© Coilcraft, Inc. 2009
Specifications subject to change without notice.
Please check our website for latest information.
Flyback Transformers for PoE
Document 381 -1
Document 381-1
Revised 10/28/08
1. When ordering, please specify packaging code:
POE13F-12L
D
Packaging: 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.
Inductance Inductance
Leakage
Part
Power
at 0 A2
at Ipk3
DCR max (Ohms)4
inductance5
Turns ratios6
Ipk3
number1
(W)
±10% (µH)
min (µH)
pri
sec
bias
max (µH)
pri :sec
pri :bias
(A)
Output7
POE60F-18L_
6
75.0
67.5
0.195
0.005
0.195
8.0
1 : 0.07
1 : 0.36
1.3
1.8 V, 3.3 A
POE60F-25L_
6
55.0
49.5
0.095
0.005
0.150
4.6
1 : 0.08
1 : 0.33
1.2
2.5 V, 2.4 A
POE60F-33L_
6
65.0
58.5
0.138
0.007
0.180
3.9
1 : 0.11
1 : 0.36
1.2
3.3 V, 1.8 A
POE60F-50L_
6
60.0
54.0
0.130
0.009
0.165
2.3
1 : 0.15
1 : 0.35
1.1
5.0 V, 1.2 A
POE60F-12L_
6
55.0
49.5
0.095
0.017
0.150
0.7
1 : 0.35
1 : 0.35
1.1
12 V, 0.5 A
POE13F-18L_
13
45.0
40.5
0.195
0.005
0.195
7.9
1 : 0.07
1 : 0.36
2.3
1.8 V, 7.2 A
POE13F-25L_
13
35.0
31.5
0.095
0.005
0.150
4.2
1 : 0.08
1 : 0.33
2.2
2.5 V, 5.2 A
POE13F-33L_
13
40.0
36.0
0.138
0.007
0.180
3.4
1 : 0.11
1 : 0.36
2.2
3.3 V, 3.9 A
POE13F-50L_
13
40.0
36.0
0.130
0.009
0.165
1.9
1 : 0.15
1 : 0.35
2.1
5.0 V, 2.6 A
POE13F-12L_
13
35.0
31.5
0.095
0.017
0.150
0.6
1 : 0.35
1 : 0.35
2.0
12 V, 1.1 A
POE13F-19L_
13
37.0
33.3
0.085
0.025
0.385
0.4
1 : 0.57
1 : 0.35
2.0
19.5 V, 0.67 A
POE13F-24L_
13
37.0
33.3
0.086
0.049
0.370
0.4
1 : 0.67
1 : 0.33
2.0
24 V, 0.54 A
3
10
5
12
8
1
Bias
Pri
Sec
7
2
6
11
Primary windings and secondary windings
to be connected in parallel on PC board.
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.
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 Only pure water or alcohol recommended
• Flyback transformers for 6 W and 13 W PoE applications
• Designed to operate with 36 – 72 V input at 250 kHz
• 1500 Vrms isolation from primary and bias to secondary
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