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Part Sourcing Assistance/Advice Thread

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you want a (room temperature vulcanizing) RTV that is suitable for PCBs. GE/Momentive make good ones. Google is your friend. Fry's sells it, of all places here in Texas.

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  • Never underestimate the obfuscating twats on diyaudio I asked a question regarding Kemet vs. Vishay-Polytech tantalum-polymer capacitors (since the Vishays are considerably cheaper and appear to

  • pray to the deity of semiconductor manufacturing (in a reverential voice tinged with grief)....  🙏 oh Nosemi please hear our plea for our DIY hobby.... in the name of silicon pleas

  • Craig Sawyers
    Craig Sawyers

    It isn't confined to On-Semi. Rohm did the same thing with all their low noise offerings ages ago, So did Renesas with the J79/K216 - in fact lateral MOSFETs are a thing of the past. Most p-channel jF

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I had used the plain old GE Silicone II in clear before. Many of the caps in the Counterpoint pre I used to have were affixed using clear silicone (from the factory). As long as it is low odor it should be non-acidic. From a quick google of electronics-grade silicone, it looks like GC has one for a reasonable price (<$5 a tube).

Just out of curiosity, if I want to form a thin circular gasket using RTV, what would be the best way to achieve this?

Any suggestions for a reliable vendor for SSM2210 duals (PDIP preferred, but SOIC will work)? beer.gif

Found

Anyone keep track of the PcX discount specials? I'm wanting to get some Caps and am waiting around for the next special. If anyone happens to notice the announcement or has a feeling when it would be, perhaps you could post here?

Anyone keep track of the PcX discount specials? I'm wanting to get some Caps and am waiting around for the next special. If anyone happens to notice the announcement or has a feeling when it would be, perhaps you could post here?

x2 also have some caps I need and waiting for the next 20% off sale. How much do they charge for shipping to the US for small < 1 lb orders via the cheapest air mail?

Due to unavailability of Dynalo PCBs I'll be building one on a perfboard. I have a question regarding the 2sj74- as you most likely know there are two versions- BL and GR. Which one should I use? I'm using this schematic- http://www.elfaforum...46&d=1336591768

Also as this is my first major DIY project- if I stuck to the parts shown on the schematic- with what gain I'll end up? I'm looking to drive my HD650, so 8-11X would be plenty.

Edited by RudeWolf

BL if you can get them (same for 2SK170).

Is Amb out of Dynalo boards? I may have one laying about that I probably won't need (the original DGardner boards, not the ones Lil Knight had run). Stock Dynalo gain should be fine; I've never adjusted the gain on any of mine and they have been just right for all the phones I've thrown at them. Note, I didn't look at your schematic from work.

Thanks for the info! Too bad that some sites doesn't specify which version they are selling.

In any case I'd be happy to buy a couple of Dynalo boards for a tidier setup. Maybe I'll power the whole thing from a Sigma22.

I probably only have one (which is 2 channels)... I'll take a look tonight and see what I have left.

Sure, Pars- take a look. I'm building a two channel and was under the impression that 1 channel=1 board, if it's a stereo board then I'd take one.

Dang, that must be the smallest Dynahi I've ever seen on diyaudio! I'll contact that guy If I get any more questions regarding the build.

Sorry, forgot to check last night. Just sent myself an email to remind me...

RudeWolf

I do have (2) of the Rev. C Dynalo boards left. I could part with one. PM me with your address and what you consider fair and we'll go from there.

BTW, the link Marc posted was a Dynalo, not a Dynahi.

Didn't know where else to post this, but RIP PCM1704

Sad, but have you seen the price on the 1704 lately? And you need 4 for a differential design? It looks like they will be available for the foreseeable future.

Ok, I have figured out what I need. Anyone have a recommendation for a flush mount pin socket? Also, called a miniature spring socket? Anyone used these before?

What's different about the PCM1704's status? It's been NRND for a very long time. Compare that to the PCM63, which is explicitly marked as obsolete -- http://www.ti.com/product/pcm63

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