PCA EPC3145

Flyback Transformer
EPC3145
ELECTRONICS INC.
• Used in SPMS Flyback Topolgy
• Gapped Transformer
• Low Core Loss Material
• UL 94V-0 Recognized Components
• UL 1446 Class B Insulation System
• Works up to 200 KHz Switching Frequency
Primary Specification
Inductance
(µH ± 10%)
DCR
(Ω Typ.)
Turns Ratio
Leakage Inductance
(µH Typ.)
10 KHz,
0.1 Vrms
Isolation
(Vrms)
100 KHz
0.1 Vrms
302
1.17
.030
Pins 1-2
Pins
1-2
Pins
8-7
.008
Pins
6-5
.122
Pins
3-4
1 Minute
1 Minute
18
7.916
19.0
13.57
1500
500
Pins 1-2 with
3,4,5,6,7,8 Shorted
Pins 1-2 to
Pins 8-7
Pins 1-2 to
Pins 6-5
Pins 1-2 to
Pins 3-4
Pri. to Sec 1
Sec. 2, Sec 3
Pri., Sec 1, Sec 3
Sec. 2 to Core
Schematic
Copper Shield
Notes :
1. Pri Ipk = 1.4 Amp
2. Pri Irms = 0.58 Amp
1
Pri.
2
8
Sec. =1 Irms = 3.29 Amp
(12 V)
7
3
Sec =3 Irms = 0.3 Amp
(7 V)
4
6
Sec. =2 Irms = 6.11 Amp
(5 V)
5
Package
.787 Max.
(20.00)
White Dot
Pin # 1
PCA
EPC3145
D.C
.689 Max.
(17.50)
Side
.150 Min.
(3.80)
.150
(3.80)
.026
(.650)
1
4
.669 Max.
(17.00)
.514
(13.05)
8
Bottom
5
.118 Max.
(3.00)
.201
(5.10)
Unless Otherwise Specified Dimensions are in Inches /mm ± .010 /.25
PCA ELECTRONICS, INC.
16799 SCHOENBORN ST.
NORTH HILLS, CA 91343
Product performance is limited to specified parameters. Data is subject to change without prior notice.
CSC3145
Rev. -
5/14/03
TEL: (818) 892-0761
FAX: (818) 894-5791
http://www.pca.com