[volt-nuts] Fluke 720a self calibration repair

Tony vnuts at toneh.demon.co.uk
Sun Sep 27 14:15:31 EDT 2015


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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