Capacitor Manufacturer/Distributor Sites:
Other Commercial Sites:
Noncommercial Sites:Literature Of Various Sorts:
The Capacitor Book
Kaiser, Cletus J.
C. J Publishing, ISBN 0-9628525-3-8
A very good introduction to capacitors if a little short on hard numbers at times. One of the few books of its kind commonly in print.
Passive Components-A Users Guide
Butterworth-Heinemann, ISBN 0-7506-0229-5
Some information on capacitors.
Troubleshooting Analog Circuits
Pease, Robert A.
Butterworth-Heinemann, ISBN 0-7506-9184-0
Lots of stuff on electronics people mostly learn the hard way, including some on capacitors.
Electronic Components: Selection and Application Guidelineshttp://www.hwsams.com/
Wily Inter science, ISBN 0-471-1189-723
Has extensive information on capacitors, including construction, standards, markings (including military and Japanese), and even history.
The author also has a book on component identification:
Component Identifier and Source Book 2nd edition
Howard W Sams Publications, ISBN 0-7906-1159-7
Selection and Application of Capacitors
Moynihan, John D., ed.
Components Technology Institute
904 Bob Walleye Ave., Suit 117
Huntsville, Alabama 35801
Recommended by Plastic Capacitors Inc. (see below). Contains good information not easily found elsewhere on a variety of
topics, including calculation of temperature rise in electrolytic capacitors, radiation tolerance, and failure analysis methods.
Passive Electronic Components Handbook
Heard about it, haven't read it.
Handbook of Chemistry and Physics
Lide, David R.
Chemical Rubber Company Publishing Company, ISBN 0849304792 (79th ed.)
The motherload for
science data tables, including the dielectric constants of a wide range of materials. About $130 new, but you will probably be able to pick one up at secondhand book store.
This list is hardly inclusive,
mostly just the ones I found helpful, or were otherwise of special interest. Someday I might even put it in alphabetical order. I have found the usual number of typos, misplaced decimal points,
and mislabeled tables, so beware. Donīt be surprised if you canīt reach all the sites listed. I know that link-rot is already setting in and make corrections when I find changes.
Capacitor Manufacturer/Distributor Sites:http://www.expotuscomponents.com/
Expotus Components Limited (ECL) is a small distributor sell specialised components to loudspeaker makers. They have worked up a components
technical library plus a small but growing list of relevent links (I may be the first on it). http://www.eichhoff.com/
Eichhoff Electronics makes line-filter capacitors (and the filters they are used in) in a wide variety of types and packages.http://www.paktran.com/
Information on several film types. ITW
Paktron is a big proponent of replacing ceramics with large-value film capacitors in some applications, and this site includes a number of graphs comparing the two.
Information on several film types, application information, and application
software. Much information on the theory and practice of line-filter capacitors (some in .pdf).
Ceramics and tantalums.
Includes film, ceramic, porcelain; "Ask a Capacitor Expert" feature; most information available only by mail, however.
>nacc-mallory now seems to be gone, and their URL sends you to a porn site. Vishay seems to have picked up at least some of their product lines.<http://www.avxcorp.com/
Ceramics, tantalums, glass, most information in .pdf format. The various
AVX-Kyocera companies make tantalum and ceramic power supply bypass capacitors and this site has many papers on their theory and application. It is perhaps the largest collection on the web. There is also
information on a variety of special products such as glass capacitors, thin-film microwave capacitors, very large multi-chip ceramics for switching power supplies, and a cross reference. More recently, AVX has
added film capacitors to their line. http://www.cornell-dubilier.com/
Mica, aluminum and tantalum electrolytics, film, and paper-film. Their catalog, Mica Capacitor Databook, has good information on mica capacitors.
Java applets and .pdf files on figuring temperature rise in aluminum electrolytics. http://www.vishay.com
Vishay makes a variety of capacitors, including OS-CONS. The site has information for estimating the life of OS-CON aluminums.http://www.kemet.com/
Kemet makes ceramic and tantalum capacitors and their
site has a number of interesting .pdf papers on their construction and use, plus some nice booklets you can request. Also, very good cross reference and software.
