Electronics Forum | Sun Sep 27 10:42:35 EDT 1998 | l atch
I'm looking for a chart that will help me identify smt resistors and capacitors. I have figured out a few on my own. a resistor with the numbers 510 printed on it was a 51 ohm resistor. numbers 221 was a 220 ohm resistor. numbers 102 was a 1k resis
Electronics Forum | Tue Jun 23 17:57:23 EDT 1998 | Larry Hurst
Does anybody have any data on the thermal resistance and thermal time constant of 0805 and 1206, metal film, surface mount resistors when mounted on a typical PC board? Even approximate informatin would be useful. Thanks in anticipation. Larry Hurst
Electronics Forum | Wed Jun 25 11:53:01 EDT 2003 | gmurray
Does anyone have a listing of recommended usage requirements on SMT components. Can you use SMT resistors which are over 3 years old for example ? Can you use ICs which are not known to be moisture sensitive but which are over 5 years old.
Electronics Forum | Tue Oct 12 08:12:20 EDT 1999 | robert parker
any advice on smt resistors and capacitor that can survive an explosive shock. the ceramic smts are not, plastic ic's and discretes do fine.
Electronics Forum | Thu Aug 16 10:52:47 EDT 2001 | vickij
Hi all! I am looking at some precision SMT resistors, and am confused by what they mean by Temperature Coefficient (TCR) of whatever % ppm. Are they talking about from room temperature? Any info would be appreciated. Thanks!
Electronics Forum | Thu Oct 16 13:18:13 EDT 2003 | jseagle
3 digits usually means 5% i.e. 103 = 10K 5% 4 digits means 1% i.e. 1002 = 10K 1% Otherwise you will have to use Dave's method.
Electronics Forum | Thu Oct 16 10:56:23 EDT 2003 | james
We received some parts from our stores room with out a part number. We have 2 to choose from one being a 5% and one being a .1%. Does the color of the resistor mean anything? Just need some help on this. Thanks.
Electronics Forum | Thu Oct 16 13:36:01 EDT 2003 | russ
The color does mean something, If you know the manufacturer their spec sheet will tell you. The three and 4 digit only applies to larger resistors, There are 1% 0603 that have only 3 digits. You may want to just call them all 5%. Russ
Electronics Forum | Mon Sep 28 09:18:30 EDT 1998 | Ben Wilmot
The majority of SMT resistors use the following notation. 10 X eg 153 represents 1k5 resistor The third digit in the sequence denotes the number of zeros to add after the first two digits giving the value in ohms. Many Caps will follow the same nota
Electronics Forum | Fri Dec 08 16:54:42 EST 2006 | flipit
My experience with SMT LED packages is that certain LED package styles tend to float. This floating is caused because the LED is often only terminated on the bottom side of the LED package. Sometimes the LEDs are terminated like a SMT resistor with
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