers, which includes variants like SFH1690BT, SFH1690CT, and SFH1690ABT. These devices share similar structural characteristics but differ in performance bins such as Current Transfer Ratio. The family utilizes GaAs infrared emitters and silicon phototransistors for reliable optical coupling.
Replacement Considerations
Check for direct substitutes within the SFH1690 family based on CTR requirements. Verify pinout compatibility with SOP-4 packages before substitution. Ensure replacement parts meet the same 3750 Vrms isolation rating and temperature specifications.
