Has the world run out of 100nF Caps - Page 1
Forum section: electronics / projects

author: itdontgo
author_rank: Regular Contributor
timestamp: February 12, 2018, 05:49:13 pm
content: Anyone know why you can't buy reels of 100nF 0603 50V caps at the moment?!

author: mikeselectricstuff
author_rank: Super Contributor
timestamp: February 12, 2018, 05:58:22 pm
content: 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

author: wraper
author_rank: Unknown
timestamp: February 12, 2018, 05:58:57 pm
content: https://eu.mouser.com/Passive-Components/Capacitors/MLCCs/Multilayer-Ceramic-Capacitors-MLCC-SMD-SMT/_/N-bw5t7Z1yzvvqx?P=1z0wqusZ1yx4avvZ1yzmou6&Ns=Pricing%7c0You certainly can buy them, although selection available is lower than normal.

author: itdontgo
author_rank: Regular Contributor
timestamp: February 12, 2018, 06:13:38 pm
content: 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

author: itdontgo
author_rank: Regular Contributor
timestamp: February 12, 2018, 06:16:35 pm
content: http://uk.farnell.com/murata/grm188r72a104ka35d/cap-mlcc-x7r-0-1uf-100v-0603-reel/dp/2666522

author: mikeselectricstuff
author_rank: Super Contributor
timestamp: February 12, 2018, 06:18:23 pm
content: 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

author: GeorgeOfTheJungle
author_rank: Super Contributor
timestamp: February 12, 2018, 06:26:00 pm
content: Peak in demand: today all the people are decoupling their µCurrents' VGNDs.

author: wraper
author_rank: Unknown
timestamp: February 12, 2018, 06:34:12 pm
content: QuoteNot cheap but still half of thatgoo.gl/YyMifW

author: chrisl
author_rank: Regular Contributor
timestamp: February 12, 2018, 07:01:53 pm
content: https://www.digikey.co.uk/product-detail/en/murata-electronics-north-america/GCM188R71H104KA57D/490-4779-2-ND/1641653£58.60

author: BrianHG
author_rank: Super Contributor
timestamp: February 12, 2018, 09:00:53 pm
content: 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...

author: jaycee
author_rank: Regular Contributor
timestamp: February 12, 2018, 09:05:38 pm
content: As Mike said, any reason to require 50V when a 100V part will do ? Is the dielectric particularly voltage dependant ?

author: BrianHG
author_rank: Super Contributor
timestamp: February 12, 2018, 09:09:51 pm
content: Quote from: jaycee on February 12, 2018, 09:05:38 pmToo expensive in 0603 and x7r is hard to find.

author: BrianHG
author_rank: Super Contributor
timestamp: February 13, 2018, 11:12:44 pm
content: Quote from: BrianHG on February 12, 2018, 09:00:53 pmHoly shit, since I posted this yesterday, someone purchased over 140k pieces!!!

author: mikeselectricstuff
author_rank: Super Contributor
timestamp: February 14, 2018, 12:27:41 am
content: Quote from: BrianHG on February 12, 2018, 09:09:51 pmI meant do you need it ashighas 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)

author: BrianHG
author_rank: Super Contributor
timestamp: February 16, 2018, 03:34:23 pm
content: 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.

author: mikeselectricstuff
author_rank: Super Contributor
timestamp: February 16, 2018, 03:37:19 pm
content: Time to figure out how many decoupling caps you _actually_ need...!BTW still seems to be plenty of 47nf about....

author: snarkysparky
author_rank: Frequent Contributor
timestamp: February 16, 2018, 03:51:02 pm
content: Where i work there is talk of a worldwide shortage of chip capacitors. Anybody else heard of this ?

author: Niklas
author_rank: Frequent Contributor
timestamp: February 16, 2018, 08:40:06 pm
content: 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.

author: HSPalm
author_rank: Regular Contributor
timestamp: February 17, 2018, 12:29:36 am
content: 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...

author: Macbeth
author_rank: Super Contributor
timestamp: February 17, 2018, 01:31:57 am
content: Is this just the Chinese New Year phenomenon at work? Give it 2 weeks and production returns to normal?

