Resistor preferred values

According to IEC-60063 international standard

Introduction

The IEC-60063 standard defines six series (E6, E12, E24, E48, E96, E192) of preferred values for some electronic components like capacitors, inductances and resistors. The E6 series is every other element of the E12 series, which is every other element of the E24 series; The same applies to the E48, E96 and E192.
Each preferred value can be multiplied by a power of ten starting from 10-2 to 107.

For resistors, the series is choosen according to the tolerance of the resistor and the correspondances are the following: E6 for 20%, E12 for 10%, E24 for 5%, E48 for 2%, E96 for 1% and E196 for <1%. This means that a resistor with a tolerance of 5% may only have a resistance which is a multiple (or submultiple) of the values found in the E24 series.

The IEC-60063 standard series of preferred values are written in the following two tables. The first one contains the first three series, with a base value of two digits, and the second one contains the last three series, with a base value of three digits.

Standard values

Sort by
E6 (20%)E12 (10%)E24 (5%)
101010
11
1212
13
151515
16
1818
20
222222
24
2727
30
333333
36
3939
43
474747
51
5656
62
686868
75
8282
91
E48 (2%)E96 (1%)E192 (<1%)
100100100
101
102102
104
105105105
106
107107
109
110110110
111
113113
114
115115115
117
118118
120
121121121
123
124124
126
127127127
129
130130
132
133133133
135
137137
138
140140140
142
143143
145
147147147
149
150150
152
154154154
156
158158
160
162162162
164
165165
167
169169169
172
174174
176
178178178
180
182182
184
187187187
189
191191
193
196196196
198
200200
203
205205205
208
210210
213
215215215
218
221221
223
226226226
229
232232
234
237237237
240
243243
246
249249249
252
255255
258
261261261
264
267267
271
274274274
277
280280
284
287287287
291
294294
298
301301301
305
309309
312
316316316
320
324324
328
332332332
336
340340
344
348348348
352
357357
361
365365365
370
374374
379
383383383
388
392392
397
402402402
407
412412
417
422422422
427
432432
437
442442442
448
453453
459
464464464
470
475475
481
487487487
493
499499
505
511511511
517
523523
530
536536536
542
549549
556
562562562
569
576576
583
590590590
597
604604
612
619619619
626
634634
642
649649649
657
665665
673
681681681
690
698698
706
715715715
723
732732
741
750750750
759
768768
777
787787787
796
806806
816
825825825
835
845845
856
866866866
876
887887
898
909909909
919
931931
942
953953953
965
976976
988