Has anyone found a supplier for resistors rated below 1 ohm? Ebay has almost nothing in this range and the one supplier I have seen recomended on BLF (DigiKey) is out of almost every sub 1ohm resistor I need. I am looking for resistors ranging from about .05 to .5 ohms in the 0805 or 1206 package. I would also pay a known member thru paypal a worthwhile price for a decent selection homemade kit.
Fastech - Nothing below 1ohm
Ebay - If you order a reel maybe
DigiKey - Mostly out of stock
The tolerance on these things really doesn't matter much, you just need whatever it takes to get the total resistance required to get the desired output, so you can open up more choices by removing the 1% filter. What the actual values are to get there, honestly, who cares?
Here's another interesting option, when you have room for it: click
That is perfect I think. Maybe my problem is I don’t know how to search that site. I could only see .68 and .82’s based on another search I copied from BLF.
I still don’t see them, maybe it’s the way they label them that is screwing with me. They don’t list the ohm’s on the product pages and the description’s they give are not standard, “0805 0.22R SMD Precision Resistors”. How does anyone interpret .22R? An “R” is usually a place holder for a period right.
Thank you allan d! Your offer is really appreciated but I am going to try and figure this out if I can. It seems to be my technical skills are preventing my success and not a lack of supplies in the market.
The marking on a .22 ohm resistor will be R220 (or R22, on small ones like 0603/0805 where there isn't room to make it big enough to be readable), not .22R. .22R is only used when talking about them, not in the numbers actually on the chip itself.
Thanks everyone1 I made an order of a 100 pieces for almost every precision resistor FT has.
The nichrome wire trick seemed really promising at first but it was to difficult without solder creeping up the wire and ruining the value. I am sure it would work a lot better for values greater than an ohm or just a longer piece of nichrome wire but when it’s cut as long as the 0805 resistors it’s not an easy task to solder it.
It’s not going to be easy finding 0.5ohm or 0.05ohm resistors in 1206 package as these resistors are mostly used in current sense circuits and require a better heat sink. You can however find these in 0805 package. There are new ones currently very popular these days, 0.05ohm resistors. It is basically a very small metal strip folded and it stays above the PCB which provides a great heat sink as well. Try searching for 0805 metal resistors on farnell.