SMT resistor power size chart provides accurate selection for your electronic products

In the production and maintenance process of electronic devices, SMT resistors are an indispensable component. They are used to implement functions such as resistance, capacitance, and inductance in circuits, while also having advantages such as small size and easy installation. This article will provide you with a detailed introduction to the power and size parameters of SMT resistors, helping you quickly and accurately select products that meet your needs

1、 Power chip resistor

The power specifications of SMT resistors are usually expressed in units of W (watts), and common power ranges include:

1 1/8 W (0.125 watts)

2 1/4 W (0.25 watts)

3 1/2 W (0.5 watts)

4 3/4 W (0.75 watts)

5 1 W (1 watt)

6 2 W (2 watts)

7 3 W (3 watts)

8 5 W (5 watts)

9 10 W (10 watts)

10 20 W (20 watts)

11 50 W (50 watts)

12 100 W (100 watts)

13 200 W (200 watts)

14 500 W (500 watts)

15 1 KW (1 kilowatt)

16 2 KW (2 kilowatts)

17 3 KW (3 kilowatts)

18 5 KW (5 kilowatts)

19 10 KW

20 20 KW (20 kilowatts)

21 50 KW

22 1 MW (1 megawatt)

23 2 MW (2 megawatts)

24 3 MW (3 megawatts)

25 4 MW (4 megawatts)

26 5 MW (5 megawatts)

27 6 MW (6 MW)

28 8 MW (8 megawatts)

29 10 MW (10 megawatts)

30 15 MW (15 megawatts)

31 20 MW (20 megawatts)

32 30 MW (30 megawatts)

33 40 MW (40 megawatts)

34 50 MW (50 megawatts)

35 Induction (Henry): In SMT resistors, magnetic flux is generated due to changes in current and voltage, resulting in induced electromotive force and induced current, which is the phenomenon of electromagnetic induction. Chip mounted inductors can be used to achieve this phenomenon, with the unit being Henry (H). Common inductance values include: μ H (microhertz), mH (millihertz), kH (kilohertz), MH (megahertz), GH (gigahertz)

2、 Size SMT resistor

The size of SMT resistors is usually measured in millimeters (mm), and common dimensions include:

-Divided by diameter: φ 0.6mm φ 1.0mm φ 1.25mm φ 2.0mm φ 2.54mm φ 3.25mm φ 4.76mm φ 6.35mm φ 8.5mm φ 12.5mm φ 16mm φ 18mm φ 22mm φ 25mm φ 32mm φ 44mm φ 56mm φ 68mm, etc. Among them, the number represents the diameter in millimeters

-Divided by spacing: 1x1mm, 2x1mm, 3x1mm, etc. Among them, the number represents the spacing in millimeters. For example, 2 x 1mm indicates that the center distance between two resistors is one millimeter

-Divided by shape: rectangular, elliptical, cylindrical, etc. Different shapes of SMT resistors have different performance characteristics, and users can choose the appropriate shape according to their actual needs