E L E C T R O N I C S I N C .
Power over Ethernet (PoE/PD)
Flyback Transformer
TEL: (818) 892-0761
FAX: (818) 894-5791
http://www.pca.com
PCA ELECTRONICS, INC.
16799 SCHOENBORN ST.
NORTH HILLS, CA 91343
Used in SMPS DC/DC Converter as a Flyback
Transformer in PoE/Powered Devices (PD)
Switching Frequency : 300 KHz to 400 KHz
Add "-LF" after part number for Lead Free
* 40 % Duty Cycle Typ. @ 48 V Input
UL 94V-0 Recognized Components
UL 1446 Class B Insulation System
Low Core Loss Material
EPC3248G-X & EPC3248G-X-LF
Product performance is limited to specified parameters. Data is subject to change without prior notice.
Unless Otherwise Specified Dimensions are in Inches /mm .010 /.25
CSC3248G-X & -LFa Rev. 3 9/26/05 FT
Electrical Specifications @ 25C
PoE
Class
0
0
0
1
1
1
2
2
2
3
3
3
4(PoEP)
4(PoEP)
4(PoEP)
Current
(Amp.)
Part
Number
EPC3248G-1
EPC3248G-2
EPC3248G-3
EPC3248G-4
EPC3248G-5
EPC3248G-6
EPC3248G-7
EPC3248G-8
EPC3248G-9
EPC3248G-10
EPC3248G-11
EPC3248G-12
EPC3248G-13
EPC3248G-14
EPC3248G-15
Chipset
DPA425
DPA425
DPA425
DPA423
DPA423
DPA423
DPA424
DPA424
DPA424
DPA424/5
DPA424/5
DPA424/5
DPA426
DPA426
DPA426
PD
Power
(Watts)
ER14.5
ER14.5
ER14.5
ER9.5
ER9.5
ER9.5
ER11
ER11
ER11
ER14.5
ER14.5
ER14.5
EFD20
EFD20
EFD20
Package
Type
1
1
1
2
2
2
1
1
1
1
1
1
3
3
3
Schematic
Default
Default
Default
Optional
Optional
Optional
Optional
Optional
Optional
Optional
Optional
Optional
Reserved
Reserved
Reserved
Class
Usage
Notes :
1. Assembly Process
(Solder Composition)
2. Peak Solder Rating
(per IPC/JEDEC-J-STD-020C)
4. Weight
5. Packaging Information
(Tube)
EPC3248-X
SnPb
225C
TBD grams
TBD pcs / tube
3. Moisture Sensitive Levels (MSL)
(per IPC/JEDEC-J-STD-020C)
1
(Unlimited,
30C/60%RH)
EPC3248-X-LF
Pb-Free
260C
TBD grams
TBD pcs / tube
1
(Unlimited,
30C/60%RH)
Primary OCL
(H 10%)
@ 300 KHz,
0.1 Vrms
120
120
120
200
200
200
120
120
120
120
120
120
25
25
25
12.95
12.95
12.95
3.84
3.84
3.84
6.49
6.49
6.49
12.95
12.95
12.95
Max.
0.44
0.44
0.44
0.44
0.44
0.44
3.84
3.84
3.84
6.49
6.49
6.49
Min.
