Analysis of the difference between alloy patch resistance and thick film resistance

In the electronic component market, resistors are a widely used component in various electronic devices. With the development of technology, the types of resistors are becoming increasingly diverse. This article will mainly introduce the differences between alloy chip resistors and thick film resistors, to help everyone better understand the characteristics and application scenarios of these two types of resistors

Alloy resistanceDefinition and principle

1 Alloy chip resistance

Alloy chip resistor, as the name suggests, is a type of chip resistor made of alloy materials. It uses a special production process to press alloy powder into the mold, which is then sintered at high temperature to form a resistance body. Alloy surface mount resistors have the advantages of small size, light weight, and good stability, making them widely used in electronic products

2 Thick film resistor

Thick film resistor, also known as thin film resistor, is a type of resistor made using thin film technology. It is made by coating conductive materials (such as copper foil) on high insulation substrates (such as polyester film), and then hot pressing them to form a resistor body. Thick film resistors have advantages such as smooth surface, precise size, and stable resistance, making them widely used in high-precision and high reliability situations

Alloy resistanceDifference analysis

1 Manufacturing process

The alloy SMT resistor adopts a pressure processing process, which forms a resistor body by pressing the alloy powder into the mold; The thick film resistor adopts a thin film process, which forms a resistor body by coating conductive materials on the substrate and hot pressing. There are significant differences in the manufacturing processes between the two, resulting in their different performance characteristics

2 Performance characteristics

(1) Power characteristics: The power characteristics of alloy patch resistors are more pronounced than those of thick film resistors, making them suitable for high-power application scenarios; The power characteristics of thick film resistors are relatively smooth, making them suitable for low-power application scenarios

(2) Temperature characteristics: The temperature characteristics of alloy chip resistors are relatively poor, and as the temperature increases, their resistance values may undergo significant changes; The temperature characteristics of thick film resistors are good, and as the temperature increases, their resistance changes less

(3) Stability: The stability of alloy surface mount resistors is relatively poor and is easily affected by environmental factors, leading to changes in resistance values; Thick film resistors have good stability and can maintain high resistance stability in harsh environments

Alloy resistanceApplication scenarios

Due to differences in performance characteristics, there are also certain differences in application scenarios between alloy surface mount resistors and thick film resistors. Generally speaking, alloy surface mount resistors are suitable for situations where resistance stability is low and volume and weight requirements are high; Thick film resistors are suitable for situations that require high resistance stability and precision

There are certain differences between alloy surface mount resistors and thick film resistors in terms of manufacturing process, performance characteristics, and application scenarios. Understanding these differences helps us choose suitable resistors in practical applications to meet the needs of various electronic devices