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Product Detailed Parameters
- Description：OPTOISOLTR 5.3KV 1CH TRANS 4-DIP
- Series：SFH618A-4
- Mfr：Isocom Components 2004 LTD
- Package：Tube
- Number of Channels：1
- Voltage - Isolation：5300Vrms
- Current Transfer Ratio (Min)：160% @ 1mA
- Current Transfer Ratio (Max)：320% @ 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：Through Hole
- Package / Case：4-DIP (0.400", 10.16mm)
- Supplier Device Package：4-DIP
- Grade：-
- Qualification：-
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Overview
The SFH618A-4XG is a single-channel optocoupler featuring an infrared LED and NPN silicon phototransistor in a DIP-4 package. It offers a minimum collector-emitter breakdown voltage of 55V and a high isolation voltage of 5.3kVrms. The device supports low input current operation with a typical forward voltage of 1.5V at 5mA. Current transfer ratios range from 63% to 320% at 1mA, ensuring reliable signal transmission between systems with different potentials.
Feature Summary
- Integrates an infrared emitting diode with an NPN silicon phototransistor for optical isolation
- Provides high isolation voltage capability suitable for separating circuits with different potentials
- Designed for low input current operation to enhance energy efficiency
- Delivers high current transfer ratios across specified operating conditions
Applications
- Computer terminals
- Industrial system controllers
- Measuring instruments
- Signal transmission between systems of different potentials and impedances
Procurement Notes
Verify the specific suffix 'XG' confirms the required lead spread or packaging configuration as defined by Isocom Components. Ensure the component meets UL recognition File No. E91231 and pending VDE 0884 approval if regulatory compliance is mandatory for your application. Cross-reference the exact part number against official datasheets to confirm electrical parameters match design requirements before procurement.
Selection Notes
Select this component when low input current drive is necessary alongside high isolation requirements. The DIP-4 package suits through-hole mounting for general-purpose isolation tasks. Consider the 55V BVCEO rating for output circuit compatibility. Verify that the 1-channel configuration aligns with system architecture needs compared to multi-channel alternatives.
Part Context
This part belongs to the SFH618A series of low input current phototransistor optically coupled isolators. The series includes variants with different lead spreads and surface mount options. The 'XG' suffix typically denotes specific mechanical or packaging attributes within the Isocom product line, distinguishing it from standard DIP or SMT versions.
Replacement Considerations
Direct substitutes include other SFH618A series variants such as SFH618A-2XG or SFH618A-3XG, which share identical electrical characteristics but differ in lead spread or packaging style. Generic equivalents may exist but require verification of isolation voltage and current transfer ratio specifications.
