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Product Detailed Parameters
- Description：OPTOISOLTR 5.3KV 1CH TRANS 4-DIP
- Series：SFH618A-2
- Mfr：Isocom Components 2004 LTD
- Package：Tube
- Number of Channels：1
- Voltage - Isolation：5300Vrms
- Current Transfer Ratio (Min)：63% @ 1mA
- Current Transfer Ratio (Max)：125% @ 1mA
- Turn On / Turn Off Time (Typ)：6µs, 5.5µs
- Rise / Fall Time (Typ)：3.5µs, 5µs
- Input Type：DC
- Output Type：Transistor
- Voltage - Output (Max)：55V
- Current - Output / Channel：-
- Voltage - Forward (Vf) (Typ)：1.5V
- Current - DC Forward (If) (Max)：50 mA
- Vce Saturation (Max)：400mV
- Operating Temperature：-55°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-2G is a single-channel optocoupler featuring an infrared LED and NPN silicon phototransistor in a DIP-4 package. It offers high isolation voltage of 5.3kV RMS and 7.5kV peak, with a minimum collector-emitter breakdown voltage of 55V. The device supports low input current operation at 0.5mA, providing a minimum current transfer ratio of 32%. All electrical parameters are 100% tested to ensure reliability.
Feature Summary
- Combines infrared light emitting diode with NPN silicon phototransistor for signal isolation
- Provides high isolation voltage capability between input and output circuits
- Designed for low input current operation to enhance energy efficiency
- Ensures consistent performance through comprehensive electrical parameter testing
Applications
- Computer terminals
- Industrial systems controllers
- Measuring instruments
- Signal transmission between systems of different potentials and impedances
Procurement Notes
Verify the specific suffix 'G' indicates the 10mm lead spread option as documented in official specifications. Confirm UL recognition file number E91231 and pending VDE 0884 approval status align with project requirements. Ensure the component matches the standard DIP-4 plastic package dimensions. Cross-reference the manufacturer part number with authorized distributor catalogs to validate authenticity and compliance with RoHS standards before finalizing procurement orders.
Selection Notes
Select this component when low input current drive is required alongside high isolation voltage. The NPN phototransistor output suits applications needing digital switching or analog signal coupling. Consider the DIP-4 package for through-hole mounting constraints. Evaluate the current transfer ratio range against load requirements. Verify that the 55V breakdown voltage meets the circuit's maximum operating potential limits.
Part Context
The SFH618A-2G belongs to the SFH618A series of low input current phototransistor optically coupled isolators. This family includes variants like SFH618A-3 and SFH618A-4, differing primarily in lead spread options or surface mount configurations. The series is characterized by space-efficient dual in-line plastic packages and robust isolation capabilities for industrial and computer applications.
Replacement Considerations
Direct substitutes within the same series include SFH618A-2X or SFH618A-2SM, depending on lead spread or surface mount needs. Verify pinout compatibility and electrical parameters match before substitution. Consult official datasheets for dimensional differences between DIP and SMT versions.
