Arduino Forum

Using Arduino => General Electronics => Topic started by: DrAzzy on Jun 15, 2018, 08:06 am

Title: Is there some sort of ceramic cap supply crunch?
Post by: DrAzzy on Jun 15, 2018, 08:06 am
Digikey and Mouser are both out of all the usual low-cost ceramic caps in 0.1uF 0805 X7R. They were like 2 cents last year, now the cheapest on mouser are 5 and cheapest on digikey are 8 (or they're out of stock). Seeing the same sort of thing with larger values too.

This is just nuts - and it seems like it's gotten worse in just the past few weeks. I was able to find them for 4 cents on digikey this weekend, but now the cheapest are 8! Anyone know what the story is here? Did something happen to a major manufacturing facility or something? Should I be holding out for this to blow over, or snapping them up in expectation of the situation getting worse?
Title: Re: Is there some sort of ceramic cap supply crunch?
Post by: Coding Badly on Jun 15, 2018, 08:56 am

I assume it's the lead-up to this...
https://www.google.com/search?q=trump+tariff+electronics (https://www.google.com/search?q=trump+tariff+electronics)

Title: Re: Is there some sort of ceramic cap supply crunch?
Post by: ted on Jun 15, 2018, 09:10 am
or this
https://www.aliexpress.com/item/MCIGICM-4000pcs-0603-smd-capacitor-ceramic-22pf-100pf-10pf-10nf-100nf-1uf-capacitors-kit-sets-0/32840742728.html?spm=2114.search0204.3.2.21c32a22Jp3q3H&ws_ab_test=searchweb0_0,searchweb201602_4_10152_10151_10065_10344_10068_5723115_10130_5722815_10342_10547_10343_10340_5722915_10548_10341_5722615_10696_10084_10083_10618_10139_10307_5722715_10059_100031_10103_10624_10623_10622_5722515_10621_10620,searchweb201603_2,ppcSwitch_5_ppcChannel&algo_expid=5429e497-2587-49a0-a458-6d8c93162e87-0&algo_pvid=5429e497-2587-49a0-a458-6d8c93162e87&transAbTest=ae803_1&priceBeautifyAB=0 (https://www.aliexpress.com/item/MCIGICM-4000pcs-0603-smd-capacitor-ceramic-22pf-100pf-10pf-10nf-100nf-1uf-capacitors-kit-sets-0/32840742728.html?spm=2114.search0204.3.2.21c32a22Jp3q3H&ws_ab_test=searchweb0_0,searchweb201602_4_10152_10151_10065_10344_10068_5723115_10130_5722815_10342_10547_10343_10340_5722915_10548_10341_5722615_10696_10084_10083_10618_10139_10307_5722715_10059_100031_10103_10624_10623_10622_5722515_10621_10620,searchweb201603_2,ppcSwitch_5_ppcChannel&algo_expid=5429e497-2587-49a0-a458-6d8c93162e87-0&algo_pvid=5429e497-2587-49a0-a458-6d8c93162e87&transAbTest=ae803_1&priceBeautifyAB=0)


and

https://www.aliexpress.com/premium/smd%252Bcapacitors.html?site=glo&g=y&SearchText=smd+capacitors&tc=ppc&page=2&initiative_id=SB_20180614230547&prNum=24&user_click=y
Title: Re: Is there some sort of ceramic cap supply crunch?
Post by: Paul_KD7HB on Jun 15, 2018, 06:27 pm
All the circuit boards we build for a customer must be rohas compliant. My GM was ordering parts for an upcoming build. One capacitor was NOT available from any distributor. He has permission to use a non-rohas component if necessary, and so he ordered those. There were tens of thousands of non-compliant caps, but none of the other.

Paul
Title: Re: Is there some sort of ceramic cap supply crunch?
Post by: tinman13kup on Jun 16, 2018, 01:13 am
I was having problems finding 0.1uF X7R's in 0402. Digikey has them backordered until sometime this fall, and that was 2 months ago.

I think many places will simply take the easy route and just blame it on Pres Trump, but I think there's something else behind it.
Title: Re: Is there some sort of ceramic cap supply crunch?
Post by: Paul_KD7HB on Jun 16, 2018, 01:42 am
I was having problems finding 0.1uF X7R's in 0402. Digikey has them backordered until sometime this fall, and that was 2 months ago.

I think many places will simply take the easy route and just blame it on Pres Trump, but I think there's something else behind it.
We were warned about this up to two years ago from distributor reps and in industry periodicals. Blame the BIG companies, like automotive, for taking the message seriously and buying up what was available.

Paul
Title: Re: Is there some sort of ceramic cap supply crunch?
Post by: tinman13kup on Jun 16, 2018, 02:35 am
We were warned about this up to two years ago from distributor reps and in industry periodicals. Blame the BIG companies, like automotive, for taking the message seriously and buying up what was available.

