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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：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 SFH1690ABT is a single-channel transistor output optocoupler from Vishay, housed in a 4-SOP surface-mount package. It features an NPN phototransistor output with a maximum collector-emitter voltage of 70 V and a collector current of 100 mA. The device provides an insulation voltage of 3750 Vrms and operates within a temperature range of -55°C to +110°C. Key electrical parameters include a forward current of 50 mA, a forward voltage of 1.4 V, and a power dissipation of 150 mW. The current transfer ratio ranges from 50% to 300%, with a maximum collector-emitter saturation voltage of 400 mV.
Feature Summary
- High isolation voltage capability of 3750 Vrms for safe signal transmission
- Wide operating temperature range extending up to 110°C for robust performance
- Single channel configuration with NPN phototransistor output
Applications
- Industrial control systems requiring galvanic isolation
- Power supply feedback loops
- Signal isolation in microprocessor interfaces
Procurement Notes
Verify the specific suffix ABT corresponds to the required current transfer ratio range of 50-300%. Confirm that the 4-SOP package matches the PCB footprint requirements. Ensure compliance with RoHS standards if applicable to the final assembly. Cross-reference the datasheet for exact pinout dimensions to avoid mounting errors during integration.
Selection Notes
Select this component when high isolation voltage and wide temperature operation are critical. The NPN output suits applications requiring standard switching speeds. Consider the 4-SOP package for space-constrained designs. Evaluate the CTR range against the driving circuit requirements to ensure reliable signal transmission across all operating conditions.
Part Context
This part belongs to the SFH1690 family, which includes variants like SFH1690AT, BT, and CT. These devices share similar physical characteristics but differ in current transfer ratio specifications. The family utilizes a GaAs infrared emitting diode coupled to a phototransistor, providing consistent optical coupling performance across the series.
Replacement Considerations
Direct substitutes within the same family include SFH1690AT, SFH1690BT, and SFH1690CT. Verify that the alternative variant's current transfer ratio meets the application's minimum requirements. Ensure the replacement maintains the same 4-SOP package and insulation voltage rating.
