where To Buy Precision Resistors Fast

MEXICOWANDERER wrote:
Just found and ordered them. 20-30 ohm step spead. (5) each 20 ranges. Mil-spec. No color banding woowoo.

Okay, I have not done any electronics in over 10 years, but IIRC, no color band for tolerance meant 20%

Chuck_thehammer wrote:

Use to order this stuff for work..

I sat next to the circuit designers for some embedded system controllers. Everything they spec's was 1%. I asked if the accuracy was really that important. The answer was, "In the quantities we buy there us effectively no difference in price between 1%, 5% and 10%."

2-4 months lead time was not an issue.

westend wrote:
At Digikey, list of .5% resistors offered.

They list almost 20,000 part numbers. Less than a dozen are "in stock". Many of the remainder are 16 weeks+ availability.

Mouser shows over 2500 non surface mount resistors in stock with 0.1% tolerance.

Yes, a lot of values are available by special order, but there is some selection that is ready to ship.

Is such a high tolerance really needed for the application? 0.5% or even 1% are so much cheaper and more widely available.

This is for a trial click-click-click 12 position rotary switch. Allows for a user to know in advance where a pre-set setting will limit. With an on-on selector switch controlling a selection either the 10-turn pot or rotary switch the ergonomics become simpler.

I am going to direct post the articles most likely from a hard bench in Starbucks Chula Vista. Thursday or Friday. Wish me luck. Photobucket + Gmail. It's going to get messy. Ptui

Mex, do we need to order one of these for your Megawatt project?
If so send us the link.
Thanks

Just found and ordered them. 20-30 ohm step spead. (5) each 20 ranges. Mil-spec. No color banding woowoo. They are NOS Ohmite.

At Digikey, list of .5% resistors offered.
I've had good luck with Vishay-Dale 1% 1/4 watt resistors. I use them for a lot of projects.

theoldwizard1 wrote:
Any resistor <1% is usually special order and volume is required.

100 percent correct. less then 1 percent or military spec.. special order... from anyone.. could be a month or more. 1 or 2 values might have limited quantity on hand..

Use to order this stuff for work..
Point 1 percent for A/D to D/A .. and D/A to A/D converters systems.

Any resistor <1% is usually special order and volume is required.