[time-nuts] Electrolytic Capacitor Question

[Tom Miller]

----- Original Message ----- 
From: "Perry Sandeen via time-nuts" <time-nuts at febo.com>
To: "time-nuts" <time-nuts at febo.com>
Sent: Saturday, November 08, 2014 6:32 PM
Subject: [time-nuts] Electrolytic Capacitor Question


> List,
>
> OK everybody, let’s not get our pacemakers wound up<G>
>
> The problem. (Long Intro)
>
> I have about 15 pieces or so of older HP test equipment.
> 3586B, 5370B, 5335A to name a few.  Because of their age of 20+ years a 
> few have failed and need repair. I
> have decided to go on a wholesale electrolytic capacitor replacement on 
> all of
> them. (Mouser will be able to declare an extra dividend)
>
> For all the *standard* types I’ve chosen mostly Panasonic
> 105C 10,000 hour caps. So far, so good.
>
> Now I come to the issue of the wet-slug tantalums that were
> used.  At the time of manufacture, these
> were the best and most expensive low voltage electrolytics available.
>
> The question is: can one replace the tantalums with the high
> grade (105C) Panasonic or Nichicon capacitors with an equal or higher
> capacitance value?
>
> Even using the *tear drop* new replacements one is looking
> at very heavy $$$.
>
> Regards,
>
> Perrier
> _______________________________________________

Take a look at the Aluminum Organic Polymer Electrolytics.
Available in 105 °C and 125 °C.  They have very low ESRs. In the milliohms.

http://www.mouser.com/ProductDetail/Nichicon/PLV1J470MDL1TD/?qs=sGAEpiMZZMsIwzbKW1rlgcLka6aSC%252bMPM5mgSdKYBU4%3d