Vishay Intertechnology, Inc. Chassis Mount Resistors RER40F75R0RC02

The RER40F75R0RC02 is a chassis mount wirewound resistor designed for military applications, 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 model has a power rating of 5 watts at 25 ¬8C and operates within a resistance range of 75 ohms 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 under challenging conditions.