Tantalum capacitor

[kd2goe]

Replacing capacitor Uniden Washington

I found a relay nice Uniden Washington on E-bay be here next week..
I am going to go through it and do a recap and schottky diode and may be a roger beep on the Ch 9 button not 100% on that yet. I dont want to add any holes in to it or odd switches.

For the recap can I replace the low value electrolytic capacitors with an tantalum dry capacitors?

and i cant fined a list i was hopping to order them now dus any one out there have a list of caps and values?

 

[JayMojave]

Hello Mkube396: You don't want to use a tantalum cap. These are used for low ripple type functions as in low power signal applications. You will need a cap made for a power supply filtering. SEE:
Antique Electronic Supply

I have replaced a few electrolytic capacitors in older radios using these type of caps.

Good Luck

Jay in the Mojave

 

[kd2goe]

was all so hopping some on had a list of what caps i need to order so i can get a jump on it..
is the parts list the same as the corba 142 GTL?

i found this

http://www.cbtricks.com/radios/cobra/142gtl/graphics/cobra_142gtl_om_parts_list.pdf

 

[jackj]

mkube396, you can use tantalum capacitors as filter caps in a power supply as well as using them to decouple the supply rails but I wouldn't advise using them as filters. They are less likely to fail than aluminum electrolytic caps but while aluminum electrolytic caps usually fail by going open tantalum caps fail by shorting. They can also go into thermal runaway and start a fire if they short and the power supply can furnish enough current. They cost much more than standard aluminum electrolytic caps. I would recommend that you stay with aluminum electrolytic caps in the power supply or anywhere else that has the possibility of supplying high current into a shorted cap.

 

[kd2goe]

mkube396, you can use tantalum capacitors as filter caps in a power supply as well as using them to decouple the supply rails but I wouldn't advise using them as filters. They are less likely to fail than aluminum electrolytic caps but while aluminum electrolytic caps usually fail by going open tantalum caps fail by shorting. They can also go into thermal runaway and start a fire if they short and the power supply can furnish enough current. They cost much more than standard aluminum electrolytic caps. I would recommend that you stay with aluminum electrolytic caps in the power supply or anywhere else that has the possibility of supplying high current into a shorted cap.

i am not going to go with the tantalum caps ill stick with the electrolytic caps

i am just going to order panasonic or United Chemicon caps