DC Brushless Axial Flow Fan (273-0243A) Specifications Faxback Doc. # 31954 Life Expectancy at 25 degrees C and 65% Relative Humidity:.....40,000 hours NOTE: Life is defined as the time in which the motor speed (fan's RPM) is decreased more than 30% against the initial speed (standard RPM). Specifications are typical; individual units might vary. Specifications are subject to change without notice. (IR-03/21/96)