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4N31 The 4N31 is an optocoupler from Fairchild Semiconductor. It features a gallium arsenide infrared emitter coupled to a silicon planar photodarlington.
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4N31

Available from 1 distributors
Mfr Name: On Semiconductor
On Semiconductor
The 4N31 is an optocoupler from Fairchild Semiconductor. It features a gallium arsenide infrared emitter coupled to a silicon planar photodarlington.
✓ Total Stock: 118 pcs
$ Price Range: $0.99

4N31 Available from 1 distributor

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✓ Non-Authorised
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Braun Electronic Components ✓
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118 pcs
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4N31 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Channels
Forward Current
Forward Voltage
Lead Spacing
Lead Style
Mounting Type
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4N31 Description

Short technical summary and product information.

The 4N31 optocoupler from Fairchild Semiconductor is designed for general-purpose isolation applications. It comprises a gallium arsenide infrared emitter optically coupled to a silicon planar photodarlington.

 

Key electrical specifications include a forward current of 80mA and a forward voltage of 1.5V. The device offers a high isolation voltage of 5300Vrms, making it suitable for applications requiring robust electrical separation. It operates within a temperature range of -55°C to 100°C and has a maximum power dissipation of 150mW.

 

This optocoupler is housed in a standard 6-pin DIP package and is designed for through-hole mounting. Its construction ensures reliable signal isolation in various electronic circuits.

4N31 Quick Information

Product Type: Optocoupler
Canonical Name: 4N31 Optocoupler
Subcategory: Photodarlington Output

4N31 Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

4N31 Estimated Pricing

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1+ $0.99 $0.99

Estimated market price range - modelled values for guidance only, not live distributor offers.

4N31 Features

  • High isolation voltage of 5300Vrms.
  • 80mA forward current capability.
  • Wide operating temperature range.
  • General purpose photodarlington output.
  • Standard 6-pin DIP through-hole package.

4N31 Applications

  • Provides electrical isolation between circuits.
  • Suitable for power supply control.
  • Used in signal transmission systems.
  • Applicable in industrial automation.

4N31 FAQs

7 frequently asked questions generated from this part’s specifications.
What is the isolation voltage of the 4N31?

5300 Vrms.

What is the forward current rating?

80 mA.

What is the forward voltage?

1.5 V.

How many channels does it have?

1 channel.

What is the operating temperature range?

-55°C to 100°C.

What is the package type?

6-DIP through hole.

What is the maximum power dissipation?

150 mW.

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