EP 0006442 B1 19830112 - ADJUSTABLE THIN-FILM RESISTOR
Title (en)
ADJUSTABLE THIN-FILM RESISTOR
Publication
Application
Priority
US 92129178 A 19780703
Abstract (en)
[origin: US4191938A] A method for laser trimming of resistors which includes sputter depositing or vaporizing resistor material in a limited area but the resistor geometry and trimming location is designed to achieve a maximum resistor trimming range with a minimum substrate area occupied by the resistor. A cermet resistor is fabricated on a metallized ceramic substrate with the resistor having a low length to width ratio. A laser cut is used to provide resistor values greater than 250 ohms and up to 16000 ohms.
IPC 1-7
IPC 8 full level
H01C 7/00 (2006.01); H01C 17/23 (2006.01)
CPC (source: EP US)
H01C 7/006 (2013.01 - EP US); H01C 17/23 (2013.01 - EP US); Y10T 29/49099 (2015.01 - EP US)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0006442 A2 19800109; EP 0006442 A3 19800123; EP 0006442 B1 19830112; DE 2964466 D1 19830217; US 4191938 A 19800304
DOCDB simple family (application)
EP 79101562 A 19790522; DE 2964466 T 19790522; US 92129178 A 19780703