BRIGHT BM

BRIGHT LED ELECTRONICS CORP.
BM-40K57MD
SINCE 1981
●
Features :
1.
4.2 inch (106.20mm) matrix height.
2.
Dot size 10.0mm.
3.
Low power requirement.
4.
Excellent characters appearance.
5.
Solid state reliability.
6.
Multiplex drive , column anode com and
●
Package Dimensions :
row cathode com.
7.
Single color available.
8.
Categorized for luminous intensity.
9.
Stackable vertically and horizontally.
●
1.
Description :
The BM-40K57MD is a 106.20mm(4.2")
matrix height 5×7 dot matrix display.
2.
This product use super yellow chips,
which are made from AlGaInP on
GaAs substrate.
3.
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 have a black face and
white dots.
4.
This product doesn't contain restriction
substance, comply ROHS standard.
●
Internal Circuit Diagram :
Ver.2.0 Page 1 of 3
BRIGHT LED ELECTRONICS CORP.
BM-40K57MD
SINCE 1981
●
Absolute Maximum Ratings(Ta=25℃)
Parameter
Symbol
Rating
Unit
Power Dissipation Per Dot
Pd
160
mW
Forward Current Per Dot
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 Dot
Reverse Voltage Per Dot
●
Electrical And Optical Characteristics(Ta=25℃)
Parameter
Symbol Condition
Min.
Typ.
Max.
Unit
Forward Voltage Per Dot
VF
IF=10mA
-
4.2
5.0
V
Luminous Intensity Per Dot
Iv
IF=10mA
-
35.0
-
mcd
Reverse Current Per Dot
IR
VR=5V
-
-
100
µA
Peak Wave Length
λp
IF=10mA
-
590
-
nm
Dominant Wave Length
λd
IF=10mA
582
592
nm
Spectral Line Half-width
∆λ
IF=10mA
-
-
nm
15
Ver.2.0 Page 2 of 3
BRIGHT LED ELECTRONICS CORP.
BM-40K57MD
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
500
530
560
Fig.2 Forward Current VS.
Forward Voltage
40
30
20
10
0
590
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
650
680
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
620
-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