To: emc-p...@ieee.org
Subject: isolation of TO-220 package
Date: Monday, June 08, 1998 4:32AM
Hello everyone,
The following problem has probably several solutions, some of which I've
seen
implemented in power supplies.
PROBLEM:
In many applications the metal part of the TO220 package
There used to be a special plastic shoulder washer used in exactly this
application (The washer has a crossection resembling the letter T). This
solved the clearance and creepage problem. It fits inside the hole of the
TO-220.
Hans
Moshe,
The best way that I have seen is to use a thermally conductive isolation
pad between the rear of the transistor and the chassis. The pad should
extend beyond the conductive part of the component so creepage distances
are maintained.
The transistor would be held tight to the chassis by a
Compliance Engineer
Advanced Energy Industries, Inc.
Ft. Collins, Colorado USA
--
From: moshe_valdman_at_isr-rhv...@mail.nsix.co
To: emc-p...@ieee.org
Subject: isolation of TO-220 package
List-Post: emc-pstc@listserv.ieee.org
Date: Monday, June 08, 1998 4:32AM
Hello everyone,
The following
...@mail.nsix.co.il
[SMTP:moshe_valdman_at_isr-rhv...@mail.nsix.co.il]
Sent: Monday, June 08, 1998 9:37 AM
To: emc-p...@ieee.org
Subject: isolation of TO-220 package
Hello everyone,
The following problem has probably several solutions, some of which
I've seen
implemented in power
Hello everyone,
The following problem has probably several solutions, some of which I've seen
implemented in power supplies.
PROBLEM:
In many applications the metal part of the TO220 package (that's the square with
metal backing and 3 legs in a row) is (or should be considered) under live
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