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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)：200% @ 5mA
- Current Transfer Ratio (Max)：400% @ 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)：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 SFH690DT is a single-channel phototransistor output optocoupler manufactured by Vishay Semiconductor Opto Division. It integrates a GaAs infrared emitting diode with a silicon planar phototransistor detector in a 4-pin SOP (Mini-Flat) package with 100 mil lead pitch. Key electrical specifications include an isolation test voltage of 3750 Vrms, a maximum collector-emitter voltage of 70 V, and a typical forward voltage of 1.4 V. The device supports a maximum DC forward current of 50 mA and offers a current transfer ratio ranging from 200% to 400% at 5 mA. Switching characteristics feature typical rise and fall times of 3 µs and 4 µs, respectively, with a saturation voltage of 300 mV maximum.
Feature Summary
- High isolation voltage capability of 3750 Vrms for safe signal transmission between electrically separated circuits
- Fast switching performance with low coupling capacitance for efficient data transmission
- Temperature stable operation across a wide range from -55°C to +100°C
- End-stackable design with 0.100 inch spacing for compact surface-mount integration
Applications
- Signal transmission between electrically separated circuits
- General purpose digital signal isolation
- Low power logic interface applications
Procurement Notes
Verify the specific CTR binning (200-400%) against design requirements, as this variant differs from other SFH690 family members. Confirm RoHS3 compliance status and ensure the SOP-4 package dimensions match the PCB footprint. Check for any recent PCN updates regarding manufacturing site changes or material improvements before finalizing procurement.
Selection Notes
Select the SFH690DT when high isolation voltage and fast switching are required in a small surface-mount package. Compare its 200-400% CTR range against lower gain variants if higher drive capability is needed. Ensure the 70 V collector-emitter voltage rating exceeds the load voltage. Consider the 50 mA max forward current limit when designing the input circuit resistor values.
Part Context
The SFH690DT belongs to the Vishay SFH690 series, which includes variants like SFH690ABT, SFH690BT, and SFH690CT. These devices share the same Mini-Flat SOP-4 package and basic optical structure but differ primarily in their Current Transfer Ratio (CTR) bins. The DT suffix specifically denotes the 200-400% CTR bin, distinguishing it from lower or higher gain options within the same family.
Replacement Considerations
Direct substitutes within the SFH690 family include SFH690AT, SFH690BT, and SFH690CT, provided the CTR differences are acceptable for the application. Verify that alternative parts maintain the same 3750 Vrms isolation rating and SOP-4 package compatibility.
