Standard resistor values
In order to simplify trade and design, The Electronic Industries Alliance (EIA) and others, have specified standard values for resistors. In the most common system, the E-series, preferred values are selected to fall uniformly on a logarithmic scale with the spacing determined by the resistor tolerance.
The E-series are as follows. The number following the "E" specifies the number of values per decade.
- E3 - 50% tolerance
- E6 - 20% tolerance
- E12 - 10% tolerance
- E24 - 5% and 2% tolerance
- E48 - 2% tolerance
- E96 - 1% tolerance
- E192 - higher tolerances
Standard resistor values in the 100 to 1,000 decade
E192 E96 E48 E24 E12 E6 E3
---- --- --- --- --- --- ---
100 100 100 100 100 100 100
101
102 102
104
105 105 105
106
107 107
109
110 110 110 110
111
113 113
114
115 115 115
117
118 118
120 120 120
121 121 121
123
124 124
126
127 127 127
129
130 130 130
132
133 133 133
135
137 137
138
140 140 140
142
143 143
145
147 147 147
149
150 150 150 150 150
152
154 154 154
156
158 158
160 160
162 162 162
164
165 165
167
169 169 169
172
174 174
176
178 178 178
180 180 180
182 182
184
187 187 187
189
191 191
193
196 196 196
198
200 200 200
203
205 205 205
208
210 210
213
215 215 215
218
220 220 220 220
221 221
223
226 226 226
229
232 232
234
237 237 237
240 240
243 243
246
249 249 249
252
255 255
258
261 261 261
264
267 267
270 270
271
274 274 274
277
280 280
284
287 287 287
291
294 294
298
300
301 301 301
305
309 309
312
316 316 316
320
324 324
328
330 330 330
332 332 332
336
340 340
344
348 348 348
352
357 357
360
361
365 365 365
370
374 374
379
383 383 383
388
390 390
392 392
397
402 402 402
407
412 412
417
422 422 422
427
430
432 432
437
442 442 442
448
453 453
459
464 464 464
470 470 470 470 470
475 475
481
487 487 487
493
499 499
505
510
511 511 511
517
523 523
530
536 536 536
542
549 549
556
560 560
562 562 562
569
576 576
583
590 590 590
597
604 604
612
619 619 619
620
626
634 634
642
649 649 649
657
665 665
673
680 680 680
681 681 681
690
698 698
706
715 715 715
723
732 732
741
750 750 750 750
759
768 768
777
787 787 787
796
806 806
816
820 820
825 825 825
835
845 845
856
866 866 866
876
887 887
898
909 909 909
910
920
931 931
942
953 953 953
965
976 976
988
