KW4-251 SERIES
LED Numeric Display
Four Digit (0.25")
DESCRIPTION:
PACKAGE DIMENSIONS
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.
10.0O
+
6.00
6.00
6.00
PIN 1
36.00
φ0.50
ABSOLUTE MAXIMUM RATINGS: (Ta=25oC)
8.40
2.54 x 11 = 27.94
DIG.2 DIG.3
Parameter
Max
5 V
DIG.1
DIG.4
A
Reverse Voltage per segment
Reverse Current per segment (Vr = 5V)
Derating Linear from 25oC per segment
Operating Temperature Range
Storage Temperature Range
D7
L
D1
D2
D3
100µA
D4
G
F
B
0.4mA/ oC
-40oC To 85oC
-40oC To 100oC
E
C
D8
D5
D6
D
INTERNAL CIRCUIT DIAGRAM
Soldering Temperature 1.6mm(1/16") from body for 5 sec. at 260oC
5
17 18
16
24
3
8
10
13
DIG.1
DIG.2
DIG.3
DIG.4
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.
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
5. NC: No Connect.
23
2
1
15 19 11
4
21 20 22
DIG.1
7
6
9
14
12
TESTING CONDITION FOR EACH PARAMETER :
5
17 18
16
24
3
8
10
13
DIG.2
DIG.3
DIG.4
Parameter
Forward Voltage
Symbol
Unit
V
Test Condition
If=20mA
If=20mA
If=20mA
Vr=5V
Vf
λρ
∆λ
Ir
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
Peak Emission Wave Length
Spectral Line Half-Width
Reverse Current
nm
nm
µA
23
2
1
15 19 11
4
21 20 22
7
6
9
14
12
Average Luminous Intensity
Iv
µ cd
If=10mA
PART NO. SELECTION AND APPLICATION INFORMATION (RATINGS AT 25oC AMBIENT)
Electro-optical Data(at 10mA)
Chip
Absolute Maximum Ratings
Wave
Length
λρ (nm)
C.C
or
∆λ
Pd
If
If
(Peak) Per Segment (Rec) Per Segment
(nm) (mW) (mA) (mA) mA
Vf (V)
If
Iv (µcd)
Part No.
Raw
Material
Emitted
Color
C.A
Min. Typ.
Min. Typ. Max.
KW4-251A5
KW4-251A3
KW4-251AS
KW4-251A2
KW4-251AG
KW4-251A6
KW4-251C5
KW4-251C3
KW4-251CS
KW4-251C2
KW4-251CG
KW4-251C6
GaP
Bright Red
Hi-Eff. Red
Super Red
Green
700
635
660
565
570
585
700
635
660
565
570
585
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 1.7 2.4 2.8 10-20 300 550
GaAsP/GaP
GaAlAs
GaP
100 1.7 1.9 2.6 10-20 700 1800
100 1.5 1.9 2.6 10-20 1500 5000
100 1.7 2.2 2.6 10-20 700 1600
100 1.7 2.2 2.6 10-20 850 1900
100 1.7 1.9 2.6 10-20 600 1500
Common
Anode
GaP
Super Green
Yellow
GaAsP/GaP
GaP
Bright Red
Hi-Eff Red
Super Red
Green
100 1.7 2.4 2.8 10-20 300
550
GaAsP/GaP
GaAlAs
GaP
100 1.7 1.9 2.6 10-20 700 1800
100 1.5 1.9 2.6 10-20 1500 5000
100 1.7 2.2 2.6 10-20 700 1600
100 1.7 2.2 2.6 10-20 850 1900
100 1.7 1.9 2.6 10-20 600 1500
Common
Cathode
GaP
Super Green
Yellow
GaAsP/GaP
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).