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Product Detailed Parameters
- Description：OPTOISOLTR 5.3KV 1CH DARL 6-DIP
- Series：4N31
- Mfr：Isocom Components 2004 LTD
- Package：Tube
- Number of Channels：1
- Voltage - Isolation：5300Vrms
- Current Transfer Ratio (Min)：-
- Current Transfer Ratio (Max)：-
- Turn On / Turn Off Time (Typ)：-
- Rise / Fall Time (Typ)：60µs, 53µs
- Input Type：DC
- Output Type：Darlington
- Voltage - Output (Max)：80V
- Current - Output / Channel：80mA
- Voltage - Forward (Vf) (Typ)：1.2V
- Current - DC Forward (If) (Max)：50 mA
- Vce Saturation (Max)：1.2V
- Operating Temperature：-25°C ~ 100°C
- Mounting Type：Through Hole
- Package / Case：6-DIP (0.300", 7.62mm)
- Supplier Device Package：6-DIP
- Grade：-
- Qualification：-
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Overview
The 4N31F is a single-channel optocoupler manufactured by Isocom Components 2004 LTD. It features an infrared LED input and a photodarlington output, housed in a standard 6-pin DIP package. The device provides electrical isolation with a rated voltage of 5300Vrms. Key electrical characteristics include a minimum current transfer ratio of 20% at an input current of 10mA. Typical switching times are specified as 3 microseconds for rise time and 5 microseconds for fall time.
Feature Summary
- Photodarlington output configuration for high gain
- Standard 6-pin dual in-line package design
- High isolation voltage rating for safety applications
Applications
- Industrial control systems
- Signal isolation circuits
- Microprocessor interface circuits
Procurement Notes
Verify the specific datasheet version from Isocom Components 2004 LTD to confirm exact electrical tolerances and mechanical dimensions. Ensure compatibility with existing PCB footprints and thermal management requirements before finalizing procurement decisions.
Selection Notes
Select this component when high gain is required due to the photodarlington output structure. Consider the slower switching speed compared to standard phototransistors when designing for high-frequency signal transmission applications.
Part Context
This part belongs to the standard 4N3x series of optocouplers, widely used for general-purpose isolation. It shares similar pinouts and form factors with other industry-standard devices, facilitating direct replacement in legacy designs requiring galvanic isolation.
Replacement Considerations
- 4N32
- 4N33
- PC817
FAQ
What is the typical current transfer ratio?
The minimum current transfer ratio is 20% at an input forward current of 10mA.
Does this device have a base lead?
No, the 4N31F is a non-base lead device with only four pins dedicated to the LED and Darlington pair connections.
