For Sale - Vishay Rhoederstein MKP1837 polypropolene capacitors

Occam · « **on:** 30 Jul 2007, 06:46 pm »

I'm going to import a couple of hundred Vishay (ROE) MKP1837 polypropylene film caps from overseas. These are the 1% tolerance 160vdc, 5mm lead spacing, film caps that are supposedly the cat's pajamas for bypassing larger caps in crossovers and signal coupling -
http://www.humblehomemadehifi.com/Cap.html
Dunno personally, as I've not tried them yet.

Initially I'd like to just get the 0.01uf (10nf) as those seem to be what folks are looking for. (I'd think the 15nf and 22nf versions should work as well)

If there is enough interest, I can also source them in 15, 22, 47, 68 and 100nf. The last might be good for ps decoupling of opamps at the pins.

Price will be for the initial .01uf (10nf) $2.50ea with a minimum of 4, and shipping will be $3 for a padded envelope and first class mail, to the US only. Large quantities will ship in a $8 priority mail box.
PM me if you're interested in discounted larger quantities (25+) for this value or others.

I've put this in Industry ads as I want to make an obscene profit and buy my wife that diamond tiara.

I you're outside the States, its probably cheaper for you to source them from RS Components directly. They're also available on Ebay (international) in Italy. If you do a search, they've listed some as 'mkp1837' and misspelled some as 'mk1837'.

If I can elicit enough interest (for at least 100), I can take delivery from overseas within a week, and will take mailed cash or PayPal (no fees and preferred).

Vapor Audio · « **Reply #1 on:** 30 Jul 2007, 06:51 pm »

You can get them from Mouser with a min order of something like 70 as well, then you wouldn't have to pay the International shipping rate.

I'd probably be down for a few btw.

Vapor Audio · « **Reply #2 on:** 30 Jul 2007, 07:34 pm »

Oops, Mouser is 700 min buy now ... not 70

Gordy · « **Reply #3 on:** 31 Jul 2007, 07:27 pm »

JoshK · « **Reply #4 on:** 31 Jul 2007, 10:05 pm »

I am down for trying some.

slbender · « **Reply #5 on:** 1 Aug 2007, 12:19 am »

How about Vishay MKP1839's while you're at it... axial .01/.22/.47/1.0/400vdc /1% or 2%/????

-Steven

Quote from: Occam on 30 Jul 2007, 06:46 pm

I'm going to import a couple of hundred Vishay (ROE) MKP1837 polypropylene film caps from overseas. These are the 1% tolerance 160vdc, 5mm lead spacing, film caps that are supposedly the cat's pajamas for bypassing larger caps in crossovers and signal coupling -
http://www.humblehomemadehifi.com/Cap.html
Dunno personally, as I've not tried them yet.

Initially I'd like to just get the 0.01uf (10nf) as those seem to be what folks are looking for. (I'd think the 15nf and 22nf versions should work as well)

If there is enough interest, I can also source them in 15, 22, 47, 68 and 100nf. The last might be good for ps decoupling of opamps at the pins.

Price will be for the initial .01uf (10nf) $2.50ea with a minimum of 4, and shipping will be $3 for a padded envelope and first class mail, to the US only. Large quantities will ship in a $8 priority mail box.
PM me if you're interested in discounted larger quantities (25+) for this value or others.

I've put this in Industry ads as I want to make an obscene profit and buy my wife that diamond tiara.

I you're outside the States, its probably cheaper for you to source them from RS Components directly. They're also available on Ebay (international) in Italy. If you do a search, they've listed some as 'mkp1837' and misspelled some as 'mk1837'.

If I can elicit enough interest (for at least 100), I can take delivery from overseas within a week, and will take mailed cash or PayPal (no fees and preferred).

Occam · « **Reply #6 on:** 1 Aug 2007, 01:31 am »

Steve,

Sorry, no; the Vishay/ROE MKP1839 appear to be made of unobtainium, at least as far as I can deternime.
I've no idea as how these would compare, but Allied does carry the Illinois Capacitor MPW series polypropolene axial caps, in stock in exactly the voltage and values you're seeking (save for the .01uf, which they do have in 630vdc), at apparently reasonable prices. But I've no experience with them, I can't suss out their tolerances from the pdf, but they do have tinned copper leads

http://www.alliedelec.com/Search/SearchResults.asp?N=0&Ntk=Secondary&Ntt=mpw400&sid=46AE7B807C08E17F

FWIW,
Paul

PS - I really like the low cost Jantzen axial polypropolenes and their 400vdc CrossCaps and Standard Z-Caps come in some of those values, match very well, IMO 'sound' very good, and are very reasonably priced.
http://www.partsexpress.com/mfg/jantzen/jantzen.cfm?CFID=1317523&CFTOKEN=62613455

slbender · « **Reply #7 on:** 2 Aug 2007, 01:12 am »

Hi Paul

While Vishay did send me a couple of dozen samples, but itt took months for them to arrive. I too have scoured the net and catalogs, and not found any stocking sources for the MKP1839's.

