ruckus328
Well-known member
I'm working on various projects and had planned to use Bourns 51 Series pots across the board.
http://www.bourns.com/pdfs/50.pdf
They're really nice pots and feel great, and I've demo'd almost every pot I could get my hands on before settling on these ones. They come in both Conductive Plastic and Cermet, but I'll admit I'm not very knowlegable or experienced on the different materials.
I had planned to use the CP versions everywhere, except today when getting ready to place some orders I realized that one of the values I need (1M) are not available in the CP, only in Cermet. I was always under the impression Cermet pots had a very small rotational lifespan, and weren't used for applications where they would be constantly under use, but the bourns datasheet lists the rotational life at 25,000 cycles (which seems plenty acceptable to me and higher than most carbon pots I'm used to). The CP is listed at 50,000 cycles. For this application I would definately prefer a tighter tolerance, and the cermet's are 10% which is really nice, I just want to make sure they don't give out in 6 months and if I should trust the datasheet info. If anyone has any experience with them (or any cermet pots), or just cermet in general it would be much appreciated.
http://www.bourns.com/pdfs/50.pdf
They're really nice pots and feel great, and I've demo'd almost every pot I could get my hands on before settling on these ones. They come in both Conductive Plastic and Cermet, but I'll admit I'm not very knowlegable or experienced on the different materials.
I had planned to use the CP versions everywhere, except today when getting ready to place some orders I realized that one of the values I need (1M) are not available in the CP, only in Cermet. I was always under the impression Cermet pots had a very small rotational lifespan, and weren't used for applications where they would be constantly under use, but the bourns datasheet lists the rotational life at 25,000 cycles (which seems plenty acceptable to me and higher than most carbon pots I'm used to). The CP is listed at 50,000 cycles. For this application I would definately prefer a tighter tolerance, and the cermet's are 10% which is really nice, I just want to make sure they don't give out in 6 months and if I should trust the datasheet info. If anyone has any experience with them (or any cermet pots), or just cermet in general it would be much appreciated.