+ or - on a capacitor

[hyudryu]

I bought a 10uF 16V tantalum capacitor surface mount and im not sure which is negative. Its yellow and im assuming that the brown strip has to do with the polarity but im not sure if thats positive or negative Help please. Thanks

 

[jackorocko]

Well, if precedence matters, the stripe on a electrolytic cap is the neg '-'
Better wait till someone with some more experience chimes in though.

A search of the site produced this thread https://www.electronicspoint.com/which-side-tantalum-capacitor-do-attach-ground-t19772.html

 

[Resqueline]

Tantalums have their polarity mark on the positive side, which also "happens" to be on the right side when facing the text and having the pins pointing down.

 

[hyudryu]

Tantalums have their polarity mark on the positive side, which also "happens" to be on the right side when facing the text and having the pins pointing down.

Thanks. I read somewhere that those surface mount capacitors can blow up if not connected correctly.

 

[hyudryu]

Tantalums have their polarity mark on the positive side, which also "happens" to be on the right side when facing the text and having the pins pointing down.

And i desoldered a surface mount electrolytic capacitor that is silver and has a black stripe at the end that looks like a half moon. How do i read it?
It says:
100
6s
CD5

What does that mean?

 

[(*steve*)]

Thanks. I read somewhere that those surface mount capacitors can blow up if not connected correctly.

That's kinda true of any polarised capacitor. Some may not blow up, but it's a bad idea.

And i desoldered a surface mount electrolytic capacitor that is silver and has a black stripe at the end that looks like a half moon.

like this?

How do i read it?
It says:
100
6s
CD5

What does that mean?

Not sure. Possibly 100 uF

 

[hyudryu]

That's kinda true of any polarised capacitor. Some may not blow up, but it's a bad idea.



like this?

Not sure. Possibly 100 uF

Yes its those. Oh well. I will go google then

 

[(*steve*)]

Where did it come from? And what size is it? It's not a completely reliable measure, but capacitors get larger as their capacitance and voltage ratings increase. If the size corresponds to a 100uF 5V or 6V electrolytic, and it came from logic circuitry powered by (or having a regulator providing) 5 volts, then its likely that the 5 or 6 corresponds to the voltage.

 

[hyudryu]

Tantalums have their polarity mark on the positive side, which also "happens" to be on the right side when facing the text and having the pins pointing down.

If there is no brown strip, is it not polarized?
Also, do you know how to read the numbers and letters on a small tantalum Surface mount capacitor? I bought 2 kinds but i can't remember which one was which

 

[(*steve*)]

There should be some method of identifying the +ve or -ve lead. The specs should tell you.

The specs will also likely tell you what markings you should expect to see on the capacitors.

If you don't have the specs, and can't find out the manufacturer and part number of the caps then take a good sharp photograph of them with the markings readable and we'll have a go for you.

 

[hyudryu]

There should be some method of identifying the +ve or -ve lead. The specs should tell you.

The specs will also likely tell you what markings you should expect to see on the capacitors.

If you don't have the specs, and can't find out the manufacturer and part number of the caps then take a good sharp photograph of them with the markings readable and we'll have a go for you.

Ok thanks

The font is a little wierd i think its"
D2LE
B47
9714

 

[Resqueline]

The brand name is Dale. I'd expect the B to be a code for the voltage rating and 47 is the capacitance, possibly 0.47uF. 9714 is the manufacturing date; 1997, week 14.

 

[(*steve*)]

And looking at it, it doesn't look like a polarised capacitor.

 

[hyudryu]

The brand name is Dale. I'd expect the B to be a code for the voltage rating and 47 is the capacitance, possibly 0.47uF. 9714 is the manufacturing date; 1997, week 14.

I get it now I get how to read it THANKS A LOT