The RK73H2HTTE49R9F is a chip resistor - surface mount from KOA Speer Electronics. It is an AEC-Q200 automotive grade, moisture-resistant resistor with a tolerance of ±1% and a temperature coefficient of ±100ppm/°C. It has a power rating of 0.75W and a resistance of 49.9 ohms. The package is tape and reel, with a standard package of 4,000. The dimensions are 0.197" L x 0.098" W (5.00mm x 2.50mm) with a height of 0.028" (0.70mm). The RK73H2HTTE49R9F is made of thick film composition and has two terminations. It is rated for a temperature range of -55°C to 155°C and is REACH unaffected. This resistor is commonly used in automotive and other high-temperature applications.