Vishay Intertechnology, Inc. Chassis Mount Resistors RER70FR237RCSL

The RER70FR237RCSL is a chassis mount wirewound resistor from Lingto Electronic Limited, designed for military applications and qualified to MIL-PRF-39009 standards. It features an aluminum heat sink housing and a molded construction that provides total environmental protection. This resistor is non-inductive, utilizing Ayrton-Perry winding to minimize reactive components, and is capable of mounting directly onto a chassis to leverage the heat-sink effect. With a power rating of 20 watts at 25 ¬8C, it has a resistance value of 0.237 ohms and a tolerance of ¬±1%. The operating temperature range is from -55 ¬8C to +250 ¬8C, ensuring reliability in extreme conditions. The resistor also meets stringent performance criteria, including low temperature operation, short time overload, and moisture resistance, making it suitable for demanding applications. The construction materials include a copper-nickel or nickel-chrome alloy element, ceramic or steatite core, and aluminum housing with hard anodic coating.