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Product Detailed Parameters
- Description：OPTOISOLATOR 5KV 1CH TRANS 4-DIP
- Series：SFH618A-2
- Mfr：Isocom Components 2004 LTD
- Package：Tube
- 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：Through Hole
- Package / Case：4-DIP (0.300", 7.62mm)
- Supplier Device Package：4-DIP
- Grade：-
- Qualification：-
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Overview
The SFH618A-2X is a single-channel optoisolator manufactured by Isocom Components 2004 LTD. It integrates an infrared LED with an NPN silicon phototransistor in a compact 4-DIP package. The device provides electrical isolation of 5000Vrms (5.3kV) between input and output circuits. Key electrical parameters include a collector-emitter voltage of 70V, a maximum forward current of 50mA, and a current transfer ratio of 32%. It is designed for through-hole mounting.
Feature Summary
- Combines an infrared emitting diode with an NPN silicon phototransistor for signal transmission
- Provides high-voltage electrical isolation between input and output sides
- Utilizes a space-efficient dual in-line package for standard PCB integration
Applications
- General purpose signal isolation in electronic circuits
- Interface applications requiring galvanic separation
- Switching circuits utilizing transistor output characteristics
Procurement Notes
Verify the manufacturer designation as Isocom Components 2004 LTD when sourcing this component. Confirm the specific suffix -2X corresponds to the required packaging and pin configuration. Ensure that the 5.3kV isolation rating meets the safety requirements of the target application environment before procurement.
Selection Notes
Select this component when a single-channel transistor output isolator is required. Consider the 70V collector-emitter voltage limit for switching applications. The 32% current transfer ratio should be evaluated against drive requirements. The 4-DIP form factor suits through-hole assembly processes.
Part Context
This part belongs to the SFH618 series of optically coupled isolators. The series typically includes variants with different current transfer ratios and packaging options. The SFH618A-2X specifically denotes the version with defined electrical characteristics and a 4-pin DIP housing.
Replacement Considerations
Cross-reference with other single-channel transistor output optocouplers offering similar 5kV isolation ratings. Verify compatibility of pinout, voltage limits, and current transfer ratios before substitution.
