- Capacitor rules - 3 Updates
| Jasen Betts <usenet@revmaps.no-ip.org>: Mar 02 12:17AM > capacitor. Having gone to digikey, mouser, and newark none of them seem > to have the item I'm looking for in stock. > What are the rules about alternate values? lower percentage good, higher voltage good. same or close capacitance good, sometimes more capacitance is good. > 1uf,10v, +-20%. > The DIP style cap that the board uses isn't in stock anywhere so would I > be able to substitute this cap for 1uf, 20v, +-20%? DIP: I guessing you mean radial pins. With tantalum going up in voltage leads to improved reliability if this is a 5V or 8V supply decoupling capacitor the 20V part is much better suited. On the other hand inexpensive 1uF ceramic capacitors are now available and might be an even better substitute (even better reliability), but that depends mostly on the power supply being able to start with the reduced series resistance presented by the ceramic parts. -- Jasen. pǝsɹǝʌǝɹ sʇɥƃᴉɹ ll∀ |
| Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net>: Mar 01 07:54PM -0500 On 2023-03-01 19:17, Jasen Betts wrote: >> The DIP style cap that the board uses isn't in stock anywhere so would I >> be able to substitute this cap for 1uf, 20v, +-20%? > DIP: I guessing you mean radial pins. BITD you could get tants with actual 0.2 inch, 4-pin DIP patterns. Cheers Phil Hobbs -- Dr Philip C D Hobbs Principal Consultant ElectroOptical Innovations LLC / Hobbs ElectroOptics Optics, Electro-optics, Photonics, Analog Electronics Briarcliff Manor NY 10510 http://electrooptical.net http://hobbs-eo.com |
| Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net>: Mar 01 07:56PM -0500 On 2023-03-01 19:54, Phil Hobbs wrote: >>> be able to substitute this cap for 1uf, 20v, +-20%? >> DIP: I guessing you mean radial pins. > BITD you could get tants with actual 0.3 -- Dr Philip C D Hobbs Principal Consultant ElectroOptical Innovations LLC / Hobbs ElectroOptics Optics, Electro-optics, Photonics, Analog Electronics Briarcliff Manor NY 10510 http://electrooptical.net http://hobbs-eo.com |
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