Paul
That would explain the price spikes as well. Those backordered caps were $.10ea, unless you wanted an insane amount for a hobbyist. I figured a hundred would last me a while and think I got them for $.08.

I have some 0603's and 1206's, but sometimes it is nice to have something smaller.
Title: Re: Is there some sort of ceramic cap supply crunch?
Post by: wvmarle on Jun 17, 2018, 06:57 am
Out of curiousity I just now checked Digikey - quantity 1,000, X7R, ROHS compliant, 0805: just over US$0.04251  a piece.

The 0402 versions are cheapest at US$0.00753, then the 0603 at $0.00832. The 1206 I also see listed at a very reasonable US$0.02568 a piece at 1,000+ qty.

Really odd indeed those 0805 prices.
Title: Re: Is there some sort of ceramic cap supply crunch?
Post by: tinman13kup on Jun 17, 2018, 01:32 pm
Not sure where you found them, but I just checked and 0402 0.1uF-16V-10% are still at $.10ea, with one at $1.20ea (ouch). You get a price break for buying 10,000 of them, getting them for just over $.01ea but I don't need that many. Even if i drop a lot of them, that would make a carpet of capacitors on the floor.

It does irk me they are back in stock though, with mine still backordered. I'll have to look into cancelling the backorder and getting those in stock.

The 0805's do seem to have some odd pricing unless you get 10K of them.
Title: Re: Is there some sort of ceramic cap supply crunch?
Post by: wvmarle on Jun 17, 2018, 01:43 pm
Increase your order numbers a bit.

1 pc USD 0.10 each.
10 pcs USD 0.03 each.
100 pcs USD 0.01340 each.
1000 pcs USD 0.00753 each.
Price break table: https://www.digikey.com/product-detail/en/samsung-electro-mechanics/CL05B104KO5NNWC/1276-1509-1-ND/3889595 (https://www.digikey.com/product-detail/en/samsung-electro-mechanics/CL05B104KO5NNWC/1276-1509-1-ND/3889595)
Title: Re: Is there some sort of ceramic cap supply crunch?
Post by: tinman13kup on Jun 17, 2018, 01:56 pm
Increase your order numbers a bit.

1 pc USD 0.10 each.
10 pcs USD 0.03 each.
100 pcs USD 0.01340 each.
1000 pcs USD 0.00753 each.
Price break table: https://www.digikey.com/product-detail/en/samsung-electro-mechanics/CL05B104KO5NNWC/1276-1509-1-ND/3889595 (https://www.digikey.com/product-detail/en/samsung-electro-mechanics/CL05B104KO5NNWC/1276-1509-1-ND/3889595)
Did you see the availability? Only 25, but still does drop quite nicely with quantity. Unfortunately, the front page only gives min order pricing which is similar for quite a few different capacitors, but price breaks for quantity vary.
Title: Re: Is there some sort of ceramic cap supply crunch?
Post by: wvmarle on Jun 17, 2018, 02:57 pm
I ticked "in stock", didn't look in more detail. Anyway, this one (https://www.digikey.com/product-detail/en/murata-electronics-north-america/GRM155R71C103KA01D/490-1313-1-ND/587926) has 100,000 in stock for immediate shipping. Same price.
Title: Re: Is there some sort of ceramic cap supply crunch?
Post by: tinman13kup on Jun 17, 2018, 03:53 pm
Is 10nF close to 0.1uF?

Just kidding. Wish they would stay with the reduced numbers. Sometimes have to look twice to count all the zeros when 10nF is so much easier to glance and see.
Title: Re: Is there some sort of ceramic cap supply crunch?
Post by: wvmarle on Jun 17, 2018, 04:48 pm
Darn, missed a zero somewhere.

Luckily other 100 nF ones (https://www.digikey.com/product-detail/en/avx-corporation/0402YC104KAT2A/478-7888-1-ND/3881511) do appear to be available at good price, though indeed there's a note about fluctuating lead times due to market demand. Interestingly I didn't notice that with the other values.
Title: Re: Is there some sort of ceramic cap supply crunch?
Post by: Grumpy_Mike on Jun 18, 2018, 08:42 am
Quote
Interestingly I didn't notice that with the other values.
That is because industrial uses are very keen on, quite rightly, ordering exactly what the engineers designed and more importantly had in the product when it was compliance tested.

So these standard values can be in short supply but values close to it are not. When I worked for a set top box design company we once swapped out all the 0.1uF ceramic capacitors for 22nF ones because that value was marginally cheaper and re ran all the tests and it didn't make any difference to compliance or performance.

When you are buying these parts in the tens of millions small price differences accumulate into something quite big very quickly.