White copper foil: a multifunctional material

1、 Advantages of high resistivity

　　White copper foilAs an impedance material, its most prominent feature is its high electrical resistivity. Compared to other alloy metals, white copper has a higher electrical resistivity of 0.48 μ Ω· m. This means that when current passes through white copper foil, it can generate greater resistance compared to other materials. This is particularly important for many electronic devices such as resistors and ammeters.

For example, suppose there are two materials A and B with identical shapes and sizes, but material A is white copper foil and material B is another common alloy metal. When the same current passes through A and B, due to the higher resistivity of white copper foil than material B, it will cause greater resistance, resulting in higher voltage. In some situations where precise measurement of current or control voltage is required, using white copper foil can provide more accurate data and improve the stability and performance of electronic devices.

2、 Adapt to a wide temperature range

In addition to high resistivity, white copper foil also has a low temperature coefficient of resistivity and moderate resistivity, allowing it to be used over a wide temperature range. This is particularly important in environments with significant temperature changes. For example, white copper foil can work under high temperature conditions without causing significant changes in resistance due to temperature rise.

For example, some electronic devices may require long-term operation in high-temperature environments, such as high-temperature resistors or thermocouples. If other materials are used, their electrical resistivity may vary greatly with temperature, which may lead to unstable or even malfunctioning electronic devices. Due to its small temperature coefficient of electrical resistivity, white copper foil can maintain a stable resistance value in high temperature environments, ensuring the normal operation of electronic devices.

3、 Excellent processing and welding performance

In addition to the two advantages mentioned above,White copper foilIt also has good processing and welding performance. This has led to its widespread application in many fields.

In terms of processing performance, white copper foil has good plasticity and malleability, and can be made into various shapes of thin plates or wires through processing techniques such as cold rolling and hot rolling. This enables white copper foil to meet the material shape and size requirements of different fields and devices. At the same time, the surface of the white copper foil is silver white, beautiful and generous, suitable for use in certain decorative or appearance demanding products.

In terms of welding performance, white copper foil has excellent welding performance and can be well connected with other materials. This allows white copper foil to be used to manufacture some complex circuits and electronic components, such as precision resistors, sliding resistors, etc. At the same time, white copper foil can also be used to produce thermocouple and thermocouple compensation wire materials, and its good welding performance can ensure a firm and stable connection.

4、 Excellent corrosion resistance performance

In addition to the above advantages, white copper foil also has excellent corrosion resistance and can work stably for a long time in harsh working environments. This is particularly important for equipment that requires frequent contact with substances such as water, moisture, acidity, and alkalinity.

For example, certain electronic devices may need to be used in marine, chemical, and other environments. Due to factors such as salt content in seawater and the corrosiveness of chemical substances, many materials are susceptible to corrosion, which can affect the normal operation of equipment. However, due to its excellent corrosion resistance, white copper foil can maintain high stability in these harsh environments, thereby extending the service life of equipment.

in summary,White copper foilAs an alloy metal with high electrical resistivity, it has broad application prospects in the field of electronic device manufacturing. Its high resistivity, wide temperature range adaptability, excellent processing and welding performance, and outstanding corrosion resistance make it an indispensable material in many fields. White copper foil plays an important role in electronic device manufacturing, precision instrument manufacturing, and other fields that require high-performance materials.