LIGITEK ELECTRONICS CO.,LTD. Property of Ligitek Only RECTANGLE TYPE LED LAMPS LI25820 DATA SHEET DOC. NO : QW0905- LI25820 REV. : A DATE : 10 - Jan - 2005 LIGITEK ELECTRONICS CO.,LTD. Property of Ligitek Only Page 1/4 PART NO. LI25820 Package Dimensions 5.0 2.8 8.0 1.5MAX 12.5MIN □0.5 TYP 2.3TYP 1.0MIN + - Note : 1.All dimension are in millimeter tolerance is ±0.25mm unless otherwise noted. 2.Specifications are subject to change without notice. Directivity Radiation 0° -30° 30° 60° -60° 100% 75% 50% 25% 0 25% 50% 75% 100% LIGITEK ELECTRONICS CO.,LTD. Property of Ligitek Only PART NO. LI25820 Page3/4 Typical Electro-Optical Characteristics Curve E CHIP Fig.2 Relative Intensity vs. Forward Current Fig.1 Forward current vs. Forward Voltage 3.0 Relative Intensity Normalize @20mA Forward Current(mA) 1000 100 10 1.0 0.1 2.5 2.0 1.5 1.0 0.5 0.0 2.0 1.0 3.0 4.0 5.0 1.0 10 Fig.3 Forward Voltage vs. Temperature Fig.4 Relative Intensity vs. Temperature 1.2 3.0 Relative Intensity@20mA Normalize @25 ℃ Forward Voltage@20mA Normalize @25 ℃ 1000 Forward Current(mA) Forward Voltage(V) 1.1 1.0 0.9 0.8 -40 -20 0 20 40 60 80 100 Fig.5 Relative Intensity vs. Wavelength 1.0 0.5 0.0 550 600 650 700 Wavelength (nm) 2.5 2.0 1.5 1.0 0.5 0.0 -40 -20 0 20 40 60 80 Ambient Temperature(℃) Ambient Temperature( ℃) Relative Intensity@20mA 100 750 100