There are also E12, E24, E48, E96 and E192 series for components of progressively finer resolution, with 12, 24, 48 are a code that indicates one of the 96 "positions" in the standard E96 series of 1% resistor values. The uppercase letter is a code that indicates a power of ten multiplier. For example, the marking "01C" represents 10 kOhm
This app calculates the optimum resistor values for a voltage divider circuit, incorporating all resistors in the E12, E24, E48, E96 and E192 series.
The preferred number series produces a spacing that relates component values to their tolerances. For conventional resistors, the tolerances are ±20% (E6), ±10% (E12), ±5% (E24), ±2% (E48), and ±1% (E96). Some manufacturers produce resistors with more accurate tolerances at a higher cost. For resistors, the E96 and E192 series are less used.
Standard Series Values in a Decade for Resistances and Capacitances E3 TO E192 ACCORDING TO IEC 60063 E192 E96 E48 E192 E96 E48 E192 E96 E48 E192 E96 E48 E24 E12 E6 E3 100 100 100 178 178 178 316 316 316 562 562 562 10 10 10 10 101 180 320 569 11 102 102 182 182 324 324 576 576 12 12 104 184 328 583 13
The 5% set (also known as the E24 series) has 24 values between 100 and 1000, while the 1% set (also known as the E96 series) has 96 values in the same range. Let's say we need a 230 kΩ resistor based on some calculations. Checking the table we see that the closest 5% value is 220 kΩ, which is 4.3% below our desired value.
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 a 5% resistor? The tolerance gives the % deviation that the real value is allowed to be different from the stated or nominal value.
The values of resistors are of course quoted in Ohms (Ω), though with high values, Kilohms (KΩ) or Megohms (MΩ) are common units. With low values a circuit diagram may state a resistance value as for example 15R instead of 15Ω.
The following is a long list of all E24 series resistors - from 0.1 ohm to 10 M ohms - with the shorthand notation, tolerance range and color code. The 4th band is always gold (5% tolerance) for the E24 series. A 5th band may be present, indicating the reliability or the temperature coefficient.
The E12 series resistors have a silver fourth band and the E24 series resistors have a gold fourth band. E24 resistors have a tolerance of 5 per cent, meaning that the value of the resistor
Perceive the E3, E6, E12, E24, E48 & E96 series of standard resistor values: what they represent, tables of values, mystery they are used, wie they were derived, etc. Menu. Top; Electronics. Audio and See; Easy concepts; E6, E12, E24, E48 & E96 series of standard resistor values: what your are, desks of added, why they will used, how they
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e24 series resistor values