List Resistor Value Chart

Standard resistance value is obtained from the above chart by multiplying by powers of 10. For example many resistor manufacturers make every single value on the e24 list in 1 and 2 tolerance even though the practice makes little mathematical sense.

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The resistor value is read from the left to right.

List resistor value chart. As the chart at the right shows created in excel plotting the values on a logarithmic scale results in a straight line due to the exponential in the equation. The table or chart given below provides the resistor values for pi and t pad rf resistor attenuator circuits. Standard value decade for 1 resistors author.

113 can be 113 113 113k 113k 113k or 113meg brannon electronics inc. 4 band resistor color code calculator and chart digikey electronics. Resistor color code guide 2 0 x10000 10 20 x 10000 200000 1000 1k resistor 200 k with a 10 tolerance first band second band multiplier band tolerance band equation the gold or silver band is always placed to the right.

To use this tool simply click on a particular color and number and watch how the actual bands on the resistor illustration change. In 1952 the iec international electrotechnical commission decided to define the resistance and tolerance values into a norm to ease the mass manufacturing of resistors. Tom brannon created date.

The resistor color code calculator decodes and identifies a value and tolerance of 4 band wire wound resistors. Bridged t attenuator pad rf attenuator resistor values chart. Our resistor color code calculator is a handy tool for reading carbon composition resistors whether its a 4 band 5 band or 6 band type.

More online conversion calculators at digi key. If there is no tolerance band then find the side that has. These are referred to as preferred values or e series and they are published in standard iec 600631963.

The values in this table have been calculated for a characteristic impedance of 50w. 1 the resistor color code and the eia preferred values are internationally accepted standards but some manufacturers have their own way of doing things. Standard resistor values are calculated using the simple formula given below.

This is the e12 series shown in the table below. Bridged t section attenuator pad resistors. Standard resistor values 5 10 10 100 10k 10k 100k 10m 11 11 110 11k 11k 110k 11m 12 12 120 12k 12k 120k 12m 13 13 130 13k 13k 130k 13m.

Following this logic the preferred values for 10 tolerance resistors between 100 and 1000 ohms would be 100 120 150 180 220 270 330 and so on rounded appropriately. Resistor pi section attenuator pad. The 120 ohm resistor has a value ranging between 110 and 130 ohms.

Round the results to the proper number of significant figures three for 1 and 2 two for 5 and 10.

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