author: ejeffrey
author_rank: Super Contributor
timestamp: February 17, 2018, 05:59:28 am
content: Quote from: snarkysparky on February 16, 2018, 03:51:02 pmYes. 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.QuoteNo.

author: sergeil
author_rank: Unknown
timestamp: April 22, 2018, 10:48:28 am
content: 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.htmlOn 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?

author: Niklas
author_rank: Frequent Contributor
timestamp: April 22, 2018, 12:49:13 pm
content: 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 productionFor 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.

author: exmadscientist
author_rank: Frequent Contributor
timestamp: April 22, 2018, 06:08:08 pm
content: Quote from: the articleAnyone 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.

author: Burczyk
author_rank: Contributor
timestamp: April 24, 2018, 01:39:02 pm
content: 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~EUnobtainium!I guess I will have to connect two 56nF in parallel then...

author: k4rlhp
author_rank: Unknown
timestamp: April 24, 2018, 06:50:27 pm
content: Quote from: ejeffrey on February 17, 2018, 05:59:28 amIt does look like it's not about capacitors only.Just received a shipment I placed on Farnells for 14 different items. 6 are put on backorder and I only received 8... Argh! I painstakingly chose the components based on reported stock availability. This stuff is killing me.I'm missing 1Gohm and 1 ohm resistors, Dual matched NPN's in the BC847 flavor, DPDT Switches and SP3T slide Switches, Miniature integrated DC-DC modules. So nothing really special.I don't mind if something is out of stock, however, it seems more that these guys are not in control of their stock inventory if over 40% of items are quoted with wrong stock availability.Silly thing is, I built the order on mouser, they reported some components missing on the web so I checked on farnell's and as these were reported in stock (chose ones with in 100's or 1000's in stock), placed the order there. Initially I thought these mouser guys were not on top of the game by not having fairly common items but now it looks more like Mouser guys are in control of their stock so you know what you get or don't get.

author: Marco
author_rank: Super Contributor
timestamp: April 24, 2018, 07:06:58 pm
content: Did everyone just decide at once that reducing their stock overhead was a good idea to increase profit? Management fad run wild?

author: SiliconWizard
author_rank: Super Contributor
timestamp: April 24, 2018, 07:12:43 pm
content: I have FDC638P's on backorder with Mouser, there is practically no stock anywhere and barely 7 on cut tape at Digikey.

author: saike
author_rank: Regular Contributor
timestamp: April 24, 2018, 07:38:10 pm
content: I thought for a long time that it was just companies here in the UK trying to reduce costs by cutting their stock levels.Stuff I ordered that was listed as in stock at RS, arrived direct from Japan. I thought maybe this was a new way for them of doing business. Just buying stuff in as needed and passing it on with a price mark up.I can remember when I used to praise RS for being able to supply nearly 100% of every order I made from stock. Things have changed a lot since then, it seems it may not be entirely their fault.

author: Howardlong
author_rank: Super Contributor
timestamp: April 24, 2018, 08:50:09 pm
content: I guess that explains why I had a bunch of non-delivered reals from Farnell a few weeks ago at my assemblers. Thankfully this is a regular run and there was enough residual stock from about a dozen previous runs to cover the missing items.I am not so sure I’ll be as lucky next run, this seems to be pretty bad, in some ways similar to the shortages we saw around 2011/2012 or so after the Japanese earthquake and tsunami disrupted supply chains.

author: Siwastaja
author_rank: Super Contributor
timestamp: April 26, 2018, 03:30:16 pm
content: Quote from: k4rlhp on April 24, 2018, 06:50:27 pmTotally incorrect stock numbers, or a broken stock backend code, seems to be a Farnell-specific issue (in addition to the manufacturing crisis, of course, which is a separate thing). After over a decade of being a Farnell customer, I almost completely stopped using them about a year ago for this specific reason. Not surprised to hear it's still going on.Specifically, about 20-30% of the products that were available in quantities for the whole design cycle time (months), and then available just minutes before you order (while adding them to cart), magically disappear after your order is in, and are in backorder.I have had such horrible service from Farnell that I wouldn't be too surprised to find out they do this on purpose. It would be kinda fraudulent (called bait-and-switch), but would make sense a lot: it's a compelling factor that they seem to have better stock than their competitors, and once you have ordered, you are already "locked in" and are very unlikely to cancel your order - or even cancel the backordered items!Still, it's most likely their information technology is just broken. Another reason for ditching them was that I don't have hours of cumulated time available for a simple 100-line order just to wait for the website to respond after blocking for minutes, then try again after it crashes, try to sidestep the non-working BOM/CSV import by iteratively halving the list until it passes without crashing the whole website, and so on...Since I prefer fair play, customer service, and responsive, working website, I have gone with Digikey as my preferred distributor, and have not looked back. Mouser seems to work as well without these kind of issues.

