• Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.

Unusual SMD Resistor Markings

Status
Not open for further replies.

Mikebits

Well-Known Member
I came across a SMD resistor with value markings that I have never seen before. (See image below). The Green resistor markings are new to me. So is it supposed to be 2000 with a x10 or what. I would just measure it, but it is in parallel with something that gives it a value around 1.2K
Is there a marking standard like the EIA or something?
Thanks

smtresistor.png
 

Mikebits

Well-Known Member
A possibility, but ONLY a possibility: Green is 5 in the EIA color-code for % of resistor value here, 2 is first significant number then 0 and 1 means one more zero. SO, I'm guessing: 200 ohms 5% But I could be wrong. :eek: Try looking here and see what you get: http://www.radio-electronics.com/info/data/resistor/smd_resistor/smt-resistor-markings-systems.php
Thanks but 200 ohm is not possible. As I had mentioned above, I measured ~1.2k, and we know resistor rule of thumb: By putting resistors in parallel you always get a smaller resistor and since I measured >1k the resistor must be > than 200.
My curiosity got the best of me so I removed the resistor and measured it with my recently calibrated Keithly 2010 DMM. What I measured completely surprised me as I measured 2.799066k , not at all what I expected. Was the tiny sideways zeros actually an 8? Did I somehow damage the part when I removed it?
 
Last edited:

Mikebits

Well-Known Member
I'm such a dope. Sure it makes sense now that I measured it out of circuit. It is just standard 4 digit marking code. The number 8 was just made goofy which threw me off. So we got 280 with a 10 time multiplier for 2800.
Case closed
 
Status
Not open for further replies.

Latest threads

EE World Online Articles

Loading
Top