Date:         Mon, 28 Sep 2009 16:07:42 -0700
Reply-To:     Rocket J Squirrel <camping.elliott@GMAIL.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Rocket J Squirrel <camping.elliott@GMAIL.COM>
Subject:      Re: Tantalum capacitors to stop blinking temp LED
Comments: To: David Beierl <dbeierl@attglobal.net>
In-Reply-To:  <4ac14062.48c3f10a.4f87.2546@mx.google.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed

You're right! Much better.

--
Mike "Rocket J Squirrel" Elliott
84 Westfalia: Mellow Yellow ("The Electrical Banana")
74 Westrailia: (Ladybug Trailer company, San Juan Capistrano, Calif.)
Bend, OR
KG6RCR



On 9/28/2009 4:01 PM David Beierl wrote:

> At 06:33 PM 9/28/2009, Rocket J Squirrel wrote:
>> 16 volts should work fine in an automobile. Tantalum not needed, general
>> purpose aluminum electrolytic is quite acceptable.
>
> However the ones you point to are only rated -40C to 85C...I think you'd
> want at least 105C, maybe 125C if it's mounted inside the engine
> compartment, and the low temp rating is marginal too.  Aluminum caps
> survive poorly when run hotter than their rating (50% lifetime reduction
> per 10F is what I recently read), and I don't imagine they like being
> frozen, either.  Since the tantalums don't contain wet electrolyte they
> don't mind either heat or cold as much as aluminums.  Here's one that I
> think would be preferable:
> <http://mouser.com/ProductDetail/Kemet/T355G226M020AT/?qs=sGAEpiMZZMvYDzv5pG7654NsQWJgSSEO7cXO0Gu2g28%3d>
>
>
> d
>