author: jmelson
author_rank: Super Contributor
timestamp: April 26, 2018, 07:29:07 pm
content: Quote from: Siwastaja on April 26, 2018, 03:30:16 pmWell, if I can find a part somewhere else, i have NO PROBLEM canceling the order that is on backorder.QuoteDigi-Key at least seems to be honest about what is in stock. A few times there has been an issue where the actual stock in the warehouse is not equal to what they think they have, but it is rare. But, they too are either having trouble keeping parts in stock or are reducing stock levels on less-common items.I do buy connectors from a NON-stocking distributor who has prices HALF of what Digi-Key charges. But, the downside is I have to order stuff 8-10 weeks in advance, and sometimes it takes 12+ weeks to come in. But, that lower price does make it worthwhile to stock a bunch. And, if I run short, I can always buy a few at Digi-Key.Jon

author: Alex Eisenhut
author_rank: Super Contributor
timestamp: April 27, 2018, 12:21:22 pm
content: Quote from: Burczyk on April 24, 2018, 01:39:02 pmIs this a joke?https://www.digikey.ca/products/en/capacitors/ceramic-capacitors/60?k=0.1uf&k=&pkeyword=0.1uf&pv7=2&pv1989=0&FV=ffe0003c&quantity=0&ColumnSort=0&page=1&stock=1&pageSize=25

author: JPortici
author_rank: Super Contributor
timestamp: April 27, 2018, 12:34:22 pm
content: Quote from: Siwastaja on April 26, 2018, 03:30:16 pmhappens from time to time with mouser as well. Last time for me was about one year ago, Murata 0603 100n 50V, there were tens of thousand available just before hitting "order"to be fair, i then checked that and related partnumbers on all the major distributors, they had gone out of stock everywhere (and some hundred thousands on backorder) so i guess a big fish was doing shopping that same daywith farnell? you are correct. luckily for me this time i just needed about 50 of those caps to assemble some prototypes and keep a few spares, i phoned them and they just sent 50 from another PN

author: Cerebus
author_rank: Super Contributor
timestamp: April 27, 2018, 01:59:54 pm
content: Quote from: Alex Eisenhut on April 27, 2018, 12:21:22 pmYou've picked any dielectric, any size, any voltage. Now try 100nF, X7R and 0603, any voltage.https://www.digikey.ca/products/en/capacitors/ceramic-capacitors/60?k=0.1uf&k=&pkeyword=0.1uf&pv17=5&pv17=466&pv17=416&pv16=5&FV=ffe0003c%2C1c0002%2C1f140000&quantity=0&ColumnSort=0&page=1&stock=1&pageSize=2512 parts in total, prices range from $0.14 to $1.10 CAD,each.

author: JPortici
author_rank: Super Contributor
timestamp: April 27, 2018, 02:50:39 pm
content: Fear not , mouser is restocking Murata. millions of them in order with 38fuckingweeks of lead time0402, couple of millions soon:next monday -https://www.mouser.it/ProductDetail/Murata-Electronics/GCM155R71C104KA55D?qs=sGAEpiMZZMvsSlwiRhF8qh1EJ90GfnwbwozyHSKJYn4%3d0603, couple hundred thousands:mid may -https://www.mouser.it/ProductDetail/Murata-Electronics/GCM188R71E104KA57D?qs=sGAEpiMZZMvsSlwiRhF8qmjL7QNDLPrPG%252bexFjXpseY%3dmid june -https://www.mouser.it/ProductDetail/Murata-Electronics/GRM188R71H104JA93D?qs=sGAEpiMZZMvsSlwiRhF8qqDvUs8Zl92X7ViVvWCj%2f3Y%3di wonder how long they're going to lastis there a website that keeps track of stocks that also show the graph? i think octopart used to do it..

