SOLVED Odd parts sourcing 100n 50v bipolar electrolytic?

[Fontelroy]

I'm currently back to working on a Deadend FX build that's been on my desk for quite a while, it has lots of parts I've had trouble sourcing and one that has me scratching my head is this 100n 50v bipolar capacitor. Has anyone hear completed this build and if so where do you get this part!? Searching mouser all I can find is smd capacitors - https://www.mouser.com/c/?q=.1 uf bipolar electrolytic capacitor


Any help here would be greatly appreciated!

 

[Fontelroy]

is it possible to just substitute a film cap instead?

 

[Alan W]

I don't see why you couldn't use a film 100n instead, but possibly someone will have a reason.

 

[giovanni]

Are we sure it’s not a misprint and it’s actually 100u? Can’t see that part on the PCB pic above.

 

[Fontelroy]

a misprint was my first thought, it's this guy -

 

[giovanni]

a misprint was my first thought, it's this guy - View attachment 51790

That sure looks like 100u… is there a support forum or email you can contact?

 

[Fontelroy]

I didn't think that it was 100u because c1 and c2 are both 100u and their footprint on the pcb showed a larger radius, but I suppose it could be a typo that carried over from the pcb?
edit: I tried emailing deadendfx's contact email to no avail a few months ago back when I original got this pcb

 

[giovanni]

Tayda has 0.1uF electrolytic capacitors in stock. I don’t think they come up if you search for 100nf tho!

 

[Fontelroy]

Tayda has 0.1uF electrolytic capacitors in stock. I don’t think they come up if you search for 100nf tho!

I couldn't find any that were bipolar... all I've been able to find are regular 0.1uf

 

[Betty Wont]

If you look at their example build in the build doc. They used a film cap. That’s what I used in my build and it worked fine.

 

[Fontelroy]

If you look at their example build they used a film cap. That’s what I used in my build and it worked fine.

awesome! so the same value of 100n works?

 

[Betty Wont]

Yup, a standard 100nf film cap.

 

[giovanni]

I couldn't find any that were bipolar... all I've been able to find are regular 0.1uf

These are certainly bipolar.

 

[Fontelroy]

These are certainly bipolar.

I didn't see it say bipolar anywhere on the page... I'm not super knowledgeable when it comes to parts nomenclature, but their picture still shows a negative side on the cap print. I know bipolar caps still have 2 different length legs, but I haven't come across any that still have a negative side printed on the cap

 

[giovanni]

I didn't see it say bipolar anywhere on the page... I'm not super knowledgeable when it comes to parts nomenclature

Electrolytic capacitors are always bipolar by construction. I think it has to do with the asymmetric geometry of how they are made but I’m not an expert.

 

[Fontelroy]

Electrolytic capacitors are always bipolar by construction. I think it has to do with the asymmetric geometry of how they are made but I’m not an expert.

I'm super confused here... the build called for bipolar caps, are you thinkin polarized and bipolar mean the same thing? Bipolar means non polarized and means you need a more specific type of electrolytic capacitor

 

[giovanni]

I'm super confused here... the build called for bipolar caps, are you thinkin polarized and bipolar mean the same thing? Bipolar means non polarized and means you need a more specific type of electrolytic capacitor

Oh I’m confused I guess! I thought those meant the same thing but I guess you’re correct. I had no idea you could have bipolar electrolytic caps!
TIL

 

[Betty Wont]

Oh I’m confused I guess! I thought those meant the same thing but I guess you’re correct. I had no idea you could have bipolar electrolytic caps!
TIL

Bipolar Electrolytic Capacitors - Capacitors

www.taydaelectronics.com

Tayda has a separate section for the bipolar ones.

 

[Laundryroom David]

Very not the same. Learning is good!

 

[giovanni]

Yeah I totally beefed it ahah