wat r the causes of transistor failures?

Thread Starter

appoos

Joined Sep 18, 2006
12
wat can cause BJT,MOSFET failures?
for me all the time MOSFET is failing an hour.
wat cud b the problem?
ESD (static charge) ll affect it very much?
 

Thread Starter

appoos

Joined Sep 18, 2006
12
its just a switching circuit..
out put is goin to a motor drive..details i donno..
wat are all the general cases of failures?
 

hgmjr

Joined Jan 28, 2005
9,029
Greetings appoos,

There are many scenarios that could potentially be causing your failure. I agree with gadget. Without a diagram of the section of circuitry that is failing it is difficult to narrow down the cause.

hgmjr
 

Thread Starter

appoos

Joined Sep 18, 2006
12
anyways plz post some docs abt things that can cause failure..
plz
or lemme know abt the scenarios..

thanks
appoos
 

JoeJester

Joined Apr 26, 2005
4,259
Post your circuit and the readings you've taken so far.

Otherwise, the failure analysis for individual components can be opens, shorts, leakage ... caused by exceeding component specifications which could include just about anything up to a nearby lightning strikes travelling through the earth connection.

You can visit the microwave mortuary and see some examples of component failures at http://www.microwaves101.com/content/microwavemortuary.cfm
 
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