Specification Number
SGE2643-3
Rev. C (072601)
This Document describes and specifies the electrical and mechanical characteristics of SGE2643-3 high voltage transformer
for CCFL inverter power supply. This component should be designed and manufactured in accordance with Engineering
Specification LES3811T
Magnetic Component Specification
1. Electrical Characteristics
Items
L1-2, L2-3 (uH)
L4-5 (mH)
L
LKG2-4
,L
LKG4-6
(uH)
Inductance ( at 10Khz, 0.1V)
Min
Nom
Max
Items
D.C Resistance
Min
Nom
Max
124
144
168
890
1012
1210
Inductance ( at 100Khz, 1Vrms)
14.7
15.7
16.7
Should be shorted pin 4-5
Secondary Self Capacitance
C4-5 (pF)
2.0
2.5
3.0
Dielectric Voltage Withstand
Secondary to Core
60 Hz.,Arc-detect enabled, 5
sec. min., 200uA max.
Primary to Core
leakage current
Primary to Secondary
Operating Test
V4-5
Primary driven with 60 kHz.
sine wave source (pin 1-3),
secondary measured with
Tektronix P6015 (or equiv.)..
170
190
210
R1-2, R2-3(mΩ)
405
415
430
Rdc4-5(Ω)
R1-2/R2-3
0.96
1
1.04
Balance of Primary DC resistance will be used
as Bifilar winding measure tool
HP4280A 1Mhz C meter, Floating mode
2500Vrms min. ( 1min. 60Hz)
1000Vrms min.
2000Vrms min.
2000Vrms min.
2. Winding Specifications
Primary
Winding Sequence
Wire Size & Type
Number of Turns
Winding Method
Pin 1 – 2
Pin 2-3
2S-1F
3S-2F
#35 x2, Single Insulation, #35 x2, Single Insulation,
130°C
130°C
20
20
Bifilar on Sector #1
Secondary
Pin 4-5
5S-4F
#46, Triple insulation,
130°C
1700
Sector #3 to #7. skip #2
3. Physical Specification & Wiring Diagram
Linfinity Microelectronics, Inc., 11861 Western Ave., Garden Grove, CA 92841 tel. (714) 898-8121
Industrial Control Electronics
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