SEOUL SAW8KG08

Z-Power LED
X10490
Technical
Data
Sheet
Application Note:
SAW8KG0B
Circuit Design for SAW8KG0B
Description
This surface-mount LED comes
in standard package dimension.
It has a substrate made up of a
molded plastic reflector sitting on
top of a bent lead frame. The die
is attached within the reflector
Cavity and the cavity is encapsulated
by silicone.
Features
•
•
•
•
White colored SMT package.
Pb-free RefloW Soldering
Suitable for all SMT
Lead Free and RoHS
compliant
The package design coupled with careful
selection of component materials allow these
products to perform with high reliability.
Applications
• Interior lighting
• General lighting
• Indoor and out door
displays
• Architectural /
Decorative lighting
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Z-Power LED
X10490
Technical
Data
Sheet
Contents
1. SAW8KG0B Information
1.1 Description -----------------------------------------------------------------------3
1.2 Mechanical Dimension ----------------------------------------------------------3
1.3 Characteristics -------------------------------------------------------------------4
2. Driver Configurations
2.1 Description -----------------------------------------------------------------------5
2.2 Linear Circuits --------------------------------------------------------------------5
2.3 Capacitive Circuits ---------------------------------------------------------------7
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Z-Power LED
X10490
Technical
Data
Sheet
1. SAW8KG0B Information
1.1 Description
The SAW8KG0B emitter is designed to operate of rectified high voltage AC. The SAW8KG0B
contains a high brightness, high voltage LED chip array and connects the LED chip to the anode
and cathode of the package. Each SAW8KG0B emitter contains a zener diode to provide ESD
protection.
ESD
Cathode
Anode
Protection
Device
1
2
Figure 1. SAW8KG0B (left) and Circuit Diagram
1.2 Mechanical Dimensions
Package
Marking
Slug (Anode)
C
A
C
A
( Tolerance:
±0.1,
Unit: mm )
Figure 2. SAW8KG0B mechanical dimensions(mm)
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Z-Power LED
X10490
Technical
Data
Sheet
1. SAW8KG0B Information
1.3 Characteristics
Parameter
Symbol
Condition
Min.
Typ.
Max.
Unit
Forward Voltage*
VF
IF=20mA
20.7
22
23
V
Reverse Voltage
VR
IR=10mA
0.7
-
-
V
Iv
IF=20mA
-
13.8
(42.8)
-
Luminous Intensity*[1]
(3700~7000K)
Luminous Intensity*[1]
(2600~3700K)
Iv
IF=20mA
10.9
CCT
IF=20mA
2,600
-
7,000
K
2Θ1/2
IF=20mA
-
115
-
deg.
Ra
IF=20mA
80
82
90
-
1.5kΩ;100
pF
5
-
-
KV
IF=20mA
-
27
-
K/W
Color Correlated
Temperature
Viewing Angle
[2]
Color Rendering
Index*
ESD (HBM)
Thermal resistance
[3]
cd
(lm)
12.2
(37.8)
RthJS
[1] The luminous intensity IV was measured at the peak of the spatial pattern which may not be aligned
with the mechanical axis of the LED package.
[2] 2Θ1/2 is the off-axis where the luminous intensity is 1/2 of the peak intensity.
[3] Thermal resistance: RthJS (Junction / solder)
* Tolerance : VF :± 0.4V, IV :± 7%, Ra :± 2, x,y :± 0.01
[Note] All measurements were made under the standardized environment of SSC.
Absolute Maximum Ratings
Parameter
Symbol
Value
Unit
Power Dissipation *[1]
Pd
0.58
W
Forward Current
IF
25
mA
Operating Temperature
Topr
-30~+85
℃
Storage Temperature
Tstg
-40~+100
Junction Temperature
Tj
125
℃
℃
[1] Care is to be taken that power dissipation does not exceed the absolute maximum rating of the product.
* LED’s properties might be different from suggested values like above and below tables if operation condition
will be exceeded our parameter range.
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Z-Power LED
X10490
Technical
Data
Sheet
2. Driver Configurations
2.1 Description
The SAW8KG0B emitter is designed to operate directly off of AC line power(e.g 120Vac, 230Vac)
with a rectifier, linear circuits or capacitive circuits or switching circuits.
2.2 Linear Circuit
A) Resistor Driving Circuit
It is better to use higher than rated power resistors for reliability. The rated power of the resistor
should be chosen based on the equation Irms(A)*Irms(A)*Resistor value(ohms). The normal
power rating of a 3216 size resistor is 0.25W. If the power consumption in one resistor exceeds
the rated power of the resistor it is suggested to use multiple resistors in parallel.
