What is the resistance of the 470 chip resistor? Detailed explanation of chip resistor identification and application

In electronic components,Chip resistorIt is widely used because of its small size and stable performance. Especially in modern electronic products, SMDresistanceis used almost everywhere. Many beginners or non-professionals are often confused when they see the numerical identification on the chip resistor. For example, what resistance does "470" represent? This article will focus on the theme of "What is the resistance of 470 chip resistors?", analyze in detail the marking method of chip resistors, and introduce its practical application and selection skills.

Chip resistors generally use digital coding to represent resistance values. Commonly used are three-digit and four-digit numbers. Taking a three-digit number as an example, the first two digits represent the significant digits, and the third digit represents the power to which 10 is multiplied. For example, "47" in "470" is a valid number, and "0" means multiplying 10 to the power 0, which is 1. Therefore, the resistance of 470 is 47×1=47 ohms.

According to the above marking rules, the "470" on the chip resistor represents a resistance value of 47 ohms. It should be noted that many people mistakenly think that "470" means 470 ohms. In fact, this understanding is wrong. A 470-ohm chip resistor is generally marked as "471", which is 47 times 10 raised to the power of 10, which equals 470 ohms.

The resistance unit of chip resistors is usually ohms (Ω). In addition, there are also units such as kiloohms (kΩ) and megaohms (MΩ). Tolerance represents the deviation range of the actual resistance of the resistor relative to the nominal value. Common tolerances include ±1%, ±5%, etc. The tolerance of the chip resistor 470 determines that the actual resistance value may fluctuate within a certain range.

In addition to resistance value, chip resistors also have different size specifications, such as 0402, 0603, 0805, etc. Different sizes, power tolerance and application scenarios are also different. 470 value chip resistors need to be selected based on size specifications and actual needs.

In addition to numerical codes, some chip resistors also have color identification or letter codes. By consulting relevant standard information, the resistance value of the resistor can be accurately judged. For users who are not familiar with digital coding, measuring with a multimeter is the most direct method.

47 ohm chip resistors are widely used in filtering, current limiting, voltage dividing and other circuits. For example, in modules such as signal conditioning and power management, 47-ohm resistors are often used as current-limiting components to protect circuit safety.

When purchasing chip resistors, in addition to resistance value, you also need to pay attention to parameters such as power, tolerance, and temperature coefficient. Make sure the selected resistor meets the circuit design requirements to avoid circuit failure due to parameter inconsistency.

Chip resistors are small in size, so you need to pay attention to temperature control and welding time when welding to avoid damaging the components. Reasonable layout of resistor locations can help improve the stability and reliability of the circuit.

The resistance of chip resistor 470 is 47 ohms. This numerical code follows the standard marking rules for chip resistors. Understanding the marking method of chip resistors will help to correctly identify and select resistive components to ensure the normal operation of electronic products. Through the detailed analysis of this article, readers can better master the resistance identification skills and application knowledge of chip resistors, providing strong support for electronic design and maintenance.