SMT IC pin identification

Started by bside2234, April 27, 2011, 07:44:49 PM

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bside2234

I'm working on my first SMT design and I can't identify what is pin 1 on the IC. There isn't a dot like the datasheet shows. One side of the top edge is slanted 45 degrees while the other is 90 degrees.
Is the side with the 45 degree slant the side of pin 1? It looks like on the package information that this is so but I'd like to verify it before I solder in on the wrong way.

Here is the datasheet of the IC. http://www.mouser.com/Search/ProductDetail.aspx?R=LF351Dvirtualkey51120000virtualkey511-LF351D

davent

"If you always do what you always did- you always get what you always got." - Unknown
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Hides-His-Eyes


defaced

On page 12 of the data sheet, the lower left hand diagram, blow it up.  You'll see light gray lines on the inside of the part body, those are the lines that identify the shape of the top beveled sides.  You'll see that the lower one is more "inside" than the upper one, that's is the 45 deg beveled side.  Pin identifications are called out on that diagram too. 
-Mike

bside2234

Thanks guys. That article is exactly what I was looking for. I was googling for about an hour and just gave up and came here. I guess I wasn't using the right search term(s).

I did see the package outline in the datasheet that had that light line on the one side. That was the only reason I thought the slanted side might be the pin 1 side. I just wanted to verify it before I soldered that little sucker on there. I don't want to take it off and have to put a new one on.

Thanks again.