[SI-LIST] Re: Question about transistors.

  • From: Fred Townsend <fred@xxxxxxxxxxxxx>
  • To: jomeshpa@xxxxxxxxxxxxxxx
  • Date: Thu, 16 Dec 2004 12:42:44 -0800

It's never a good idea to exceed manufacture's specifications. It may 
have nothing to do with cooling.  For instance, the fusing current of a 
1 mil bond wire is just above 1 amp. As for your question I don't 
recognize the term 'Bdc'.

Fred Townsend

Jomesh P A wrote:

>Hi experts,Sorry, its not exactly an SI Question, but can anybody help me?I 
>have a doubt in the specifications of a transistor. The datasheet says an 
>absolute maximum collector current of 1A.  But if we provide sufficient 
>cooling, can we use it to carry higher currents?  Also, the datasheet says the 
>transistor has an hfe of 25 for IC = 150mA and VCE = 2V. To design a switch 
>using this transistor with a load of approximately 1A, what could be the best 
>Bdc to assume???Thanks in advance.Jomesh
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