Resistance Values

Intro
Standard 5% Resistor Vals
3 Band Color Codes
4 Band Color Codes
5 Band Collor Codes
10% Colors
5% and 1% Codes
Table Of Standard Tolerance Vals


Standard EIA Decade Resistor Values Table

The Electronic Industries Association (EIA), and other authorities, specify
standard values for resistors, sometimes referred to as the "preferred value" system. The
preferred value system has its origins in the early years of the last
century at a time when most resistors were carbon-graphite with relatively
poor manufacturing tolerances. The rationale is simple - select values for
components based on the tolerances with which they are able to be
manufactured. Using 10% tolerance devices as an example, suppose that the
first preferred value is 100 ohms. It makes little sense to produce a 105
ohm resistor since 105 ohms falls within the 10% tolerance range of the 100
ohm resistor. The next reasonable value is 120 ohms because the 100 ohm
resistor with a 10% tolerance is expected to have a value somewhere between
90 and 110 ohms. The 120 ohm resistor has a value ranging between 110 and
130 ohms. Following this logic, the preferred values for 10% tolerance
resistors between 100 and 1,000 ohms would be 100, 120, 150, 180, 220, 270,
330 and so on (rounded appropriately); this is the E12 series shown in the
table below.

The EIA "E" series specify the preferred values for various tolerances. The
number following the "E" specifies the number of logarithmic steps per decade.
The table below is normalized for the decade between 100 and 1,000. The
values in any decade can be derived by merely dividing or multiplying the
table entries by powers of 10. The series are as follows:




Chart of Standard 5% Resistors
	
	 
	24 Rows, 7 Cols



3 Band Color Codes
	 



4 Band Color Codes
	


5 Band Collor Codes
	 
	 
=======================================================


10%-colors








E12 series (tolerance 10%)
10 12 15 18 22 27
33 39 47 56 68 82

	 



5%-and-1%-codes








E24 series (tolerance 5% and 1%)
10 11 12 13 15 16
18 20 22 24 27 30
33 36 39 43 47 51
56 62 68 75 82 91

=======================================================



Table of All Tolerance Values
Table From: https://www.vishay.com/docs/31001/dectable.pdf 










STANDARD DECADE RESISTANCE VALUES
The following table lists four established number series which are used as preferred values in electronic design. Each series
is shown under an associated value of tolerance %. The number series under the ± 10 % column is known as the E12 Series
because there are 12 standard values within a decade range. ± 2 % and ± 5 % utilize the E24 Series, ± 1 % uses E96 and
± 0.1 %, ± 0.25 % and ± 0.5 % use E192. Successive values within a decade series are related (approximately) by a factor
of for the E12 Series, for the E24 Series, for the E96 Series and for the E192 Series.
Use of standard values is encouraged because stocking programs are designed around them. However, intermediate values
can be special ordered where permitted. Consult factory.

±0.1%
±0.25%
±0.5%     ±1%
±0.1%
±0.25%
±0.5%     ±1%
±0.1%
±0.25%
±0.5%     ±1%
±0.1%
±0.25%
±0.5%     ±1%
±0.1%
±0.25%
±0.5%     ±1%
±0.1%
±0.25%
±0.5%     ±1%
±2%
±5%     ±10%
10.0    10.0 14.7    14.7 21.5    21.5 31.6    31.6 46.4    46.4 68.1    68.1 10    10
10.1 14.9 21.8 32.0 47.0 69.0 11    -
10.2    10.2 15.0    15.0 22.1    22.1 32.4    32.4 47.5    47.5 69.8    69.8 12    12
10.4 15.2 22.3 32.8 48.1 70.6 13    -
10.5    10.5 15.4    15.4 22.6    22.6 33.2    33.2 48.7    48.7 71.5    71.5 15    15
10.6 15.6 22.9 33.6 49.3 72.3 16    -
10.7    10.7 15.8    15.8 23.2    23.2 34.0    34.0 49.9    49.9 73.2    73.2 18    18
10.9 16.0 23.4 34.4 50.5 74.1 20    -
11.0    11.0 16.2    16.2 23.7    23.7 34.8    34.8 51.1    51.1 75.0    75.0 22    22
11.1 16.4 24.0 35.2 51.7 75.9 24    -
11.3    11.3 16.5    16.5 24.3    24.3 35.7    35.7 52.3    52.3 76.8    76.8 27    27
11.4 16.7 24.6 36.1 53.0 77.7 30    -
11.5    11.5 16.9    16.9 24.9    24.9 36.5    36.5 53.6    53.6 78.7    78.7 33    33
11.7 17.2 25.2 37.0 54.2 79.6 36    -
11.8    11.8 17.4    17.4 25.5    25.5 37.4    37.4 54.9    54.9 80.6    80.6 39    39
12.0 17.6 25.8 37.9 55.6 81.6 43    -
12.1    12.1 17.8    17.8 26.1    26.1 38.3    38.3 56.2    56.2 82.5    82.5 47    47
12.3 18.0 26.4 38.8 56.9 83.5 51    -
12.4    12.4 18.2    18.2 26.7    26.7 39.2    39.2 57.6    57.6 84.5    84.5 56    56
12.6 18.4 27.1 39.7 58.3 85.6 62    -
12.7    12.7 18.7    18.7 27.4    27.4 40.2    40.2 59.0    59.0 86.6    86.6 68    68
12.9 18.9 27.7 40.7 59.7 87.6 75    -
13.0    13.0 19.1    19.1 28.0    28.0 41.2    41.2 60.4    60.4 88.7    88.7 82    82
13.2 19.3 28.4 41.7 61.2 89.8 91    -
13.3    13.3 19.6    19.6 28.7    28.7 42.2    42.2 61.9    61.9 90.9    90.9
13.5 19.8 29.1 42.7 62.6 92.0
13.7    13.7 20.0    20.0 29.4    29.4 43.2    43.2 63.4    63.4 93.1    93.1
13.8 20.3 29.8 43.7 64.2 94.2
14.0    14.0 20.5    20.5 30.1    30.1 44.2    44.2 64.9    64.9 95.3    95.3
14.2 20.8 30.5 44.8 65.7 96.5
14.3    14.3 21.0    21.0 30.9    30.9 45.3    45.3 66.5    66.5 97.6    97.6
14.5 21.3 31.2 45.9 67.3 98.8


