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在设计电阻元件时,对电阻元件所要求的性能以及为满足这些要求所用的电阻材料,可大致归纳如下(附表): 现把卷线电阻、薄膜及厚膜电阻材料中有代表性的几种产品的现状概述如下: 金属卷线电阻材料这种电阻元件一般均采用合金丝,表面涂上具有耐热、防潮、高绝缘性能的陶瓷或树脂,通过改变长度来调整电阻值大小,卷起来,两端分别用焊接或钎焊法焊在电路中使用。
The performance required for the resistive element in designing the resistive element, and the resistive material used to satisfy these requirements, can be summarized as follows (Table 1): Now, the typical values of the winding resistance, thin film and thick film resistive material The current status of the kinds of products are summarized as follows: Metallic Wound Resistive Material The resistive components are generally made of alloy wire. The surface is coated with ceramic or resin with heat-resistant, moisture-proof and high insulation properties. The resistance value is adjusted by changing the length and rolled up , Respectively, both ends of the welding or soldering method used in the circuit.