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Radio
Broadcast Technical Consulting and Sales
10032 Island Drive, Brainerd, MN
56401
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Radio
Broadcast Technical Consulting and Sales |
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Technical Tips from Mark W. Persons |
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Integrated Circuit Adapter |
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Many
integrated circuits are no longer available in traditional 8-pin,
14-pin, and 16-pin DIP (Dual Inline Package). For replacement
purposes, you many need to purchase SOIC
(Small-Outline Integrated Circuit) circuits with the same internal
characteristics, but much smaller in size. They are designed for
surface mounting instead of through-hole or insertion into a socket.
A 14-pin DIP integrated circuit is 0.75" long. An SOIC equivalent is 0.35" long. A DIP adapter is on the left for an SOIC on the right. |
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Here is an SOIC on an adapter socket. Soldering the SOIC to the adapter takes a small soldering iron and a steady hand. There are extra unused solder pads on this adapter, as you can see. |
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Once
completed, the SOIC with adapter is plugged into a regular 14-pin IC
socket. If the soldering is correct, the circuit should work just
fine. In this case, it is an LM1877 audio IC in a Marti R-10
Receiver. The things you have to do to keep old equipment running nowadays! |
The stories go on and on.
Stop in again sometime. I'll leave the soldering iron on for you.
Mark W. Persons
Ham WØMH
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page last edited 10/11/2010
