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Product Detailed Parameters
- Description：OPTOISOLATOR 5KV 1CH TRANS 4-SMD
- Series：SFH618A-2
- Mfr：Isocom Components 2004 LTD
- Package：Tape & Reel (TR)
- Number of Channels：1
- Voltage - Isolation：5000Vrms
- Current Transfer Ratio (Min)：63% @ 1mA
- Current Transfer Ratio (Max)：125% @ 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-2XSMT&R is a surface-mount transistor output optocoupler manufactured by Isocom Components 2004 LTD. It features one channel with an infrared LED input and NPN silicon phototransistor output. Key electrical specifications include a 5300Vrms isolation voltage, a minimum current transfer ratio of 63% at 1mA forward current, and a collector-emitter breakdown voltage (BVCEO) of 55V minimum. The device operates within a temperature range of -40°C to +100°C and is supplied in a 4-SMD package.
Feature Summary
- Low input current requirement for efficient drive
- High isolation voltage capability for safety
- High current transfer ratios for signal integrity
Applications
- Computer terminals
- Industrial systems controllers
- Measuring instruments
- Signal transmission between systems of different potentials and impedances
Procurement Notes
Verify the manufacturer designation carefully, as the part number indicates Isocom Components 2004 LTD, which may act as a distributor or rebranding entity for the original Vishay/SFH design. Confirm RoHS compliance status and lead-free certification through official documentation before procurement. Ensure the surface mount tape and reel packaging matches production line requirements. Check for any specific handling instructions related to the SMD package type.
Selection Notes
Select this component when low input current operation is required to minimize power consumption in the driving circuit. The high current transfer ratio ensures reliable switching even at low drive currents. The surface mount package facilitates automated assembly and compact board designs. Verify that the 55V BVCEO meets the load voltage requirements of the application circuit.
Part Context
This component belongs to the SFH618A series of low input current phototransistor optically coupled isolators. The series includes variants with different lead spreads and packaging options, such as DIP and surface mount configurations. The 'SMT&R' suffix denotes the surface mount tape and reel packaging format, distinguishing it from standard DIP versions.
Replacement Considerations
Direct substitutes include other SFH618A series variants like SFH618A-2-G for DIP packages. Cross-reference with Vishay datasheets for equivalent performance characteristics. Ensure pinout compatibility and thermal management requirements are met when substituting.
