What are the key electrical ratings?

The device has a nominal varistor voltage of 820V, a maximum AC operating voltage of 510V, and a maximum DC operating voltage of 670V. It can withstand a surge current of 4.5kA.

What applications is this MOV suitable for?

It is ideal for surge protection in consumer electronics, industrial power supplies, and electronic home appliances, as well as relay and electromagnetic valve surge absorption.

What should be considered during design?

Ensure the operating voltage does not exceed the maximum allowable voltage and that the surge energy does not exceed the 157J rating. Proper clearance and creepage distances should be maintained.

What is the pinout of 821KD14?

Use the 821KD14 datasheet for the official pinout diagram and pin names. In PartGenie, ask Datasheet AI about 821KD14 pinout to locate pins, power rails, and interface signals before layout.

821KD14 Datasheet, Specs, Alternatives & ECAD | Yageo

AI summary

The 821KD14 is a 14mm MOV designed for transient voltage protection in industrial and consumer applications, offering an 820V varistor voltage and 4.5kA surge current rating.

Best for

Industrial surge protection
Consumer electronics
Power supply protection

Avoid if

Applications requiring continuous operation above 510VAC
Space-constrained designs where a 14mm disc is too large

Check before use

Peak surge energy requirements
Operating temperature range

Key specifications

Varistor Voltage: 820 V
Max AC Voltage: 510 V
Surge Current: 4.5 kA
Energy Rating: 157 J

Compliance & Environment

RoHS: ROHS3 Compliant
REACH: -
MSL: 1 (Unlimited)
ECCN: EAR99
HTSUS: 8533.40.4000

Application

IndustrialConsumerPower

Datasheet

b9b75ed0027efa0e26bdd9c98666452e_1810170728_Brightking-821KD14_C78361.pdf

800 KB

Datasheet AI

CAD Models

Download ECAD models for 821KD14: KiCad symbol & footprint, Altium footprint, PCB footprint, and 3D model.

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3D Model

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Alternative components

Alternatives are being enriched. Analyze this part in PartGenie for the latest matches.

Design and risk insights

Questions & answers

It is a 14mm diameter Metal Oxide Varistor (MOV) manufactured by Brightking (Yageo), used to protect sensitive electronic components from transient voltage spikes.

AI summary

Best for

Avoid if

Check before use

Key specifications

Compliance & Environment

Application

Datasheet

CAD Models

Where to Buy

Alternative components

Design and risk insights

Questions & answers

What is the 821KD14?+×

What are the key electrical ratings?+×

What applications is this MOV suitable for?+×

What should be considered during design?+×

What is the pinout of 821KD14?+×