Taiyo Yuden is a major manufacturer of multilayer ceramic capacitors (MLCC),
although they are not yet well known outside of Japan. Their web site is not large but you can at least ask for a catalog.http://www.spectrumcontrol.com/
Spectrum Control Inc. is mostly known as a maker of EMC products such as
filtered connectors and power-line filters. However, they also sell a broad range of ceramic capacitors, including high voltage, SMPS, and microwave capacitors.http://www.atceramics.com/
American Technical Ceramics is a specialist in ceramic and porcelain RF capacitors,
as well as general-purpose ceramics.http://condenser.com
Condenser Products is a specialist in large, high-voltage (>100 kV) film and paper-film capacitors.http://www.dei2000.com
Dearborn Electronics makes both standard and custom capacitors in a wide variety of film and paper-film dielectrics. The site has some interesting
Jennings Technology makes gas and vacuum capacitors.http://www.presidiocomponent.com
Presidio Components makes a variety of specialty ceramic capacitors, including large size, high voltage, high temperature, and low temperature. Their web site is
"under construction". Also try:
Oren Elliot Products is a major maker of air variable capacitors.
Home of the polymer-electrolyte OS-CON (aluminum) and POSCAP (tantalum) capacitors.
Rubyconīs offering include several advanced liquid-electrolyte aluminum capacitors
with ESRs approaching that of polymer-electrolyte capacitors.http://www.plasticcapacitors.com/
Plastic Capacitors Inc. makes high-voltage film capacitors. Their site has several interesting technical bulletins, including one on the replacement of obsolete
Component Research Company
specializes in Mil-spec film capacitors in a variety of dielectrics, including Teflon. http://www.caps.com/
Home of the MultiCap, opinions on the use of capacitors in high-end audio equipment.http://www.qnx.com/~danh/caps.html
More opinions on the use of capacitors in high-end audio equipment.
Good information on capacitors in general and on ceramic in particular.http://www.elna-america.com/
Electrolytics, including double-layer capacitors.
Speaking of double-layer capacitors, the PowerCache people claim to have the largest "ultracapacitors" in production, to 2700
Farads. Like similar capacitors, the basic voltage is 2.3 volts per cell.http://www.voltronicscorp.com/
A big name in trimmer capacitorshttp://www.evanscap.com/
Novel electrolytic and double-layer capacitors.
KD Components has a variety of specialty ceramic capacitor products, including high-voltage, high-temperature,
large sizes for switch-mode power supplies, and proprietary dielectrics.http://www.johanson-caps.com/
Johanson Dielectrics is another specialist in ceramics. In addition to the usual chip capacitors, there are a variety of large single and multi-chip leadframe
styles for switch-mode power supplies (both through-hole and SMD), and single layer SMD ceramics for RF/microwave applications.http://www.chemi-con.com/main/technical/u7002/guidelines
United Chemi-con has extensive information on using aluminum electrolytics.http://www.nichicon-us.com/
Extensive information on construction and application of aluminum electrolytics.http://www.electrocube.com/
This site has a capacitor mini-faq worth looking at.http://www.paccom.com/
See the PACCOM "Reference Library".
Technical article on motor run and start capacitor usage.
Interesting information on a variety of electronics topics.
I just like the name.
Other Commercial Sites:http://www.eenet.com.pass/dir/caps.html
Long list of capacitor manufacturer's names, addresses, and URLs.http://www.ttiinc.com/page/home
Owned by TTI Inc, this site has a feature called MarketEye that covers component news.
An excellent article on dielectric absorption
by National Semi's Bob Pease, possibly the best information presently in "print". Check out his other articles in Electronic Design magazine (and buy his books) as well.http://fcim.csdc.com/fcimis/compid/caps/cap.html
Includes a guide to mil-spec capacitor identification.http://www.xtronics.com/kits/ccode.htm
Some capacitor marking standards, including military.
Faradnet is still under construction but is becoming a significant resource for capacitor fans. The main features right now
include a huge list of about 1400 capacitor manufacturers around the world with links to their web sites (if any) and an equally huge list of references to capacitor literature (mostly on electrolytics however). A
messaging board has recently been added. http://www-library.itsi.disa.mil/
Source for MIL standards. Includes search engine.
The Electronics Industry Association has established standards for capacitor sizes, inspection, testing, materials, and a lot of other
stuff. This site has, among other things, a searchable database of current standards. Actually, the search engine does not seem to work all that well and you are better off just downloading the list and
doing a keyword search with your web browser (It's less than 200k). The standards list file links to several standards description files, so search while on-line to reach those. The EIA seems especially
interested in ceramic and tantalum capacitors but other kinds are also represented in the various standards.
Among the standards of interest are EIA-198-1E, which contains all the details on ceramic capacitor styles
and dielectric classes, including performance, markings, testing, and dimensions. It also references relevant IEC, MIL, and JIS standards. If you want to be a true capacitorologist you need these.http://www.global.ihs.com/
Global is a distributor of EIA, IEC, and
MIL standards, as well as those of other organizations. Global has a good searchable database, and you can order online. Standards don't come cheap, something like several dollars a page seems typical, plus
shipping. This should not be surprising, many organizations make much or all of their living from the sale of standards.
