Heat Resistance Cement Wire Wound Resistors for Voltage Regulation
1. Compact dimensions with excellent stability in high-temperature environments, resistant to humidity and shock
2. Fully insulated design ideal for printed circuit board applications
3. Exceptional heat dissipation with minimal linear temperature coefficient
4. Instant overload capability with low noise figures and minimal annual resistance value drift
Product Overview
Cement resistors are robust, high-temperature resistant, and moisture-resistant high-power resistors widely used in various electronic circuits for current limiting, voltage division, load applications, and protection.
This series of resistors features a compact design, excellent heat dissipation, and power handling capabilities, while its small size makes it particularly suitable for high-temperature, high-humidity, and high-impact environments.
Internally, they utilize alloy resistance wire or metal oxide film elements, exhibiting extremely low temperature coefficients and noise characteristics, maintaining stable linear resistance under long-term high-temperature loads.
With their outstanding shock resistance, high-temperature resistance, and long-term reliability, cement resistors are indispensable key components in industrial power supplies, motor drives, lighting controls, and consumer electronics.
Technical Specifications
| Item |
Parameter Description |
| Product Name |
Cement Resistors |
| Rated Power |
1W～40W (Customizable) |
| Resistance Accuracy |
±1%, ±5% |
| Insulation Withstand Voltage |
1000V AC / 1 minute |
| Housing Material |
High thermal conductivity and heat-resistant cement encapsulation (flame-retardant) |
| Mounting Method |
PCB through-hole or screw mounting |
Key Features & Advantages
Fully Insulated Construction
The housing uses an insulating cement encapsulation structure, effectively preventing arc discharge and short circuits, suitable for printed circuit board applications with high safety requirements.
Superior Heat Dissipation and Power Load Capacity
High thermal conductivity cement material combined with alloy winding structure ensures rapid heat dissipation and low temperature rise performance, allowing for prolonged operation under high power loads.
Strong Resistance to Humidity and Shock
Tested for humidity, vibration, and shock, it possesses excellent resistance to mechanical stress, ensuring long-term reliability in harsh environments.
Chemical Resistance
The outer shell coating effectively resists chemical solvents and acidic/alkaline gases, extending product lifespan.
