ECA 251-A
ECA 251-A 1970-JAN-01 Test to Determne the Temperature Rse as a Functon of Current n Prnted Conductors
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This test method covers a procedure for comparatively determining the effects of printed conductor materials, conductor cross sections, substrate materials, and processes on the temperature -D.C. current characteristics of printed wiring boards. A standard test sample is recommended and defined.