Vishay Intertechnology, Inc. Chassis Mount Resistors RER65FR221RCSL

The RER65FR221RCSL 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 has a power rating of 10 watts at 25 °C and a resistance value of 0.221 ohms with a tolerance of ±1%. The resistor is constructed with a complete welded design and is available in non-inductive styles, utilizing Ayrton-Perry winding to minimize reactive components. It operates effectively within a temperature range of -55 °C to +250 °C and has a maximum working voltage determined by the formula (P x R)^{1/2}. The insulation resistance is rated at a minimum of 10,000 MΩ when dry. This component is suitable for applications requiring high reliability and performance under extreme conditions, making it a viable option for engineers seeking robust resistive solutions.