Thermistor borrows from platinum sensor technology
An
ATC Semitec product story
Edited by the Engineeringtalk editorial team
Apr 20, 2005
In trying to find a new cost-effective, manufacturing method to produce fast-response, high temperature NTC thermistors, Semitec has turned to platinum sensor technology.
In trying to find a new cost-effective, manufacturing method to produce fast-response, high temperature NTC thermistors, Semitec has turned to platinum sensor technology.
Using similar thin-film technology and laser-trimming techniques, the company has created the ultraslim FT thermistor on an 0402 size footprint.
Being thin-film, it has an extremely fast response and can be fixed using solder, gold-wire or epoxy bonding techniques.
A further version (termed FL) has short axial leads suitable for spot-welding.
Because of its high sensitivity (-5%/C) and high signal strength (resistance values up to 360kohm), the FT has no need for compensating lead-wires and the control circuitry can also be simplified.
Thus the FT is being considered as a more cost-effective and more robust alternative to Pt sensors up to 350C.
A 1% tolerance FT is as accurate as a Class B Pt sensor.
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