Title: Producing method for linear PTC metal-film thermal resistor
Application Number: 93111746 Application Date: 1993.09.17
Publication Number: 1100558 Publication Date: 1995.03.22
Approval Pub. Date: Granted Pub. Date: 1997.07.16
International Classifi-cation: H01C7/02,H01C17/00,H01C17/12
Applicant(s) Name: Dongnan Univ. Address: 210018
Inventor(s) Name: Chen Guoping, Zhang Suixin
Attorney & Agent: LOU GAOCHAO YAO JIANNAN
Abstract:
     In the production, Ni, Cr, Fe, Ti, Au, Ag, Pt, Cu, Al, Mn and other pure metal or constantan, Mn-Cu, Fe-Cr-Al, Ni-Cr-Al, Ni-Fe and other alloy block are selected to constitute targel material in certain area percent. Through magnetically-controlled sputtering filming with the said target material and vacuum heat treatment of film, is produced metal-film PTC thermistor with a TCR value of 500-5000 PPM each deg.C and a linear deviation of resistance-temp. characteristics being less than minus or plus 1% in the temp. of -30 to 130 deg.C.
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