F251R BRUSHLESS DC FANS ■ FEATURES RoHS compliant O Low noise, 11 dB (A) type by the correct application of hydrodynamic design of impeller and frame OLight weight (approx. 7 g) ■ STRUCTURE OFrame and impeller ABS/PBT alloy OBearing 1 sleeve bearing ■ PART NUMBER DESIGNATION F251R - 12 L C Series name Bearing 1 sleeve bearing Power supply 05：DC5 V 12：DC12 V Air flow LL：0.04 m3/min L：0.05 m3/min ■ LIST OF PART NUMBERS Power supply Part number Power supply F251R-05LLC DC5 V Part number F251R-12LLC DC12 V F251R-05LC ※ Verify the above part numbers when placing orders. F251R-12LC F251R BRUSHLESS DC FANS ■ STANDARD SPECIFICATIONS F251R-05LC Item F251R-05LLC F251R-12LC F251R-12LLC Rated voltage DC5 V DC12 V Voltage range 4.2 ~ 5.7 V 10.2 ~ 13.8 V Rated current 0.08 A 0.06 A 0.05 A 0.04 A Rotating speed 8000 min-1 6500 min-1 8000 min-1 6500 min-1 0.05 m3/min 0.04 m3/min 0.05 m3/min 0.04 m3/min 30 Pa 20 Pa 30 Pa 20 Pa 15 dB (A) 11 dB (A) 15 dB (A) 11 dB (A) Air flow Static pressure Noise Use environment –10 ~ +60 °C (35 ~ 85 %RH) Storage environment –20 ~ +70 °C (35 ~ 85 %RH) Approx. 7 g Net weight ※ The specifications above are typical values measured on the conditions of no-loading running with rated voltage in the circumstances of 25 °C ± 2 °C, 35~ 85 %RH. Please contact us if you would liketo check the specifications in different circumstances. ■ AIR FLOW PERFORMANCE CURVES 50 45 Static pressure (Pa) 40 35 30 F251R-XXL 25 20 F251R-XXLL 15 10 5 0 0.02 0.04 0.06 Air flow (m3/min) 10 ± 0.5 Lead wire UL1061/1685 AWG28 Black: GND Dimension of mounting hole for recommendation Red: VOLTAGE 4 – φ 2.8 20 ± 0.5 25 ± 0.5 .6 φ 23 20 ± 0.5 Air flow (Unit: mm) 20 ± 0.5 150 ± 20 ■ OUTLINE DIMENSIONS 4 – φ 2.8 4 – C2 20 ± 0.5