Breaking News
Design How-To

Avionic & military applications need -55C operation

NO RATINGS
Page 1 / 4 Next >
More Related Links
View Comments: Newest First | Oldest First | Threaded View
DoctorZ
User Rank
Rookie
re: Avionic & military applications need -55C operation
DoctorZ   5/14/2012 6:25:22 PM
NO RATINGS
Advanced thermal management materials, which have low coefficients of thermal expansion, can minimize thermal stresses and warping at low temperatures. In addition, they have low densities and thermal conductivities up to 1700 W/m-K. They are well established in aerospace/defense and commercial applications. If anyone wants papers on the subject, send me an email at c.h.zweben@usa.net

Bhola_#1
User Rank
Rookie
re: Avionic & military applications need -55C operation
Bhola_#1   10/30/2010 5:12:33 AM
NO RATINGS
Interesting but there are others that run below -55 C and quite challenging performance wise, especially large signal due to different technologies (such as phempt LNA etc.)

mike_lavoie
User Rank
Rookie
re: Avionic & military applications need -55C operation
mike_lavoie   10/27/2010 2:16:20 PM
NO RATINGS
Good Article but a little misleading. the title "Avionic & military applications need -55C operation" lead me to believe that he would cover all IC's or at least a larger percentage than just LDO's. We deal with -55 & even -60 requirements and it is very challenging so how about some tips on how to make commercial grade work at these temperatures. Screening of components, heaters, holding the circuits in reset until temp rises, better heat sinks and fans for hi temp are a few of the techniques we use. I agree with JW, what are the mechanisms that effect components at these temperatures?

BalaLak
User Rank
Rookie
re: Avionic & military applications need -55C operation
BalaLak   10/24/2010 4:54:34 AM
NO RATINGS
I agree with the other comment by JMWilliams. The first half of the article is definitely interesting. I'd have liked to see more specific details about effects of low temp (less than -40 degC) operation - in terms of design vs characterization trade-offs, process & material qual challenges.

JMWilliams
User Rank
Rookie
re: Avionic & military applications need -55C operation
JMWilliams   10/21/2010 10:14:31 PM
NO RATINGS
This was an interesting article. It would have been more interesting yet, if the author had discussed some more detail on causes and effects of operation of IC's below their rated temperature range. For example, increased conductance of metals and decreased semiconductor carrier mobility might be factors. What about brittleness of chips and packages because of the cold? I don't know . . ..

JMWilliams
User Rank
Rookie
re: Avionic & military applications need -55C operation
JMWilliams   10/21/2010 10:14:00 PM
NO RATINGS
This was an interesting article. It would have been more interesting yet, if the author had discussed some more detail on causes and effects of operation of IC's below their rated temperature range. For example, increased conductance of metals and decreased semiconductor carrier mobility might be factors. What about brittleness of chips and packages because of the cold? I don't know . . ..

Most Recent Comments
Tech on line balaji
 
seaEE
 
Duane Benson
 
MeasurementBlues
 
rick merritt
 
rick merritt
 
rick merritt
 
Garcia-Lasheras
 
Garcia-Lasheras
Radio
NEXT UPCOMING BROADCAST
EE Times Senior Technical Editor Martin Rowe will interview EMC engineer Kenneth Wyatt.
Top Comments of the Week
Like Us on Facebook

Datasheets.com Parts Search

185 million searchable parts
(please enter a part number or hit search to begin)
EE Times on Twitter
EE Times Twitter Feed
Flash Poll