25W PoE Flyback Transformer
EPC3492G & EPC3492G-LF
E L E C T R O N I C S I N C .
• Designed to work with Linear Tech LTC4278
• Bobbin : UL94V-0 Recognized Materials
• Storage Temperature : -40°C to +125°C
• Operating Temperature : 0°C to +70°C
• Class 130ºC Insulation System
• Duty Cycle : 62% Max.
• Switching Frequency : 250kHz
• Add “-LF” after part for Lead Free
Electrical Parameters @ 25° C
Cw-w
(pF Typ.)
Turns
Ratio
Inductance
(µH ± 5%)
DCR
(mW Typ.)
Leakage Inductance
Dielectric Rating
(µH Max.)
(Vrms)
@ 100 KHz,
1.0 Vrms
@ 100 KHz,
1.0 Vrms
@ 100 KHz,
1.0 Vrms
13.5
Pri.
280
50
1:1.75
Pri.:Sec.
1:0.75
70
0.10
1500
9.0
Pri.
Pri. w/ Aux. and Sec.
shorted
Wdg. - Wdg.
Wdgs. - Core
Aux.
Sec.
Pri.:Aux.
Pri. to Aux. and Sec.
Package
Schematic
1
2
3
4
5
6
12
11
1
6
12
0.830
Pri.
10V to 57V
Sec.
24V (1A)
(21.08)
7
8
7
Aux.
10V (30mA)
0.440 Max.
(11.18)
0.004
(0.10)
1.128
(28.65)
0.079
(2.01)
0.150
(3.81)
0.866
(22.0)
0.875
(22.23)
0.080
(2.03)
0.028
(0.71)
6
7
PCB Layout
(Top View)
Component Outline
1.20 x 0.840
(30.48 x 21.34)
0.118
(3.00)
0.118
(3.00)
1
12
EPC3492G
Notes :
EPC3492G-LF
1. Lead Finish
SnPb
Hot Tin Dip (Sn) or SnCu
260°C
2. Peak Solder Rating
(for wave solder process Only)
225°C
3. Weight
4. Packaging Information
13.5 grams
13.5 grams
(Tube)
25 pcs / tube
25 pcs / tube
Unless Otherwise Specified Dimensions are in Inches /mm ± .010 /.25
Product performance is limited to specified parameters. Data is subject to change without prior notice.
CSC3492G & -LF Rev. 11-13-09 RR
PCA ELECTRONICS, INC.
16799 SCHOENBORN ST.
NORTH HILLS, CA 91343
TEL: (818) 892-0761
FAX: (818) 894-5791
http://www.pca.com