BRIGHT LED ELECTRONICS CORP. BS-A28DRD-A SINCE 1981 ● 0.28 inch (7.00mm) Digit Height. 2. Continuous uniform segments. 3. Low power requirement. 4. Excellent characters appearance. 4.00(.157) 2.54x3=7.62(.300) 1. Package Dimensions : 9.90(.390) Features : 7.10(.280) ● + 5. Solid state reliability. 6. Categorized for luminous intensity. 7. Direct drive common anode. 0.30(.012) PIN 1. 0.50(.020) ● 1. Description : The BS-A28DRD-A is a 7.00mm (0.28") 1.27x4=5.08(.200) 6.10(.240) 3.9±0.5(.154±020) 8.20(.323) Notes: 1. All dimensions are in millimeters(inches). 2. Tolerance is ±0.25mm(.01")unless otherwise This product use super red chips, which specified. are made from GaAlAs on GaAs substrate 3. Specifications are subject to change without This product have a black face and white notice. high single digit seven segments display. 2. 3. segments. 4. ● This product doesn't contain restriction substance, comply ROHS standard. Internal Circuit Diagram : 8 10 F E PIN NO. 1 A 7 9 G 2 D 4 3,8 6 B A C B C D E F G DP DP 3 5 7 6 4 2 1 10 9 5 Ver.1.0 Page 1 of 3 BRIGHT LED ELECTRONICS CORP. BS-A28DRD-A SINCE 1981 ● Absolute Maximum Ratings(Ta=25℃) Parameter Symbol Rating Unit Power Dissipation Per Segment Pd 80 mW Forward Current Per Segment IF 30 mA IFP (Duty 1/10, 1KHZ) 150 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 - 6.0 - 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 - 20 - nm Ver.1.0 Page 2 of 3 BRIGHT LED ELECTRONICS CORP. BS-A28DRD-A SINCE 1981 Typical Electro-Optical Characteristics Curves (25℃ Ambient Temperature Unless Otherwise Noted) Fig.1 Relative Radiant Intensity VS. Wavelength Relative Radiant Intensity 1.0 0.5 0 570 600 630 Fig.2 Forward Current VS. Forward Voltage 40 30 20 10 0 660 Wavelength(nm) Relative Luminous Intensity (@20mA) Forward Current (mA) 50 1 2 3 4 5 Fig.4 Relative Luminous Intensity VS. Forward Current 2.0 1.0 0.0 10 20 30 40 Forward Current(mA) 3.0 50 720 750 Fig.3 Relative Luminous Intensity VS. Ambient Temperature 2.5 2.0 1.5 1.0 0.5 0 -40 50 Forward Current(mA) 3.0 690 -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.1.0 Page 3 of 3