| 摘要 |
<p>A rectangular wafer thermistor comprises a piece of ceramic thermistor material having electric contact material covering its opposite surfaces. A contact defining score mark with an open geometric shape other than a straight line extends across the thermistor through one layer of the contact material for separating the contact material on that surface into two contacts. The ends of the contact defining score mark intersect the opposite edges of the thermistor at different locations along the thermistor. The contact defining score marks may be V or U or otherwise shaped, and the intersections between the different sections of these score marks are preferably rounded, but may be sharp corners. The shape of the contact defining score mark prevents the thermistor from breaking at the contact defining score mark when the thermistor is broken off a large sheet of thermistor material. A sheet of ceramic thermistor material, coated on its opposite surfaces with contact material, has a grid of thermistor defining score marks defined in one surface, and the sections of the sheet surrounded by the grid lines form individual thermistors. A bending moment of force applied to the sheet will break the sheet along the thermistor defining score marks, but the geometric shape of the contact defining score mark in each thermistor will prevent the thermistor from breaking on the contact defining score mark.</p> |
