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VDR-20D221K AI Analysis:
Datasheet, Specs, Alternatives & ECAD

AI summary

VDR-20D221K product

VDR-20D221K

Component

MOVvaristor20D140 VAC180 VDCsurge protectionthrough-hole

VDR-20D221K is a 20 mm radial MOV for suppressing transient overvoltage on circuits up to 140 VAC or 180 VDC. It has a 198–242 V varistor voltage and clamps to 360 V maximum at a 100 A 8/20 µs surge.

Best for

  • General-purpose AC or DC transient suppression within 140 VAC or 180 VDC continuous limits
  • Through-hole surge protection where a 20 mm radial disc MOV is acceptable

Avoid if

  • The circuit requires lower clamping voltage than 360 V at 100 A
  • Expected surge current or energy exceeds the stated ratings
  • The installation cannot provide suitable overload or thermal protection

Check before use

  • Verify actual surge waveform and pulse repetition against the datasheet limits
  • Check voltage derating above +125 °C
  • Assess fuse or disconnect protection for MOV end-of-life failure

Key specifications

Continuous voltage
140 VAC / 180 VDC
Varistor voltage
198–242 V at 1 mA DC
Maximum clamping voltage
360 V at 100 A, 8/20 µs
Surge current
6500 A, 8/20 µs, 1 pulse
Maximum energy
100 J, 10/1000 µs
Operating temperature
-40 °C to +125 °C

Compliance & Environment

RoHS
Compliant
REACH
-
MSL
-
ECCN
-
HTSUS
-

Application

AC power-input surge suppressionIndustrial transient protectionGeneral through-hole protection circuits

Datasheet

9aa53370461183149ddf5d695922953e_VDR-20D221K.pdf

800 KB

Datasheet AI

CAD Models

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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

VDR-20D221K is a two-lead, radial zinc-oxide metal-oxide varistor (MOV). It is a 20D disc part with 10.0 mm nominal lead spacing and a 198–242 V varistor-voltage range measured at 1 mA DC.