Monacor LSR-39/20 | 3,9 Ω | 20 W | 5%

The Monacor LSR-39/20 is a high-power cement resistor engineered to deliver exceptional stability and heat dissipation in demanding electronic circuits. With a resistance value of 3.9 Ω and a robust 20-watt power rating, this component is ideally suited for applications where conventional resistors would struggle under sustained electrical loads. Its cement construction ensures reliable performance even in high-temperature environments, making it a trusted choice for professionals and hobbyists alike.

This resistor excels in a variety of use cases, particularly within audio amplification systems, power supply units, and industrial control circuits. It is commonly employed as a load resistor, current limiter, or snubber component in speaker crossovers and amplifier output stages, where its ability to handle transient surges and continuous power dissipation is critical. The ±5% tolerance provides sufficient accuracy for most power-handling applications without compromising cost-effectiveness.

Technically, the LSR-39/20 features a cement-coated ceramic core that offers excellent thermal conductivity and electrical insulation. Its non-inductive design minimises signal distortion in high-frequency audio paths, while the robust lead wires ensure secure soldering and long-term mechanical stability. The resistor’s compact footprint allows for straightforward integration into crowded circuit boards or chassis-mounted assemblies.

For engineers seeking a dependable, high-wattage resistor that maintains performance under thermal stress, the Monacor LSR-39/20 delivers a practical and durable solution. Its combination of power rating, resistance accuracy, and construction quality makes it a valuable addition to any serious electronics workshop.