Power over Ethernet (PoE/PD)
Flyback Transformer
ELECTRONICS INC.
EPC3248G-X & EPC3248G-X-LF
• 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
Electrical Specifications @ 25°C
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
Class
Voltage
Primary OCL
Current
Power
Usage
(Vdc)
(µH ± 10%)
(Amp.)
(Watts)
@ 300 KHz,
Fb
Fb
0.1 Vrms
V In
V Out Bias
Min.
Max.
Sec 1 Bias
0
0.44 12.95
Default
36-57
3.3
13.2
120
3.92 .050
0
0.44 12.95
Default
36-57
5.0 13.33
120
2.59 .050
0
0.44 12.95
Default
36-57 12.0 12.0
120
1.08 .050
1
0.44
3.84
Optional
36-57
3.3
13.2
200
1.16 .050
1
0.44
3.84
Optional
36-57
5.0 13.33
200
0.77 .050
1
0.44
3.84
Optional
36-57 12.0 12.0
200
0.32 .050
2
3.84
6.49
Optional
36-57
3.3
13.2
120
1.97 .050
2
3.84
6.49
Optional
36-57
5.0
13.0
120
1.30 .050
2
3.84
6.49
Optional
36-57 12.0 12.0
120
0.54 .050
3
6.49 12.95
Optional
36-57
3.3
13.2
120
3.92 .050
3
6.49 12.95
Optional
36-57
5.0
13.2
120
2.59 .050
3
6.49 12.95
Optional
36-57 12.0 12.0
120
1.08 .050
4(PoEP)
Reserved
Reserved
36-57
3.3
13.2
25
12.12 .050
4(PoEP)
Reserved
Reserved
36-57
5.0
13.2
25
8.0
.050
4(PoEP)
Reserved
Reserved
36-57 12.0 12.0
25
3.33 .050
• Isolation :
Pri., Bias to Sec. ; 1500 Vrms
• Isolation :
Pri. to Bias ; 500 Vrms
•
PoE
Class
Package
Type
ER14.5
ER14.5
ER14.5
ER9.5
ER9.5
ER9.5
ER11
ER11
ER11
ER14.5
ER14.5
ER14.5
EFD20
EFD20
EFD20
Schematic
1
1
1
2
2
2
1
1
1
1
1
1
3
3
3
Note : Class 4 is currently reserved for Power over Ethernet Plus (PoEP) and should not be used at this time.
Notes :
1. Assembly Process
(Solder Composition)
2. Peak Solder Rating
(per IPC/JEDEC-J-STD-020C)
EPC3248-X
SnPb
225°C
1
(Unlimited,
≤30°C/60%RH)
TBD grams
(Tube)
TBD pcs / tube
EPC3248-X-LF
Pb-Free
260°C
1
(Unlimited,
≤30°C/60%RH)
TBD grams
TBD pcs / tube
3. Moisture Sensitive Levels (MSL)
(per IPC/JEDEC-J-STD-020C)
4. Weight
5. Packaging Information
Schematic 1
1
V In (Pins 1-3)
[36-57 Vdc]
10
2
3
Fb/Bias
[13.2 V/0.05 A]
4
6
5
9
Sec. 1
7
V In
[36-57 Vdc]
Fb/Bias
[13.2 V/0.05 A]
1
2
3
4
Schematic 2
Schematic 3
(Reserved for Class 4 PoEP)
1
8
7
Sec. 1
6
5
V In (Pins 1-3) 2
[36-57 Vdc]
3
5
Fb/Bias
[13.2 V/0.05 A]
6
12
11
10
Sec. 1
9
8
7
Note :
1. Input Pins : Pins 1 & 3
2. Connect Pins 9,10 and 6,7 in
user board for higher power
Note :
1. Input Pins : Pins 1 & 2
2. Connect Pins 8,7 and 5,6 in
user board for higher power
Note :
1. Input Pins : Pins 1 & 3
2. Connect Pins 12,11,10 and 9,8,7
in user board for higher power
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.
CSC3248G-X & -LFa
Rev. 3
9/26/05 FT
TEL: (818) 892-0761
FAX: (818) 894-5791
http://www.pca.com
Power Over Ethernet (PoE/PD)
Flyback Transform
ELECTRONICS INC.
EPC3248G-X & EPC3248G-X-LF
Package ER11
Solder Pad
Layout
Solder Pad
Layout
.457
Max.
(11.60)
10
PCA
EPC3248G-X
D.C.
Package ER9.5
Marking :
PCA
EPC3248G-X
D.C.
.417
Max.
(10.60)
8
5
.079
(2.00)
.319
(8.10)
.495
(12.57)
.063
(1.60)
6
Glue to
Bobbin
.079
(2.00)
.063
(1.60)
Pin 1
I.D.
1
4
Pin 1
I.D.
.362
(9.20)
5
.520
(13.20)
1
.236
(6.00)
.235
Max.
(6.00)
.063
(1.60)
.315
(8.00)
.063
(1.60)
.006
(.150)
0°-8°
.010
(.254)
.244
Max.
(6.20)
.028
(.700)
.008
(.200)
0°-8°
.010
(.254)
.028
(.700)
.079
(2.00)
.028
(.725)
.455
(11.55)
.079
(2.00)
.024
(.600)
.480
(12.20)
Package ER14.5
Marking :
PCA
EPC3248G-X
Date Code
.067
(1.70)
Package EFD20
(Reserved for Class 4 PoEP)
Pin 1
I.D.
1
.571
(15.50)
6
.098
(2.50)
.854 Max.
(21.70)
12
.028
(.700)
10
Pin 1 I.D.
1
5
.670 Solder Pad
(17.02) Layout
.118
.591 (3.00)
(15.00)
6
7
.835 Max.
(21.20)
.394
(10.00)
.014 Max.
(.350)
.067
(1.70)
.021
(.305)
Side Marking :
PCA
EPC3248G-X
D.C.
0°-8°
.295
(7.50)
.016
(.400)
.425 Max.
(10.80)
0°-8°
.028
(.700)
.098
(2.50)
.028
(.700)
.630
(16.00)
.080
(2.03)
1.055
(26.80)
.010
(.250)
.138
(3.50)
.118
(3.00)
1
12
6
7
1.094
(28.60)
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.
CSC3248G-X & -LFb
Rev. 3
9/26/05 FT
TEL: (818) 892-0761
FAX: (818) 894-5791
http://www.pca.com
ST - Low Power RF
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EEWORLD
