PoE Flyback Transformer
ELECTRONICS INC.
EPC3391G & EPC3391G-LF
• 45W PoE Applications
• Designed to work with LT1725
• Used in Flyback Topology Converter
• Bobbin : UL94V-0 Recognized Materials
• Storage Temperature : -40°C to +125°C
• Operating Temperature : 0°C to +70°C
• UL 1446 Class B Insulation System
• Duty Cycle : 50% Max.
Electrical Parameters @ 25° C
Inductance
(µH ± 10%)
@ 100 KHz,
1.0 Vrms
42
Pins
1-3
0.1
Pins
1-3
DCR
(Ω Typ.)
Turns
Ratio
Leakage Inductance
(µH Max.)
@ 100 KHz,
1.0 Vrms
Dielectric Rating
(Vrms)
0.135
Pins
5-6
0.06
Pins
8-11
2.4:1
Pins
1-3:5-6
0.9:1
Pins
1-3:8-11
1.0
Pins 1-3 All
other wdg’s shorted
1500
Wdg’s - Wdg’s
Wdg’s - Core
Package
Pin 1 I.D.
Pri.
(36-57 Vdc)
.810
(20.57)
1
3
5
6
Schematic
8
11
Marking:
PCA
EPC3391G(-LF)
D.C.
Sec.
36 V (1.25 A)
Vcc
15 V (10 mA)
.450
Max.
(11.43)
.969
(24.60)
.827
(21.00)
0.004
(.100)
.084
(2.13)
.028
(.720)
.130
(3.30)
.930
(23.62)
.050
(1.27)
6
7
PCB Layout
(Top View)
1
12 .118
(3.00)
.118
(3.00)
Component Outline
1.250 x .850
(31.75 x 21.60)
Notes :
1. Lead Finish
2. Peak Solder Rating
(for wave solder process Only)
EPC3391G
SnPb
225°C
11.1 grams
(Tube)
25 pcs / tube
EPC3391G-LF
Hot Tin Dip (Sn)
260°C
11.1 grams
25 pcs / tube
3. Weight
4. Packaging Information
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.
CSC3391G & -LF
Rev. 1
12/13/07 JDG
TEL: (818) 892-0761
FAX: (818) 894-5791
http://www.pca.com