Author Topic: VISHAY PRECISION RESISTORS EBAY  (Read 1211 times)

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Offline VNUTDENYERTopic starter

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VISHAY PRECISION RESISTORS EBAY
« on: May 11, 2020, 01:37:25 pm »
Quick question.  Are those 1k 2ppm .01% Vishay resistors from Poland worth $12 ea. to build good Hamon divider for 100-12000 ohm use checking 6-1/2 digit dmm?  Heading to ER now from CCP virus confinement so sorry about lack background info.
HP 3478A, HP 75000-C w/ HP1406A + HP E1410A x2, EDC 501J x6, Guildline 9152/4 Std Cell x2, KEITHLEY 150A Microvolt meter, L&N 4735 W.B., D. Malone 3.0000v ref, DP311 DEKAPOT, CA1569 DEKAPOT, 5KV electrophoresis PS, C.S. 3711A E load, Enviro chamber (truck camper)!?
 

Offline RandallMcRee

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Re: VISHAY PRECISION RESISTORS EBAY
« Reply #1 on: May 11, 2020, 03:40:07 pm »

I would say not.

I have found at least two sources (but not at arbitrary values) of precision resistors that provide similar specs for $3 per resistor. Look around.

So, only worthwhile if you *must* have a certain value. For a hamon divider that is not the case.

Thanks,
Randall
 

Offline ArthurDent

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Re: VISHAY PRECISION RESISTORS EBAY
« Reply #2 on: May 11, 2020, 04:18:46 pm »
I have purchased several orders of those precision SFERNICE/Vishay resistors on eBay from sm-poland7 in Poland and I found them to be first quality. His feedback is 100%. If you buy from him go with the economy shipping at $6USD and not the faster $39 shipping! He is a reliable supplier of precision resistors and I am just a very satisfied customer.

Those resistors were used in my LTZ1000ACH standard that has been on 24/7 for over a year. My standard agrees with the USA Cal Clubs standard and my HP3457A 6.5 digit DMM.See photo below of my standard with the inner metal cover off and without the foam shield around the LTZ1000ACH.
 
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Offline VNUTDENYERTopic starter

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Re: VISHAY PRECISION RESISTORS EBAY
« Reply #3 on: May 11, 2020, 09:01:29 pm »
Thanks for seller vote, will look some more but wanted R300 for full scale HP3478 ranges to start (set of 10/12 makes  30, 50, 100,150, 300,450, 3k and lots more).  Hoping to start with at least 0.1% and then test/match for tighter.  Did not see US shipping for $6 which would be fine.  Still looking  for better way to series/ parallel them selectively than banana plugs.   
HP 3478A, HP 75000-C w/ HP1406A + HP E1410A x2, EDC 501J x6, Guildline 9152/4 Std Cell x2, KEITHLEY 150A Microvolt meter, L&N 4735 W.B., D. Malone 3.0000v ref, DP311 DEKAPOT, CA1569 DEKAPOT, 5KV electrophoresis PS, C.S. 3711A E load, Enviro chamber (truck camper)!?
 


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