Apologies - my mistake - I wasn't paying sufficient attention when
Google decided that this was a perfect match when searching for 300SP-1-502:
http://uk.farnell.com/webapp/wcs/stores/servlet/Search?st=3400s&catalogId=15001&categoryId=700000005471&langId=44&storeId=10151
But £180.27 each whereas Newark, the US arm of Farnell only want $120 or
approx £80 for the same part! Are there really that many Brits who put
up with being ripped-off to these levels?
Tony H
On 26/09/2015 01:27, Charles Steinmetz wrote:
Charles wrote:
I had to look it up. The company was Arrow (800 833 3557). The pots
were manufactured by Bournes with a manufacturer part number of
300SP-1-502. Unit cost $7.73 in 2011. I bought 26 so my cost was
about $200. I wanted a "Manufactured in America" part but can't
remember if that was too pricey or not.
Tony wrote:
They are now $92.55 from Arrow now and Farnell want over $200 each if
you buy 25 or more!!!! There don't seem to be any obvious cheap
alternatives for 10 turn 20ppm/C 5W pots.
The original pots were Bunker Ramo-Eltra (later, Bunker Ramo-Amphenol)
P/N 3800P-502. These were 20-turn, 5k, 10%, 1W, +/-50 ppm/C wirewound
parts in the 34b rectangular package. The Bourns 3005P-1-502 matches
these specifications (I suspect "300SP" in Charles's message was a
typo). I do not know if the pin layout is the same as the 3800P-502.
Verical has the lowest price on the 3005P-1-502 that I could find in a
quick search, $7.68 each. Others charge from $9 to $14.
Tony -- what part number were you quoting specs and prices for? I
found nothing searching for "300SP-1-502."
Best regards,
Charles
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