Ceramic Varistors F Series Developed - Smaller size and higher current achieved

Nov. 29, 2021

Press Release

Nippon Chemi-Con Corporation
October 5, 2021
Ceramic Varistors F Series Developed
Smaller size and higher current achieved
Nippon Chemi-Con has newly developed the F Series, a downsized and higher current version of the existing disc type ceramic varistors V Series.

In recent years, power supply boards for general purpose home appliances and inverter boards for industrial equipment are becoming smaller. These products contain many of our ceramic varistors and we have been receiving requests for downsized products while maintaining surge performance.
To meet these demands, we achieved downsizing of the V Series through optimization of the element composition and internal structure. The F Series has a maximum of approximately 30% higher surge current compared to same size products of the existing Series. Comparing products with the same surge performance, the mounting surface area of substrates can be reduced by up to 22%.

[Comparison of Downsizing]
Existing size   New size   Comparison to exisiting
⌀14/V Series ⌀11/F Series   Approx. 13% downsized
⌀20/V Series ⌀14/F Series   Approx. 22% downsized
[Main Specifications]
  • Size: ⌀11mm, ⌀14mm
  • Varistor voltage range: 200V to 1,100V
  • Operating temperature range: -40°C to +85°C
  • Endurance: Guarantees 1,000 hours at 85°C, maximum rated voltage applied
  • Guaranteed surge resistance per surge:
Case size Varistor voltage
200V to 560V 620V to 1,100V
⌀11 6,000A 5,000A
⌀14 10,000A 7,500A
  • Case size:
Case size D T H
⌀11 14.0mm
5.2mm to 10.1mm 18.0mm
⌀14 17.5mm

[International Safety Standards]
We plan to achieve UL, VDE and CQC certification.

Scheduled to be available from January 2022

[Mass Production]
Scheduled to start in June 2022

[Production Site]
Chemi-Con Yamagata Corp. Nagai Plant

[Product Appearance]