DC cooling fan General Specification Electric Strength: 5mA msx at 1500VAC for 1 min between lead wire and frame Insulation Resistance: 10M ohm between lead wire and frame(DC 500V) Life Expectancy(Ball bearing): 50000hrs min at 40 degree C/L10 relative humidity 65%+/-20% Life Expectancy(Hypro bearing): >40000hrs min at 40 degree C/L10 relative humidity 65%+/-20% Life Expectancy(Fluid Dynamic bearing): >60000hrs min at 40 degree C/L10 relative humidity 65%+/-20% Operation Temperature: -10~75 degree C(+14~167 degree F),normal; -10~90 degree C(+14~194 degree F), specification Storage Temperature: -40~75 degree C(-40~167 degree F) Protection: Motor protection and polarity protection Lead wire: UL1571 AWG28,30; UL1007 AWG24,26; UL1061 AWG26 Plastic Material: Black PBT (UL94V-0) glass fiber ADDA AD1504 series DC fan detailed specification: 1. frame size(mm): 15X15X04 2. bearing system type: hypro bearing 3. rated voltage:2.5V 4. rated speed: 23000RPM 5. maxiam air flow: 0.32CFM 6. maxiam pressure: 5.08mmAq 7. maxiam noise: 30dBA 8. safety approvals: CE,TUV, UL,cUL