Which is more durable, metal film resistor or metal foil resistor?

According to the search results, the durability characteristics of metal film resistors and metal foil resistors are as follows:

1. Durability of metal foil resistors:
Metal foil resistors have excellent long-term stability, with minimal changes in resistance values under prolonged use or harsh environmental conditions. This long-term stability is particularly important for systems that require high precision for extended periods of time, such as aerospace, medical equipment, and high-end testing instruments.
The load life of metal foil resistors is extremely long, and under long-term high load conditions, the drift of resistance values can be almost negligible. This makes it perform excellently in application scenarios that require extremely high reliability, such as industrial automation equipment and communication base stations.
Due to its superior material properties and packaging process, metal foil resistors have excellent moisture resistance, and even in high humidity environments, the resistance value will not undergo significant changes.

2. Durability of metal film resistors:
Metal film resistors use metal thin films as resistance materials, which have lower temperature coefficients and higher stability. Due to its high precision and durability, metal film resistors are commonly used in high-precision instruments, measuring equipment, and high-frequency circuits.
Metal film resistors can operate stably within a wide temperature range of -55 ℃ to+155 ℃, ensuring reliability and durability in various practical applications.

In summary, both metal foil resistors and metal film resistors have good durability, but they differ in certain aspects. Metal foil resistors perform better in long-term stability, load life, and moisture resistance, while metal film resistors have more advantages in temperature stability and high-frequency applications. According to different application requirements and environmental conditions, a more suitable type of resistor can be selected to ensure the stability and durability of the circuit.