an SMD resistor with a marking of 0, 00, 000 or 0000 is a jumper (a zero-ohm link). a chip resistor marked with the standard 3 digit code and a short bar below the marking denotes a precision (1% or less) resistor with a value taken from the E24 series (these values are usually reserved for 5% resistors). For example: 122 = 1.2kΩ 1%. Some Fig. 2.2.1 shows how these tolerance ranges are used in the E12 series of resistors to cover (almost) all possible values of resistance between 10Ω and 100Ω. The E12 series is so called because 12 'Preferred Values' of resistor, each having a tolerance range of +/-10% covers all values from 10Ω to 100Ω. This range of values is called a It's a 10kΩ 1% resistor. 120 is not a standard E96 series value so 120Ω 1% is unlikely, but not impossible. Since it is a standard E24 value though, as @Hearth correctly points out, many makers have upgraded their 5% resistors to 1% tolerance and offer 1% resistors in the E24 series, so that's not a 'tell'. Measurement is the only way to be sure. 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 Voltage Divider Calculator. A voltage divider circuit is a very common circuit that takes a higher voltage and converts it to a lower one by using a pair of resistors. The formula for calculating the output voltage is based on Ohms Law and is shown below. R 1 is the resistance of the 1st resistor, measured in Ohms (Ω). Standard Resistor Values: E3, E6, E12, E24, E48 & E96 Understand the E3, E6, E12, E24, E48 & E96 series from standard resistor values: what they are, indexes of values, why they are used, how they were inherited, etc. . 333 240 395 251 98 415 212 345

e24 series resistor values