Document 381 -1
Flyback Transformers for PoE
• Flyback transformers for 6 W and 13 W PoE applications
• Designed to operate with 36 – 72 V input at 250 kHz
• 1500 Vrms. one minute isolation primary and bias to secondary
Designer’s Kit C372
contains two samples of parts shown in bold
Core material
Ferrite
Terminations
RoHS tin-silver over tin over nickel over phos bronze.
Other terminations available at additional cost.
Weight
5.0 – 5.6 g
Ambient temperature
–40°C to +125°C
Storage temperature
Component: –40°C to +125°C.
Tape and reel packaging: –40°C to +80°C
Resistance to soldering heat
Max three 40 second reflows at
+260°C, parts cooled to room temperature between cycles
Moisture Sensitivity Level (MSL)
1 (unlimited floor life at <30°C /
85% relative humidity)
Failures in Time (FIT) / Mean Time Between Failures (MTBF)
38 per billion hours / 26,315,789 hours, calculated per Telcordia SR-332
Packaging
200 per 13″ reel Plastic tape: 44 mm wide, 0.4 mm thick,
28 mm pocket spacing, 9.6 mm pocket depth
PCB washing
Tested to MIL-STD-202 Method 215 plus an additional
aqueous wash. See
Doc787_PCB_Washing.pdf.
Part
number
1
POE60F-18L_
POE60F-25L_
POE60F-33L_
POE60F-50L_
POE60F-12L_
POE13F-18L_
POE13F-25L_
POE13F-33L_
POE13F-50L_
POE13F-12L_
POE13F-19L_
POE13F-24L_
Inductance Inductance
DCR max (Ohms)
4
Power
at 0 A
2
at
Ipk
3
(W)
±10% (µH)
min (µH) pri
sec bias
6
6
6
6
6
13
13
13
13
13
13
13
75.0
55.0
65.0
60.0
55.0
45.0
35.0
40.0
40.0
35.0
37.0
37.0
67.5
49.5
58.5
54.0
49.5
40.5
31.5
36.0
36.0
31.5
33.3
33.3
0.195
0.095
0.138
0.130
0.095
0.195
0.095
0.138
0.130
0.095
0.085
0.086
0.005
0.005
0.007
0.009
0.017
0.005
0.005
0.007
0.009
0.017
0.025
0.049
0.195
0.150
0.180
0.165
0.150
0.195
0.150
0.180
0.165
0.150
0.150
0.150
Leakage
Turns ratios
6
inductance
5
Ipk
3
max (µH) pri: sec pri : bias (A)
8.0
4.6
3.9
2.3
0.7
7.9
4.2
3.4
1.9
0.6
0.4
0.4
1 : 0.07
1 : 0.08
1 : 0.11
1 : 0.15
1 : 0.35
1 : 0.07
1 : 0.08
1 : 0.11
1 : 0.15
1 : 0.35
1 : 0.57
1 : 0.67
1
2
Pri
11
12
10
Bias
3
Output
7
1.8 V, 3.3 A
2.5 V, 2.4 A
3.3 V, 1.8 A
5.0 V, 1.2 A
12 V, 0.5 A
1.8 V, 7.2 A
2.5 V, 5.2 A
3.3 V, 3.9 A
5.0 V, 2.6 A
12 V, 1.1 A
19.5 V, 0.67 A
24 V, 0.54 A
8
7
Sec
6
5
1 : 0.36
1 : 0.33
1 : 0.36
1 : 0.35
1 : 0.35
1 : 0.36
1 : 0.33
1 : 0.36
1 : 0.35
1 : 0.35
1 : 0.35
1 : 0.33
1.3
1.2
1.2
1.1
1.1
2.3
2.2
2.2
2.1
2.0
2.0
2.0
1. When ordering, please specify
packaging
code:
POE13F-12LD
D
= 13″ machine-ready reel. EIA-481 embossed plastic tape (200 parts per
full reel).
B
= Less than full reel. In tape, but not machine ready. To have a leader and
trailer added ($25 charge), use code letter D instead.
2. Inductance is for the primary, measured at 250 kHz, 0.3 Vrms.
3. Peak primary current drawn at minimum input voltage.
4. DCR for the primary and for the secondary are with the windings connected in parallel.
5. Leakage inductance is for the primary windings with the secondary windings shorted.
6. Turns ratios are with the primary the secondary windings connected in parallel.
7. Output of the secondary is with the windings connected in parallel. Bias winding output is
12 V, 20 mA.
8. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
Packaging:
Primary windings and secondary windings
to be connected in parallel on PC board.
US
+1-847-639-6400 sales@coilcraft.com
UK
+44-1236-730595 sales@coilcraft-europe.com
Taiwan
+886-2-2264 3646 sales@coilcraft.com.tw
China
+86-21-6218 8074 sales@coilcraft.com.cn
Singapore
+ 65-6484 8412 sales@coilcraft.com.sg
Document 381-1
Revised 11/30/16
© Coilcraft Inc. 2016
This product may not be used in medical or high
risk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check web site for latest information.
Document 381 -2
Flyback Transformers for PoE
Dimensions are in
inches
mm
US
+1-847-639-6400 sales@coilcraft.com
UK
+44-1236-730595 sales@coilcraft-europe.com
Taiwan
+886-2-2264 3646 sales@coilcraft.com.tw
China
+86-21-6218 8074 sales@coilcraft.com.cn
Singapore
+ 65-6484 8412 sales@coilcraft.com.sg
Document 381-2
Revised 11/30/16
© Coilcraft Inc. 2016
This product may not be used in medical or high
risk applications without prior Coilcraft approval.
Specification subject to change without notice.
Please check web site for latest information.
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