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US 8,912,876 B2Granted
Surface mounting varistor
AssigneeKoa Corporation
InventorsYoji Gomi, Tatsuya Kanzaki
Life of this patent
Estimating the term…
Abstract
A surface mounting varistor for high voltages and current pulses without any risk of burning a mounting board is provided. A covering material for a varistor 1 has a duplex (two layer) structure made from a first mold layer 13 and a second mold layer 15, and a leg with a predetermined height is formed on the bottom of the covering material. As a result, a space (void) formed between a varistor element 2 and a mounting board 20 when the varistor 1 is mounted on the board 20 allows avoidance of the risk of burning the board 20, even if the varistor short-circuits.
Claims7
A surface mounting varistor, in which
- a varistor element, electrodes deployed on respective sides of the varistor element, and paired frame terminals joined to the respective electrodes are covered by an insulating covering material;
- wherein
- legs with a predetermined height are formed on the bottom of the covering material, the paired frame terminals respectively protrude from the insulating covering material and bent along a surface of the legs, and front ends of the paired frame terminals sandwich a void formed between the legs on the bottom of the covering material, opposing each other.
Dependencies are inferred from the claim text.