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BM
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Ver.2.0 Page 1 of 3
SINCE 1981
● Package Dimensions :
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.
● Features :
1. 1.9 inch (47.7mm) matrix height.
2. Dot size 5.00mm.
3. Low power requirement.
4. Excellent characters appearance.
5. Solid state reliability.
6. Multiplex drive , column anode com.
and row cathode com.
7. Single color available.
8. Categorized for luminous intensity.
9. Stackable vertically and horizontally.
● Description :
1. The BM-12488MD is a 47.7mm(1.9")
matrix height 8×8 dot matrix display.
2. This product use hi-eff red chips, which
are made from GaAsP on GaP substrate.
3. This product have a black face and
white dots.
4. This product doesn't contain restriction
substance, comply ROHS standard.
● Internal Circuit Diagram :
佰鴻工業股份有限公司
http://www.brtled.com
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Ver.2.0 Page 2 of 3
SINCE 1981
● Absolute Maximum Ratings(Ta=25℃)
Parameter Symbol Rating Unit
Power Dissipation Per Dot Pd 80 mW
Forward Current Per Dot IF 30 mA
Peak Forward Current Per Dot IFP
(Duty 1/10, 1KHZ) 150 mA
Reverse Voltage Per Dot VR 5 V
Operating Temperature Topr -40℃~80℃ -
Storage Temperature Tstg -40℃~85℃ -
Soldering Temperature
(1/16" From Body) Tsol 260℃ For 5 Seconds -
● Electrical And Optical Characteristics(Ta=25℃)
Parameter Symbol Condition Min. Typ. Max. Unit
Forward Voltage Per Dot VF I
F=10mA - 1.9 2.5 V
Luminous Intensity Per Dot Iv IF=10mA - 9.0 - mcd
Reverse Current Per Dot IR VR=5V - - 100
µA
Peak Wave Length λp IF=10mA - 640 - nm
Dominant Wave Length λd IF=10mA 626 - 636 nm
Spectral Line Half-width ∆λ IF=10mA - 40 - nm
佰鴻工業股份有限公司
http://www.brtled.com
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Ver.2.0 Page 3 of 3
SINCE 1981
● Typical Electro-Optical Characteristics Curves
(25℃ Ambient Temperature Unless Otherwise Noted)
Fig.1 Relative Radiant Intensity VS. Wavelength
Wavelength(nm)
Forward Voltage
Fig.4 Relative Luminous
Forward Current(mA)
Forward Voltage (V)
Relative Luminous Intensity
0.0
0
(@20mA)
1.0
2.0
Forward Current (mA)
3.0
0
0
30
10
20
40
50
4010 20 30 50
Forward Current
4
Intensity VS.
123 5
Fig.2 Forward Current VS.
Relative Radiant Intensity
560
0
0.5
1.0
590 620
Ambient Temperature
Ambient Temperature
Derating Curve VS.
Fig.5 Forward Current
Ambient Temperature Ta( C)
Ambient Temperature Ta( C)
0
0
20
Forward Current(mA)
10
30
40
806020 40
Relative Luminous Intensity
(@20mA)
0.5
50
-40
0
1.5
1.0
3.0
2.5
2.0
0-20 20
120100
40 60
Fig.3 Relative Luminous
650 680
Intensity VS.
710 740
佰鴻工業股份有限公司
http://www.brtled.com
