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. 06, 2019
Filed:
Dec. 29, 2017
Applicants:
China Petroleum & Chemical Corporation, Beijing, CN;
Sinopec Tech Houston, Llc., Houston, TX (US);
Inventors:
Sheng Zhan, Houston, TX (US);
Jinhai Zhao, Houston, TX (US);
Fengtao Hu, Houston, TX (US);
Herong Zheng, Houston, TX (US);
Assignee:
CHINA PETROLEUM & CHEMICAL CORPORATION, Beijing, CN;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H05K 1/02 (2006.01); H05K 1/11 (2006.01); H05K 1/03 (2006.01); H05K 1/18 (2006.01);
U.S. Cl.
CPC ...
H05K 1/0271 (2013.01); H05K 1/0353 (2013.01); H05K 1/111 (2013.01); H05K 1/115 (2013.01); H05K 1/181 (2013.01); H05K 2201/0154 (2013.01); H05K 2201/09509 (2013.01);
Abstract
A printed circuit board assembly (PCBA) for downhole applications has a printed circuit board (PCB) and a plurality of electronic components installed on the PCB. The PCB comprises a polyimide substrate, a lead-free surface finish, a plurality of traces, a plurality of surface mount pads, and a plurality of VIAs. The ratio between the width of one of the plurality of surface mount pads to the width of the trace connected thereto is 2 or less.