Important Notice: Our web hosting provider recently started charging us for additional visits, which was unexpected. In response, we're seeking donations. Depending on the situation, we may explore different monetization options for our Community and Expert Contributors. It's crucial to provide more returns for their expertise and offer more Expert Validated Answers or AI Validated Answers. Learn more about our hosting issue here.

Are any considerations necessary in the case of ambient temperature changes?

April 26, 2017Ambient Case changes considerations necessary temperature

0

Posted

Are any considerations necessary in the case of ambient temperature changes?

1 Answer

0

Posted

Yes. Pc (Collector power dissipation) must be derated based on the ambient temperature Ta. Derating must be performed based on the SOA as well. Also, please note that the input voltage (VBE for bipolar and VI(on)/VI(off) for digital) and gain (hFE and G) are affected by the ambient temperature, making it important to verify the electrical characteristics vs. temperature curves (for MOSFETs as well).