author: drussell
author_rank: Super Contributor
timestamp: April 27, 2018, 04:42:21 pm
content: Quote from: Cerebus on April 27, 2018, 01:59:54 pmWell, it is expected that those "fancy" ones like the 4-terminal combination X/Y EMI suppression caps, the ones with special, high-reliability "soft" terminations or the mil-spec lead-tin non-ROHS specialized ones, etc. would cost more than the 14 or 15 cents each general purpose ones.

author: splin
author_rank: Frequent Contributor
timestamp: April 28, 2018, 02:34:14 am
content: Quote from: Cerebus on April 27, 2018, 01:59:54 pmIf it's for decoupling then what about a Samsung .22uF, 16V X7R? Digikey claim a stock of 812,000 and they are only $.00863.https://www.digikey.com/product-detail/en/samsung-electro-mechanics/CL10B224KO8NNNC/1276-1112-2-ND/3886770They also have 262,000 similar Yaego parts @ $.00993

author: Cerebus
author_rank: Super Contributor
timestamp: April 28, 2018, 11:45:56 am
content: Quote from: splin on April 28, 2018, 02:34:14 amIf you're doing it on your bench, where you know what each part does, fine. If you're doing it for a production run of 10,000 colour tellies and1) You haven't qualified the part2) Not all the 100 nF, 50V, 0603 parts in the designaredecoupling caps,3) The shift in the effect of capacitance due to DC bias on a 50V part versus a 16V part hasn't been qualified,4) etc. etc.it's not so simple. Do you want to gamble on 10,000 new tellies becoming returns, or to do the NRE to qualify the part substitution (including EMI compliance, lifetime testing, etc.)?

author: grouchobyte
author_rank: Regular Contributor
timestamp: April 29, 2018, 02:24:35 pm
content: For passive these guys are pretty decent and they will deliver fast and cheap, 7.7 million in stockhttps://lcsc.com/product-detail/Multilayer-Ceramic-Capacitors-MLCC-SMD-SMT_100nF-104-10-50V_C14663.html@grouchobyte

author: wraper
author_rank: Unknown
timestamp: April 29, 2018, 03:13:20 pm
content: Quote from: grouchobyte on April 29, 2018, 02:24:35 pmThat's some crazy price. 3.6 cents @ qty of 10k for some common yageo MLCC is insane. If you want a reel of 4000, that's $154. Actual value is less than 10% of that.

author: Cerebus
author_rank: Super Contributor
timestamp: April 29, 2018, 04:16:58 pm
content: Quote from: wraper on April 29, 2018, 03:13:20 pmAgreed about thevalue, but at the moment that's a goodpricein the face of what others are charging.

author: Simon
author_rank: Unknown
timestamp: July 13, 2018, 08:12:08 pm
content: Quote from: k4rlhp on April 24, 2018, 06:50:27 pmFarnell are a bunch of useless wankers. They show stock on their site for hours after it was actually purchased. I now no longer use them and they are aware of the problem on their site and have been for years. I also only buy from RS if the order value is low as they are also hopeless because the availability of stock is not part of the parametric search so i have to wade through results to find the 10% that are in stock. As much as I would like to involve UK companies in my work RS and Farnell can both go and screw themselves. Anything big goes straight to mouser and as due the shortages I am buying by the reel that means mouser most of the time.British business does seem to have a massive knack for shooting itself in the foot. I have been raging at Farnell for years about the amount of time in stock product is not in stock and they could clearly not give a fuck so I don't use them anymore.

author: Simon
author_rank: Unknown
timestamp: July 13, 2018, 08:16:47 pm
content: Quote from: BrianHG on February 13, 2018, 11:12:44 pmThere is a shortage worldwide, lead-times on resistors and capacitors is longer than normal and we are now talking up to 2 years. Royal ohm has put itself at the exclusive service of an auto maker for the next 2 years. All parts i order for prototypes are now ordered by the reel with a view to be able to supply a contract assembler if things get that bad.