电子设备用固定电阻器. 第2部分: 分规范: 绕线固定低功率薄膜电阻器

[中文适用范围]： IEC 60115 的本部分适用于电子设备中使用的引线式固定低功率薄膜电阻器。这些电阻器通常根据类型（不同的几何形状）和样式（不同的尺寸）以及产品技术来描述。这些电阻器的电阻元件通常由保形漆涂层保护。这些电阻器具有电线端子，主要用于通过通孔技术安装在电路板上。该标准的目的是规定优选的额定值和特性，并从 IEC 60115-1 中选择适当的质量评估程序、测试和测量方法，并给出此类电阻器的一般性能要求。 [外文原描述]： IEC 60115-2:2014 is applicable to leaded fixed low-power film resistors for use in electronic equipment. These resistors are typically described according to types (different geometric shapes) and styles (different dimensions) and product technology. The resistive element of these resistors is typically protected by a conformal lacquer coating. These resistors have wire terminations and are primarily intended to be mounted on a circuit board in through-hole technique. The object of this standard is to prescribe preferred ratings and characteristics and to select from IEC 60115-1, the appropriate quality assessment procedures, tests and measuring methods and to give general performance requirements for this type of resistor. This edition includes the following significant technical changes with respect to the previous edition: - it includes test conditions and requirements for lead-free soldering and assessment procedures meeting the requirements of a "zero defect" approach; - it introduces a product classification based on application requirements; - it includes an extension of the list of styles and dimensions; - it includes the use of an extended scope of stability class definitions; - it includes the extension of the lists of preferred values of ratings; - it includes test conditions and requirements for lead-free soldering, for periodic overload and for resistance to electrostatic discharge (ESD); - it includes a new set of severities for a shear test; - it includes definitions for a test board; - it includes the replacement of assessment level E and possible others by the sole assessment level EZ, meeting the requirements of a "zero defect" approach; - it includes an extended endurance test, a flammability test, a temperature rise test, vibration tests, an extended rapid change of temperature test, and a single pulse high-voltage overload test; - it includes requirements applicable to 0-ohm resistors (jumpers); - it includes recommendations for the denomination, description, packaging and quality assessment of radial formed styles; - it includes prescriptions for endurance testing at room temperature, supplementary to the rulings of IEC 60115-1.