I think there is a difference.

Thermal impedance takes into consideration the thermal masses in the
system. This is important for pulsed thermal loads.

Thermal resistance causes the steady-state temperature rise in response to
a steady-state thermal load.

The two are analogous to AC vs. DC circuit analysis.

Don Borowski
Schweitzer Engineering Labs
Pullman, WA





[email protected]@majordomo.ieee.org on 05/01/2003 07:48:04 AM

Please respond to [email protected]

Sent by:    [email protected]


To:    <[email protected]>, <[email protected]>
cc:
Subject:    RE: Heat sink thermal impedance.



I  believe they mean the same thing.

   Dave Cuthbert
   Micron Technology

From: LEUNG YAT WAH DEREK  [mailto:[email protected]]
Sent: Thursday, May 01, 2003 3:00  AM
To: [email protected]
Subject: Heat sink  thermal impedance.



Who can tell me what is  the difference between "thermal impedance" and
"thermal resistance" when talk  about heat sink, thanks.

Derek  Leung.






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