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4N33 The 4N33 is an optically coupled isolator featuring a gallium arsenide infrared LED and a silicon photodarlington sensor. It offers high isolation and switching capabilities.
Mfr Part #:

4N33

Available from 3 distributors
Mfr Name: Motorola Semicondutor
Motorola Semicondutor
The 4N33 is an optically coupled isolator featuring a gallium arsenide infrared LED and a silicon photodarlington sensor. It offers high isolation and switching capabilities.
✓ Total Stock: 607 pcs
$ Price Range: $0.99

4N33 Available from 3 distributors

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
NTD Electronics ✓
Non-Authorised Inventory information
358 pcs
On Request
358 pcs On Request 1 On Request On Request On Request On Request On Request
Braun Electronic Components ✓
Non-Authorised Inventory information
209 pcs
On Request
209 pcs On Request 1 On Request On Request On Request On Request On Request
Speed Components Ltd ✓
Non-Authorised Inventory information
40 pcs
On Request
40 pcs On Request 1 On Request On Request 01+ On Request On Request
DistyParts aggregates offers from multiple distributors. Final prices, lead times and terms are subject to the distributors' discretion and may change without prior notice. DistyParts is not liable for any discrepancies.

4N33 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Forward Current
Mounting Type
Power Dissipation
Reverse Voltage
Tape & Reel
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4N33 Description

Short technical summary and product information.

The 4N33 optocoupler from Vishay Semiconductors (listed as Motorola Semiconductor in product data) is designed for high isolation between driving and load circuits. It utilizes a gallium arsenide infrared LED coupled with a silicon photodarlington sensor.

 

Key features include a very high current transfer ratio (CTR) of 500% minimum and high isolation resistance of 10^11 Ω typical. The device operates with a maximum forward current of 60 mA and a maximum power dissipation of 100 mW.

 

This optocoupler is suitable for replacing reed and mercury relays, offering advantages such as long life and high-speed switching. It is housed in a standard plastic DIP-6 package, designed for through-hole mounting.

 

Agency approvals include UL 1577, cUL, DIN EN 60747-5-5 (VDE 0884-5), and FIMKO, indicating its suitability for various safety-critical applications.

4N33 Quick Information

Product Type: Optocoupler
Canonical Name: 4N33 Photodarlington Optocoupler
Subcategory: Photodarlington Output

4N33 Compliance

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

4N33 Estimated Pricing

Qty Low High
1+ $0.99 $0.99

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

4N33 Features

  • Very high current transfer ratio, 500% minimum.
  • High isolation resistance, 10^11 Ohm typical.
  • Gallium arsenide infrared LED and silicon photodarlington sensor.
  • Standard plastic DIP-6 package for through-hole mounting.
  • UL, cUL, VDE, and FIMKO agency approvals.

4N33 Applications

  • Replaces reed and mercury relays.
  • Provides high degree of circuit isolation.
  • Enables high-speed switching applications.
  • Eliminates magnetic field interference.

4N33 FAQs

5 frequently asked questions generated from this part’s specifications.
What is the package type of the 4N33?

The 4N33 comes in a DIP-6 package.

What is the minimum current transfer ratio of the 4N33?

The minimum current transfer ratio is 500%.

What is the maximum reverse voltage of the 4N33?

The maximum reverse voltage is 3V.

What is the maximum forward current of the 4N33?

The maximum forward current is 60mA.

Is the 4N33 RoHS compliant?

Yes, it is RoHS3 compliant, although this status is unverified.

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