EEVblog Electronics Community Forum
General => Buy/Sell/Wanted => Topic started by: PartialDischarge on October 17, 2018, 02:56:47 pm
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Recently I bought a lot of smd reels and there are too many 50V 100nf 0603 caps on it, so I'm selling these,
https://www.digikey.com/product-detail/en/murata-electronics-north-america/GRM188R71H104KA93D/490-1519-2-ND/587143 (https://www.digikey.com/product-detail/en/murata-electronics-north-america/GRM188R71H104KA93D/490-1519-2-ND/587143)
Reels are clean and unused, each reel of 4000 units for 10€, 10 reels available, postage not included.
Sale ended
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Recently
I don't think that 10 years ago qualifies as recently.
EDIT: I think you bought a bunch of NOS parts.
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Where's that thread about the availability of 0.1uF caps being bad? I think there's a market for these.... :D
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I don't think that 10 years ago qualifies as recently.
I seriously don't get what is wrong with what I wrote, "I recently bought a lot ( a batch, a set, a collection) of smd reels", and what is contradictory with the original date of MFG :-//
You provided digikey link, so for some reason I first read it like "I bought from digikey". It's just that you may think twice before using them for production. They may be not as solderable as fresh parts. Depends on component itself and storage conditions.
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each reel of 4000 units for 10€, 10 reels available, postage not included.
what would postage to (northern) europe cost?
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what would postage to (northern) europe cost?
I'd be interested in the same.
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Well, done, to the trash they go. Jeez.
Don't get me wrong, I think that's a reasonable price with current MLCC shortage. They may solder just as well as fresh parts, or may not.
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They may be not as solderable as fresh parts. Depends on component itself and storage conditions.
I agree. These are good for prototypes but probably not for production runs using reflow soldering.
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Don't get me wrong, I think that's a reasonable price with current MLCC shortage. They may solder just as well as fresh parts, or may not.
I'm getting you exactly right. These capacitors are in perfect condition, otherwise I wouldn't sell them, but I guess you would and there lies the doubt. I measured 20 of these and they measure from 97.5 to 101nF, most around 99, and this is X7R so any lower capacitance could be explained by applied voltage. Can't reflow them right now but I'd bet they'd be perfect, the capacitance itself tells they have been stored properly, besides that I know that for a fact. Anyway end of story
|O Did I ever say their parameters could deteriorate? It has nothing to do with solderability. What matters how terminal surface finish was made and storage conditions. I've seen plenty of parts which were 4-5 years old and solder like crap or 20 year old parts which solder excellent. What you measured is rather high, caps like X7R loose more than 10% of their capacitance with time (ageing) but process is completely reset with heating (soldering).
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I measured 20 of these and they measure from 97.5 to 101nF, most around 99, and this is X7R so any lower capacitance could be explained by applied voltage.
They have 10% tolerance. Take ageing in account and 80nF probably would still be within tolerance given the age. Heating/soldering returns capacitance to initial value.
otherwise I wouldn't sell them, but I guess you would and there lies the doubt.
:palm:
I just don't get why you are so agitated about all of this? Basically the only thing I concerned in what I wrote is that it would be proper to mention they are NOS.
Here is example how I "sell" parts with dubious origin. https://www.eevblog.com/forum/buysellwanted/31-pcs-attiny24-(soic-14)-for-the-cost-of-shipping/ (https://www.eevblog.com/forum/buysellwanted/31-pcs-attiny24-(soic-14)-for-the-cost-of-shipping/)
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I would like a reel. Postage to Sweden. Let me know and I can pm address and PayPal you?
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I would have taken five rolls without questioning, but since you already dumped them just because someone asked a legitimate question... well... too bad.
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I would have taken five rolls without questioning
I’m intrigued what you would have done with 20,000 100nF caps? Please tell...
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I may be accused of trying to con someone
Who the F accused you of anything? :palm: Sorry but your skin is too thin to use internet.
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I’m intrigued what you would have done with 20,000 100nF caps? Please tell...
Obviously not used them all at once. But I guess it is a well known fact right now that Caps are somewhat rare at the moment... Since the price was very good I would have stocked those since I can't get my hands on new caps for a reasonable price right now.
Nothing was asked. Assuming is what happened. I had one reel already packaged which I'm giving to someone for free. I have other stuff that I was thinking of giving just for the shipping price but now I say fk it, I may be accused of trying to con someone
I guess it was a good thing that I didn't get the chance to buy anything from you :)
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Since the price was very good I would have stocked those since I can't get my hands on new caps for a reasonable price right now.
I’m sure if you move to private messaging, those 20,000 caps will still be available to purchase.
I’m guessing they were taken off the market to avoid all the chatter.... I struggle to see how anyone who is reflow soldering a production run of PCBs would be scouring these forums to obtain a ‘deal’.
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Nobody talked about big production runs. :) I tend to stock Stuff that I know will be usefull soon or is somehow rare and could be of some value in the more or less near future. However, I don't run after someone who doesn't want to sell his stuff.
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I would have taken five rolls without questioning
I’m intrigued what you would have done with 20,000 100nF caps? Please tell...
I got to admit, I wonder what kind of characteristics you could get from 400uF @ 100V of MLCC capacitors.
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Nobody talked about big production runs. :) I tend to stock Stuff that I know will be usefull soon or is somehow rare and could be of some value in the more or less near future. However, I don't run after someone who doesn't want to sell his stuff.
But why would you need 20000 capacitors? Over time parts get more difficult to solder especially if they are stored in poor conditions. A while ago I bought a reel of 100nf capacitors myself but only because that was the only available option to get some 100nf capacitors. I don't think I'll use all of them. Going through 1000 pieces takes me a few years let alone 4000 pieces.
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But why would you need 20000 capacitors?
Please read again what I wrote - Sometimes you have to guess what could be valueable under the given circumstances, even if it's potentially a risk. At least that is what I found to be the right way for me.