KW4-281 SERIES
LED Numeric Display
Four Digit (0.28")
DESCRIPTION:
The KW4-281 series is 0.28 inch (7.00mm) height four digit display.
All devices are available as either common anode or common cathode.
PACKAGE DIMENSIONS
10.0
O
4.50
0.80
7.0(0.28")
10.00
+
PIN 1
8.00*3=24.00
32.10
5.80
ABSOLUTE MAXIMUM RATINGS: (Ta=25 C)
Parameter
Max
Reverse Voltage per segment
5V
Reverse Current per segment (Vr = 5V)
100碌A(chǔ)
Derating Linear from 25
o
C per segment
0.4mA/
o
C
Operating Temperature Range
-40
o
C To 85
o
C
Storage Temperature Range
-40
o
C To 100
o
C
Soldering Temperature 1.6mm(1/16") from body for 5 sec. at 260
o
C
NOTES : 1. All dimensions are in millimeters (inches).
2. Tolerance is +0.25mm(0.010) unless otherwise specified.
3. Specifications are subject to change without notice.
4. NP: No Pin.
5. NC: No Connect.
DIG.1
o
蠁0.45
7.62
2.54*5=12.70
DIG.2
D5
D6
D2
DIG.3
F
E
D3
D
DIG.4
A
G
B
C
D4
INTERNAL CIRCUIT DIAGRAM
12
DIG.1
9
DIG.2
8
DIG.3
6
DIG.4
A B C D E F G
A B C D E F G D2 D5 D6 A B C D E F G D3
A B C D E F G D4
11 7 4 2
1 10 5
3
TESTING CONDITION FOR EACH PARAMETER :
Parameter
Forward Voltage
Peak Emission Wave Length
Spectral Line Half-Width
Reverse Current
Average Luminous Intensity
Symbol
Vf
位蟻
鈭單?/div>
Ir
Iv
Unit
V
nm
nm
碌A(chǔ)
碌
cd
Test Condition
If=20mA
If=20mA
If=20mA
Vr=5V
If=10mA
12
DIG.1
9
DIG.2
8
DIG.3
6
DIG.4
A B C D E F G
A B C D E F G D2 D5 D6 A B C D E F G D3
A B C D E F G D4
11 7 4 2
1 10 5
3
PART NO. SELECTION AND APPLICATION INFORMATION (RATINGS AT 25 C AMBIENT)
Chip
Part No.
Raw
Material
GaAsP/GaP
GaAlAs
GaP
GaP
GaAsP/GaP
GaAsP/GaP
GaAlAs
GaP
GaP
GaAsP/GaP
Emitted
Color
Hi-Eff. Red
Super Red
Common
Green
Anode
Super Green
Yellow
Hi-Eff Red
Super Red
Green
Super Green
Yellow
Common
Cathode
570
585
635
660
565
570
585
30
30
45
20
30
30
30
100
100
100
100
100
100
100
50
50
50
50
50
50
50
100
100
100
100
100
100
100
1.7
1.7
1.7
1.5
1.7
1.7
1.7
2.2
1.9
1.9
1.9
2.2
2.2
1.9
2.6 10-20 850
2.6 10-20 600
2.6 10-20 700
1900
1500
1800
565
30
100
50
100
1.7
2.2
2.6 10-20 700
1600
C.C
or
C.A
Wave
Length
位蟻
(nm)
635
660
Absolute Maximum Ratings
鈭單?/div>
Pd
If
Electro-optical Data(at 10mA)
o
If
If
Vf (V)
Iv (碌cd)
(Peak) Per Segment (Rec) Per Segment
(nm) (mW) (mA) (mA) Min. Typ. Max. mA Min. Typ.
45
20
100
100
50
50
100
100
1.7
1.5
1.9
1.9
2.6 10-20 700
1800
KW4-281A3
KW4-281AS
KW4-281A2
KW4-281AG
KW4-281A6
KW4-281C3
KW4-281CS
KW4-281C2
KW4-281CG
KW4-281C6
2.6 10-20 1500 5000
2.6 10-20 1500 5000
2.6 10-20 700
2.6 10-20 850
2.6 10-20 600
1600
1900
1500
REMARKS : 1. The average luminous intensity is obtained by summing the luminous intensity of each segment and dividing by the total number of segments.
2. Luminous intensity is measured with a light sensor and filter combination that approximates the CIE (International Commission on Illumination) eye-response curve.
3. Clean only by pure water, isopropanol, ethanol, Freon TF (or equivalent).
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