I plan to be getting some of the Jantzen PP caps and some of the Dayton DMPC and DFFC series caps because they are available from Parts Express, to have a look, a listen and compare.

I know you are somewhat local because you were at Richards' Rave on LI, so when I finish a couple of my new SET Amps, perhaps we can get together for an afternoon and listen ?

Thanks,

-Steven

Quote from: Occam on 1 Aug 2007, 01:31 am

Steve,

Sorry, no; the Vishay/ROE MKP1839 appear to be made of unobtainium, at least as far as I can deternime.
I've no idea as how these would compare, but Allied does carry the Illinois Capacitor MPW series polypropolene axial caps, in stock in exactly the voltage and values you're seeking (save for the .01uf, which they do have in 630vdc), at apparently reasonable prices. But I've no experience with them, I can't suss out their tolerances from the pdf, but they do have tinned copper leads
http://www.alliedelec.com/Search/SearchResults.asp?N=0&Ntk=Secondary&Ntt=mpw400&sid=46AE7B807C08E17F

FWIW,
Paul

PS - I really like the low cost Jantzen axial polypropolenes and their 400vdc CrossCaps and Standard Z-Caps come in some of those values, match very well, IMO 'sound' very good, and are very reasonably priced.
http://www.partsexpress.com/mfg/jantzen/jantzen.cfm?CFID=1317523&CFTOKEN=62613455

jrebman · « **Reply #8 on:** 3 Aug 2007, 04:34 pm »

Count me in.

-- Jim

jrebman · « **Reply #9 on:** 16 Aug 2007, 08:26 pm »

Paul,

Any news on these?

Thanks,

Jim

Occam · « **Reply #10 on:** 16 Aug 2007, 08:45 pm »

Jim & anyone else who wants the MKP1837s,

They arrived yesterday. PM me with how many (of each) that you want and your mailing address. I'll pm you back with the total cost, and my address if you're paying in cash, and if it's ok, I'll ship them out, 1st class mail, on Monday. I just need to buy padded envelopes.
I'll take either paypal or mailed cash in an envelope.

Thanks,
Paul

Occam · « **Reply #11 on:** 22 Aug 2007, 09:30 pm »

Everyone who PMed me about the MKP1837s should have recieved a PM about completing the transaction.

Den - I responded to your PM, but its telling me your Inbox is full....

Den · « **Reply #12 on:** 23 Aug 2007, 03:22 am »

Thanks, Paul. You've got G-mail.

Asic81 · « **Reply #13 on:** 23 Aug 2007, 04:39 am »

Paul
Check your PM
Thanks

hachetman · « **Reply #14 on:** 28 Aug 2008, 02:14 am »

HI, are these available somewhere yet?

I'd need 0.1 uF and 0.01 to bypass some RIFA 450 I bought on ebay for cheap ( hint hint)

Occam · « **Reply #15 on:** 28 Aug 2008, 05:03 am »

Quote from: hachetman on 28 Aug 2008, 02:14 am

HI, are these available somewhere yet?

I'd need 0.1 uF and 0.01 to bypass some RIFA 450 I bought on ebay for cheap ( hint hint)

Sorry - All the remaining are for personal comsumption in the privacy of my home. I have seen some group buys over on diyaudio.com that delivered the MKP1837s at really good prices, lower than I could source them for. You could search and ask over there.

Regards,
Paul

hachetman · « **Reply #16 on:** 28 Aug 2008, 05:08 am »

okay , though something is missing yet, how good it turned out to be?

Occam · « **Reply #17 on:** 28 Aug 2008, 05:39 am »

Well, I've used them as bypasses on Evox MKT.47uf input signal coupling caps on my Aspen Soraya amplifier. I'm pleased as punch with the improvements. Not an overly bespoke combination in the realm of audiophile grooviosity, but its got a really good beat, and its easy to dance to. But the change was in one fell swoop, so my comment of 'they make everything mo betta' is hardly anything other than anecdotal. Whether you and others think that I should have invoked the word improvements as "improvements", largely rests on whether you've listened to my advice previously regarding various improvements I've suggested, and had empirically verified a sample of them for yourself, and/or agreed with my subjective assessment of a component which you yourself had also heard in similar circumstances. Otherwise I can't imagine why my opinion would matter.....

hachetman · « **Reply #18 on:** 28 Aug 2008, 05:47 am »

well i can source audionote teflon 0.01 wonder if the ROE's live up to the hype against that one.

Occam · « **Reply #19 on:** 28 Aug 2008, 06:16 am »

Dunno, the MKT cap that I was bypassing also had the same lead spacing as the MKP1837, 5mm, so it was very easy for me to unsolder the MKT, put the MKP1837 on the vacated holes, and solder the MKT on the underside to the MKP's leads. All nice and neat.

One would certainly hope that an AudioNote teflon would be the bees knees. I'm not familiar with it, or its subjective signature (if one believes in such).

Few things in this world ultimately live up to their hype. Our acceptance of this reality, strangely enough, correlates quite closely with how long one has be married.