Fixed Resistors Appendix Standard for Resistance Value, Resistance Tolerance and Color Code ■ Basis Standard IEC Publication 60062: Marking codes for resistors and capacitors. IEC Publication 60063: Preferred number series for resistors and capacitors. JIS C 5062: Marking codes for resistors and capacitors. JIS C 5063: Preferred number series for resistors and capacitors. ■ Resistance Values The resistance values are notched by “Ratio” below in each series. Resistance Tolerance (Standard) Series Ratio ±20 % 6 ±10 % 12 ± 5 % 24 E48 ± 2 % 48 E96 ± 1 % 96 E6 E12 E24 Remarks √10=1.46 √10=1.21 √10=1.10 √10=1.05 Please refer to standard resistance values shown on this catalog. √10=1.02 ■ How to express the resistance value with a Panasonic part number. The resistance value expressed in ohms is identified by a three digit number or a four digit number. The last digit specifies the number of zeroes to follow. The letter “R” shall be used as the decimal point for less than 10 ohm. The examples of a three digit number The examples of a four digit number Resistance Code Value in ohms Resistance Code Value in ohms R56 5R6 100 271 102 273 104 275 106 107 0.56 5.6 10 270 1 k 27 k 100 k 2.7 M 10 M 100 M R562 5R62 56R2 1000 2711 1002 2713 1004 2715 1006 0.562 5.62 56.2 100 2.71 k 10 k 271 k 1 M 27.1 M 100 M -75- 01 Aug. 2012 Fixed Resistors Appendix ■ How to express the resistance tolerance with a Panasonic part number The resistance tolerance is identified by a single letter in accordance with the following table and the code is placed just before the resistance code in the following examples. Tolerance Code Tolerance (%) W B C D F G J K M ±0.05 ±0.1 ±0.25 ±0.5 ±1 ±2 ±5 ±10 ±20 Examples W1001 : B1001 : C1001 : D1001 : F1001 : G1001 : J101 : K101 : M101 : 1000 Ω±0.05 % 1000 Ω±0.1 % 1000 Ω±0.25 % 1000 Ω±0.5 % 1000 Ω±1 % 1000 Ω±2 % 100 Ω±5 % 100 Ω±10 % 100 Ω±20 % ■ Color code indication for the resistance value and the tolerance Fixed resistors whose resistance value and tolerance are indicated by color code follow the standard below. Color code Color Black Brown Red Orange Yellow Green Blue Violet Gray White Gold Silver None First digit Second digit Third digit Multiplier 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 1 10 2 10 3 10 4 10 5 10 6 10 7 10 –1 10 –2 10 Indication example Color code of 5 color bands When the standard resistance value follows E48 series or 96 series, color code of the resistors are indicated by five color bands. Example below is 154 kΩ. Resistance tolerance % Code ±1 ±2 ±0.05 F G W ±0.5 ±0.25 ±0.1 D C B ±5 ±10 ±20 J K M Color code of 4 color bands When the standard resistance value follows E6 series, 12 series or 24 series, color code of the resistors are indicated by four color bands. Example below is 15 kΩ. Example 1 Example 2 1st Color 2nd Color 3rd Color 4th Color 5th Color 1st Color 2nd Color 3rd Color 4th Color Brown (1) Green (5) Yellow (4) Orange (1000) Brown (±1 %) Brown (1) Green (5) Orange (1000) Gold (±5 %) -76- 01 Aug. 2012 Fixed Resistors Appendix ■ Standard Resistance Values E6 10 E12 10 E24 10 E48 100 E96 100 E6 E12 E24 22 22 22 E48 215 102 105 110 E6 E12 E24 47 47 47 E48 464 221 105 226 107 11 E96 215 475 226 487 232 110 237 E96 464 487 499 237 51 511 511 24 113 115 243 115 249 118 12 536 255 121 261 124 536 549 127 13 127 274 133 287 15 140 30 301 147 316 274 590 287 62 619 33 619 634 301 316 590 604 649 649 665 68 68 68 681 324 33 562 576 309 150 154 562 294 143 147 56 280 137 140 56 27 130 133 261 267 27 15 249 12 121 15 523 681 698 33 154 332 158 332 715 340 715 732 16 162 162 348 165 348 75 750 357 750 768 36 169 169 365 174 365 787 374 806 82 178 18 178 18 383 39 383 825 392 187 402 191 196 82 825 39 182 187 787 845 402 866 412 196 422 422 866 887 91 909 909 43 20 200 205 432 205 442 210 442 453 -77- 931 953 953 976 01 Aug. 2012