Document 522 -1
Flyback Transformers
For 30 Watt
PoE Applications
• Designed to meet 30 W PoE IEEE 802.3at-2009 standard.
• Operates at 250 kHz with 36–72 Volts input.
• Isolation: 1500 Vrms, one minute pri to sec; 500 Vrms pri to aux
Designer’s Kit
C398 contains three samples of each part.
Core material
Ferrite
Terminations
RoHS tin-silver over tin over nickel over phos bronze.
Other terminations available at additional cost.
Weight
11.9 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
175 per 13″ reel Plastic tape: 44 mm wide, 0.4 mm thick,
32 mm pocket spacing, 11.9 mm pocket depth
PCB washing
Tested with pure water or alcohol only. For other solvents,
see Doc787_PCB_Washing.pdf.
Part
number
1
POE300F-33L_
POE300F-50L_
POE300F-12L_
POE300F-19L_
POE300F-24L_
Inductance Inductance
at 0 A
2
at
Ipk
3
±10% (µH)
min (µH)
42.0
42.0
42.0
42.0
42.0
37.8
37.8
37.8
37.8
37.8
DCR max (Ohms)
pri
4
sec
4
aux
0.070
0.069
0.061
0.060
0.060
0.0023
0.0050
0.015
0.037
0.055
0.220
0.225
0.195
0.195
0.195
Leakage
Turns ratio
6
inductance
5
max (µH) pri : sec pri : aux
3.00
1.60
0.545
0.430
0.310
1
2
Pri
4
3
5
Aux
6
Ipk
3
(A)
2.6
2.6
2.6
2.6
2.6
12
11
10
Sec
9
8
7
Output
7
3.3 V, 9 A
5 V, 6 A
12 V, 2.5 A
19.5 V, 1.5 A
24 V, 1.25 A
1 : 0.09
1 : 0.14
1 : 0.33
1 : 0.56
1 : 0.67
1 : 0.33
1 : 0.33
1 : 0.33
1 : 0.33
1 : 0.33
1. When ordering, please specify
packaging
code:
POE300F-50LD
Packaging: D
= 13″ machine-ready reel. EIA-481 embossed plastic
tape (175 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, 0.7 Vrms, 0 Adc.
3. Peak primary current drawn at minimum input voltage.
4. DCR is with the windings connected in parallel.
5. Leakage inductance is for the primary winding with the secondary wind-
ings shorted.
6. Turns ratio is with the primary and the secondary windings connected in
parallel.
7. Output is with the secondary windings connected in parallel. Output of
the auxiliary winding is 12 V
8. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
The primary windings and the secondary
windings to be connected in parallel on
the 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 522-1
Revised 03/15/12
© Coilcraft Inc. 2013
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 522-2
Flyback Transformers for PoE Plus – POE300F
Dot indicates pin 1
1
12
0.810 max
20,57
6
POE300F-XXX
XXXXY
7
Part number
Internal code
Parts manufactured prior
to February, 2012 may be
marked differently.
1.181
max
30,00
0.450 max
11,43
0.084
2,13
0.969
24,6
0.004 /0,10
0.827
21,0
6
0.028
7
0,72
0.130
3,30
1
0.930
23,62
0.050
1,27
Recommended
Land Pattern
1
12
0.118
3,0
0.118
3,0
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 522-2
Revised 03/15/12
© Coilcraft Inc. 2013
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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