I wanted to select resistor values for a voltage divider that sets the output voltage of a buck converter. I picked the values recommended in the datasheet, because 3.3V is a standard value there were recommended resistor values. But what if there weren't? The different sets of standard resistor values are known by their E-series numbers: E6 has six resistance values in each decimal interval, E12 has twelve, E24 has twenty-four and so forth. Table of all nominal resistance values of resistors, which conform to E24 series. Е24 1.0 1.1 1.2 1.3 1.5 1.6 1.8 2.0 2.2 2.4 2.7 3.0 3.3 3.6 3.9 This graph shows how any value between 1 and 10 is within ±10% of an E12 series value, and its difference from the ideal value in a geometric sequence. By Anders Andersson from Wikimedia Commons . While it is possible to have a 3.3kΩ resistor with 20% tolerance test out between 2.64kΩ and 3.96kΩ, I would be hesitant to use it. 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. Looking recently at our resistor sets I was somewhat puzzled by the odd values involved. We have two sets of resistors: the E12 series and the E24 series. The E24 series has twice as many resistors for each scale (1-10, 100-1000, 1000-10000, etc.) as the E12, with the number after the 'E' telling you how many resistors are in the series. Resistor E series tables of values Below are the common resistor values. They are the standard E3, E6, E12, E24, E48 and E96 resistor values. E3 STANDARD RESISTOR SERIES 1.0 2.2 4.7 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 Values (ohms), Standard E24 range E12 range bold 1 1.1 1.2 1.3 1.5 1.6 1.8 2.0 2.2 2.4 2.7 3.0 3.3 3.6 3.9 4.3 4.7 5.1 5.6 6.2 6.8 7.5 8.2 9.1 Multiply the above values by 10, 100, 1000, 10,000, 100,000, or 1,000,000. The largest standard resistor is 10,000,000 ohms. Resistor Values (ohms), Standard E24 range E12 range bold 1 1.1 1.2 1 In industrial design, preferred numbers (also called preferred values or preferred series) are standard guidelines for choosing exact product which gives resistor values from 1 to 82 ohms (Ω). The E series is another system of preferred numbers. It consists of the E1, E3, E6, E12, E24, E48, E96 and E192 series. Based on some of the 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 calculator to find the closest standard capacitor (or resistor) value in each of the IEA series. E192: 0.5%, 0.25%, 0.1% resistors E48: 2% resistors. E24: 5% resistors. E12: some capacitors, 10% resistors. E6: most capacitors, some inductors. Thinkcalculator.com provides you helpful and handy calculator resources. The gain of the inverting op-amp can be calculated using the formula: A = − R2 R1 A = − R 2 R 1, while the gain of the non-inverting op-amp is given as: A = 1 + R2 R1 A = 1 + R 2 R 1. To increase the gain, two or more op-amps are cascaded. The overall gain is then the product of the gains of each op-amp (sum if the gain is given in dB). Each series is shown under an associated value of tolerance %. The num ber series under the ± 10 % column is known as the E12 Series because there are 12 standard values within a decade range. ± 2 % and ± 5 % utilize the E24 Series, ± 1 % uses E96 and ± 0.1 %, ± 0.25 % and ± 0.5 % use E192. Successive values within a decade series are The other three are the resistor the capacitor and the memristor. E24 inductor values. The eight official e24 values shown in bold do not exist in the e48 e92 e192 series. Mouser offers inventory pricing datasheets for e24 inductors chokes coils. To calculate the e48 series. Values for resistors in these series are given below. In this article you'll find an interactive table in which you can find the standard resistor values, as used in electronics, and defined by the IEC. You'll find the values for the E6, E12, E24, E48, E96 and E192 Series (or "preferred resistor values") in this table. This can be useful when trying to find a matching resistor value when So, for a 560 ohm, 5% resistor the color stripes will be green, blue, brown and gold. Green and blue are the first significant digits (56); brown is the multiplier (10 1 = 10) and gold is the tolerance (5%). 56 x 10 = 560Ω. If the 3rd band would be red instead of brown, the multiplier would be (10 2 = 100) instead of 10 and the resistor value 0P6i2C.

e24 series resistor values