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What happend to 320K resistors ?

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TimFox:
Just an important mathematical point:
The "E" series of component values, which are very common for resistors, split each decade into approximately equal (ratio) increments, so that if a value R exists, then so shall 10 x R.  (Analogous to the tempered division of octaves in piano tuning.)  Your requirement uses resistors that are in a binary power sequence, proportional to 2N.  Obviously, at some point the binary sequence will reach a value not in the E sequence.  Therefore, it seems prudent to include the capability of two resistors in series (or parallel) at some places to obtain the values needed.

Jan Audio:

--- Quote from: ebastler on February 20, 2021, 12:48:16 pm ---Digging in your heels here in the forum until someone makes 320k resistors for you is not one of them, I'm afraid.

--- End quote ---

Dont forget for cheaper then 50 cent, not wanto pay more then 5 max.


--- Quote from: srb1954 on February 19, 2021, 07:51:25 pm ---The solderability of components deteriorates over time so the distributor is only going to stock items that can be turned over every 6 months or faster.

--- End quote ---

Thank you, i did not know this was a problem, i thought those resistors stay good forever.

Jan Audio:

--- Quote from: asmi on February 19, 2021, 05:19:53 pm ---I would add one more question - what's wrong with people designing in thru-hole passives in year 2021?

--- End quote ---

I like the 80s better.
80s tech is my favourite.
I want to invest in SMD this year, if only i had as much money as i have thru-hole parts.
I like being a hobbyist, not a professional.
With SMD you are no hobbyist i think.

wraper:

--- Quote from: coppercone2 on February 20, 2021, 03:35:00 am ---link to 300mW 0805 320k thin film?

--- End quote ---
Why would you want 320k thin film (for which op did not even ask) in 0.3W? You would need to apply 309V on such resistor to get 0.3W dissipation. And it would be a lot more than max allowed voltage for resistor in such package.
Here is usual 330k https://www.tme.eu/en/details/hp05-330k1%25/0805-smd-resistors/royal-ohm/hp05w3f3303t5e/

wraper:

--- Quote from: Jan Audio on February 20, 2021, 03:07:29 pm ---With SMD you are no hobbyist i think.

--- End quote ---
So far from truth. Hobbyists use SMD a lot. Especially considering they can order PCBs for a few bucks. Are you professional if you are reflowing PCBs on a pan?

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