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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)：63% @ 1mA
- Current Transfer Ratio (Max)：200% @ 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-2 is a single-channel transistor output optocoupler manufactured by Vishay Semiconductor Opto Division. It features an NPN phototransistor output and provides 5300 Vrms isolation voltage. The device operates in a DIP-4 through-hole package with a current transfer ratio ranging from 63% to 125%. Key electrical parameters include a maximum collector-emitter voltage of 55 V, a maximum collector current of 100 mA, and a forward current of 50 mA. The typical rise time is 3.5 µs and the fall time is 5 µs. It supports an operating temperature range from -55°C to +100°C.
Feature Summary
- Provides high galvanic isolation capability for signal transmission between isolated circuits
- Features a standard NPN phototransistor output configuration for digital switching applications
- Designed for through-hole mounting in compact DIP-4 packages
Applications
- General purpose digital signal isolation
- Microcontroller interface circuits
- Power supply feedback loops
Procurement Notes
Verify the specific CTR binning (63-200%) against design requirements. Confirm the DIP-4 package dimensions match the PCB footprint. Ensure the 5300 Vrms isolation rating meets safety standards for the target application environment. Check RoHS compliance status if required by project specifications.
Selection Notes
Select this component when a robust, low-cost transistor output isolator is needed for digital signals. The DIP-4 package suits manual assembly or wave soldering processes. Consider the 63-200% CTR spread for worst-case gain calculations in the driving circuit design. Verify that the 55 V collector voltage is sufficient for the load side supply.
Part Context
This part belongs to the SFH628 family of optocouplers, which are designed for general-purpose isolation. The SFH628A series specifically offers a wide current transfer ratio range. It serves as a cost-effective alternative to higher-speed logic output isolators where propagation delay is not critical. The DIP-4 form factor ensures compatibility with legacy board designs.
Replacement Considerations
SFH628A-3X016 offers similar isolation but different CTR ranges. VOL628A provides surface mount packaging with comparable electrical characteristics. Verify pinout compatibility before substitution.
