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Join Date: Apr 2016
Location: Chattanooga, TN
Posts: 13
Heater Relay Capacitor Question

Hi everyone. Hopefully someone can help me with this question. This is in a 1986 Porsche Carrera 3.2L coupe, although I don't think that matters. So my heater really gave out, and I decided that I want to try and repair it. I have another installed in the car, but just trying to have a spare.
When I opened the case, it appears that my 2 capacitors look very different. Both of them (denoted with arrows) have leaked and there's gunk stuck to the circuitboard. What I would like to find out is what you all know the capacitors should be. I have seen several pictures on this site that have 2 orange capacitors, and I don't recall seeing any with a black and an orange.

I'm trying to make sure I'm getting the right ones. Here's what they say:
Orange Capacitor is 47µF at 16v
Black Capacitor is 1µF at 63v

The Black capacitor seems off, and I'm struggling to find a replacement easily (ordered one, but that's coming from China). Hopefully someone can help with what theirs may read.

Thanks!

Old 02-12-2020, 06:02 AM
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ROW '78 911 Targa
 
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Voltage rating is higher, but should be fine.
https://www.mouser.com/ProductDetail/KEMET/ESH105M100AC3AA?qs=sGAEpiMZZMtZ1n0r9vR22e66vF2fXFU FQNKzUKfFpkaAQPJWx7UpNg%3D%3D
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Old 02-12-2020, 02:51 PM
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I appreciate that.
Old 02-12-2020, 05:15 PM
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Kroon Wire Harnesses
 
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heater relay

I think the capacitors are glued to the PCB instead of leaking ? (in the back this relay gets a lot of vibration from the engine)
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Old 02-13-2020, 06:16 PM
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Quote:
Originally Posted by timmy2 View Post
I would go for a voltage rating of 25V or even higher as the electric system sees a lot of transient spikes. All these old 16V caps are a bit too narrow of a margin if you ask me. Same issue with them in the cruise control unit
Old 02-13-2020, 11:58 PM
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That’s good to know about the voltage.

Old 02-14-2020, 06:19 AM
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