The carbon film resistor symbol looks like a regular resistor. A good signal has arrived for the electronic manufacturing service industry. What is the difference between carbon film resistance and metal film resistance?
Carbon film resistors are resistors that deposit carbon on ceramic rods and are variable resistors. That is to say, it is a method with good resistance stability.
Carbon resistor materials are generally made of ceramic materials. The carbon resistance range is between 01~05W/cm2. The winding resistance ranges from 1 to 50 Ω/cm2, and the material may vary depending on its lifespan, size, and purpose.


Aluminum shell resistors were the earliest resistors to appear. Aluminum shell resistors require long-term stable operation and coordination with other components to ensure more reliable circuit operation.
Aluminum shell resistor: made of aluminum wire composed of three wires and made into three circular wires, with several resistor bodies being circular.
Chip resistor: An ordinary thick film shadowless light plate resistor is a photosensitive material made of aluminum material that transmits light from the surface of the component.
A. All standard names and codes for resistance materials B, C, and D, consisting of the letters R, C, D, H, I, and voltage VA. Resistor material Resistivity material Solid core Resistivity material Domestic resistor standard name and code Customizable product specifications (width and depth): 0201~.
The resistance range of c is 1 Ω~10M Ω (10M Ω, 20M Ω, 50M Ω, 100M Ω).
If you use the above products, your usage and characteristics need to be exactly the same. If using the above product, please use the corresponding connecting cable.
All I/O terminals must minimize the capacitance between Test point, and pay attention to the angle of direction and link angle.
By accurately matching the resistors on the I/O wire frame, too large resistors should not be used, and the resistance deviation should be less than 05%.
To do this, we need to test the components before design, and we can locate them by providing test data.
A The purpose of the test is to achieve the purpose of testing Signal integrity. The test signal passes but does not affect the purpose of the test. It is a high-speed test.