Datasheet

1/20/2018 Resistors - learn.sparkfun.com
https://learn.sparkfun.com/tutorials/resistors?_ga=2.11435260.915074398.1516331036-531257354.1515063447 4/10
Color Digit value Multiplier Multiplied Out Tolerance
Black 0 10 1
Brown 1 10 10
Red 2 10 100
Orange 3 10 1,000
Yellow 4 10 10000
Green 5 10 100,000
Blue 6 10 1,000,000
Violet 7 10 10,000,000
Gray 8 10 100,000,000
White 9 10 1,000,000,000
Gold ±5%
Silver ±10%
Here’s an example of a 4.7kΩ resistor with four color bands:
When decoding the resistor color bands, consult a resistor color code table like the one above. For the first two bands, find that color’s corresponding digit value. The 4.7kΩ
resistor has color bands of yellow and violet to begin - which have digit values of 4 and 7 (47). The third band of the 4.7kΩ is red, which indicates that the 47 should be
multiplied by 10 (or 100). 47 times 100 is 4,700!
If you’re trying to commit the color band code to memory, a mnemonic device might help. There are a handful of (sometimes unsavory) mnemonics out there, to help
remember the resistor color code. A good one, which spells out the difference between black and brown is:
"Big brown rabbits often yield great big vocal groans when gingerly snapped."
Or, if you remember “ROY G. BIV”, subtract the indigo (poor indigo, no one remembers indigo), and add black and brown to the front and gray and white to the back of the
classic rainbow color-order.
Color Code Calculator
If you’d rather skip the math (we won’t judge :), and just use a handy calculator, give this a try!
Band 1 Band 2 Band 3 Band 4
Value 1 (MSV) Value 2 Weight Tolerance
Brown (1)
Black (0)
Red (100)
Gold (± 5%)
Resistance: 1,000 Ω ±5%
Decoding surface-mount markings
SMD resistors, like those in 0603 or 0805 packages, have their own way of displaying their value. There are a few common marking methods you’ll see on these resistors.
They’ll usually have three to four characters – numbers or letters – printed on top of the case.
If the three characters you’re seeing are all numbers, you’re probably looking at an E24 marked resistor. These markings actually share some similarity with the color-band
system used on the PTH resistors. The first two numbers represent the first two most-significant digits of the value, the last number represents a magnitude.
In the above example picture, resistors are marked 104, 105, 205, 751, and 754. The resistor marked with 104 should be 100kΩ (10x10 ), 105 would be 1MΩ (10x10 ), and
205 is 2MΩ (20x10 ). 751 is 750Ω (75x10 ), and 754 is 750kΩ (75x10 ).
Another common coding system is E96, and it’s the most cryptic of the bunch. E96 resistors will be marked with three characters – two numbers at the beginning and a letter
at the end. The two numbers tell you the first three digits of the value, by corresponding to one of the not-so-obvious values on this lookup table.
CodeValue CodeValue CodeValue CodeValue CodeValue CodeValue
01 100 17 147 33 215 49 316 65 464 81 681
02 102 18 150 34 221 50 324 66 475 82 698
03 105 19 154 35 226 51 332 67 487 83 715
04 107 20 158 36 232 52 340 68 499 84 732
05 110 21 162 37 237 53 348 69 511 85 750
06 113 22 165 38 243 54 357 70 523 86 768
07 115 23 169 39 249 55 365 71 536 87 787
08 118 24 174 40 255 56 374 72 549 88 806
09 121 25 178 41 261 57 383 73 562 89 825
10 124 26 182 42 267 58 392 74 576 90 845
11 127 27 187 43 274 59 402 75 590 91 866
12 130 28 191 44 280 60 412 76 604 92 887
13 133 29 196 45 287 61 422 77 619 93 909
14 137 30 200 46 294 62 432 78 634 94 931
15 140 31 205 47 301 63 442 79 649 95 953
0
1
2
3
4
5
6
7
8
9
2
4 5
5 1 4