The labeling rules of SMD resistor in circuit board circuit diagrams

    SMD resistor are not the same in the circuit diagram and the unit of the potentiometer, they have certain rules. Size resistance is in megohm With E, mark the unit M. The size is 1 megohm, marked 1M; 2.7 megohm, marked

2.7 million.

    SMD resistor

The resistance value is between 1 kiloohm and 100 kiloohm, and the unit is marked as k. For example, 5.1 thousand

Euro, marked 5.1k; 68 kiloohm, marked 68k.

The resistance is between 100 kilohms and 1 megohm, and it can be marked with the unit k or

Mark the unit M. Some 360 ??kiloohms can be marked with 360k or marked

360,000.

    SMD resistor

If the resistance value is less than 1 kiloohm, it can be marked with unit 2 or not.

For example, 5.1 ohms can be marked 5.19 or 5.1; 680 ohms can be marked

6809 or 680.

    Common sense of the use of resistors. According to the requirements of the circuit

Select the type and error of resistance. In a general circuit, use error

A carbon film resistor of 10% or even 20% will do.

The rated power of the resistor should be replaced by 1.5~2 times the actual power.

In order to ensure that the resistance is durable. Use a multimeter before inserting the resistor into the circuit

Ohm file to verify its resistance. When installing, make the type of resistance

Symbols such as value are easy to see, and the knight verifies.