| Subject: | when Rja is not known, TO-126 |
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| From: | |
| Date: | 14 Aug 2006 14:47:55 -0700 |
| Newsgroups: | sci.electronics.basics |
the 2N4921 does not seem to have its Rja published anywhere. what would be a safe figure to use? my guess is 125 deg C/W with 1 W Pd. i found that somewhere on a TO-225 transistor, the 2n4921 is TO-126 (if there is a difference.) |
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