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Product Detailed Parameters
- Description：OPTOISOLTR 5.3KV 1CH TRANS 4-SMD
- Series：SFH628A-2
- Mfr：Isocom Components 2004 LTD
- 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)：-
- 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：Surface Mount
- Package / Case：4-SMD, Gull Wing
- Supplier Device Package：4-SMD
- Grade：-
- Qualification：-
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Overview
The SFH628A-2XSM is a surface-mount optocoupler manufactured by Isocom Components 2004 LTD. It features one channel with an NPN silicon phototransistor output and inverse parallel infrared LEDs for AC input capability. The device provides high isolation voltage of 5300Vrms and supports a maximum DC forward current of 50 mA. Key electrical parameters include a collector-emitter saturation voltage of 400mV (max) and a typical rise/fall time of 4µs/3µs. It is housed in a 4-SMD package.
Feature Summary
- Features inverse parallel infrared LEDs enabling direct AC input applications without external rectification.
- Provides robust electrical isolation with a rated voltage of 5300Vrms between input and output circuits.
- Utilizes an NPN silicon phototransistor output for reliable signal transmission in digital logic interfaces.
Applications
- Logic-to-logic isolation in noisy industrial environments
- Line receiver circuits for communication interfaces
- Digital control systems for motors and servo machines
Procurement Notes
Verify the specific suffix '2XSM' against official Isocom documentation to confirm the exact pinout and tape-and-reel specifications. Ensure compatibility with existing PCB footprints, as surface mount variants may differ from through-hole equivalents. Confirm RoHS compliance status if required for your assembly process.
Selection Notes
Select this component when AC input detection is required within a single-channel optocoupler configuration. The inverse parallel LED structure simplifies circuit design by eliminating external diodes. Consider the 5300Vrms isolation rating for safety-critical applications requiring strict galvanic separation between low-voltage control and high-voltage power sections.
Part Context
The SFH628A series represents Isocom's standard line of high-isolation optocouplers designed as industry-standard replacements. This specific model belongs to the transistor output category, offering a balance of speed and isolation performance suitable for general-purpose digital isolation tasks in commercial and industrial equipment.
Replacement Considerations
Direct substitutes include the SFH628A-3XSMT&R and SFH628A-4SMT&R from Isocom, which share similar electrical characteristics but may differ in packaging or lead configuration. Cross-reference with other manufacturers' AC-input optocouplers only if pinouts and isolation ratings are verified to match exactly.
