Mystery Resistor

[cscott242]

Can someone tell me the watts of this resistor?
Thank you in advance if you help me.
I don’t know the voltage.
Brown, Black, Red, Black?

[Jwillis]

Difficult to say without a point of reference to size. Measure the diameter and length of the body. But going by the wire size it looks like 1/4 watt. 

[barshatriplee]

The size looks like 1W to me.

[Zero999]

Without knowing the size, it's impossible to tell. It appears to be made of a ceramic material. so will be able to tolerate a higher temperature, thus more power, than a carbon or metal film resistor of the same size.

[cscott242]

Thank you very much! Here is a more logical pic.

[Zero999]

Thank you very much! Here is a more logical pic.

Visit an electronic component distributor's website.

Go to the section of the site for through hole resistors.

Select axial and the dimensions of the component, about 12mm in this case.

Look at the results.

Here's an example showing Farnell's website.
https://uk.farnell.com/w/c/passive-components/resistors-fixed-value/through-hole-resistors?resistor-case-package=axial-leaded&product-length=12mm

It's probably either 1W, or 2W, depending on whether it's carbon film, or metal oxide/wire wound. Going by your picture, it's probably not carbon film, so the power rating will be 2W. Note that, if you intend to use it anywhere near 2W, then it will get very hot and should be mounted on stand-offs, so as to avoid burning the PCB.

[cscott242]

Wow. Thank you very much. This is amazing that this site exists and you helped me. Thank you

[Gyro]

What was the reason for you removing the resistor? Has it gone open circuit? If so, it might be a fusible resistor, designed to open safely to protect against fire under circuit fault conditions. A little background might be helpful.

[Wallace Gasiewicz]

Usually fusible resistors have the last band in the color WHITE
Wire wound resistors have the last color BLACK
The exterior construction also suggests a wire wound.

[Gyro]

Sure. It's worth checking though, this is the beginners section and we don't have any context to go on.

[Wallace Gasiewicz]

Yea, if the resistor is "open" then perhaps chipping away some of the surface would reveal some wire.