A Brazilian soccer fan.I repaired my friend’s compressor and found a strange component. What component is this?
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UB isn't a standard reference designator so its a bit of a mystery. Looks very small, the sort of size some low value ceramic caps are.
Striped tant's I've never seen, but some searching suggests a thermistor is possible: https://www.silicon-ark.co.uk/ntcle100e3272jbo-ntc-thermistor-by-vishay
Striped tant's I've never seen, but some searching suggests a thermistor is possible: https://www.silicon-ark.co.uk/ntcle100e3272jbo-ntc-thermistor-by-vishay
Looks to me like a vintage tantalum. If so the coloring is a code for values: http://www.csgnetwork.com/capcctantcalc.html
Edit: I think Mark might be right. Here's a color coding system for thermistors: https://female-page.ru/en/useful-pu...special-resistors-marking-of-thermistors.html
Edit: I think Mark might be right. Here's a color coding system for thermistors: https://female-page.ru/en/useful-pu...special-resistors-marking-of-thermistors.html
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Tantalum drops are always polarized, meaning it should have a mark of some kind, dot or strip and the PCB silkscreen should also show it.
I have seen this aspect in thermistors, and also low-voltage VDR's, the fore-runners of modern ZNO varistors.
Some types of selelenium clippers (having more or less the same function, for an even lower voltage) had a comparable look, but in a modern equipment, my bet is on thermistors (which is easy to check)
I have seen this aspect in thermistors, and also low-voltage VDR's, the fore-runners of modern ZNO varistors.
Some types of selelenium clippers (having more or less the same function, for an even lower voltage) had a comparable look, but in a modern equipment, my bet is on thermistors (which is easy to check)
You are REALLY in need of some kind of measurement, starting, why not? with a simple resistance check, without desoldering it, and then melting solder on one leg for 2 seconds, without removing it, and remeasuring it to check whether resistance changes when hot or not.
2 important checks in less than 2 minutes.
Talk is cheap, testing rules.
Sadly not in DIYA where people LOVE to engage in 200 page flame wars with no measurements backing either side.
Oh well.
2 important checks in less than 2 minutes.
Talk is cheap, testing rules.
Sadly not in DIYA where people LOVE to engage in 200 page flame wars with no measurements backing either side.
Oh well.
That's most likely a capacitor
I agree, test it.
It can be a resistor (why didn't they use a standard resistor like everything else)
Could be a capacitor in which case your meter will read open on a resistance check in both directions.
It could be a diode, in which case you'd show short one direction and open the other.
Most of the other options have 3+ leads.
My guess, is it's a capacitor and you'll find the value by decoding the stripes.
Perhaps it's the variety of caps named "Tropical fish" for their colorful stripes...
I doubt it's a resistor and I doubt it's a diode.
Striped ceramic cap.
Instead of printing the value, they coded it in stripes.
I agree, test it.
It can be a resistor (why didn't they use a standard resistor like everything else)
Could be a capacitor in which case your meter will read open on a resistance check in both directions.
It could be a diode, in which case you'd show short one direction and open the other.
Most of the other options have 3+ leads.
My guess, is it's a capacitor and you'll find the value by decoding the stripes.
Perhaps it's the variety of caps named "Tropical fish" for their colorful stripes...
I doubt it's a resistor and I doubt it's a diode.
Striped ceramic cap.
Instead of printing the value, they coded it in stripes.
Check with an analog meter, in lowest resistance range, it will conduct and then the resistance will go up.
Check with reversed polarity also.
That tells you if it is a capacitor, but not the value, you will have to search for that. Or use a capacitance meter.
Check with reversed polarity also.
That tells you if it is a capacitor, but not the value, you will have to search for that. Or use a capacitance meter.
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There is another device marked UB4, that seems to have only 2 stripes.
First things first:
Is the unit working?
If yes, leave it alone.
If not, try and make a schematic, and then maybe we will see.
And country of origin, please...Soviet and Chinese equipment markings are different, particularly for equipment not intended to be serviced.
I have seen LEDs in that shape...
Also, the possibility of making an equivalent unit has to be though of, if needed.
First things first:
Is the unit working?
If yes, leave it alone.
If not, try and make a schematic, and then maybe we will see.
And country of origin, please...Soviet and Chinese equipment markings are different, particularly for equipment not intended to be serviced.
I have seen LEDs in that shape...
Also, the possibility of making an equivalent unit has to be though of, if needed.