Good People Clause 1.4.12.3 of this standard specifies that "..amount of heating or cooling is not designed to be dependent on ambient temperature..." does not seem relevant, because the standard requires you to find the worst-case test conditions for evaluation of the component.
And because of the requirement for worst-case test conditions, why is the term Tamb - Tma, as used in the equation to the temperature limit criteria? As my test conditions must comply by testing at rated temperature, this term will always evaluate to zero. So I interpret the standard so that clause 1.4.12 is the only criteria required. What nuance or associated clause am I missing? TIA. luck, Brian

