BRIGHT LED ELECTRONICS CORP. BA-3S12UW SINCE 1981 ● Features : 1. Emitting area : 18.78×5.85（mm） 2. Low power requirement. 3. Excellent characters appearance. 4. Solid state reliability. 5. Categorized for luminous intensity. ● 1. ● Package Dimensions : Description : The BA-3S12UW have uniform emitting light. 2. This product use super red chips, which are made from GaAlAs on GaAs substrate.. 3. This product have a white face and white segments. 4. Notes: 1. All dimensions are in millimeters(inches). 2. Tolerance is ±0.25mm(.01")unless otherwise specified. 3. Specifications are subject to change without notice. This product doesn't contain restriction substance, comply ROHS standard. ● Internal Circuit Diagram : Ver.2.0 Page 1 of 3 BRIGHT LED ELECTRONICS CORP. BA-3S12UW SINCE 1981 ● Absolute Maximum Ratings(Ta=25℃) Parameter Symbol Rating Unit Power Dissipation Per Segment Pd 80 mW Forward Current Per Segment IF 15 mA IFP (Duty 1/10, 1KHZ) 50 mA VR 5 V Operating Temperature Topr -40℃~80℃ - Storage Temperature Tstg -40℃~85℃ - Soldering Temperature (1/16" From Body) Tsol 260℃ For 5 Seconds - Peak Forward Current Per Segment Reverse Voltage Per Segment ● Electrical And Optical Characteristics(Ta=25℃) Parameter Symbol Condition Min. Typ. Max. Unit Forward Voltage Per Segment Vf IF=10mA - 1.7 2.5 V Luminous Intensity Per Segment Iv IF=10mA - 12.0 - mcd Reverse Current Per Segment IR VR=5V - - 100 µA Peak Wave Length λp IF=10mA - 660 - nm Dominant Wave Length λd IF=10mA 638 648 nm Spectral Line Half-width ∆λ IF=10mA - - nm 20 Ver.2.0 Page 2 of 3 BRIGHT LED ELECTRONICS CORP. BA-3S12UW SINCE 1981 Typical Electro-Optical Characteristics Curves (25℃ Ambient Temperature Unless Otherwise Noted) Fig.1 Relative Radiant Intensity VS. Wavelength 0.5 0 540 Forward Current (mA) 50 570 600 Fig.2 Forward Current VS. Forward Voltage 40 30 20 10 0 1 2 3 4 630 Wavelength(nm) Relative Luminous Intensity (@20mA) Relative Radiant Intensity 1.0 5 Fig.4 Relative Luminous Intensity VS. Forward Current 1.5 1.0 0.5 0 10 20 30 40 Forward Current(mA) 3.0 50 690 720 Fig.3 Relative Luminous Intensity VS. Ambient Temperature 2.5 2.0 1.5 1.0 0.5 0 -40 50 Forward Current(mA) 2.0 660 -20 0 20 40 60 Ambient Temperature Ta( C) Forward Voltage (V) Relative Luminous Intensity (@20mA) ● Fig.5 Forward Current Derating Curve VS. Ambient Temperature 40 30 20 10 0 20 40 60 80 100 120 Ambient Temperature Ta( C) Ver.2.0 Page 3 of 3