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Document 1468-1
High Power PoE Flyback Transformers
Halogen
Free
• Developed for Flyback DC/DC PoE PD power converters
up to 51 W
• Designed to meet the upcoming IEEE802.3bt standard and
operates with 36 – 57 V input
• 1500Vrms, one minute isolation (hipot) between primary and
auxiliary to secondary.
• Perfect solution for high power PoE applications including
Smart Building and IoT
AEC
+
Q200 125°C
• AEC-Q200 Grade 1 (–40°C to +125°C)
Core material Ferrite
Environment RoHS compliant, halogen free
Terminations Tin-silver-copper over tin over nickel over phos bronze
Weight 6.5 – 8 g
Ambient temperature –40°C to +125°C
Maximum part temperature +165°C (Ambient + temp rise)
Storage temperature Component: –40°C to +165°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 /
85ꢀ relative humidity)
Inductance
at 0 A2
Leakage
inductance3
max (µH)
DCR max (mOhms)
Turns ratio
pri : sec : aux
Part
Power
(W)
Isat4
(A)
number1
(µH)
pri
sec
aux
Output5
POE40Q-33ED
POE40Q-50ED
POE40Q-12ED
POE40Q-24ED
POE40Q-48ED
40
40
40
40
40
33.3@ 15ꢀ
33.3@ 15ꢀ
27.8@ 15ꢀ
27.8@ 15ꢀ
27.8@ 15ꢀ
64
66
35
35
34
2
4
18
69
266
104
102
85
0.32
0.25
0.14
0.14
0.13
1 : 0.143 : 0.5
1 : 0.214 : 0.5
1 : 0.5 : 0.5
1 : 1 : 0.5
3.5
3.5
3.7
3.7
3.7
3.3 V, 11 A
5 V, 7.3 A
12 V, 3 A
85
24 V, 1.5 A
48 V, 0.76 A
85
1 : 2 : 0.5
POE51Q-33ED
POE51Q-50ED
POE51Q-12ED
POE51Q-24ED
POE51Q-48ED
51
51
51
51
51
26.7@ 10ꢀ
26.7@ 10ꢀ
22.2@ 10ꢀ
22.2@ 10ꢀ
22.2@ 10ꢀ
64
66
35
35
34
2
104
102
85
0.32
0.25
0.14
0.11
0.10
1 : 0.143 : 0.5
1 : 0.214 : 0.5
1 : 0.5 : 0.5
1 : 1 : 0.5
4.5
4.5
4.7
4.7
4.7
3.3 V, 14.1 A
4
5 V, 9.3 A
18
69
266
12 V, 3.9 A
24 V, 1.9 A
48 V, 0.97 A
85
85
1 : 2 : 0.5
1. Packaging: D = 13″ machine-ready reel. EIA-481 embossed plastic
tape (150 parts per full reel). Quantities less than full
reel available: in tape (not machine ready) or with
leader and trailer ($25 charge).
2. Inductance is for the primary, measured at 250 kHz, 0.5 Vrms, 0 Adc.
3. Leakage inductance is for the primary with the secondary and aux
windings shorted.
4. DC current at 25°C that causes an inductance drop of <15ꢀ
(POExx51Q) and <15ꢀ (POExx40Q) from its value without current.
5. Output is for the secondary. Output of the aux winding is 12 V, 30 mA.
6. Electrical specifications at 25°C.
Refer to Doc 362 “Soldering Surface Mount Components” before soldering.
Document 1468-1 Revised 05/31/22
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
© Coilcraft Inc. 2022
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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