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Product Detailed Parameters
- Description：OPTOISOLTR 5.3KV 1CH TRANS 4-DIP
- Series：SFH628A-3
- Mfr：Isocom Components 2004 LTD
- 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)：-
- Rise / Fall Time (Typ)：4µs, 3µs
- Input Type：AC, DC
- Output Type：Transistor
- Voltage - Output (Max)：55V
- Current - Output / Channel：50mA
- Voltage - Forward (Vf) (Typ)：1.5V (Max)
- Current - DC Forward (If) (Max)：50 mA
- Vce Saturation (Max)：400mV
- Operating Temperature：-30°C ~ 100°C
- Mounting Type：Through Hole
- Package / Case：4-DIP (0.400", 10.16mm)
- Supplier Device Package：4-DIP
- Grade：-
- Qualification：-
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Overview
The SFH628A-3XG is a single-channel optocoupler featuring a transistor output, manufactured by Isocom Components 2004 LTD. It utilizes a 4-DIP package configuration for through-hole mounting. The device provides an isolation voltage of 5300Vrms between the input and output circuits. Key electrical parameters include a maximum collector current of 50 mA and a minimum current transfer ratio of 100% at a forward current of 1 mA. The saturation voltage (Vce) is specified with a maximum value of 400 mV.
Feature Summary
- Provides galvanic isolation via an infrared LED and phototransistor pair
- High isolation voltage rating for robust noise immunity
- Standardized DIP package for easy PCB integration
Applications
- General-purpose signal isolation in industrial control systems
- Interface circuits for microprocessor-based logic systems
- Switching power supply feedback loops
Procurement Notes
Verify the manufacturer part number SFH628A-3XG against official Isocom Components documentation to ensure authenticity. Confirm that the component meets RoHS3 compliance requirements if applicable to your assembly process. Check datasheet specifications for moisture sensitivity level and recommended soldering profiles to prevent damage during surface mount or through-hole assembly operations.
Selection Notes
Select this component when high isolation voltage is required for a single-channel application. The 100% minimum current transfer ratio ensures reliable switching performance at low drive currents. The 4-DIP form factor suits designs requiring standard through-hole footprint compatibility without needing specialized surface-mount variants.
Part Context
This part belongs to the SFH628 series of transistor-output optocouplers from Isocom Components. It shares functional similarities with other single-channel isolators but is distinguished by its specific 5300Vrms isolation rating and DIP packaging. The 'XG' suffix typically denotes specific tape-and-reel or bulk packaging configurations within the manufacturer's lineup.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided source material. Cross-reference with generic equivalents like 4N26 only if electrical parameters such as CTR and isolation voltage are verified to match or exceed the SFH628A-3XG specifications.
