What are the differences between alloy resistors and ordinary resistors

There are significant differences between alloy resistors and ordinary resistors in multiple dimensions. The following is a detailed summary of these differences:

1、 Performance characteristics
Accuracy and stability

Alloy resistance: It has high precision and excellent stability, and can maintain a constant resistance value under various environmental conditions. This high precision and stability make alloy resistors perform well in circuits that require precise control. Ordinary resistors have relatively low accuracy and stability, and are easily affected by external factors such as temperature and humidity, leading to changes in resistance values.
temperature coefficient

Alloy resistance: The temperature coefficient is small, which means that the change in resistance value is small when the temperature changes. This enables the alloy resistance to maintain a stable resistance value even in environments with significant temperature changes. Ordinary resistor: The temperature coefficient is relatively large, and temperature changes have a significant impact on its resistance value. In environments with significant temperature changes, the resistance value of ordinary resistors may undergo significant changes.
Power bearing capacity

Alloy resistors: typically capable of withstanding higher power and suitable for situations that require handling high currents or voltages. This makes alloy resistors perform well in high voltage and high current environments. Ordinary resistors have relatively limited power tolerance and are more suitable for low-power applications. In high voltage and high current environments, ordinary resistors may be damaged due to overheating.
2、 Application scenarios
Alloy resistance

Due to its high precision, stability, low temperature coefficient, and high power, alloy resistors are widely used in industries such as electronics, power, communication, instrumentation, automotive, military, and industrial automation. Especially in circuits that require precise measurement and control, alloy resistors are indispensable components.
Ordinary resistor

It is more commonly used in general electronic devices, household appliances, and other common application scenarios. For example, in simple circuits such as power circuits and signal circuits, ordinary resistors are sufficient to meet the requirements.
3、 Composition materials
Alloy resistance

Using special alloys as resistor materials, these alloys have excellent electrical properties and physical stability. Common alloy materials include manganese copper alloy, iron chromium aluminum alloy, constantan alloy, nickel chromium alloy, etc. These alloy materials can ensure high precision and long-term stability of resistance values.
Ordinary resistor

It is usually made of materials such as carbon film, metal film, or metal wire. These materials have relatively ordinary properties, but their conductivity and stability are relatively poor. Therefore, the accuracy and stability of ordinary resistors are relatively low.
4、 Manufacturing cost and market price
Alloy resistance

The manufacturing process of alloy resistors is relatively complex and requires advanced technology and equipment for processing and testing. Therefore, its manufacturing cost is relatively high. This also leads to the fact that the market price of alloy resistors is usually higher than that of ordinary resistors. However, in situations where high-performance resistors are required, the cost-effectiveness of alloy resistors is often higher.
Ordinary resistor

The manufacturing cost of ordinary resistors is relatively low, making them suitable for large-scale production and application. Therefore, its market price is relatively low. This has made ordinary resistors widely used in general electronic devices and household appliances.
In summary, there are significant differences between alloy resistors and ordinary resistors in terms of performance characteristics, application scenarios, constituent materials, manufacturing costs, and market prices. These differences enable them to play their unique roles in different application scenarios.