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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)：160% @ 10mA
- Current Transfer Ratio (Max)：320% @ 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-4G is a single-channel transistor output optocoupler manufactured by Isocom Components. It integrates an infrared emitting diode with an NPN silicon phototransistor in a 4-pin PDIP package. Key electrical parameters include a maximum collector-emitter voltage of 70 V, a peak forward current of 50 mA, and an isolation voltage of 4470 Vrms. The device features a minimum current transfer ratio of 160% and operates within a temperature range of -30°C to 100°C.
Feature Summary
- Integrates an infrared LED with an NPN silicon phototransistor for signal isolation
- Provides high-voltage electrical isolation between input and output circuits
- Utilizes a standard 4-pin through-hole PDIP package for easy PCB integration
Applications
- General-purpose signal isolation in industrial control systems
- Interface circuits for microcontrollers and logic gates
- Power supply feedback loops and monitoring
Procurement Notes
Verify the specific manufacturer designation when sourcing, as this component is also distributed under Vishay branding (SFH617A-4). Confirm that the supplier provides documentation from Isocom Components 2004 LTD or an authorized distributor. Ensure the part number suffix matches the required packaging configuration. Request datasheets to confirm compliance with relevant safety standards before finalizing procurement orders.
Selection Notes
Select this component for applications requiring moderate speed and high isolation voltage in a compact form factor. Consider the 160% minimum CTR for reliable switching at low drive currents. Evaluate the thermal operating range against environmental conditions. Compare alternative pin-compatible devices if supply chain constraints exist, ensuring equivalent electrical ratings are maintained.
Part Context
This device belongs to the SFH617A series of transistor output optocouplers. It is functionally similar to other variants in the family, such as the SFH617A-2X and SFH617A-3, differing primarily in packaging or minor electrical tolerances. The component serves as a standard solution for galvanic isolation in digital communication and power control interfaces.
