What are the advantages and disadvantages of alloy resistors and ordinary resistors

Alloy resistors and ordinary resistors each have their unique advantages and disadvantages, which will be explained separately below:

Advantages and disadvantages of alloy resistors
advantage
High precision: The resistance value of alloy resistors is very stable and can meet very high precision requirements. Its accuracy is usually between ± 0.1% and ± 1%, which is suitable for circuits with high precision requirements.
Strong stability: Alloy resistors have good long-term stability, with a small temperature coefficient, which means that temperature changes have little effect on the resistance value, and can maintain stable resistance values even in high temperature environments.
High power capacity: Alloy resistors can withstand large loads and are suitable for high-power applications.
Corrosion resistance: Alloy resistors are made up of a mixture of multiple metals, which have good corrosion resistance and can work stably for a long time in harsh environments.
Good heat dissipation performance: Some alloy resistors, such as aluminum shell resistors, have a metal shell and better heat dissipation performance than ordinary resistors.
shortcoming
High cost: Due to the use of special materials and manufacturing processes, the cost of alloy resistors is usually higher than that of ordinary resistors.
Size and weight: Compared to some miniaturized ordinary resistors, alloy resistors may have larger size and weight, which may be a disadvantage in some electronic devices with strict space requirements.
Advantages and disadvantages of ordinary resistors
advantage
Low cost: The manufacturing process of ordinary resistors is relatively simple, and the material cost is low, so the price is relatively cheap.
Diverse types: There are various types of ordinary resistors, such as carbon film resistors, metal film resistors, ferrite resistors, etc., which can be selected according to different application needs.
Widely used: Ordinary resistors are one of the most widely used components in circuits, which can be used in various circuits to limit current, change circuit impedance, adjust circuit gain, isolate and protect.
shortcoming
Limited accuracy: Although the manufacturing process of ordinary resistors is becoming increasingly sophisticated, their accuracy is usually lower than that of alloy resistors, which may not meet the requirements of some high-precision circuits.
Poor stability: Compared to alloy resistors, the temperature coefficient of ordinary resistors may be larger, and temperature changes have a more significant impact on their resistance values, which may lead to unstable circuit performance.
General heat dissipation performance: Ordinary resistors lack effective heat dissipation channels and are prone to damage due to overheating, especially when used in high-power and high-temperature environments, special attention should be paid to heat dissipation issues.
In summary, both alloy resistors and ordinary resistors have their own advantages and disadvantages. The choice of resistor depends on specific application requirements and budget. In situations where high precision, high stability, and high power capacity are required, alloy resistors are a better choice; In situations where cost, space, and precision requirements are not high, ordinary resistors are more suitable.