Supply LED light emitting diode F55mm flash red and blue double flash red and blue color from the flash automatically flashes alternately

Supply F5 5mm LED light-emitting diode flash red and blue double flash red and blue color from the flash automatically flashes alternately F5 5mm LED light-emitting diode flash red and blue double flash red and blue color from the flash automatically flashes alternately use LED's of one, because of the design needs to be cited foot or curved legs were bent at the foot of the LED and cut feet, legs bent position and cut the bottom surface of the foot from the colloid more than 3mm; legs should bend before welding; use LED plug lights, PCB board hole spacing and LED pin spacing to correspond; when cut legs cut legs due to the vibration generated by friction high-voltage static, so the machine to be reliable grounding, good anti-static work (can blow ion fan to eliminate static electricity). Second, the welding conditions can not be powered LED welding; do not put any pressure on the LED when heated; maximum welding conditions: hand welding wave soldering a. Iron maximum power:. 50 W a maximum preheat temperature: 100 ℃ b. Highest temperature:. 300 ℃ b dip soldering maximum temperature: 260 ℃ c. Welding maximum time: three seconds c dip soldering maximum time: 5 seconds d. Welding position: from colloidal underside of more than 3mm d dip soldering position: more than 3mm from the bottom surface of colloidal Third, anti-static precautions all contacts LED equipment and instruments must be grounded; all contacts LED staff try wearing an antistatic wrist strap or ESD. gloves; can not pick up the product with bare hands if LED has been static damage, will show some undesirable characteristics, such as leakage current increase, static forward voltage drop or rise in the low current test does not shine or glow is not normal. Fourth, the overcurrent protection for LED series resistor to make it work stable resistance value is calculated as: R = (VCC-VF) / IF VCC supply voltage, VF is LED driving voltage, IF the LED forward current use at ambient temperature between -30 ℃ ~ + 60 ℃