I have this IC which needs socketing, but according to all my catalogs and resources it doesn't have the standard dimensions. Is this so, and if yes -which IC socket should I be looking for?
It's a 28 pin IC from Texas instruments (TMC-0281) and I measure approx
10.5mm between the two rows. Each row (14 pins) is approx 23mm (measuring from pin 1 to pin 14, or 15 to 28).Arild P. schrieb:
This is probably a so-called "Shrink DIP" package, 70 mil pitch and 400 mil between rows.
It will be hard to get a socket for those...
-- Dipl.-Ing. Tilmann Reh http://www.autometer.de - Elektronik nach Maß.
Bummer :-( Failing that I get an IC socket, are there other solutions? I remember having used some sort of rolls of metal "IC legs" that you cut off in say, 14 pins (for use with a 28 pin IC), insert it into one of the rows in the PCB, solder it in place, then bend off and remove the top part which keeps them together. I have no idea what its called (hence the lengthy explanation), but given the closer proximity of each IC leg with the abovementioned IC, those legs might be too wide and end up touching each other, or would it work? Other suggestions?
Arild P. schrieb:
There were sockets (milled precision ones) for the 64-pin shrink DIP available (for the HD64180 or Z180, for example). It has the same pitch. Maybe you can get one of those, cut it, and use segments of the resulting strips.
-- Dipl.-Ing. Tilmann Reh http://www.autometer.de - Elektronik nach Maß.
1.778 mm pitch (shrink DIP) production sockets are available from Assman.
For test sockets, use Yamaichi.
Best regards, Spehro Pefhany
-- "it's the network..." "The Journey is the reward" speff@interlog.com Info for manufacturers: http://www.trexon.com Embedded software/hardware/analog Info for designers: http://www.speff.com
Tilmann Reh schrieb:
DigiKey has them:
Regards, Dieter
Dieter Wiedmann schrieb:
Surprisingly... :-) I did not expect that since these packages are really rare meanwhile.
-- Dipl.-Ing. Tilmann Reh http://www.autometer.de - Elektronik nach Maß.
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