Detailed explanation of 0402 chip resistor model comparison table

As electronic products develop towards miniaturization and high performance,Chip resistorAs a basic component, its specifications and models are becoming more and more diverse. 0402 patchresistanceBecause of its small size and stable performance, it is widely used in mobile phones, computers, smart wearable devices and other fields. This article will comprehensively introduce the model comparison table of 0402 chip resistors to help engineers and purchasers quickly identify and select.

0402 refers to the package size of the chip resistor in inches. 0402 means the length is 0.04 inches (about 1.0 mm) and the width is 0.02 inches (about 0.5 mm). Chip resistors of this size are very small and suitable for high-density circuit board designs. 0402 chip resistors have various parameters such as resistance range, power level, tolerance and temperature coefficient. The model comparison table makes it easy to quickly find the corresponding specifications.

The standard size of 0402 chip resistors is 1.0mm×0.5mm, which complies with EIA (Electronic Industries Association) standards. The model number is usually marked with "0402" to easily distinguish other sizes such as 0603, 0805, etc. Package size directly affects resistor power and thermal performance.

The resistance range of 0402 chip resistors generally ranges from 1Ω to 10MΩ. The resistance value is expressed using a three-digit or four-digit digital encoding method, such as "103" indicating 10×10^3=10kΩ, and "472" indicating 4.7×10^2=470Ω. The codes corresponding to different resistance values ​​are detailed in the model comparison table.

Due to their small size, the power level of 0402 chip resistors is usually 1/16W (0.0625W) or 1/10W (0.1W). The power level affects the maximum current and heat generation of the resistor, and the actual power requirements of the circuit must be taken into consideration when selecting the type.

Tolerance represents the allowable deviation between the actual resistance value of the resistor and the nominal resistance value. Common tolerances include ±1%, ±5%, and ±10%. The common tolerances of 0402 chip resistors are ±1% and ±5%, and precision circuits mostly use ±1% tolerance components.

The temperature coefficient represents the sensitivity of the resistance value to changes in temperature and is expressed in ppm/°C. The temperature coefficient of 0402 chip resistors is generally between ±100ppm/°C and ±200ppm/°C. Precision applications require low TCR models.

0402 chip resistors are mainly available in two types: thick film and thin film.thick film resistorLow cost, stable performance, suitable for most applications; thin film resistors have higher precision, lower noise, suitable for high-precision circuits. The material type will be indicated in the model comparison table.

Different manufacturers have slightly different model names for 0402 chip resistors, but they generally include resistance value, power, tolerance and material information. Through the model comparison table, you can quickly compare products of the same specifications from different brands.

0402 chip resistors are widely used in mobile devices, medical electronics, automotive electronics and other fields. When selecting, the circuit design requirements should be considered, combined with power, resistance, tolerance and temperature coefficient, to ensure stable and reliable performance.

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