madbeanpedals::forum

General => Open Discussion => Topic started by: chromesphere on January 14, 2014, 04:46:04 AM

Title: Commonality of Film Caps values in BOM's
Post by: chromesphere on January 14, 2014, 04:46:04 AM
Hey guys,
I was thinking of getting some more ECQ caps for my webstore and was wondering what the most common values were for films. I went through all of the projects on the madbean project page and added up the number times film cap values appeared.  I've left out 1uf (too expensive in ecq) and double ups (1590a rat and normal rat for example).  I thought this info might be useful to you all, if your planning on stocking up, or for future reference.  So heres the rough guide:

470n – 1
330n – 2
220n – 22
150n – 2
100n – 67
82n - 1
68n – 5
50n – 3
47n – 28
39n – 2
33n – 8
27n – 1
22n – 13
15n – 7
10n – 26
8n2 – 2
6n8 – 9
5n6 – 1
4n7 – 8
4n – 1
3n3 – 9
3n – 1
2n2 – 15
1n8 – 2
1n5 – 3
1nf – 15

Cheers
Paul
Title: Re: Commonality of Film Caps values in BOM's
Post by: selfdestroyer on January 14, 2014, 04:49:48 AM
I did this when I first started also. Worked out well for the more common parts. Thanks for sharing your list.
Title: Re: Commonality of Film Caps values in BOM's
Post by: chromesphere on January 14, 2014, 04:53:36 AM
Np. I think this is the third time I've done it and the conclusion is usually 1 4.7 10 47 100 (uf, nf, etc).  But its interesting to see some of the other values that come up commonly.  like 220nf 22nf and 2.2nf.  I wouldn't have picked those values as one to stock up on.
Title: Re: Commonality of Film Caps values in BOM's
Post by: atreidesheir on January 15, 2014, 12:28:50 AM
This is great.
thanks.
I did the same thing a while back for log and antilog pots for madbean, chi_boy, jmk, 1775, grind, ROG, and a couple odd and ends.  To give me an idea of proportions.

100ka  70
10ka 12
500ka  28
1ma 24
500kc 9
5kc 7
25ka 1
50ka 12
100kb dual
250ka 10
1kb 4
10KC 2
10kb 5
2kb 3
100kc 2

Title: Re: Commonality of Film Caps values in BOM's
Post by: chromesphere on January 15, 2014, 12:32:16 AM
That's cool!  Hey I did notice though, not 100kb (single gang)?
Its interesting to see these lists.  I would never have thought 500ka would be that common, but there you go!
Title: Re: Commonality of Film Caps values in BOM's
Post by: atreidesheir on January 15, 2014, 02:57:58 AM
these are just the logaritmics.  I had plenty of linears.  I was rolling my own log pots using linears and resistors across the logs for taper and less common values.
I will look and see what the 500ka's were for.
Title: Re: Commonality of Film Caps values in BOM's
Post by: chromesphere on January 15, 2014, 03:09:17 AM
Sorry atriedsheir, just saw you mentioned it was only log & anti-log
Title: Re: Commonality of Film Caps values in BOM's
Post by: danwelsh on January 15, 2014, 03:20:09 AM
okay so whose doin resistors lol.....maybe ill do it tomorrow when I get up :)
Title: Re: Commonality of Film Caps values in BOM's
Post by: atreidesheir on January 15, 2014, 11:59:31 PM
some of the 500ka pots are for jfet emulators (supreaux deux) and some gain pots.  I probably added 6 or 7 to have on hand for humbucker equipped guitars.