电阻器非线性测量方法

[中文适用范围]： 非线性测试是一种评估电阻元件完整性的方法。它可以作为一种有效的在线筛选方法，适用于检测和消除无源元件中潜在的婴儿死亡率故障。该方法相当快速@方便@并且相关设备相对便宜。引起电阻器非线性的典型效应是例如电阻膜内的不均匀点@螺旋凹槽中留下的薄膜痕迹@或连接引线或端子与电阻元件之间的接触不稳定。本国际标准规定了评估电阻器中产生的非线性失真程度的测量方法和相关测试条件。如果相关组件规范有规定或客户与制造商达成一致，则应用此方法。 [外文原描述]： IEC 60440:2012 specifies a method of measurement and associated test conditions to assess the magnitude of non-linear distortion generated in a resistor. This method is applied if prescribed by a relevant component specification, or if agreed between a customer and a manufacturer. This International Standard cancels and replaces the Technical Report IEC/TR 60440, published in 1973. The major changes with regard to the Technical Report are: - change of the principle parameter's term from "third harmonic attenuation" to "third harmonic ratio"; - addition of advice on the prescription of requirements in a relevant component specification; - addition of a set of recommended measuring conditions for a specimen with a rated dissipation of less than 100 mW; - a complete editorial revision.