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Product Detailed Parameters
- Description：OPTOISO 4.47KV 1CH TRANS 4-DIP
- Series：SFH617A
- Mfr：Isocom Components 2004 LTD
- Package：Tube
- Number of Channels：1
- Voltage - Isolation：4470Vrms
- Current Transfer Ratio (Min)：100% @ 10mA
- Current Transfer Ratio (Max)：200% @ 10mA
- Turn On / Turn Off Time (Typ)：-
- Rise / Fall Time (Typ)：4µs, 3µs
- Input Type：DC
- Output Type：Transistor
- Voltage - Output (Max)：70V
- Current - Output / Channel：50mA
- Voltage - Forward (Vf) (Typ)：1.65V (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 SFH617A-3XG is a single-channel optocoupler featuring an infrared LED and NPN silicon phototransistor. It offers high isolation voltage of 5300Vrms with a peak value of 7500V. The device supports a maximum forward current of 50mA and input current up to 60mA. Current transfer ratio ranges from 100% to 200%. Typical switching times include a rise time of 2µs and fall time of 14µs. It operates within a temperature range of -55°C to 110°C and utilizes a 4-pin PDIP package.
Feature Summary
- Provides galvanic isolation between input and output circuits using infrared light transmission.
- Features high dielectric strength for safe operation in high-voltage environments.
- Designed for low input current requirements to enhance energy efficiency.
- Utilizes NPN silicon phototransistor output for reliable signal switching.
Applications
- Industrial control systems requiring signal isolation
- Power supply feedback loops
- Communication interface isolation
- Microcontroller input/output protection
Procurement Notes
Verify the specific suffix 'XG' against official Isocom Components documentation to confirm packaging and compliance details. Ensure the procurement source provides valid UL, IEC, and VDE certification records corresponding to this part number. Cross-reference the manufacturer's latest datasheet to confirm active status and any potential obsolescence notices before finalizing orders.
Selection Notes
Select this component when high isolation voltage and fast switching speeds are required for digital signal transmission. Consider the 100-200% current transfer ratio for driving standard logic inputs. Evaluate the 4-pin DIP package constraints for PCB layout. Compare against similar models like SFH617A-2X if different pin configurations or slightly varied electrical characteristics better suit the specific circuit design requirements.
Part Context
This part belongs to the SFH series of low input current phototransistor optically coupled isolators manufactured by Isocom Components. It is functionally related to variants such as SFH617A-3G and SFH617A-3X, which share similar core electrical specifications but may differ in packaging or regulatory certifications. The series is designed for general-purpose isolation applications.
Replacement Considerations
The SFH617A-3G is identified as a direct parametric equivalent part number. Both components are manufactured by Isocom Components 2004 LTD and maintain active product status. Verify pinout compatibility and insulation clearance distances when substituting to ensure mechanical and electrical integrity in the existing assembly.
