Cement resistors, resistors encapsulated in refractory clay, involve winding resistance wire around alkali-free heat-resistant ceramic components, with heat-resistant, moisture-resistant, and corrosion-resistant materials applied externally for reinforcement. The wire-wound resistor body is then placed within a square ceramic frame and secured using special non-combustible heat-resistant cement. Cement resistors are a type of wire-wound resistor. They are high-power resistors capable of handling substantial currents. Their function is similar to that of standard resistors, but they are suitable for high-current applications such as series connection with electric motors to limit starting current. Their positive value is generally not large. Cement resistors feature large dimensions, shock resistance, moisture resistance, heat resistance, excellent heat dissipation, and low cost. They are widely used in power adapters, audio equipment, audio crossovers, instruments, meters, televisions, automobiles, and other devices.

Parameters:
Power Rating: 20 W
Accuracy: 5%
Operating Temperature: -50°C to 150°C
Insulation Resistance: ≥100MΩ
Rated Voltage: 750V
Temperature Coefficient (PPM/°C): 250
Insulation Voltage (DC or AC Peak): 700

Features:
1. Shock-resistant, moisture-resistant, heat-resistant, and excellent heat dissipation.
2. Fully insulated, suitable for printed circuit boards.
3. Superior heat resistance with low resistance temperature coefficient exhibiting linear variation.
4. Withstands short-term overload conditions with low noise emission.
5. Excellent explosion-proof performance providing protective functionality.