Analysis of the difference between alloy resistance and ordinary resistance

In the world of electronic components, resistors are an important foundational component. Alloy resistance and ordinary resistance, as two major categories of resistance, have many significant differences between them. This article will provide you with a detailed introduction to the differences between alloy resistors and ordinary resistors, helping you better understand the characteristics and applications of these two types of resistors

Definition and Basic Principles

Alloy resistance

Alloy resistor is a type of resistor made of metal alloy materials, whose resistance value varies relatively little with temperature. The main components of alloy resistors include metal materials, precious metals, and some special functional materials. Due to the diversity of alloy materials, alloy resistors can meet various performance requirements, such as low temperature coefficient, high stability, high power, etc

Ordinary resistor

A common resistor (also known as a fixed resistor) is a commonly used resistor, mainly made of materials such as ceramics, glass, metal, etc. The resistance value of a regular resistor is fixed and does not change with temperature. Ordinary resistors are widely used in various electronic devices, such as power supplies, amplifiers, switches, etc

Performance differences

Temperature coefficient

Alloy resistance has a lower temperature coefficient (TC), which means that its resistance value changes less with temperature. In contrast, the temperature coefficient of a regular resistor is relatively large, and its resistance value will increase with the increase of temperature. Therefore, in applications that require sensitivity to temperature changes, such as temperature control systems, precision measurements, etc., alloy resistance has more advantages

Power characteristics

Alloy resistors exhibit good characteristics in high-power applications, such as withstanding high currents, high voltages, etc. This is because the metal materials in alloy resistors have high conductivity and thermal conductivity, which can effectively withstand high currents and high temperature environments. However, ordinary resistors have poor performance in this regard and are usually only suitable for low-power applications

Stability

Alloy resistance has high stability, and its resistance value will not undergo significant changes due to mechanical vibration, magnetic field interference, and other factors. In contrast, ordinary resistors have poor stability and are easily affected by external environments, leading to changes in resistance values. Therefore, in applications that require high stability, such as communication equipment, testing instruments, etc., alloy resistors are more suitable

Application field

Automotive electronics: Alloy resistors have a wide range of applications in automotive electronic systems, such as sensors, actuators, controllers, and other devices that require alloy resistors to achieve signal transmission and control functions

Household appliances: Alloy resistors are also needed in household appliances such as air conditioners, refrigerators, etc. to achieve circuit control and protection functions. In addition, some household appliances with special functions, such as water heaters, washing machines, etc., also choose to use alloy resistors to improve the performance and reliability of the products