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
Standard Resistor Value Series and Tolerances The standard E3, E6, E12, E24, E48 and E96 resistor values are listed below. *The calculated tolerance for this series is 36.60%, While the standard only specifies a tolerance greater than 20%, other sources indicate 40% or 50%.Standard values of nominal resistance are taken from the E24 series for resistors with a tolerance of ±5%, and E96 series for resistors with a tolerance of ±1%. The values of the E24/E96 series are in accordance with "IEC publication 60063" Derating The power that the resistor can dissipate depends on the operating temperature; see Fig.2
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
The E6, E12, and E24 series have had some their values moved around a bit . The E48 and E96 series exactly match the geometric series. The E192 Figure 3 shows a set of bars that illustrate the range of values covered each resistor value in the E6 series. Note that each resistor range overlaps with the adjacent resistor ranges.Table of all nominal resistance values of resistors, which conform to E24 series. E24. Nominal values of resistances. 1.0. 0.1 Ω. 1 Ω. 10 Ω. 100 Ω. 1k Ω.
Resistor finder. Finds a combination of two series or parallel connected resistors for a custom value. Returns a list of the best values found. Example 1: Must calculate the combination of 1% resistors to produce a resistance of 66 kilo-ohms. You may use one of the following SI prefix after a value: p=pico, n=nano, u=micro, m=milli, k=kilo, M
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.*4: E192 series resistance values are also available. Please contact us for details. *5: Duplicated resistance values between E96, E192 and E24 series shall follow E24 Part Numbers. (apply three digit resistance value) Power derating curve. For resistors operated in ambient temperatures . above 85 ℃, power rating shall be derated inTechnical Note TN005 -Standard Values for Resistors Standard Resistor Values and Commonly Associated Tolerances 2%, 5% 10% 20% E24 E12 E6 1 1.78 3.16 5.62 1 3.16 1 1 1 1 49 97 145 1.01 1.8 3.2 5.69 1.02 3.24 1.1 1.2 1.5 2 50 98 146 1.02 1.82 3.24 5.76 1.05 3.32 1.2 1.5 2.2 3 51 99 147Identify unknown resistors by using the BS8152 codes for values and tolerances. Recognise resistor values when written on circuit diagrams. Identify unknown resistors using a printed numerical code. Select resistors for use in a circuit from the E12 and E24 series values. Use appropriate markings to determine the power rating of a resistor.The parts list of the amplifier I built is: • 2N5457 JFET • 1x 10k Resistor • 1x 2.2k Resistor • 1x 820 Ohm Resistor (I didn't have a 750 Ohm resistor) • 1x 100k Resistor • 1x 22nF Capacitor • 1x 1uF Capacitor For my input capacitor, I used a Poly cap and for the output I used a Philips electrolytic cap. Many people are against
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.
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
