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Product Detailed Parameters
- Description：OPTOISOLTR 5.3KV 1CH TRANS 4-DIP
- Series：-
- Mfr：Vishay Semiconductor Opto Division
- Package：Tube
- Number of Channels：1
- Voltage - Isolation：5300Vrms
- Current Transfer Ratio (Min)：100% @ 1mA
- Current Transfer Ratio (Max)：320% @ 1mA
- Turn On / Turn Off Time (Typ)：6µs, 5.5µs
- Rise / Fall Time (Typ)：3.5µs, 5µs
- Input Type：AC, DC
- Output Type：Transistor
- Voltage - Output (Max)：55V
- Current - Output / Channel：50mA
- Voltage - Forward (Vf) (Typ)：1.1V
- Current - DC Forward (If) (Max)：50 mA
- Vce Saturation (Max)：400mV
- Operating Temperature：-55°C ~ 100°C
- Mounting Type：Through Hole
- Package / Case：4-DIP (0.300", 7.62mm)
- Supplier Device Package：4-DIP
- Grade：-
- Qualification：-
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Overview
The SFH628A-3 is a single-channel transistor output optocoupler manufactured by Vishay Semiconductor Opto Division. It features an NPN phototransistor output and supports AC input applications. The device provides high isolation voltage of 5300 Vrms with a DIP-4 through-hole package. Key electrical parameters include a maximum collector-emitter voltage of 55 V, maximum collector current of 100 mA, and forward current of 50 mA. The current transfer ratio ranges from 100% to 320%. Operating temperatures span from -55°C to +100°C.
Feature Summary
- High isolation voltage capability for safe signal transmission
- AC input compatibility for direct line sensing
- High current transfer ratio for efficient switching
Applications
- Line voltage detection circuits
- Solid-state relay drivers
- Microprocessor system isolation
Procurement Notes
Verify the specific suffix matches the required package type and CTR range. Confirm RoHS compliance status via official datasheets. Ensure the supplier source is authorized to guarantee component authenticity. Check lead times against production schedules. Validate that the ordering code corresponds exactly to the DIP-4 configuration.
Selection Notes
Select this component when AC input detection is required alongside high isolation. Compare CTR ranges against load requirements. Consider thermal dissipation limits within the operating temperature range. Verify pinout compatibility with existing PCB layouts. Assess switching speed requirements against rise and fall time specifications.
Part Context
This part belongs to the SFH628 series of transistor output optocouplers. It shares design similarities with SFH628A-2 but offers different CTR characteristics. The series is designed for general-purpose isolation in industrial and consumer electronics. It complements surface-mount variants like SFH6286 for flexible design options.
Replacement Considerations
SFH628A-2 serves as a functional substitute with similar isolation and package. SFH628A-3X016 offers identical electrical performance in the same DIP-4 format. Verify pin compatibility and CTR overlap before substitution.
