ค่า resistor ที่มีจำหน่าย (E series)

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tong
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ค่า resistor ที่มีจำหน่าย (E series)

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E series

In electronics, international standard IEC 60063 defines another preferred number series for resistors, capacitors, inductors and Zener diodes. It works similarly to the Renard series, except that it subdivides the interval from 1 to 10 into 6, 12, 24, etc. steps. These subdivisions ensure that when some arbitrary value is replaced with the nearest preferred number, the maximum relative error will be on the order of 20%, 10%, 5%, 1%, etc.

The IEC 60063 numbers are as follows. The E6 series is every other element of the E12 series, which is in turn every other element of the E24 series. With the E48 series, a third decimal place is added, and the values are slightly adjusted. Again, the E48 series is every other value of the E96 series, which is every other value of the E192 series.

E6 (20%)
10      15      22      33      47      68
E12 (10%)
10  12  15  18  22  27  33  39  47  56  68  82
E24 (5%)
10  12  15  18  22  27  33  39  47  56  68  82
  11  13  16  20  24  30  36  43  51  62  75  91
E48 (2%)
100  121  147  178  215  261  316  383  464  562  681  825
 105  127  154  187  226  274  332  402  487  590  715  866
  110  133  162  196  237  287  348  422  511  619  750  909
   115  140  169  205  249  301  365  442  536  649  787  953
E96 (1%)
100  121  147  178  215  261  316  383  464  562  681  825
 102  124  150  182  221  267  324  392  475  576  698  845
  105  127  154  187  226  274  332  402  487  590  715  866
   107  130  158  191  232  280  340  412  499  604  732  887
    110  133  162  196  237  287  348  422  511  619  750  909
     113  137  165  200  243  294  357  432  523  634  768  931
      115  140  169  205  249  301  365  442  536  649  787  953
       118  143  174  210  255  309  374  453  549  665  806  976
E192 (0.5%)
100  121  147  178  215  261  316  383  464  562  681  825
 101  123  149  180  218  264  320  388  470  569  690  835
  102  124  150  182  221  267  324  392  475  576  698  845
   104  126  152  184  223  271  328  397  481  583  706  856
    105  127  154  187  226  274  332  402  487  590  715  866
     106  129  156  189  229  277  336  407  493  597  723  876
      107  130  158  191  232  280  340  412  499  604  732  887
       109  132  160  193  234  284  344  417  505  612  741  898
        110  133  162  196  237  287  348  422  511  619  750  909
         111  135  164  198  240  291  352  427  517  626  759  920
          113  137  165  200  243  294  357  432  523  634  768  931
           114  138  167  203  246  298  361  437  530  642  777  942
            115  140  169  205  249  301  365  442  536  649  787  953
             117  142  172  208  252  305  370  448  542  657  796  965
              118  143  174  210  255  309  374  453  549  665  806  976
               120  145  176  213  258  312  379  459  556  673  816  988
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