The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 12, 2025
Filed:
Dec. 05, 2022
Amazing Microelectronic Corp., New Taipei, TW;
Sung-Chih Huang, Jiaoxi Township, TW;
Chih-Ting Yeh, Zhudong Township, TW;
Che-Hao Chuang, Jhudong Township, TW;
AMAZING MICROELECTRONIC CORP., New Taipei, TW;
Abstract
A transient voltage suppressor with adjustable trigger and holding voltages is provided, including a heavily doped substrate of a first conductivity type connected to a first node, a lightly doped epitaxial layer of a second conductivity type on the substrate, a first and third well region of the first conductivity type, a second well region of the second conductivity type, a first and third heavily doped region of the second conductivity type and a second heavily doped region of the first conductivity type. The heavily doped regions are commonly electrically connected to a second node, and individually disposed in the well regions. Trenches are disposed opposite in the substrate for electrical isolation. A floating base bipolar junction transistor and silicon controlled rectifier can be respectively formed under a positive and negative surged mode. Accordingly, the invention is advantageous of superior electrical performances, high layout flexibility and low area consumption.