The difference and comparison between alloy resistance and thick film resistance

In the world of electronic components, resistors are a common component whose main function is to limit the flow of current. There are two main types of resistors widely used: alloy resistors and thick film resistors. Although they have similar functions, their working principles, performance, and application areas are different. This article will compare in detail the similarities and differences between these two types of resistors

Working principle of alloy resistance

Alloy resistance: Alloy resistance is made by mixing metal oxides and other materials, which form thin films at high temperatures. When current passes through the resistor, the resistance on the metal oxide film guides the current to other parts of the circuit. The main advantages of alloy resistors are their stability and reliability, which make them visible in various applications

Thick film resistor: Thick film resistor is manufactured by covering a thin film on a conductor, which is composed of conductive materials. When the current passes through the resistor, electrons in the conductive material will be guided to other parts of the circuit. The main advantages of thick film resistors are their low cost and high output, making them ideal choices for many applications

Performance comparison of alloy resistance

&Nbsp; Temperature coefficient: The temperature coefficient of alloy resistance is usually low, which means they are not very sensitive to changes in ambient temperature. However, the temperature coefficient of thick film resistors is relatively high, which means they may experience performance fluctuations under extreme temperature conditions

Power bearing capacity: Due to the tighter structure of alloy resistors, they can withstand higher power. In contrast, thick film resistors have lower power tolerance

Adjustable: Alloy resistors are usually easier to adjust than thick film resistors because their design allows for precise changes in resistance values. However, thick film resistors can also change their resistance value through fine-tuning, although it may not be as convenient as alloy resistors

Size and shape: Due to different manufacturing processes, the size and shape of alloy resistors and thick film resistors may vary. Alloy resistors are usually thinner, while thick film resistors are thicker. In addition, alloy resistors can have various shapes, such as cylindrical, flat, etc., while thick film resistors are usually square or rectangular

Alloy resistanceApplication fields

Alloy resistance: Alloy resistance is widely used in fields such as power supply, signal control, measurement and testing equipment. Due to their stability and reliability, alloy resistors are particularly important in aerospace, military, and industrial applications

Thick film resistors: Thick film resistors are mainly used in consumer electronics products, such as televisions, computers, and mobile phones. Due to their low cost and high output, thick film resistors have a competitive advantage in these fields

Although alloy resistors and thick film resistors are common electronic components, they differ in their working principles, performance, and application areas. When selecting the appropriate resistor, it is necessary to weigh these factors according to specific needs