Often these letters refer to the type of packaging the chip comes in.
Sometimes it makes no difference (except maybe to the price) - plastic or
ceramic for example. Some times it does make a difference - DIP or surface
mount for example. The datasheet should give the details, even if the
catalog doesn't.
I don't specify this because these can vary brand to brand. If I say TL071,
what I am saying is "any brand or package of TL071 that will fit on the board".
With electros, the voltage on it needs to be equal to, or higher, than the
one I give.
Resistors need to be at least 1/4W (the standard for small resistors),
though higher ratings that will physically fit are okay. As for resistors,
5% tollerance is assumed if no value is given, though using 2% or 1%
resistors is fine. In fact, the preferred resistor type is metal film 1%,
but they do cost a little more.
Ken
Ken Stone sasami@... or sasami@...
Modular Synth PCBs for sale <http://www.blaze.net.au/~sasami/synth/>
Australian Miniature Horses & Ponies <http://www.blaze.net.au/~sasami/>
Sometimes it makes no difference (except maybe to the price) - plastic or
ceramic for example. Some times it does make a difference - DIP or surface
mount for example. The datasheet should give the details, even if the
catalog doesn't.
I don't specify this because these can vary brand to brand. If I say TL071,
what I am saying is "any brand or package of TL071 that will fit on the board".
With electros, the voltage on it needs to be equal to, or higher, than the
one I give.
Resistors need to be at least 1/4W (the standard for small resistors),
though higher ratings that will physically fit are okay. As for resistors,
5% tollerance is assumed if no value is given, though using 2% or 1%
resistors is fine. In fact, the preferred resistor type is metal film 1%,
but they do cost a little more.
Ken
>When im buying components to build my modules, does it matter which IC_______________________________________________________________________
>I buy? many of them have letters listed on the end of them that are
>not listed on the parts list. Say I need a tl071, do I get a tl071SM
>CD ACM ACP, etc.... Even simple parts like resistors and caps give me
>many options. I know this is some basic electronic stuff, and I
>should know it by now, but Im learning.
>(this is why I ordered my first few modules as kits from elby.. but
>Ive already picked out a few more that I want, and would like to get
>only the PCB's this time)
>
>
>
>
>
>
>
>The CGS Modular Synth home page: http://www.cgs.synth.net/
>
>Yahoo! Groups Links
>
>
>
>
>
>
>
Ken Stone sasami@... or sasami@...
Modular Synth PCBs for sale <http://www.blaze.net.au/~sasami/synth/>
Australian Miniature Horses & Ponies <http://www.blaze.net.au/~sasami/>