F&T variants

[joesatch]

Bought several F&T 22uf 500v caps from a few vendors. There are differences in size on these.  Why?  Which is better?

[shooter]

 
open them up, probably lots of air inside.
whatever can was on sale the day they decided to make 22uF cap determined the can size

[sluckey]

The big ones are for big amps. The little ones are for little amps.

[dude]

Ease of manufacturing, use what fits, all kidding aside but l like “use the big ones for big amps, small one for same amps” 

[chaswahl]

FWIW, their full range catalog does list two different sizes for 22 uF 500 V Typ A caps: 16 x 39 mm and 18 x 30 mm, the only apparent difference being the "order code": https://www.ftcap.de/fileadmin/user_upload/download_inhalte/FTCap_ELCO_mit_Mersenlogo_Ansicht.pdf

They have a "general section" at the beginning that is interesting for its informational content.

[bmccowan]

this chart explains it well

[owen]

Wasn’t F&T bought by Mersen a few years back, or is that bad info?

[DummyLoad]

Wasn’t F&T bought by Mersen a few years back, or is that bad info?

Yes, they were.

https://www.ftcap.de/en/

--Pete

[HotBluePlates]

... There are differences in size on these.  Why?  ...

It doesn't matter.  The size is very-similar.

... Which is better?

They're the same.  Use them in good health!

[thetragichero]

Bought several F&T 22uf 500v caps from a few vendors. There are differences in size on these.  Why?  Which is better?

this is the same thing as when you go to mouser and search for a 100nf 50v film cap (for example). you'll get results rangi-shapeng in size from smaller than a grain of rice to quite large. differently-shaped pegs for differently-shaped holes

[EL34]

My FT supplier orders directly from FT in Germany


I had him get me 500 of the 16/475v caps from FT in Germany


The top longer 22/500v cap in your photo is what I stock and comes directly from Germany
Not sure what that shorter fat one is?

All my FT caps are on this page
https://hoffmanamps.com/MyStore/catalog/Capacitors.htm

[joesatch]

i went with the big ones.

[Williamblake]

I wish they had a variant with sturdy lettering.

[owen]

I wish they had a variant with sturdy lettering.

I was embarrassed by how badly the print disappeared off them in an amp I built a friend that I replaced the caps wearing gloves… I want any actual techs working on it to quickly read all values.

[uki]

Is that the cool chassis you were talking about the other day? Looks good so far!