To accurately and easily fix a thermistor and a lead wire.
A thermistor 4 provided on one of the front or rear side of the top side of a rectangular plate-shaped alumina substrate 1, and both a left electrode 5 and a right electrode (6) connected to the thermistor are provided on the other of front or rear side of the top side 2 of the alumina substrate 1, and a connecting part 8 which reaches the back surface is provided on one of the left electrode 5 or right electrode (6), and a connection electrode 9 to be connected to the connecting part 8 is provided on the back surface. If electrodes, either of the left electrode 5 or the right electrode (6) on the top side, to which the connecting part 8 is not connected and the connection electrode 9 on the back side are held resiliently between core lines 11, 11' of a lead wire 10, and the section held resiliently between the core lines 11, 11' is immersed in a molten solder 12 to carry out the welding.
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SAKATA MASARU
KASAHARA NORIO