Unlike the EIA, the IEC will sell its standards direct (prices are shown in Swiss Franks). It has a pretty good search
system. The IEC can now deliver its standards in electronic form. IEC 60062 and its updates have the capacitor and resistor marking standards. http://www.apcc.com/
APC is a maker of uninteruptable power supplies. The site includes a glossary of
power terms. Some good information, although many definitions are terse at best.http://www.power-one.com/
Includes some information on IEEE C62.41 (IEEE 587).
Reprint of article about capacitor spice modeling.http://www.flippers.com
Johnīs Jukes Ltd. is sort of the super-site for fans of pinball machines, juke boxes,
and video games. The company does repairs, sells parts and manuals, and maintains a web site with lots of information. They also sell some test equipment, including the Bob Parker ESR Meter. I havenīt
used the meter myself, but it has been getting some good ink in the newsgroups. The site includes several pages on using the meter, and background information on failures of electrolytic capacitors due to high
ESR. The Bob Parker ESR Meter is also known as the Dick Smith ESR Meter after the Australian electronics chain store where it is also sold. See:
This Angela Instruments site has information on reforming old aluminum electrolytics.
This totally awesome site is oriented around semiconductors, but has a fair amount of information about passives as well. A search engine will help you find
it. Anton Kruger is (or was) the resident expert on discrete components, and has put together one of the better collections of capacitor information on the web.
Tips on using electrolytics.
Some usefull capacitor stuff, not all in english.
Auction site for audio hobbyist.
The Engineersī Club has software demos, shareware, and many links to other engineering sites.
Information on capacitor testing, including safety issues.http://en.wikipedia.org/wiki/Main_Page
A really surprising amount of quality information on capacitors.
Information on capacitors in antique radios.http://intrepidvideo.bizland.com/captest.htm
Information of testing capacitors.
More capacitor tricks that might get you killed. Altair is full of way cool geek stuff.
Another site with information on old capacitors.
Office of System Safety and Mission Assurance. Includes more stuff on MIL capacitors than you would ever want to know,
most of it confusing. Just search on "capacitor".
Don't try this at home.http://www.eskimo.com/~billb/emotor/cap1.txt
IEEE site, web home of several journals.
Links, all sorts.http://www.engr.unl.edu/eeshop/netsites.html
More links, all sorts.http://www.electronics-oems.com/ecomponents-cc.html
Even more links. http://www.26thcentury.com/~buc/Info/
More links yet.http://kitsrus.com/back.html
Nothing to do with capacitors. Visit it anyhow.
A site with all kinds of electronics information (including capacitors of course), including a long list of links.
Worth a look. Some applications information.
High voltage caps for amatures.
Literature Of Various Sorts:
Analog Dialog 30-2 (1996) from Analog Devices
"Ask the Engineer" #21 by Steve Guinta
A good look at common capacitor types for analog applications by
the people who do that stuff. I think this is on their web site.
Capacitor Model Accounts for Temperature, Bias, by Debra Horvitz
Improved capacitor SPICE model.
Electronic Engineering Master (EEM)
Four-volume set of component and equipment manufacturers catalog pages, including lots on capacitors, plus a list of manufacturers in each category. If you don't have
this you probably don't belong in electronics anyhow. You get it free once a year by subscribing to Electronic Products magazine. If you need something strange the high-
volume vendors don't have (like a 100 kV Teflon capacitor), this is a good place to start looking.
PowerConversion & Intelligent Motion magazine
1-805-650-7070, fax: 1-805-650-7054
Frequent articles on
capacitors, mostly oriented around power applications like snubbers, motor starting, and switching power supplies. The annual buyer's issue (December) has a table of capacitor manufacturers and the kind of parts
they make. The table in the last issue is a little sparse however.
Although controversial, 217 is an important (and the most-often quoted) source of information on component
reliability under various operating conditions. May be obsolete by now.
If you don't want to buy the book, there are two magazine articles on reliability. They are both based on 217:MIL-HDBK-198
Designing For Reliability: A Checklist, by Ki Punches
Failure Analyses And Testing Yield Reliable Products, by Arthur F. Upham
Capacitors, Selection and Use of
Itīs on the web in PDF form.
Use local bypass capacitors to meet rigorous high-speed-system demands, by Bill Travis
Good article on power-supply bypass
capacitors for digital systems. Includes references to other books and articles.