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Subject: Re: [motm] 490 parts questions

From: Jeff Laity <synthetic@...>
Date: 2008-05-30

Thank you. Part numbers are very helpful, especially for caps and semiconductors. (hint, hint)

I think poly = polypropylene. They're dark red like kidney beans. I was trying to avoid using Digikey but I'll go ahead and order a bunch of components for my next three projects. 



From: "Paul Schreiber" <pschreiber@...>
Date: May 29, 2008 10:49:58 PM PDT
To: "MOTM List" <motm@yahoogroups.com>, "Jeff Laity" <synthetic@...>
Subject: Re: [motm] 490 parts questions


1. Do I need to match the transistors (should I order extras)?

No, there are SSM arrays for the required matched pairs.

2. The project calls for "100(0)pf film caps." Can I use 0.1uF poly caps
in their place?

Poly as in mylar? ACK (shudder!)

3. If no, can I use these for the 0.1mf caps on the 390?

Use the correct part for both, they are cheap enough from Digikey (part #P4525). And only 403,000 in stock :)

Paul S.




 

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