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Product Detailed Parameters
- Description：OPTOISOLTR 5.3KV 1CH TRANS 4-SMD
- Series：SFH618A-3
- Mfr：Isocom Components 2004 LTD
- Package：Tube
- Number of Channels：1
- Voltage - Isolation：5300Vrms
- Current Transfer Ratio (Min)：100% @ 1mA
- Current Transfer Ratio (Max)：200% @ 1mA
- Turn On / Turn Off Time (Typ)：-
- Rise / Fall Time (Typ)：4µs, 3µs
- Input Type：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 SFH618A-3XSM is a single-channel optocoupler manufactured by Isocom Components 2004 LTD. It integrates an infrared LED with an NPN silicon phototransistor in a surface-mount package. The device provides electrical isolation with a rated insulation voltage of 5 kVrms and a collector-emitter voltage of 55 V. Key electrical parameters include a maximum forward current of 50 mA, a forward voltage of 1.5 V, and a reverse breakdown voltage of 6 V. Power dissipation is specified at 0.2 W.
Feature Summary
- Integrates an infrared light emitting diode and an NPN silicon photo transistor for signal transmission.
- Provides high-voltage electrical isolation between input and output circuits.
- Designed for space-efficient surface-mount applications.
Applications
- Logic-to-logic isolators in noisy environments
- Line receivers
- Computer and peripheral device interfaces
Procurement Notes
Verify the specific suffix '3XSM' against official Isocom documentation to confirm the exact pin configuration and tape-and-reel specifications. Ensure the component meets required safety certifications such as UL or VDE for the intended application environment. Cross-reference datasheet parameters like CTR and isolation voltage with system requirements before finalizing procurement.
Selection Notes
Select this component when a single-channel transistor output optocoupler with surface-mount packaging is required. Consider the 5 kVrms isolation rating and 55 V collector-emitter voltage limits. Evaluate the 50 mA forward current capability against drive circuit constraints. Compare against standard industry equivalents if supply chain flexibility is needed.
Part Context
The SFH618 series consists of optically coupled isolators featuring infrared LEDs and NPN silicon phototransistors. These devices are designed for general-purpose isolation tasks. The SFH618A-3XSM variant specifically utilizes a surface-mount form factor, offering a compact solution for modern electronic assemblies requiring reliable signal transfer across isolated boundaries.
Replacement Considerations
Isocom offers alternative models within the SFH618 series and other product lines that may serve as substitutes. Verify compatibility regarding pinout, package dimensions, and electrical characteristics when considering cross-references to ensure seamless integration into existing designs.