(a) Series configuration
(b) Parallel configuration
Figure 3. Resistor driving circuit for 100~120Vac
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Z-Power LED
X10490
Technical
Data
Sheet
Table 1. Resistor values in Figure 3-(a)
Target
Drive
Current
VF bins
Input
Voltage
Power
dissipation
LED#
100 Vac
2W
5ea
20 mA,rms
630
Ω
480
Ω
330
Ω
110 Vac
2W
5ea
20 mA,rms
1060
Ω
910
Ω
760
Ω
120 Vac
2W
5ea
20 mA,rms
1510
Ω
1360
Ω
1210
Ω
A
B
C
Table 2. Resistor values in Figure 3-(b)
Target
Drive
Current
VF bins
Input
Voltage
Power
dissipation
LED#
100 Vac
4W
10ea
40 mA,rms
315
Ω
240
Ω
165
Ω
110 Vac
4W
10ea
40 mA,rms
530
Ω
455
Ω
380
Ω
120 Vac
4W
10ea
40 mA,rms
755
Ω
680
Ω
605
Ω
A
B
C
Figure 4. Resistor driving circuit for 220Vac
Table 3. Resistor values in Figure 4.
Target
Drive
Current
Input
Voltage
Power
dissipation
LED#
220 Vac
4W
10ea
20 mA,rms
230 Vac
4W
10ea
20 mA,rms
240 Vac
4W
10ea
20 mA,rms
VF bins
A
Ω
2640 Ω
3080 Ω
2200
B
Ω
2340 Ω
2780 Ω
1900
C
Ω
2040 Ω
2480 Ω
1600
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Z-Power LED
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Technical
Data
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2.3 Capacitive Circuit
SAW8KG0B can be operated in three additional optional configurations if higher efficiency or
less flicker is needed. These capacitive configurations can lower power factor as seen in Table 4.
The three different capacitive configurations consist of a bridge diode, resistor, and capacitor(s).
Optional Configuration #1 : output resistor + output capacitor(parallel)
Optional Configuration #2 : Input capacitor(series) + output resistor
Optional Configuration #3 : Input capacitor(series) + output capacitor(parallel) + output resistor
Table 4 shows detail circuit characteristic of four configurations that are operated in 230Vac/50Hz.
LED #
LED VF rank
Vin
Frequency
Standard AC Drive
Optional
Configuration #1
Optional
Configuration #2
Optional
Configuration #3
10 ea
10 ea
10 ea
10 ea
C
C
C
C
230 Vac
230 Vac
230 Vac
230 Vac
50 Hz
50 Hz
50 Hz
50 Hz
Ω
4750
Ω
100
Ω
390
Ω
Rout
2040
Cin
N/A
N/A
550 nF
1130 nF
Cout
N/A
47 uF
N/A
47 uF
LED current
20 mA,rms
20 mA,rms
20 mA,rms
20 mA,rms
Input current
20 mA,rms
100 mA,rms
20 mA,rms
40 mA,rms
Pin
4.16 W
6.52 W
3.23 W
4.71 W
Pled
3.33 W
4.54 W
3.17 W
4.53 W
Effciency(Pled/Pin)
80.15%
69.56%
98.19%
96.23%
Noticeable flicker
100Hz
no
100Hz
no
0.90
0.28
0.70
0.51
PF
40
Standard AC driving
Optional Configuration#1
Optional Configuration#2 35
Optional Configuration#3
Current [mA]
30
25
20
15
10
5
0
0.0
2.5
5.0
7.5
10.0
12.5
15.0
17.5
20.0
Time [ms]
Figure 5. Current waveforms of different circuit configurations
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Z-Power LED
X10490
Technical
Data
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Optional circuit configuration#1: This adds an output capacitor to the standard circuit. This
configuration has no flicker. The current shape through the SAW8KG0B package is similar to DC
Current, as seen in Figure 6. Input current and LED current are not the same value. The target
Drive current indicates LED current through SAW8KG0B PKG. There is no difference in resistor
values between 50Hz and 60Hz of frequency.
