ID a surface mount resistor
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ID a surface mount resistor
I have a surface mount resistor that is labeled 851. Is it 850 ohms or 85 ohms? It is almost 1/4 inch long and almost 1/8 inch wide. How many watts is it?
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Re: ID a surface mount resistor
851 "should be" 850 ohms. 850 ohms is non-standard, but could be a precision resistor.
6mm x 3 mm size. looking on DigiKey, I see a lot of 1-watt resistors in this physical size, but there are also 1/4 watt resistors as well.
6mm x 3 mm size. looking on DigiKey, I see a lot of 1-watt resistors in this physical size, but there are also 1/4 watt resistors as well.
Re: ID a surface mount resistor
arlojanis wrote:I have a surface mount resistor that is labeled 851. Is it 850 ohms or 85 ohms? It is almost 1/4 inch long and almost 1/8 inch wide. How many watts is it?
If your really in doubt, take an Ohm meter and measure it. I believe it to be an 850 Ohm value.
As to it's wattage, it's not a good idea to try and put much power through a surface mount resistor. They are not generally designed for that. Plus you don't have any cooling for them.
Jim
Re: ID a surface mount resistor
Usually, the marking are
NNM
where NN is numerical value, and M is the multiplier of that value, giving a value of NN*10^M
In this case, 85*10^1 = 850.
Were it 852 then the value would be 85*10^2 = 8500 ohms.
NNM
where NN is numerical value, and M is the multiplier of that value, giving a value of NN*10^M
In this case, 85*10^1 = 850.
Were it 852 then the value would be 85*10^2 = 8500 ohms.
This is my opinion, not Aeroflex's.
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I WILL NOT give you proprietary information. I make too much money to jeopardize my job.
I AM NOT the Service department: You want official info, manuals, service info, parts, calibration, etc., contact Aeroflex directly, please.