Difference between revisions of "Resistor Color Codes"
| Line 8: | Line 8: | ||
the fourth band tells you how many zeros to add, and the fifth band | the fourth band tells you how many zeros to add, and the fifth band | ||
tells you the tolerance. | tells you the tolerance. | ||
| + | == Digit, Multiplier, and Tolerance Band Chart == | ||
<center> | <center> | ||
{|class="wikitable" style="text-align:center" | {|class="wikitable" style="text-align:center" | ||
| − | | | + | | Color || Color Name || Digit band || Multiplier band || Tolerance band |
|- | |- | ||
| − | | Black || 0 || 1 || | + | | style="background:black" | || Black || 0 || 1 || |
|- | |- | ||
| − | | Brown || 1 || 10 || ± 1% | + | | style="background:brown" | || Brown || 1 || 10 || ± 1% |
|- | |- | ||
| − | | Red || 2 || 100 || ± 2 % | + | | style="background:red" | || Red || 2 || 100 || ± 2 % |
|- | |- | ||
| − | | Orange || 3 || 1000 || | + | | style="background:orange" | || Orange || 3 || 1000 || |
|- | |- | ||
| − | | Yellow || 4 || 10,000 || | + | | style="background:yellow" | || Yellow || 4 || 10,000 || |
|- | |- | ||
| − | | Green || 5 || 100,000 || ± 0.5 % | + | | style="background:green" | || Green || 5 || 100,000 || ± 0.5 % |
|- | |- | ||
| − | | Blue || 6 || 1,000,000 || ± 0.25 % | + | | style="background:blue" | || Blue || 6 || 1,000,000 || ± 0.25 % |
|- | |- | ||
| − | | Violet || 7 || 10,000,000 || ± 0.10 % | + | | style="background:purple" | || Violet || 7 || 10,000,000 || ± 0.10 % |
|- | |- | ||
| − | | Gray || 8 || 100,000,000 || ± 0.05 % | + | | style="background:gray" | || Gray || 8 || 100,000,000 || ± 0.05 % |
|- | |- | ||
| − | | White || 9 || 1,000,000,000 || | + | | style="background:white" | || White || 9 || 1,000,000,000 || |
|- | |- | ||
| − | | Gold || || 0.1 || ± 5 % | + | | style="background:gold" | || Gold || || 0.1 || ± 5 % |
|- | |- | ||
| − | | Silver || || 0.01 || ± 10 % | + | | style="background:silver" | || Silver || || 0.01 || ± 10 % |
|- | |- | ||
| − | | None || || || ± 20 % | + | | style="background:tan" | || None || || || ± 20 % |
|} | |} | ||
</center> | </center> | ||
| Line 61: | Line 62: | ||
or 472 * 1000000000 = 472±10\% GΩ. | or 472 * 1000000000 = 472±10\% GΩ. | ||
| + | Note that the same value resistor will have a different multiplier band color in the four-band scheme than in the five-band scheme. A 1 kΩ resistor will be brown-black-red-TOL in the first case and brown-black-black-brown-TOL in the second. | ||
== Questions == | == Questions == | ||
| Line 66: | Line 68: | ||
== External Links == | == External Links == | ||
| + | * Wikipedia page on [http://en.wikipedia.org/wiki/Electronic_color_code Electronic color code] | ||
| + | * [Graphical resistance calculator] by Danny Goodman | ||
| + | |||
== References == | == References == | ||
<references /> | <references /> | ||
| − | |||
| − | |||
Revision as of 14:55, 7 July 2008
Contents
Introduction
The resistance value for a resistor is generally indicated through the use of a 4 (or 3, or 5) band color code. For a typical four-band code, the first two bands tell you the first two digits of the resistance, the third band tells you how many zeros to add, and the fourth band tells you the tolerance. For a five-band color code, the first three bands tell you the first three digits of the resistance, the fourth band tells you how many zeros to add, and the fifth band tells you the tolerance.
Digit, Multiplier, and Tolerance Band Chart
| Color | Color Name | Digit band | Multiplier band | Tolerance band |
| Black | 0 | 1 | ||
| Brown | 1 | 10 | ± 1% | |
| Red | 2 | 100 | ± 2 % | |
| Orange | 3 | 1000 | ||
| Yellow | 4 | 10,000 | ||
| Green | 5 | 100,000 | ± 0.5 % | |
| Blue | 6 | 1,000,000 | ± 0.25 % | |
| Violet | 7 | 10,000,000 | ± 0.10 % | |
| Gray | 8 | 100,000,000 | ± 0.05 % | |
| White | 9 | 1,000,000,000 | ||
| Gold | 0.1 | ± 5 % | ||
| Silver | 0.01 | ± 10 % | ||
| None | ± 20 % |
Examples
Four-band Resistor
A resistor that has bands (starting from the band on the part of the resistor with the largest radius) of blue-gray-brown-gold will be:
\( \mbox{blue }\mbox{ gray }*\mbox{ brown }\pm\mbox{ gold} \)
resistor, or 68 * 10 = 680±5% Ω.
Five-band resistor
A yellow-violet-red-white-silver resistor would be:
\( \mbox{yellow }\mbox{ violet }\mbox{ red }*\mbox{ white } \pm \mbox{ silver } \)
or 472 * 1000000000 = 472±10\% GΩ.
Note that the same value resistor will have a different multiplier band color in the four-band scheme than in the five-band scheme. A 1 kΩ resistor will be brown-black-red-TOL in the first case and brown-black-black-brown-TOL in the second.
Questions
Post your questions by editing the discussion page of this article. Edit the page, then scroll to the bottom and add a question by putting in the characters *{{Q}}, followed by your question and finally your signature (with four tildes, i.e. ~~~~). Using the {{Q}} will automatically put the page in the category of pages with questions - other editors hoping to help out can then go to that category page to see where the questions are. See the page for Template:Q for details and examples.
External Links
- Wikipedia page on Electronic color code
- [Graphical resistance calculator] by Danny Goodman
