Table of Contents
What are the standard resistor values?
The most common series are:
- E6 20% tolerance.
- E12 10%
- E24 5% (also available with 1%)
- E48 2%
- E96 1%
- E192 0.5% (also used for resistors with 0.25% and 0.1%).
What is E12 value?
E12 series and preferred values. The E12 series has 12 values for each multiple of ten; it is used for resistors with 10% tolerance. The values are 10, 12, 15, 18, 22, 27, 33, 39, 47, 56, 68, 82, then it continues 100, 120, 150 etc. Notice how the E24 series has smaller value steps in between the gaps.
What is resistor E series or standard values?
The E3 series resistors are the most widely used and hence these values will be the most common resistor values used within the electronics industry….Resistor E series tables of values.
| E12 Standard Resistor Series | ||
|---|---|---|
| 1.0 | 1.2 | 1.5 |
| 1.8 | 2.2 | 2.7 |
| 3.3 | 3.9 | 4.7 |
| 5.6 | 6.8 | 8.2 |
What does E mean in resistors?
“E” is same as “Ω”. It is often used in case of high power resistors (power not being less than 5W). Sometimes you can see “R” written instead of “E”.
What are standard resistor values used for?
To simplify resistor manufacture, handling, purchase & electronic circuit design, resistor values are arranged into standard resistor values conforming to the E series. Resistor values are organised into a set of different series of preferred values or standard resistor values.
What does R mean in resistors?
Resistance
Resistance (R) is a property of a material used for describing the opposition provided to the flow of current. The higher the resistance provided by a material, the lower the flow of electrons or current through the material.
How many ohms is a standard resistor?
Take then a resistor with a value of 1.5 ohms. The resistance of this component at the bottom of its tolerance band is 1.2 ohms….E series of standard resistor values.
| Summary of EIA Preferred or Standard Resistor value Series | ||
|---|---|---|
| E Series | Tolerance (Sig Figs) | Number of values in each decade |
| E3 | >20% | 3 |
| E6 | 20% | 6 |
| E12 | 10% | 12 |
What is a 10E resistor?
10E= 10 Ohm (Ω)
How to calculate and understand resistor values?
Break down your circuit into series sections and parallel sections.
Why are resistors in standard values?
– So the current through R is I=V/R – The current through 2R is I=V/2R – The current through 3R is I=V/3R – The current through 4R is I=V/4R
How are resistor values measured?
First two letters gives the power dissipation capacity.
What are the values of a resistor?
This means that the value 52 MΩ can vary by up to 5% in either direction, so the value of the resistor is 49.4 MΩ – 54.6 MΩ. Coded components have at least three bands: two significant figure bands and a multiplier, but there are other possible variations.