Author Topic: Has the world run out of 100nF Caps (Read 12049 times)

itdontgo · « **on:** February 12, 2018, 05:49:13 pm »

Anyone know why you can't buy reels of 100nF 0603 50V caps at the moment?!

mikeselectricstuff · « **Reply #1 on:** February 12, 2018, 05:58:22 pm »

because Digikey don't speak nanofarads - plenty of 0.1uf out there :

https://www.digikey.co.uk/products/en/capacitors/ceramic-capacitors/60?k=0.1uf+0603+50v&k=&pkeyword=0.1uf+0603+50v&pv7=1&FV=ffe0003c&mnonly=0&ColumnSort=0&page=1&stock=1&quantity=0&ptm=0&fid=0&pageSize=25

wraper · « **Reply #2 on:** February 12, 2018, 05:58:57 pm »

https://eu.mouser.com/Passive-Components/Capacitors/MLCCs/Multilayer-Ceramic-Capacitors-MLCC-SMD-SMT/_/N-bw5t7Z1yzvvqx?P=1z0wqusZ1yx4avvZ1yzmou6&Ns=Pricing%7c0
You certainly can buy them, although selection available is lower than normal.

itdontgo · « **Reply #3 on:** February 12, 2018, 06:13:38 pm »

There isn't I'm looking now for a few reels. 100nF (0.1uF if you like) 0603 50V X7R £100 a reel! Nobody has them only obscure expensive ones

itdontgo · « **Reply #4 on:** February 12, 2018, 06:16:35 pm »

http://uk.farnell.com/murata/grm188r72a104ka35d/cap-mlcc-x7r-0-1uf-100v-0603-reel/dp/2666522

mikeselectricstuff · « **Reply #5 on:** February 12, 2018, 06:18:23 pm »

Do you actually need 50V, or X7R ( vs. X5R ) ?
https://www.digikey.co.uk/product-detail/en/tdk-corporation/C1608X5R1H104K080AA/445-7456-2-ND/2732891

GeorgeOfTheJungle · « **Reply #6 on:** February 12, 2018, 06:26:00 pm »

Peak in demand: today all the people are decoupling their µCurrents' VGNDs.

wraper · « **Reply #7 on:** February 12, 2018, 06:34:12 pm »

Quote

There isn't I'm looking now for a few reels. 100nF (0.1uF if you like) 0603 50V X7R £100 a reel! Nobody has them only obscure expensive ones

Not cheap but still half of that goo.gl/YyMifW

chrisl · « **Reply #8 on:** February 12, 2018, 07:01:53 pm »

https://www.digikey.co.uk/product-detail/en/murata-electronics-north-america/GCM188R71H104KA57D/490-4779-2-ND/1641653
£58.60

BrianHG · « **Reply #9 on:** February 12, 2018, 09:00:53 pm »

I win! By 4-8 fold...

https://www.ttiinc.com/content/ttiinc/en/apps/part-detail.html?mfgShortname=KEM&partsNumber=C0603C104M5RACTU&utm=704

£14.70 for 4k. Over 300k in stock...

jaycee · « **Reply #10 on:** February 12, 2018, 09:05:38 pm »

As Mike said, any reason to require 50V when a 100V part will do ? Is the dielectric particularly voltage dependant ?

BrianHG · « **Reply #11 on:** February 12, 2018, 09:09:51 pm »

Quote from: jaycee on February 12, 2018, 09:05:38 pm

As Mike said, any reason to require 50V when a 100V part will do ? Is the dielectric particularly voltage dependant ?

Too expensive in 0603 and x7r is hard to find.

BrianHG · « **Reply #12 on:** February 13, 2018, 11:12:44 pm »

Quote from: BrianHG on February 12, 2018, 09:00:53 pm

I win! By 4-8 fold...

https://www.ttiinc.com/content/ttiinc/en/apps/part-detail.html?mfgShortname=KEM&partsNumber=C0603C104M5RACTU&utm=704

£14.70 for 4k. Over 300k in stock...

Holy shit, since I posted this yesterday, someone purchased over 140k pieces!!!

mikeselectricstuff · « **Reply #13 on:** February 14, 2018, 12:27:41 am »

Quote from: BrianHG on February 12, 2018, 09:09:51 pm

Quote from: jaycee on February 12, 2018, 09:05:38 pm
As Mike said, any reason to require 50V when a 100V part will do ? Is the dielectric particularly voltage dependant ?
Too expensive in 0603 and x7r is hard to find.

