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# How to check the resistance value of the chip resistor?

Source: Industry News Editor: PingShang Click: Release time: 2021-12-24 08:17:23

How to check the resistance value of the chip resistor?

Here is a piece of chip resistor. Do you know how to look at the size of the resistance? Here is how to look at the size of the chip resistor. I will teach you how to check the size of the resistor. Understand the three-digit and four-digit chip resistors in the next chip resistors. The size of the view method.

What is the resistance value of the chip resistor marked 7R00?

7R00 is 7 ohms, where R is the unit ohm, which is equivalent to the role of a decimal point. The front is the integer part, and the back is the decimal part. For example, R700 is 0.7 ohms, 70R0 is 70 ohms. Of course, four digits are used for more than 100 ohms. Three digits are significant digits, and the last digit is the number of zeros behind. For example, 7001 is 7000 Euros. The nominal method of chip resistors is as follows: use three digits to mark, the first two digits are significant digits, and the third digit indicates the number of 0 after the significant digit. For example, 251 means 25 ohms. Use four digits to indicate Indicates that the first three digits represent numbers, and the fourth digit represents power, such as 1542 for 15.4.

Generally it is 3 digits, the last digit is the number of 0, and then added to the first two digits, it is the resistance value, and the number of 0 in the last digit is added to the first 3 digits after the 4 digits.

Read out four pieces of data, multiply to give the data, and add them.

The resistance error accuracy of the chip resistor has ±1%, ±2%, ±5%, ±10% accuracy, and the most commonly used ones are ±1% and ±5%.

The standard of ±5% accuracy is to use three digits to represent Example 323, the first two digits are significant digits, and the third digit 2 indicates how many zeros there are. The basic unit is Ω, which is 32000 ohms, 1000Ω=1KΩ, 1000000Ω =1MΩ.

In order to distinguish the resistance of ±5% and ±1%, the resistance of ±1% is usually represented by 4 digits.

In this way, the first three digits represent valid digits, and the fourth digit represents how many zeros 5321, which is 5320Ω, which is equal to 5.32KΩ