[NLRS] Help!

Fri, 24 Oct 2003 17:45:30 -0500

Most of the polarized surface mount caps we use at work have the white band
on one end or a small + mark. I treat the banded end as Plus. A quick look
at the bottom of a 3.5" hard drive confirmed this. Lots of little caps with
the non-banded end going to ground. 

If the cap has some letters and three numbers as the only markings, the
numbers are the capacitor value and you treat it like a resistor. 475 would
be 4,700,000 pf or 4.7uf. 106 would be 10,000,000pf or 10uf. 

73, Doug Reed, N0NAS. 

At 03:24 PM 10/24/2003 -0500, Dan Larson wrote:
>If it is a tantalum chip capacitor, then the stripe indicates *positive*.
>Tantalum chip capacitors are usually a yellow-gold color. On normal
>electrolytic caps, the stripe down the side indicates negative, but its
>also marked "-".
>
>If you have a couple of extra parts, wire two up in opposite directions
>across a battery. The one that doesn't get hot / and / or blow is the
>one with the correct polarity!
>
>Dan
>
>
>On Fri, 24 Oct 2003 14:54:00 -0500, Clair J. Robinson wrote:
>
>>How does one identify the polarity of a polarized chip capacitor? I DO
>>need to know.
>>
>>CJ, K0CJ
>>
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