E24 series (tolerance 5% and 1%)
10	11	12	13	15	16
18	20	22	24	27	30
33	36	39	43	47	51
56	62	68	75	82	91


STANDARD DECADE RESISTANCE VALUES The following table lists four established number series which are used as preferred values in electronic design. Each series is shown under an associated value of tolerance %. The number series under the ± 10 % column is known as the E12 Series because there are 12 standard values within a decade range. ± 2 % and ± 5 % utilize the E24 Series, ± 1 % uses E96 and ± 0.1 %, ± 0.25 % and ± 0.5 % use E192. Successive values within a decade series are related (approximately) by a factor of for the E12 Series, for the E24 Series, for the E96 Series and for the E192 Series. Use of standard values is encouraged because stocking programs are designed around them. However, intermediate values can be special ordered where permitted. Consult factory.
±0.1% ±0.25% ±0.5% ±1%	±0.1% ±0.25% ±0.5% ±1%	±0.1% ±0.25% ±0.5% ±1%	±0.1% ±0.25% ±0.5% ±1%	±0.1% ±0.25% ±0.5% ±1%	±0.1% ±0.25% ±0.5% ±1%	±2% ±5% ±10%
10.0 10.0	14.7 14.7	21.5 21.5	31.6 31.6	46.4 46.4	68.1 68.1	10 10
10.1	14.9	21.8	32.0	47.0	69.0	11 -
10.2 10.2	15.0 15.0	22.1 22.1	32.4 32.4	47.5 47.5	69.8 69.8	12 12
10.4	15.2	22.3	32.8	48.1	70.6	13 -
10.5 10.5	15.4 15.4	22.6 22.6	33.2 33.2	48.7 48.7	71.5 71.5	15 15
10.6	15.6	22.9	33.6	49.3	72.3	16 -
10.7 10.7	15.8 15.8	23.2 23.2	34.0 34.0	49.9 49.9	73.2 73.2	18 18
10.9	16.0	23.4	34.4	50.5	74.1	20 -
11.0 11.0	16.2 16.2	23.7 23.7	34.8 34.8	51.1 51.1	75.0 75.0	22 22
11.1	16.4	24.0	35.2	51.7	75.9	24 -
11.3 11.3	16.5 16.5	24.3 24.3	35.7 35.7	52.3 52.3	76.8 76.8	27 27
11.4	16.7	24.6	36.1	53.0	77.7	30 -
11.5 11.5	16.9 16.9	24.9 24.9	36.5 36.5	53.6 53.6	78.7 78.7	33 33
11.7	17.2	25.2	37.0	54.2	79.6	36 -
11.8 11.8	17.4 17.4	25.5 25.5	37.4 37.4	54.9 54.9	80.6 80.6	39 39
12.0	17.6	25.8	37.9	55.6	81.6	43 -
12.1 12.1	17.8 17.8	26.1 26.1	38.3 38.3	56.2 56.2	82.5 82.5	47 47
12.3	18.0	26.4	38.8	56.9	83.5	51 -
12.4 12.4	18.2 18.2	26.7 26.7	39.2 39.2	57.6 57.6	84.5 84.5	56 56
12.6	18.4	27.1	39.7	58.3	85.6	62 -
12.7 12.7	18.7 18.7	27.4 27.4	40.2 40.2	59.0 59.0	86.6 86.6	68 68
12.9	18.9	27.7	40.7	59.7	87.6	75 -
13.0 13.0	19.1 19.1	28.0 28.0	41.2 41.2	60.4 60.4	88.7 88.7	82 82
13.2	19.3	28.4	41.7	61.2	89.8	91 -
13.3 13.3	19.6 19.6	28.7 28.7	42.2 42.2	61.9 61.9	90.9 90.9
13.5	19.8	29.1	42.7	62.6	92.0
13.7 13.7	20.0 20.0	29.4 29.4	43.2 43.2	63.4 63.4	93.1 93.1
13.8	20.3	29.8	43.7	64.2	94.2
14.0 14.0	20.5 20.5	30.1 30.1	44.2 44.2	64.9 64.9	95.3 95.3
14.2	20.8	30.5	44.8	65.7	96.5
14.3 14.3	21.0 21.0	30.9 30.9	45.3 45.3	66.5 66.5	97.6 97.6
14.5	21.3	31.2	45.9	67.3	98.8