Metal Oxide Varistor MOV 10D391K 390V 10mm
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Prices updated: 14 Oct 2026
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About this product
The 10D391K is a 10 mm metal oxide varistor (MOV) with a 390 V varistor voltage (code 391, ±10% tolerance). It clamps voltage surges and transients in electronic circuits and is placed across the line it protects, typically with a fuse for added safety.
Specifications
- Model
- 10D391K
- Varistor voltage (code 391)
- 390 V
- Tolerance (K)
- ±10%
- Disc diameter (10D)
- 10 mm
- Lead length
- 2.8 cm
Frequently asked questions
How is it different from the 7D471K?
Both are metal oxide varistors. The 10D391K has a 10 mm disc and 390 V varistor voltage, while the 7D471K has a 7 mm disc and 470 V. Choose by the voltage level and surge energy your circuit needs, and check the AC and DC ratings in the datasheet.
Can it be used on 220 V mains?
A 390 V varistor voltage is used in many 220 V mains protection designs, but the listing does not state the maximum AC or DC continuous ratings. Confirm these in the datasheet before using it on mains.
