820543011 The 820543011 is a 14mm disk varistor from Würth Elektronik, rated for 300V AC and 385V DC operation. It offers a peak pulse current of 4.5kA and energy absorption of 140J.
Mfr Part #:

820543011

Available from 2 distributors
Mfr Name: Würth Elektronik
Würth Elektronik
The 820543011 is a 14mm disk varistor from Würth Elektronik, rated for 300V AC and 385V DC operation. It offers a peak pulse current of 4.5kA and energy absorption of 140J.
✓ Total Stock: 16,126 pcs
$ Price Range: $0.48 - $0.75

820543011 Available from 2 distributors

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Non-Authorised Inventory information
15,576 pcs
15576 pcs On Request 1 On Request On Request On Request On Request On Request
Non-Authorised Inventory information
550 pcs
550 pcs On Request 1 On Request On Request On Request On Request On Request

820543011 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
AEC Qualified
Automotive Grade
Capacitance
Capacitance @ Frequency
Current
Energy
Halogen Free
Industrial Grade
Lead Spacing
Maximum AC Volts
Maximum DC Volts
Medical Grade
Military Grade
Mounting Type
Number of Circuits
Operating Temperature
Package / Case
Power Dissipation
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Tape & Reel
Varistor Voltage (Max)
Varistor Voltage (Min)
Varistor Voltage (Typ)

820543011 Description

Short technical summary and product information.

The Würth Elektronik 820543011 is a 14mm disk varistor from the WE-VD series, designed for overvoltage protection in AC and DC circuits. It provides reliable clamping of transient voltages with a varistor voltage of 470V ±10% at 1 mA and a maximum clamping voltage of 775V at 50 A.

 

Key electrical specifications include a maximum AC operating voltage of 300V RMS, maximum DC voltage of 385V, a peak pulse current rating of 4.5 kA (8/20 µs), and energy absorption capability of 140 J (10/1000 µs). The device also features a typical capacitance of 420 pF at 1 kHz and a maximum power dissipation of 0.6 W.

 

The varistor is housed in a 14mm disc package with through-hole mounting and lead spacing of 7.5 mm. It operates over a temperature range of -40°C to +85°C and is rated MSL 1 (unlimited).

 

Compliance includes RoHS3, REACH, and Halogen Free certifications. The component is also approved by VDE and cULus (UL1449), making it suitable for a wide range of industrial and consumer applications.

820543011 Quick Information

Product Type: Varistor / MOV
Series: WE-VD
Canonical Name: Würth Elektronik 820543011 WE-VD Disk Varistor, 14mm, 300V AC, 385V DC
Subcategory: Metal Oxide Varistor

820543011 Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 75
REACH Status: REACh Conform or declared
Lead Free: Yes

820543011 Estimated Pricing

Qty Low High
1+ $0.75 $0.75
10+ $0.70 $0.70
50+ $0.64 $0.64
100+ $0.58 $0.58
500+ $0.53 $0.53
750+ $0.48 $0.48

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

820543011 Features

  • 300V AC / 385V DC operating voltage.
  • 4.5kA peak pulse current capability.
  • 140J energy absorption rating.
  • Through-hole 14mm disc package.
  • RoHS3 and Halogen Free compliant.

820543011 Applications

  • Used for overvoltage protection in AC power lines.
  • Suitable for surge protection in DC power supplies.
  • Ideal for industrial equipment and consumer electronics.
  • Protects against transient voltage spikes in telecom systems.

820543011 FAQs

7 frequently asked questions generated from this part’s specifications.
What is the maximum continuous operating voltage for the 820543011?

The maximum AC operating voltage is 300 V RMS and the maximum DC operating voltage is 385 V.

What is the breakdown voltage (varistor voltage) of this part?

The varistor voltage at 1 mA is 470 V typical, with a range of 423 V to 517 V.

What is the clamping voltage of the 820543011?

The maximum clamping voltage is 775 V at a test current of 50 A (8/20 µs).

What is the peak pulse current rating?

The peak pulse current is 4.5 kA (8/20 µs).

What is the package type and mounting style?

The package is a 14mm disc with through-hole mounting and lead spacing of 7.5 mm.

What is the energy absorption capability?

The device can absorb up to 140 J under a 10/1000 µs pulse.

What is the operating temperature range?

The operating temperature range is -40°C to +85°C.

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