Figure 6. Optional capacitive drive circuit configuration#1
Table 5. Resistor and capacitor values in Figure 6
Input Voltage
Frequency
LED#
Target
Drive Current
(ILED, not Iin)
Cp
Rseries for VF bins
A
220 Vac
50Hz/60Hz
10 ea
20 mA,rms
47 uF
230 Vac
50Hz/60Hz
10 ea
20 mA,rms
47 uF
240 Vac
50Hz/60Hz
10 ea
20 mA,rms
47 uF
100 Vac
50Hz/60Hz
5 ea
20 mA,rms
100 uF
110 Vac
50Hz/60Hz
5 ea
20 mA,rms
100 uF
120 Vac
50Hz/60Hz
5 ea
20 mA,rms
100 uF
B
Ω
5350 Ω
6050 Ω
1580 Ω
2290 Ω
2990 Ω
4650
Ω
5050 Ω
5750 Ω
1430 Ω
2140 Ω
2840 Ω
4350
C
Ω
4750 Ω
5450 Ω
1280 Ω
1990 Ω
2690 Ω
4050
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Z-Power LED
X10490
Technical
Data
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Optional circuit configuration#2: This adds an input capacitor to the standard circuit. This
Configuration has the same current shape through the 5630 package as the standard AC drive
(as seen in Figure 7), but since it can only drive one LED string it is very suitable for compact
designs. Additionally the circuit efficiency is very high. You can also improve efficiency a little by
eliminating the output resistor(Rout), but SSC recommends using Rout for surge immunity.
Figure 7. Optional capacitive drive circuit configuration#2
Table 6. Resistor and capacitor values in Figure 7 (220Vac)
Input Voltage
Frequency
LED#
Target
Drive Current
(ILED = Iin)
50 Hz
10 ea
20 mA,rms
60 Hz
10 ea
20 mA,rms
220 Vac
Cs for VF bins
Rs
A
Ω
100 Ω
100
B
C
560 nF
590 nF
640 nF
470 nF
490 nF
530 nF
Table 7. Resistor and capacitor values in Figure 7 (220Vac)
Input Voltage
Frequency
LED#
Target
Drive Current
(ILED = Iin)
Cs for VF bins
Rs
A
B
C
50 Hz
10 ea
20 mA,rms
100
Ω
500 nF
520 nF
550 nF
60 Hz
10 ea
20 mA,rms
100
Ω
420 nF
430 nF
460 nF
230 Vac
Table 8. Resistor and capacitor values in Figure 7 (100~120 Vac)
Input Voltage
Frequency
LED#
Target
Drive Current
(ILED = Iin)
50 Hz
5 ea
20 mA,rms
60 Hz
5 ea
20 mA,rms
50 Hz
5 ea
20 mA,rms
60 H
5 ea
20 mA,rms
50 Hz
5 ea
20 mA,rms
60 Hz
5 ea
20 mA,rms
100Vac
110 Vac
120 Vac
Cs for VF bins
Rs
Ω
100 Ω
100 Ω
100 Ω
100 Ω
100 Ω
100
A
B
C
1600 nF
1850 nF
2340 nF
1340 nF
1550 nF
1950 nF
1150 nF
1230 nF
1330 nF
960 nF
1020 nF
1110 nF
920 nF
950 nF
1000 nF
760 nF
800 nF
930 nF
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Z-Power LED
X10490
Technical
Data
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Optional circuit configuration#3: This adds an input capacitor and output capacitor to the
standard circuit. This configuration has no flicker and the current shape through the 5630 package
is similar to DC current, as seen in Figure 8. This means we get a combination of configurations
#1 & 2, higher efficiency and no flicker issues.
Figure 8. Optional capacitive drive circuit configuration#3
Table 9. Resistor and capacitor values in Figure 8 (220Vac)
Input Voltage
Frequency
LED#
Cs for VF bins
Target
Drive Current
(ILED, not Iin)
Cp
50 Hz
10 ea
20 mA,rms
47 uF
60 Hz
10 ea
20 mA,rms
47 uF
220 Vac
Rs
Ω
390 Ω
390
A
B
C
1160 nF
1250 nF
1350 nF
960 nF
1040 nF
1120 nF
Table 10. Resistor and capacitor values in Figure 8 (230Vac)
Input Voltage
Frequency
LED#
Target
Drive Current
(ILED, not Iin)
Cp
Cs for VF bins
Rs
A
50 Hz
10 ea
20 mA,rms
47 uF
60 Hz
10 ea
20 mA,rms
47 uF
230 Vac
Ω
390 Ω
390
B
C
990 nF
1060 nF
1130 nF
830 nF
880 nF
940 nF
Table 11. Resistor and capacitor values in Figure 8 (110~120Vac)
Input Voltage
Frequency
LED#
Target
Drive Current
(ILED, not Iin)
Cp
Cs for VF bins
50 Hz
5 ea
20 mA,rms
100 uF
60 Hz
5 ea
20 mA,rms
100 uF
50 Hz
5 ea
20 mA,rms
100 uF
60 Hz
5 ea
20 mA,rms
100 uF
110 Vac
120 Vac
Rs
Ω
200 Ω
200 Ω
200 Ω
200
A
B
C
2360 nF
2550 nF
2770 nF
1970 nF
2120 nF
2300 nF
1780 nF
1890 nF
2010 nF
1480 nF
1570 nF
1640 nF
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