Voltage
(Vdc)
.050
.050
.050
.050
.050
.050
.050
.050
.050
.050
.050
.050
.050
.050
.050
Fb
Bias
3.92
2.59
1.08
1.16
0.77
0.32
1.97
1.30
0.54
3.92
2.59
1.08
12.12
8.0
3.33
Sec 1
13.2
13.33
12.0
13.2
13.33
12.0
13.2
13.0
12.0
13.2
13.2
12.0
13.2
13.2
12.0
Fb
Bias
36-57
36-57
36-57
36-57
36-57
36-57
36-57
36-57
36-57
36-57
36-57
36-57
36-57
36-57
36-57
V In
3.3
5.0
12.0
3.3
5.0
12.0
3.3
5.0
12.0
3.3
5.0
12.0
3.3
5.0
12.0
V Out
Isolation : Pri., Bias to Sec. ; 1500 Vrms Isolation : Pri. to Bias ; 500 Vrms
Note :
1. Input Pins : Pins 1 & 3
2. Connect Pins 9,10 and 6,7 in
user board for higher power
Schematic 1
V In (Pins 1-3)
[36-57 Vdc]
10
5
2
1
9
7
6
3
4
Sec. 1
Fb/Bias
[13.2 V/0.05 A]
Note :
1. Input Pins : Pins 1 & 3
2. Connect Pins 12,11,10 and 9,8,7
in user board for higher power
Schematic 3
(Reserved for Class 4 PoEP)
V In (Pins 1-3)
[36-57 Vdc]
11
6
2
1
10
8
7
3
5
Sec. 1
Fb/Bias
[13.2 V/0.05 A]
9
12
Reserved
Reserved
Reserved
Note : Class 4 is currently reserved for Power over Ethernet Plus (PoEP) and should not be used at this time.
Note :
1. Input Pins : Pins 1 & 2
2. Connect Pins 8,7 and 5,6 in
user board for higher power
Schematic 2
V In
[36-57 Vdc]
8
4
2
1
7
6
5
3
Sec. 1
Fb/Bias
[13.2 V/0.05 A]
E L E C T R O N I C S I N C .
Power Over Ethernet (PoE/PD)
Flyback Transform
TEL: (818) 892-0761
FAX: (818) 894-5791
http://www.pca.com
PCA ELECTRONICS, INC.
16799 SCHOENBORN ST.
NORTH HILLS, CA 91343
EPC3248G-X & EPC3248G-X-LF
Product performance is limited to specified parameters. Data is subject to change without prior notice.
Unless Otherwise Specified Dimensions are in Inches /mm .010 /.25
CSC3248G-X & -LFb Rev. 3 9/26/05 FT
Package ER9.5
Pin 1
I.D.
.235
Max.
(6.00)
.455
(11.55)
0-8
.028
(.725)
.010
(.254)
Solder Pad
Layout
.495
(12.57)
.079
(2.00)
.063
(1.60)
.063
(1.60)
.079
(2.00)
.028
(.700)
.006
(.150)
.417
Max.
(10.60)
.236
(6.00)
8
5
4
1
.319
(8.10)
Marking :
PCA
EPC3248G-X
D.C.
Package ER14.5
.394
(10.00)
.630
(16.00)
0-8
.028
(.700)
.021
(.305)
Solder Pad
Layout
.670
(17.02)
.098
(2.50)
.067
(1.70)
.067
(1.70)
.295
(7.50)
.098
(2.50)
.028
(.700)
.014 Max.
(.350)
Marking :
PCA
EPC3248G-X
Date Code
.571
(15.50)
Pin 1 I.D.
10
6
5
1
Pin 1
I.D.
.244
Max.
(6.20)
.480
(12.20)
0-8
.024
(.600)
.010
(.254)
Solder Pad
Layout
.520
(13.20)
.079
(2.00)
.063
(1.60)
.063
(1.60)
.079
(2.00)
.028
(.700)
.008
(.200)
.457
Max.
(11.60)
.315
(8.00)
10
6
5
1
.362
(9.20)
Glue to
Bobbin
PCA
EPC3248G-X
D.C.
Package ER11
Package EFD20
(Reserved for Class 4 PoEP)
.591
(15.00)
.118
(3.00)
.854 Max.
(21.70)
.835 Max.
(21.20)
Pin 1
I.D.
1
12
6
7
.028
(.700)
Side Marking :
PCA
EPC3248G-X
D.C.
1.055
(26.80)
.080
(2.03)
0-8
.010
(.250)
.425 Max.
(10.80)
.016
(.400)
.118
(3.00)
1.094
(28.60)
1
12
6
7
.138
(3.50)
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