[sdiy] ebay resistors recommendations for values and quantity

[Andre Majorel]

On 2008-02-16 15:28 -0600, James R. Coplin wrote:

> I am tired of buying resistors for my projects per project as I
> always seem to have piles of odd resistors but not necessarily
> the correct ones.  There are some good deals (even with
> shipping) from Chinese suppliers offering 1% lots.
> 
> It ends up beings $19 after shipping for 2500 resistors of the
> following values (50 resistors each value):
> [...]
> My question is, is this a good selection of values or are these
> more odd ball values instead of useful values?

from http://www.teaser.fr/~amajorel/misc/sdiy-parts.txt based on
162 modules from CGS, Jürgen Haible, James Patchell, Oakley, MOTM
and Tellun :

  r     33 10 1% metal film
  r    124 22 1% metal film
  r      1 33 1% metal film
  r     27 47 1% metal film
  r      1 56 1% metal film
  r     61 75 1% metal film
  r      1 82 1% metal film
  r    138 100 1% metal film
  r      6 150 1% metal film
  r     18 200 1% metal film
  r     33 220 1% metal film
  r     62 270 1% metal film
  r     53 330 1% metal film
  r     35 390 1% metal film
  r     14 470 1% metal film
  r      8 620 1% metal film
  r     36 680 1% metal film
  r     38 820 1% metal film
  r    699 1k 1% metal film
  r      4 1.2k 1% metal film
  r      2 1.3k 1% metal film
  r     34 1.5k 1% metal film
  r     37 1.8k 1% metal film
  r     14 2k 1% metal film
  r    205 2.2k 1% metal film
  r      5 2.7k 1% metal film
  r      2 3k 1% metal film
  r     46 3.3k 1% metal film
  r      2 3.6k 1% metal film
  r     14 3.9k 1% metal film
  r    146 4.7k 1% metal film
  r     10 4.99k 1% metal film
  r     81 5.1k 1% metal film
  r      6 5.6k 1% metal film
  r     28 6.2k 1% metal film
  r     39 6.8k 1% metal film
  r     13 7.5k 1% metal film
  r     12 8.2k 1% metal film
  r   1117 10k 1% metal film
  r     10 10k 1% matched
  r     30 11k 1% metal film
  r     68 12k 1% metal film
  r      2 13k 1% metal film
  r     88 15k 1% metal film
  r     54 18k 1% metal film
  r     62 20k 1% metal film
  r    257 22k 1% metal film
  r      4 22.1k 1% metal film
  r     30 24k 1% metal film
  r      9 24.9k 1% metal film
  r     57 27k 1% metal film
  r     19 30k 1% metal film
  r    372 33k 1% metal film
  r      2 36k 1% metal film
  r     36 39k 1% metal film
  r      6 39k 0.1%|39k 1%
  r      1 44.2k 1% metal film
  r    299 47k 1% metal film
  r     63 49.9k 1% metal film
  r     17 51k 1% metal film
  r      9 51.1k 1% metal film
  r      5 54.9k 1% metal film
  r     51 56k 1% metal film
  r     72 62k 1% metal film
  r      6 68k 0.1%|68k 1%
  r     50 68k 1% metal film
  r      6 82k 1% metal film
  r      6 90.9k 1% metal film
  r      6 100k 0.1%|100k 1%
  r   1768 100k 1% metal film
  r     10 100k 1% matched
  r     14 120k 1% metal film
  r     94 150k 1% metal film
  r     26 180k 1% metal film
  r    108 200k 1% metal film
  r     59 220k 1% metal film
  r      3 221k 1% metal film
  r      1 240k 1% metal film
  r      2 243k 1% metal film
  r     12 270k 1% metal film
  r      5 300k 1% metal film
  r     31 330k 1% metal film
  r     64 390k 1% metal film
  r      6 390k 0.1%|390k 1%
  r      1 412k 1% metal film
  r    104 470k 1% metal film
  r      1 510k 1% metal film
  r     33 560k 1% metal film
  r      2 562k 1% metal film
  r      3 600k 1% metal film
  r     10 680k 1% metal film
  r      6 680k 0.1%|680k 1%
  r     18 750k 1% metal film
  r    148 1m 1% metal film
  r      2 1.2m 1% metal film
  r     11 1.5m 1% metal film
  r     35 2.2m 1% metal film
  r     41 3.3m 1% metal film
  r      7 4.7m 1% metal film
  r      7 10m 1% metal film
  r      1 22m 1% metal film

All 1/4 W unless otherwise specified. Most don't actually need to be
metal film or 1% but those are so cheap now that it's not worth
bothering with 5% carbons. Mouser is not necessarily the best place
for metal film resistors in smallish quantities. They have 100 PPM
parts for a good price but their 50 PPM counterparts are 4 times as
expensive. Farnell sell 50-PPM Multicomp MF25 resistors for 0.038 EUR
each in quantities of 50, i.e. not much more than what Mouser charges
for their 100 PPM parts.

-- 
André Majorel <URL:http://www.teaser.fr/~amajorel/>
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