Cement resistance is a kind of resistance wire wound on the non-alkali heat-resistant porcelain parts, which is protected and fixed by heat-resistant, moisture-resistant and corrosion-resistant materials. The wound resistance body is put into the square porcelain frame and sealed with special non-combustible heat-resistant cement. The outer surface of cement resistance is mainly ceramic material.

Cement resistor, is to use cement (actually is not cement but refractory mortar, which is commonly known as) potting resistor, the resistance wire wound on the alkali heat-resistant porcelain, outside with heat resistant, resistant to moisture and corrosion resistant material to protect the fixed, and the winding resistance into the square porcelain box body, no flame cement filling with a special seal. There are two types of cement resistors: ordinary cement resistors and cement winding resistors. The cement resistor is shown in figure. Cement resistor is a type of wire-wound resistor, which is a high-power resistor that allows a large current to pass through. Its function is the same as the general resistance, but can be used in high-current occasions, such as in series with the motor, limit the starting current of the motor, the resistance value is generally not large. Cement resistor has small volume, shock resistance, moisture resistance, heat resistance and good heat dissipation, low price and other characteristics, widely used in power adapter, audio equipment, audio frequency divider, instruments, instruments, television, automobile and other equipment.

1, shock resistance, moisture resistance, heat resistance and good heat dissipation, low price and other characteristics.

2, complete insulation, suitable for printed circuit board.

3. Wire the porcelain bar and then weld the joint to produce accurate resistance value and extend the service life.

4. High resistance value is made by metal oxide film body (MO) instead of winding.

5, excellent heat resistance, low resistance temperature coefficient, linear change.

6. Short time overload resistance, low noise, no change in resistance value over the years.

7, good explosion-proof performance, play a protective role.

Cement resistance is usually used in high-power, high-current occasions, there are 2W, 3W, 5W, 10W or more power, such as air conditioning, television, and other power in the 100-watt level and above electrical appliances, basically will use cement resistance.

The shortcoming of cement resistance lies in its large volume, high calorific value when used, not easy to emit, precision often cannot meet the requirements of use, stability and so on. For high power, small volume resistance, or high precision, fast heat dissipation, cement resistance can be replaced by JEPSUN power resistance, 3W,20W,30W,50W,100W, or above power can be achieved, using to-220, to-247 packaging, high accuracy, strong stability, fast heat dissipation