01.23.13 - Zero Point documentation

[aballen]

I still dont see SDX documentation.  What size enclosure will it fit?

[garfo]

This is the first tine i hear about multi layer caps.can anyone ine show me how they look like.i dont thunk i can get them from banzai in eutope.

[neiloler]

The Deluxe will fit a BB size box, per the chart on page 3 of the Zero Point Double Delay project notes.

[Haberdasher]

This is the first tine i hear about multi layer caps.can anyone ine show me how they look like.i dont thunk i can get them from banzai in eutope.

they also go by the name "monolithic" caps if I'm not mistaken.  most of them look about like this

[RobA]

You want the C0G NP0 variety. But, I can't find any in 1µF. I've checked Mouser, Avnet, and Digi-Key. Anyone know where to get these?

[madbean]

Here are some 1uF:

http://www.mouser.com/Search/ProductDetail.aspx?R=FK24X7R1E105Kvirtualkey52130000virtualkey810-FK24X7R1E105K

And more:

http://www.mouser.com/Passive-Components/Capacitors/Ceramic-Capacitors/Multilayer-Ceramic-Capacitors-MLCC-Leaded/_/N-4gzxj?P=1z0wrj5Z1z0x565Z1z0x1hvZ1z0z7l5

[RobA]

Those are the X7R dielectrics. But, I now see that they only make the C0G's up to 0.1µF. Hmm, I think I will try the MKS02 in the 1µF position too. Although Mouser's price on the 1.0µF WIMA's is nuts.

[Peteyboy]

You want the C0G NP0 variety. But, I can't find any in 1µF. I've checked Mouser, Avnet, and Digi-Key. Anyone know where to get these?

I don't think they make C0G/NP0 MLCC caps that are greater than about .1uF.

Here's a good chart quickly covering tradeoffs between different types of caps:
http://www.holystonecaps.com/PDF/TechNotes/200712181125470.Capdielectriccomp3.pdf

[Haberdasher]

also here, I think: http://www.taydaelectronics.com/capacitors/monolithic-ceramic-capacitor/1uf-50v-multilayer-ceramic-capacitor.html

edit: I actually have some of those caps from tayda in front of me now.  The lead spacing is 5mm but they are bowed out just like in the pic.  All you'd have to do is straighten them and they'd work fine for 2.5mm.  Assuming they are still selling the same caps, of course.

[njkke]

MLCCs in Europe? I've found nothing on Musikding and Banzai 

[midwayfair]

also here, I think: http://www.taydaelectronics.com/capacitors/monolithic-ceramic-capacitor/1uf-50v-multilayer-ceramic-capacitor.html

edit: I actually have some of those caps from tayda in front of me now.  The lead spacing is 5mm but they are bowed out just like in the pic.  All you'd have to do is straighten them and they'd work fine for 2.5mm.  Assuming they are still selling the same caps, of course.

I get these from Tayda all the time.

They carry two different types, one with 2.5mm bowed legs and one with 5mm. It's impossible to know which kind you will get on any given day. Straightening the leads without breaking the cap is surprisingly hard. The material is very brittle.

Also, their 100nF monolithics are always 5mm lead spacing, so you'd need to get them through somewhere like mouser regardless.

Mouser's not horrible and the ZP Mini requires 1/8Wq resistors. I've got the parts for three builds of it plus more in my cart right now and it's under $13, plus whatever first class shipping is ($4 at most?).

[RobA]

You want the C0G NP0 variety. But, I can't find any in 1µF. I've checked Mouser, Avnet, and Digi-Key. Anyone know where to get these?

I don't think they make C0G/NP0 MLCC caps that are greater than about .1uF.

Here's a good chart quickly covering tradeoffs between different types of caps:
http://www.holystonecaps.com/PDF/TechNotes/200712181125470.Capdielectriccomp3.pdf

You are right about the limitation to 0.1µF for the C0G caps. I hadn't noticed this before. Oh well. There are some good articles out there about the distortion levels from various dielectric materials for the MLCC's. Places like Wolfson, Analog devices, etc. generally advise against using anything but C0G in the signal path. But, that's not going to work for the 1µF caps.

I'd seriously look into using the WIMA MKS02's in these 1090A builds. In Europe, Banzai has them for reasonable prices. Mouser has most values for OK prices, put the $2 apiece for the 1µF is a bit much.

Here's an article that give measurements,
http://www.edn.com/contents/images/6430345.pdf

[madbean]

I use the XR7 1uFs often and have never had a bad result with them. Actually, I did a Klon build using similar MLCC caps and it was one of the best sounding I've built....for purely anecdotal evidence of course.

Also, remember the 2.5mm requirement in only for four of the caps on the Micro build, and none of them are 1uF. It's explained in the doc.

[madbean]

Also, you can easily substitute a mini Lelon 1uF electrolytic or a 16v Tantalum for the 1uFs in the signal path if you like. These are about the same size and will fit no problem.

[madbean]

All documentation has been uploaded. Let me know if anything is amiss.