E L E C T R O N I C S I N C .
Flyback Power Transformer
TEL: (818) 892-0761
FAX: (818) 894-5791
http://www.pca.com
PCA ELECTRONICS, INC.
16799 SCHOENBORN ST.
NORTH HILLS, CA 91343
EPC3129-X
Product performance is limited to specified parameters. Data is subject to change without prior notice.
Electrical Parameters @ 25 C
Unless Otherwise Specified Dimensions are in Inches /mm .010 /.25
CSC3129-X Rev. 1 4/9/03 FT
Package
Voltage
(Vdc)
Primary
OCL
(H 10%)
876
1000
@ 10 KHz,
0.1 Vrms
TOP244Y
TOP243P
Chipset
120-375
120-375
V in
12
5
V out
1
Current
(Amp.)
Note : "N" means Not Required/No Connections
PCA
Part
Number
EPC3129-1
EPC3129-2
Schematic A
1
3
4
5
6
7
9
10
V in Pri.
Sec. 3
(Fb/Bias)
Sec. 1
Sec. 2
Schematic B
N
3.3
V out
2
15
15
V out
3
2.5
0.9
Sec.
1
N
1.5
Sec.
2
.05
.05
Sec.
3
A
B
Schematic
Dielectric Rating
(Vrms)
Between Sec. Wdg's to Core
1 sec. 4500 or 60 sec. 3750
Pri. to all Sec. Wdg's & Core
1 sec. 4500 or 60 sec. 3750
Between Pri. Wdg & Bias
1 sec. 1500
---
30
V out
4
---
.03
Sec.
4
1
3
4
5
6
7
9
10
Pri.
Sec. 3
(Fb/Bias)
Sec. 4
Sec. 2
Sec. 1
* Shield is optional
1.130
(28.80)
.846
Max.
(21.50)
.138
(3.50)
.028 Sq.
(.700)
.197
(5.00)
.197
(5.00)
.051
(1.30)
.787
(20.00)
Suggested
Layout
1.130
(28.80)
.787
Typ.
(20.00)
PCA
EPC3129-X
D.C.
Used in SMPS Flyback Topology
Designed for use with Power Integration Chip
Reinforced Insulation (Triple Insulated Wire)
UL 94V-0 Recognized Components
UL 1446 Class F Insulation System
Very Low Core Loss
Switching Frequency : 132 KHz Isolation : 4500 Vrms
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