KW4-251 SERIES
LED Numeric Display
Four Digit (0.25")
DESCRIPTION:
The KW4-251 series is 0.25 inch (6.20mm) height four digit display.
All devices are available as either common anode or common cathode.
PACKAGE DIMENSIONS
10.0
O
3.50
0.80
6.2(0.25")
+
PIN 1
6.00
6.00
36.00
6.00
5.10
11.00
ABSOLUTE MAXIMUM RATINGS: (Ta=25 C)
Parameter
Max
Reverse Voltage per segment
5V
Reverse Current per segment (Vr = 5V)
100µA
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.
2.54 x 11 = 27.94
DIG.1
D1
D2
D3
D5
DIG.2
D4
DIG.3
F
E
D6
D
DIG.4
A
G
D7
B
C
L
D8
o
φ0.50
8.40
INTERNAL CIRCUIT DIAGRAM
24
3
DIG.1
5
DIG.2
17 18
8
DIG.3
16
10
DIG.4
13
D1 D2 D3 A B C D E F G A B C D E F G D4 D5 A B C D E F G D6 A B C D E F G D7 L D8
23 2 1 15 19 11 4 21 20 22
7 6
5
17 18
DIG.2
8
DIG.3
9
16
10
DIG.4
14
13
12
TESTING CONDITION FOR EACH PARAMETER :
Parameter
Forward Voltage
Peak Emission Wave Length
Spectral Line Half-Width
Reverse Current
Average Luminous Intensity
Symbol
Vf
λρ
∆λ
Ir
Iv
Unit
V
nm
nm
µA
µ
cd
Test Condition
If=20mA
If=20mA
If=20mA
Vr=5V
If=10mA
24
3
DIG.1
D1 D2 D3 A B C D E F G A B C D E F G D4 D5 A B C D E F G D6 A B C D E F G D7 L D8
23 2 1 15 19 11 4 21 20 22
7 6
9
14
12
PART NO. SELECTION AND APPLICATION INFORMATION (RATINGS AT 25 C AMBIENT)
Chip
Part No.
Raw
Material
GaP
GaAsP/GaP
GaAlAs
GaP
GaP
GaAsP/GaP
GaP
GaAsP/GaP
GaAlAs
GaP
GaP
GaAsP/GaP
Emitted
Color
Bright Red
Hi-Eff. Red
Super Red
Green
Super Green
Yellow
Bright Red
Hi-Eff Red
Super Red
Green
Super Green
Yellow
Common
Cathode
Common
Anode
C.C
or
C.A
Wave
Length
λρ
(nm)
700
635
660
565
570
585
700
635
660
565
570
585
Absolute Maximum Ratings
∆λ
Pd
If
Electro-optical Data(at 10mA)
o
If
If
Vf (V)
Iv (µcd)
(Peak) Per Segment (Rec) Per Segment
(nm) (mW) (mA) (mA) Min. Typ. Max. mA Min. Typ.
90
45
20
30
30
30
90
45
20
30
30
30
100
100
100
100
100
100
100
100
100
100
100
100
50
50
50
50
50
50
50
50
50
50
50
50
100
100
100
100
100
100
100
100
100
100
100
100
1.7
1.7
1.5
1.7
1.7
1.7
1.7
1.7
1.5
1.7
1.7
1.7
2.4
1.9
1.9
2.2
2.2
1.9
2.4
1.9
1.9
2.2
2.2
1.9
2.8 10-20 300
2.6 10-20 700
550
1800
KW4-251A5
KW4-251A3
KW4-251AS
KW4-251A2
KW4-251AG
KW4-251A6
KW4-251C5
KW4-251C3
KW4-251CS
KW4-251C2
KW4-251CG
KW4-251C6
2.6 10-20 1500 5000
2.6 10-20 700
2.6 10-20 850
2.6 10-20 600
2.8 10-20 300
2.6 10-20 700
1600
1900
1500
550
1800
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).
Microcontroller MCU
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