I meant do you need it as high as 50V - for 25v, price and availability is somewhat better.
Unless you need high temperature operation, X5R (+85 deg.) is fine and may be cheaper.
( not to be confused with Y5V - some people mistakenly think the 5 is the "crappy dielectric" indicator)

BrianHG · « **Reply #14 on:** February 16, 2018, 03:34:23 pm »

Another day, and somebody purchased the entire remaining stock of 50v caps I found.
I know of another 30k pieces of 50v 0.1uf x7r in stock at the same price....
And another 16k pieces for a few % more already in Europe.

But, holy crap man, everywhere else, these damn caps cost exactly 10x as much. I wonder if someone has made a mistake with the decimal place.

mikeselectricstuff · « **Reply #15 on:** February 16, 2018, 03:37:19 pm »

Time to figure out how many decoupling caps you _actually_ need...!
BTW still seems to be plenty of 47nf about....

snarkysparky · « **Reply #16 on:** February 16, 2018, 03:51:02 pm »

Where i work there is talk of a worldwide shortage of chip capacitors. Anybody else heard of this ?

Niklas · « **Reply #17 on:** February 16, 2018, 08:40:06 pm »

Yes, we have seen both cancelled orders and increased lead times for both ceramic capacitor and some SMD resistors during the last year. Last Friday came questions about second sources for capacitors from Murata, one of our tier 1 preferred suppliers.
Also PCB laminate (6 layer rigid flex) has seen increased lead times and even for small prototype batches we must pay weeks in advance to secure the material for production.

HSPalm · « **Reply #18 on:** February 17, 2018, 12:29:36 am »

Yup here also. This is for automotive qualified but I guess it's part of the same shortage. The recommendation is to design with smaller parts as the manufacturers will prefer to make more caps per material. The message is being pushed through sales channels for a while, from AVX, kemet, murata...

Macbeth · « **Reply #19 on:** February 17, 2018, 01:31:57 am »

Is this just the Chinese New Year phenomenon at work? Give it 2 weeks and production returns to normal?

ejeffrey · « **Reply #20 on:** February 17, 2018, 05:59:28 am »

Quote from: snarkysparky on February 16, 2018, 03:51:02 pm

Where i work there is talk of a worldwide shortage of chip capacitors. Anybody else heard of this ?

Yes. Every build I have done in the past 3-4 months has had multiple components out of stock at all distributors. Bread and butter stuff, mostly capacitors -- ceramic and tantalum, but even thick film resistors in common values. So far, there has always been an easy substitute -- an equivalent part from a different manufacturer or a different voltage or tolerance rating that was acceptable. Its just annoying to have to go hunt down alternatives.

Quote

Is this just the Chinese New Year phenomenon at work? Give it 2 weeks and production returns to normal?

No.

sergeil · « **Reply #21 on:** April 22, 2018, 10:48:28 am »

There appears to be a real shortage of multilayer ceramic caps across the board. There's a report here: https://www.ttiinc.com/content/ttiinc/en/resources/marketeye/categories/passives/me-zogbi-20180302.html

On our latest build lots of common ceramic components, especially in smaller packaged, were out or near-out. Digi-key now runs a general shortage warning for these components.

Anyone got more info on this and advice for "smaller" players to deal with this?

Niklas · « **Reply #22 on:** April 22, 2018, 12:49:13 pm »

The company I work for is large and we place orders based on production forecasts several months in advance. Even though we have had issues, often with less than a months notice, of postponed component deliveries.
The recommendations we have received from global purchasing is to:
- not cancel or postpone planned deliveries
- follow up on deliveries and get confirmed delivery dates
- try to secure safety stocks for 6-12 months of production

For design engineers there is also a recommendation to not use odd packages that are single source. Go as generic as possible to not limit your options for second sources. Diodes had a fire in a plant little more than a year ago that was "challenging" for products with PowerDI packages, better to go for more commonly available SMA or SMB.
Also avoid anything larger than 0603, if possible both for second source and technical specs. Larger package equals more raw material.

exmadscientist · « **Reply #23 on:** April 22, 2018, 06:08:08 pm »

Quote from: the article

the added loss of a key MLCC vendors in Y5V dielectric has placed added pressure on prices

Anyone know what this is referencing? I've seen a couple mentions recently of a major MLCC discontinuation but no one has been specific enough about it for me to find the actual announcement/PCN.

Burczyk · « **Reply #24 on:** April 24, 2018, 01:39:02 pm »

Quick search on ebay for 100nF caps returned only one auction...
https://www.ebay.com/itm/100nf-ceramic-capacitor-RARE-Price-reduced/302711136546?hash=item467afd6122:g:6xwAAOSwkVxa2d~E
Unobtainium!

I guess I will have to connect two 56nF in parallel then...


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Author Topic: Has the world run out of 100nF Caps (Read 12049 times)

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