What Trimpots Are You Using?

[turdadactyl]

The Tayda trimpots (Tokyo Denshi) are very inexpensive, but are 25% tolerance.  The Mammoth ones (Bourns) are 10% tolerance but cost literally 25x more (and more still at Mouser).  Anyone using something else? 

Related...has anyone checked whether the trimpots from Mammoth fit in the same footprint as the ones from Tayda?

[italianguy63]

The Tayda trimpots (Tokyo Denshi) are very inexpensive, but are 25% tolerance.  The Mammoth ones (Bourns) are 10% tolerance but cost literally 25x more (and more still at Mouser).  Anyone using something else? 

Related...has anyone checked whether the trimpots from Mammoth fit in the same footprint as the ones from Tayda?

You can get the Bourns from Tayda too..  I don't think they are listed on the trimpot page.  I think you have to search using "cermet"

I use those.

MC

[turdadactyl]

You're my hero! 

https://www.taydaelectronics.com/10k-ohm-trimmer-potentiometer-cermet-1-turn-3362p.html

[italianguy63]

You're my hero! 

https://www.taydaelectronics.com/10k-ohm-trimmer-potentiometer-cermet-1-turn-3362p.html

Glad to help brother!
MC

[bluebunny]

Does the tolerance of a trimmer really matter?  So the full resistance of a 100K trimmer might actually be 75K or 125K, but once you've trimmed it to the value you need, the tolerance no longer plays a part.

[Kevin Mitchell]

As of recently there's one that I find functionally appealing and one that is visually appealing. Both are sealed packages.

25 multi-turn trimpots are very useful for sensitive circuits - type 3296W
And for low profile circuits I like 3386P/72PR type.

They're not the smallest trimpots but they certainly seem robust.

[diffeq]

Does the tolerance of a trimmer really matter?  So the full resistance of a 100K trimmer might actually be 75K or 125K, but once you've trimmed it to the value you need, the tolerance no longer plays a part.

Some JFETs have a parameter spread Vgs(off) of 1:5, so I suspect that, theoretically, there's a tiny chance of 75K being too short in some applications.

[bluebunny]

Indeed.  That's what 250K trimmers are for.