Resistor  0 ohm  0Ω   size  0805      จำนวน 6 ตัว ราคา 1 บาท
Resistor  100 ohm  100Ω  (+-5%) 1/8W Size  0805  จำนวน 6 ตัว ราคา 1 บาท
Resistor  1 Kohm  1KΩ  (+-5%) 1/8W Size  0805  จำนวน 6 ตัว ราคา 1 บาท
Resistor  10 Kohm 10KΩ  (+-5%) 1/8W Size  0805  จำนวน 6 ตัว ราคา 1 บาท
Resistor  100 Kohm 100KΩ  (+-5%) 1/8W Size  0805  จำนวน 6 ตัว ราคา 1 บาท
Resistor  1  Mohm 1MΩ  (+-5%) 1/8W Size  0805  จำนวน 6 ตัว ราคา 1 บาท

American Electronics Industry Association defines a standard resistor value system (in fact, capacitors and inductors system here is applicable), the system is defined in the last century, at that time were still carbon film resistor technology, the precision is very low. To understand the resistance system, take 10% precision resistors, if the first resistance is 100Ohm, 105Ohm do not need to, because the resistance of 100Ohm precision is 90 to 110Ohm, so the second sense resistor value is 120Ohm, 110Ohm resistance ranging from precision to 130Ohm. Analogy in this way from 100Ohm to 1000Ohm resistor value is 100, 120, 150, 180, 220, 270, 330, etc., which is defined in EIA E12 series resistor values. Some may ask why not, as 100, 120, 140, 160, 180, 200, so? In fact resistance value is counted in accordance with the following formula out, n that the first n-value, N the definition of the class that EIA (N = 192, 96, 48, 24, 12, 6, 3). If you ask why I use this formula? Look at this formula to know more profound, than I can answer.

EIA defines the precision of a few series resistance value, namely E3 E6 E12 E24 E48 E96 E192, E behind the figures represent the total from 100 to 1000 a number of resistance, other resistance index by 10 multiplication and division are, as 4.7Ohm, 4.7KOhm so. The accuracy of all the series definition and values as follows:

E3 50% accuracy (no longer in use)

E6 20% accuracy

E12 10% accuracy

E24 5% accuracy

E48 2% accuracy

E96 1% accuracy

E192 0.5%, 0.25%, 0.1% accuracy, and more