Online calculator - 2%, 5%, 10% SMD resistor
Resistors:
Capacitors and Inductors:
Calculate 2%, 5%, 10% SMD resistor: A03
Enter resistor value to get code:
Choose code to get SMD resistor value:
Standard SMD Resistor Values - decade 100 to 1000 Ω
2% tolerance | 5% tolerance | 10% tolerance |
100 Ω, 110 Ω, 120 Ω, 130 Ω
150 Ω, 160 Ω, 180 Ω, 200 Ω
220 Ω, 240 Ω, 270 Ω, 300 Ω
330 Ω, 360 Ω, 390 Ω, 430 Ω
470 Ω, 510 Ω, 560 Ω, 620 Ω
680 Ω, 750 Ω, 820 Ω, 910 Ω
|
100 Ω, 110 Ω, 120 Ω, 130 Ω
150 Ω, 160 Ω, 180 Ω, 200 Ω
220 Ω, 240 Ω, 270 Ω, 300 Ω
330 Ω, 360 Ω, 390 Ω, 430 Ω
470 Ω, 510 Ω, 560 Ω, 620 Ω
680 Ω, 750 Ω, 820 Ω, 910 Ω
|
100 Ω, 120 Ω
150 Ω, 180 Ω
220 Ω, 270 Ω
330 Ω, 390 Ω
470 Ω, 560 Ω
680 Ω, 820 Ω
|
Other resistance decades:
0.1 - 1 Ω,
1 - 10 Ω,
10 - 100 Ω,
100 - 1000 Ω,
1 - 10 kΩ,
10 - 100 kΩ,
100 - 1000 kΩ,
1 - 10 MΩ,
10 - 100 MΩ The SMD resistor code A03 stands for 120 Ω / 2%, in words: one hundred and twenty Ohms with two percent tolerance.
SMD resistors with a 2%, 5% or 10% tolerance can be marked using A11 format (letter followed by two digits). The letter indicates the multiplier.
The digits (numbers) range from 01 to 60. They have a double function: they indicate the value and the tolerance at the same time.
The numeric combinations from 01 to 24 indicate 24 values of the E24 table and a 2% tolerance.
The combinations from 25 to 48 indicate 24 values of the E24 table again, but with a 5% tolerance.
Finally, the combinations from 49 to 60 indicate 12 values of the E12 table with a 10% tolerance.
The usage of a letter prevents the confusion with 3-digit marking system. The letter is at the beginning to prevent confusion with EIA-96 marking of +/- 1% resistors.
Code "D03", for example, indicates a 120 kiloohm resistor. The number 03 indicates the 3rd value of the E24 table (120) and D indicates
multiplication by 1000. The value is then 120 x 1000 = 120 000 ohms or 120 kiloohms. The number is in 01 - 24 range, so the tolerance is 2%.
Code "D27" means the same value (120 kiloohms) but with a 5% tolerance, because range 25 - 48 means 5%.
Number 27 is 3rd in this range, indicating the 3rd value of E24 table - value 120.
Letter D indicates multiplication by 1000, just like in the previous example. Code "D51" is a 150 kiloohm resistor. The tolerance
is 10%, because the number is in the 49 to 60 range. Number 51 is 3rd in this range, indicating the 3rd value of E12 - value 150. Letter D multiplies by 1000 as always.
Note that 2% and 5% resistors have 24 possible values per decade, while 10% resistors only have 12 possible values per decade.
This is a simple online calculator for color band resistor marking, inductor color band marking,
ceramic, film or tantalum capacitor 3 digit marking and SMD resistor 3-digit, 4-digit, 10%, 5%, 2% and EIA-96 (E96) 1% tolerance code marking.
This tool is for reference only. I do not guarantee correctness of any information provided. You use this website at your own risk.