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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 (0.300", 7.62mm)
- Supplier Device Package：4-DIP
- Grade：-
- Qualification：-
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Overview
The SFH617A-4X is a single-channel transistor output optocoupler manufactured by Isocom Components 2004 LTD. It integrates an infrared emitting diode and an NPN silicon phototransistor within a 4-pin DIP package. The device provides electrical isolation with an insulation voltage of 5300 Vrms. Key electrical parameters include a maximum collector-emitter voltage of 80 V, a collector current rating of 50 mA, and a forward current capacity of 60 mA. The current transfer ratio ranges from 160% to 320%, with typical rise and fall times of 4.6 µs and 15 µs respectively. Operating temperatures span from -55°C to +110°C.
Feature Summary
- Provides galvanic isolation between input and output circuits using infrared light transmission.
- Features a standard NPN phototransistor output suitable for logic interfacing.
- Designed for through-hole mounting in compact 4-pin DIP configurations.
Applications
- Logic-to-logic isolation in noisy environments
- Line receiver circuits
- Computer and peripheral device interfaces
Procurement Notes
Verify the manufacturer designation carefully, as Vishay Semiconductors also produces equivalent part numbers such as VO617A-4X016 and SFH617A-4. Confirm that the specific suffix indicates the Isocom Components 2004 LTD variant rather than the Vishay version. Ensure the required insulation voltage and current transfer ratio specifications align with the design requirements before procurement.
Selection Notes
Select this component when high isolation voltage is required for single-channel signal transmission. The NPN phototransistor output is appropriate for digital switching applications. Consider the operating temperature range and package type for compatibility with existing PCB layouts. Verify current transfer ratio requirements against the specified minimum and maximum values.
Part Context
This component belongs to the SFH617A series of transistor output optocouplers. The series includes variants with different pin counts and packaging options, such as SFH617A-1, SFH617A-2, SFH617A-3, and their respective X-suffixed versions. These devices are designed as industry-standard replacements for other manufacturers' optocouplers.
Replacement Considerations
Public confirmed substitute part numbers include VO617A-4X016 and SFH617A-4 from Vishay Semiconductors. These alternatives share similar electrical characteristics and pin configurations but may differ in manufacturing origin and specific parameter tolerances.
