Title:
THERMALLY PROTECTED METAL OXIDE VARISTOR
Document Type and Number:
WIPO Patent Application WO/2019/071588
Kind Code:
A1
Abstract:
Provided herein are thermally protected varistor (TPV) devices. The TPV device further includes a terminal assembly coupled to the varistor body, the terminal assembly including a housing having a sidewall and a base, the base including an opening formed therethrough. A spring element (e.g., a spring element) of the terminal assembly includes a first end disposed within the housing and a second end extending outside of the housing. A first terminal of the spring element engages a thermal electrode of the varistor body through the opening of the base, and either maintains or breaks contact depending on whether a thermal linking material (e.g., solder) coupling the thermal electrode to the spring element is below or above a melting point (e.g., during an over-voltage fault condition). The TPV device may further include an inner electrode extending through the opening in the base of the housing for engagement with the spring element.
Inventors:
SONG DONGJIAN (CN)
LU LIBING (CN)
LU LIBING (CN)
Application Number:
PCT/CN2017/106133
Publication Date:
April 18, 2019
Filing Date:
October 13, 2017
Export Citation:
Assignee:
DONGGUAN LITTELFUSE ELECTRONICS CO LTD (CN)
International Classes:
H01C7/12
Domestic Patent References:
| WO2017140463A1 | 2017-08-24 |
Foreign References:
| EP2511915A1 | 2012-10-17 | |||
| US20130038976A1 | 2013-02-14 | |||
| US20070200657A1 | 2007-08-30 |
Attorney, Agent or Firm:
CCPIT PATENT AND TRADEMARK LAW OFFICE (CN)
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