Comparison table of resistance specifications for SMD resistors, allowing you to easily choose the right SMD resistor

In the manufacturing process of electronic devices, SMT resistors, as a common component, are widely used for circuit protection, voltage division, coupling, sampling, and other functions. However, there are many types of SMT resistors on the market, with different specifications and resistance values. How to quickly and accurately select the appropriate SMT resistor has become an important issue faced by electronic engineers. To solve this problem, we have specially compiled a comparison table for the specifications and values of SMD resistors, allowing you to easily choose the appropriate SMD resistor

1、 Classification and characteristics of SMT resistors

Divided by power: According to the power of the SMT resistor, it can be divided into high-power resistors and low-power resistors. High power resistors are mainly used in power supplies, motors, lighting and other situations that need to withstand high current loads; Low power resistors are mainly used in precision instruments, communication equipment, and other applications that require high precision and temperature

Classified by precision: According to the precision level of SMT resistors, they can be divided into coarse precision resistors and fine precision resistors. The resistance range of coarse precision resistors is relatively large, with an error generally within ± 0.5%; The resistance range of precision resistors is relatively small, with an error generally within ± 0.05%

Divided by resistance range: According to the resistance range of SMT resistors, they can be divided into ordinary resistors, high-voltage resistors, low-voltage resistors, ultra-low resistance resistors, etc. The resistance range of a regular resistor is generally between Ω 1-10M Ω; The resistance range of high-voltage resistors is generally 1M Ω -100M Ω; The resistance range of low-voltage resistors is generally 100K Ω -1M Ω; The resistance range of ultra-low resistance resistors is generally below 1 Ω

2、 Comparison Table of Chip Resistor Specifications and Resistance Values

Due to space limitations, only some common specifications of SMT resistors are listed here for reference:

|Specification and model | Resistance (Ω) | Power (W) | Accuracy level | Package size (mm2) | Remarks|

|-------- | -------- | -------- | -------- | -------- | --------|

|1R0402 | 4.7 | 6 | ± 0.5% | 0603 ||

|1M0402 | 10 | 6 | ± 0.5% | 0603 ||

|1M0503 | 15.8 | 6 | ± 0.5% | 0603 ||

|1M0603 | 19.5 | 6 | ± 0.5% | 0603 ||

|2M0603 | 39 | 6 | ± 0.5% | 0603 ||

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By referring to this comparison table of resistance specifications for SMD resistors, you can quickly find the required SMD resistors and choose appropriate parameters based on actual application scenarios. Meanwhile, mastering the basic knowledge of SMT resistors can help improve your technical level in this field. I hope this comparison table of SMT resistor specifications can bring convenience to your work and make you more proficient in the manufacturing process of electronic devices