本标准描述了测量信号和调节器二极管热阻的试验方法。对该测试方法进行修改的需要源于之前在热阻测试中对信号和调节器二极管应用的有限描述。以前作为ID-13出版。ANSI/EIA-531-1986（7月）于1996年6月到期。2002年4月再次确认后成为JESD531。

This standard describes a test method for measuring the thermal resistance of signal and regulator diodes. The need for modification of this test method arose out of the limited description that existed earlier for both signal and regulator diode applications in testing for thermal resistance. Previously published as ID-13. ANSI/EIA-531-1986 (July) expired June 1996. Became JESD531 after reaffirmation April 2002.