3157 bulb power LED (A) Electronics and Optical Characteristics: Ta=25◥C PART NO Emitting Color Forward TotalityLuminous Intensity ﹛ Dominant  Color Voltage Efficacy Wavelength  Temperature 3157-S25-1TH3-12VDC (DC) ﹛ ﹛ ﹛ Unit: V Unit: LM Unit:LM/W Unit:nm Unit:K Error margin:±5% W Super White 12 114.38/19.3 73.32 X:0.2807Y:0.2892 9952 Test Condition Power:1.56W             Current:104/36±10%mA   Flip-chip LED is inverted, the electrodes directly on the LED chip in direct contact with the substrate, because a large emitting area, and a better light efficiency, in addition to good heat dissipation, wire-free, etc.