Where to Buy this Potentiometer - Page 1
Forum section: electronics / beginners

author: Mechatrommer
author_rank: Super Contributor
timestamp: September 11, 2011, 02:41:45 am
content: it has 502B written on the side of it. i bought 6 units from local shop he said its an old (left over) stock he cant supply new order anymore. tried finding in the net with no luck, and my net is very slow finding in digikey with thousands kind of pot will take me forever. so i ask help on other resources or if you have seen this bugger somewhere for sale. thanks.

author: IanB
author_rank: Super Contributor
timestamp: September 11, 2011, 03:11:03 am
content: Is that corrosion on the top of it?It just looks like a miniature pot. Given that any potentiometer is the same as any other potentiometer, what exactly is it about this one that you want to repeat? Physical size, electrical characteristics, mounting arrangement, ... ?

author: Mechatrommer
author_rank: Super Contributor
timestamp: September 11, 2011, 04:03:57 am
content: yes it is corrosion since from the shop, now its worst, its an old stock. its been a year with me. i can consider different model with the following rule/criteria...important criteria... footprint and dimension size (ie small), 1 turn only no need multiturn, you see the knob? thats small diameter and nice, i dont have to buy additional knob for it, just use as is directly. most important point is that its compact but yet comfortably controlled. i dont need high electrical spec since its only for mcu adc input (reading voltage level... hi impedance stuff), but the greater the resistance the better (> 1K ohm), to avoid unneccesarry current consumption to ground from the 3V supply. any mounting type will do, with condition it will not take too much space in the pcb/product. thanks.

author: gamozo
author_rank: Regular Contributor
timestamp: September 11, 2011, 04:58:27 am
content: What is the range on that? That could help in searching.I came across this:http://www.electronicsurplus.com/Item/151439/Mechatronics%20Industrial%20-%20Potentiometer_%2010K%20Ohm_%20-%20RV121NH%20B10K/which looks very similar for control/pinning, but the dimensions do not match what you have posted.

author: SgtRock
author_rank: Unknown
timestamp: September 11, 2011, 05:16:51 am
content: Dear Mechatrommer:--Please visit the below link.http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=CT2264-ND--This pot would appear to be the updated version of your old one. It is slightly larger in one dimension. You will have to check the data sheet to make sure, but I believe this might be what you need. Best RegardsClear Ether

author: amspire
author_rank: Super Contributor
timestamp: September 11, 2011, 09:01:46 am
content: Quote from: Mechatrommer on September 11, 2011, 02:41:45 amIt is similar the the Bourns PTV09 series.The 502B just means 5K linear taper as apposed to a logarithmic taper for volume control use.http://www.bourns.com/data/global/pdfs/PTV09.pdfRichard

author: Mechatrommer
author_rank: Super Contributor
timestamp: September 14, 2011, 12:53:53 pm
content: thanx guys. i was on emergency leave 3 days ago. gamozo, thats a bit bigger pot (12.8mm x 17mm footprint incl leads), but thanx for the option. at SgtRock, thanx. i think thats it! spot on dimension. the difference in casing i dont think will affect too much in space requirement. i'll study later since my current net is so damned slow (@amspire link too) i hope (and will look) for more option. but currently, CT2264-ND SgtRock suggested is the best option.