Vishay Intertechnology, Inc. Chassis Mount Resistors RER55F9R09PCSL

The RER55F9R09PCSL 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. The resistor is constructed with complete welded assembly and is available in non-inductive styles, utilizing Ayrton-Perry winding to minimize reactive components. This specific model has a power rating of 30 watts at 25 ¬8C and operates within a resistance range of 1 to 4.99 kOc, with a tolerance of ¬±1%. It is capable of withstanding a maximum working voltage determined by the formula (P x R)^{1/2}. 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. Engineers considering this resistor should note its robust construction and military-grade specifications, which may be critical for applications requiring high reliability and performance.