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Product Detailed Parameters
- Description：OPTOISO 5.3KV DARL W/BASE 6-DIP
- Series：-
- Mfr：onsemi
- Package：Tube
- Number of Channels：1
- Voltage - Isolation：5300Vrms
- Current Transfer Ratio (Min)：50% @ 10mA
- Current Transfer Ratio (Max)：-
- Turn On / Turn Off Time (Typ)：5µs, 40µs (Max)
- Rise / Fall Time (Typ)：-
- Input Type：DC
- Output Type：Darlington with Base
- Voltage - Output (Max)：30V
- Current - Output / Channel：150mA
- Voltage - Forward (Vf) (Typ)：1.2V
- Current - DC Forward (If) (Max)：80 mA
- Vce Saturation (Max)：1.2V
- Operating Temperature：-55°C ~ 100°C
- Mounting Type：Through Hole
- Package / Case：6-DIP (0.300", 7.62mm)
- Supplier Device Package：6-DIP
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Overview
The onsemi 4N31 is a single-channel optocoupler featuring a GaAs infrared emitting diode paired with a Darlington transistor output. It provides high isolation voltage of 5300Vrms and supports DC input signals. The device operates within a temperature range of -55°C to 100°C, ensuring reliability in harsh environments. Key electrical parameters include a maximum collector-emitter saturation voltage of 1.2V and a minimum current transfer ratio of 50% at 10mA forward current. It is housed in a 6-DIP package for through-hole mounting.
Feature Summary
- High isolation voltage capability of 5300Vrms for safe signal transmission between isolated circuits
- Darlington transistor output configuration providing high current gain and sensitivity
- Wide operating temperature range suitable for industrial and automotive applications
Applications
- Industrial control systems requiring galvanic isolation
- Signal transmission across isolated ground planes
- Solid-state relay driver circuits
Procurement Notes
Verify the specific suffix (e.g., M) as the base part number may have variants. Confirm package type matches design requirements. Check datasheet for updated thermal and electrical limits. Ensure compliance with relevant safety standards if used in certified equipment. Validate supplier authenticity due to discontinued status.
Selection Notes
Select this component when high isolation voltage and robust output drive are required. Consider the slow switching speed compared to logic outputs. Evaluate thermal management needs based on power dissipation limits. Compare with newer alternatives if space or speed constraints exist.
Part Context
The 4N31 belongs to the legacy 4N29-33 series of optocouplers from onsemi. These devices are widely recognized for their reliability in general-purpose isolation applications. The series utilizes proprietary process technology for consistent performance. Although older, they remain referenced in many existing designs.
Replacement Considerations
Public confirmed substitutes include 4N30M and 4N33M from onsemi. Verify pinout compatibility and electrical specifications before substitution. Ensure the replacement meets all original design requirements.
