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 Chipset 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 DPA425 DPA425 DPA425 DPA423 DPA423 DPA423 DPA424 DPA424 DPA424 DPA424/5 DPA424/5 DPA424/5 DPA426 DPA426 DPA426 PoE Class 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 • Package Type Schematic ER14.5 ER14.5 ER14.5 ER9.5 ER9.5 ER9.5 ER11 ER11 ER11 ER14.5 ER14.5 ER14.5 EFD20 EFD20 EFD20 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. EPC3248-X EPC3248-X-LF 1. Assembly Process (Solder Composition) Notes : SnPb Pb-Free 2. Peak Solder Rating 225°C 260°C 1 (Unlimited, ≤30°C/60%RH) 1 (Unlimited, ≤30°C/60%RH) TBD grams TBD grams TBD pcs / tube TBD pcs / tube (per IPC/JEDEC-J-STD-020C) 3. Moisture Sensitive Levels (MSL) (per IPC/JEDEC-J-STD-020C) 4. Weight 5. Packaging Information (Tube) Schematic 1 Schematic 2 Schematic 3 (Reserved for Class 4 PoEP) 1 V In (Pins 1-3) [36-57 Vdc] 2 3 Fb/Bias [13.2 V/0.05 A] 1 10 9 Sec. 1 7 4 6 V In [36-57 Vdc] Fb/Bias [13.2 V/0.05 A] 1 8 2 3 7 Sec. 1 6 4 5 5 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 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 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 ER9.5 Package ER11 Solder Pad Layout Marking : PCA EPC3248G-X D.C. Pin 1 I.D. .417 Max. (10.60) .457 Max. (11.60) .063 (1.60) .079 (2.00) 8 Solder Pad Layout 10 5 .319 (8.10) .495 (12.57) Pin 1 I.D. 4 1 .236 (6.00) 6 1 .006 (.150) .315 (8.00) .010 (.254) 0°-8° .008 (.200) .571 (15.50) .028 (.700) .067 (1.70) Pin 1 I.D. 12 .118 .591 (3.00) (15.00) .670 Solder Pad (17.02) Layout 1 .835 Max. (21.20) 5 7 6 .394 (10.00) Side Marking : PCA EPC3248G-X D.C. 0°-8° .067 (1.70) .014 Max. (.350) .295 (7.50) .028 (.700) .028 (.700) .854 Max. (21.70) 1 6 Pin 1 I.D. .024 (.600) .480 (12.20) .079 (2.00) Package EFD20 (Reserved for Class 4 PoEP) .098 (2.50) 10 .010 (.254) 0°-8° Package ER14.5 Marking : PCA EPC3248G-X Date Code .063 (1.60) .244 Max. (6.20) .028 (.725) .455 (11.55) .079 (2.00) .028 (.700) .520 (13.20) 5 .063 (1.60) .235 Max. (6.00) Glue to Bobbin .362 (9.20) PCA EPC3248G-X D.C. .063 (1.60) .079 (2.00) .098 (2.50) .021 (.305) 0°-8° .016 (.400) .080 (2.03) .028 (.700) .630 (16.00) .425 Max. (10.80) .010 (.250) 1.055 (26.80) .138 (3.50) .118 (3.00) 1 12 7 6 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