Resistor and Capacitor Kits on Ebay.. Worth it???

[quadwould]

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=4664&item=7518771313&rd=1

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=36338&item=7519020590&rd=1

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=73147&item=7519287719&rd=1


These equate to 1-2 cents/pence per resistor...... Really great prices.

and it you check their Caps its about 5 pence/10 cents per cap.....

are these to be trusted quality wise????
should one expect some slop (non working)


This would be a great way to build up supplies........ but if they are not to be trusted for higher end peices of Kit like the DIY*81, G*SSL, Gy-Tec*EQP1A , etc etc.... then i will stick to Xicon and Panasonic from Digikey, Mouser, Newark etc...

What does everyone think?

 

[PRR]

> These equate to 1-2 cents/pence per resistor

Only if you use ALL 1,100 resistors.

My many-decades experience is that you'll never use more than 10%-20% of the resistors in an assortment. So the net cost is still about 12 cents each, same as the per-each price has been since 1966 (two for $0.25 at Lafayette Electronics).

As a cost-cutter, it is a wash.

As a way to "always" (almost) have the "right" value on-hand, it is cheap. And many places have similar assortments every day. (I can't say I've seen 1% 50ppm at this price.)

> are these to be trusted quality wise????
should one expect some slop (non working)

No, no. Good bulk resistors are now cheaper than rejected/re-tested resistors. These will be factory-new, probably on tape, and with defect levels in the one per million range. (Oh, some chance the assortment packers will give you two tapes of 2K2 instead of a 220 and a 2K2: read the marks!)

> not to be trusted for higher end peices of Kit

Probably the same resistors in many $5,000 famous-brand boxes. Sure better quality than we could afford in The Old Days. 1% resistors existed but (unless a major military contract had just been surplused) were mighty expensive.

 

[quadwould]

Sooo....these are good?

and what about the caps?

http://search.ebay.com/_W0QQsassZwwwQ5ffastcomponentsQ5fcoQ5fuk
or
http://www.fastcomponents.co.uk/

and
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=36338&item=7518771314
or
http://www.rshelectronics.co.uk/


And others as well.


with resistors i get it. rather strait forward. but with caps.. bit of variance quality wise..right?

 

[Guest]

I think a few UK guys here use Fast Components
Take the next bit of stuff with a pinch of salt as I am very new to this..
I don't worry too much about Metal Film Resistors apart from the 6k8 phantom power ones where I buy tight tolerances
I just bought a big load of a range of resistors for a tenner from somewhere (fast components I think!)
I buy power oxide resistors at 1,W,2W and 3W and use those in the PSUs I build.
With regard to capacitors - I did buy a load of whatever I could find that matched the voltage and capacitance value mentioned in the projects..
But since then I have grown a bit wary...
Why spend a lot on transformers and the rest of the bits and bobs and skimp on a few quid for some decent caps
I notice what other guys are buying in this group and now are buying those..
I don't pay attention to the voltage requirements as long as they are greater or equal to the value specified
But I do pay a lot of attention to the pin spacing (I have a lot of redundant caps with the wrong spaces!!)
e.g.
Wima Polypro and Polycarb caps
Kemet Tants
Elna Starget Electros
Ceramic COG (something like that)

 

[clintrubber]

Elna Starget Electros

Having problems with these ? Could imagine they are a bit too fat on some places. But leads will always fit, especially since they need to be put a bit higher up away from the PCB anyway on times.
I had to do that on the SSL-comp-PCB, tight spacing of components so those Stargets were a bit too large.