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Product Detailed Parameters
- Description：OPTOISO 4.47KV 1CH TRANS 4-SMD
- Series：SFH617A
- Mfr：Isocom Components 2004 LTD
- Package：Tape & Reel (TR)
- Number of Channels：1
- Voltage - Isolation：4470Vrms
- Current Transfer Ratio (Min)：40% @ 10mA
- Current Transfer Ratio (Max)：80% @ 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：Surface Mount
- Package / Case：4-SMD, Gull Wing
- Supplier Device Package：4-SMD
- Grade：-
- Qualification：-
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Overview
The SFH617A-1SMT&R is a single-channel transistor output optocoupler manufactured by Isocom Components 2004 LTD. It features a surface mount plastic package with four pins, designed for compact circuit integration. The device provides an isolation voltage of 5.3 kVrms between input and output circuits. It supports a maximum forward current of 50 mA and offers a minimum current transfer ratio of 40%. This component is engineered for reliable signal transmission across isolated domains.
Feature Summary
- Provides galvanic isolation via infrared LED and phototransistor architecture
- Utilizes a surface-mount plastic package for automated PCB assembly
- Ensures high dielectric strength between input and output terminals
Applications
- Signal isolation in industrial control systems
- Interface circuits for microcontroller-based designs
- Power supply feedback loops requiring electrical separation
Procurement Notes
Verify the specific manufacturer designation on the component marking to confirm it originates from Isocom Components 2004 LTD. Ensure the ordering suffix matches the required tape and reel configuration if automated placement is intended. Cross-reference the datasheet specifications against your design requirements to confirm compatibility with voltage and current limits.
Selection Notes
Select this component when a surface-mount solution is required for single-channel isolation. Consider the 5.3 kVrms isolation rating for safety-critical applications. Evaluate the 40% minimum current transfer ratio to ensure adequate signal coupling for the load requirements. Confirm that the 4-pin SMD footprint fits the available board space constraints.
Part Context
This part belongs to the SFH617A series of transistor output optocouplers. It serves as a surface-mount variant within the broader family of optical isolators. The series is characterized by its use of an infrared emitting diode coupled to a silicon phototransistor. This configuration allows for efficient signal transfer while maintaining electrical separation between circuits.
