Coilcraft High PoE Flyback Transformers
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High Power Flyback Transformers for
Power over Ethernet

  • Developed for Flyback PoE DC/DC Powered Devices (PD) power converters up to 51 W
  • Designed to meet IEEE802.3bt standard and operates with 36 – 57 V input
  • Perfect solution for high power PoE applications including Smart Building and IoT
  • 250 kHz switching frequency
  • 1500 Vrms, 1 minute isolation (hipot) between primary and auxillary and auxillary to secondary
  • RoHS-compliant, halogen free. 260°C compatible. Tin-silver-copper over tin over nickel over phos bronze terminations

SPECIFICATIONS


Part number1
Click to get parts
Power
(W)
Inductance2
at 0 A(µH)
DCR (Ohms) Leakage3
inductance
max (µH)
Turns ratio Isat4
(A)
Output5
pri sec aux pri : sec : aux
POE40Q-33ED 40 33.3 @±15% 64 2 104 0.32 1 : 0.143 : 0.5 3.5 3.3 V, 11 A
POE40Q-50ED 40 33.3 @±15% 66 4 102 0.25 1 : 0.214 : 0.5 3.5 5 V, 7.3 A
POE40Q-12ED 40 27.8 @±15% 35 18 85 0.14 1 : 0.5 : 0.5 3.7 12 V, 3 A
POE40Q-24ED 40 27.8 @±15% 35 69 85 0.14 1 : 1 : 0.5 3.7 24 V, 1.5 A
POE40Q-48ED 40 27.8 @±15% 34 266 85 0.13 1 : 2 : 0.5 3.7 48 V, 0.76 A
POE51Q-33ED 51 26.7 @±10% 64 2 104 0.32 1 : 0.143 : 0.5 4.5 3.3  V, 14.1  A
POE51Q-50ED 51 26.7 @±10% 66 4 102 0.25 1 : 0.214 : 0.5 4.5 5 V, 9.3 A
POE51Q-12ED 51 22.2 @±10% 35 18 85 0.14 1 : 0.5 : 0.5 4.7 12 V, 3.9 A
POE51Q-24ED 51 22.2 @±10% 35 69 85 0.11 1 : 1 : 0.5 4.7 24 V, 1.9 A
POE51Q-48ED 51 22.2 @±10% 34 266 85 0.10 1 : 2 : 0.5 4.7 48 V, 0.97 A
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 <15% (POExx51Q) and <15% (POExx40Q) from its value without current.
5 Output is for the secondary. Output of the aux winding is 12 V, 30 mA.
6 Ambient temperature range: −40°C to +125°C
7 Storage temperature range: Component: −40°C to +165°C
Tape and reel packaging: −40°C to +80°C
8 Resistance to soldering heat: Three reflows at >217°C for 90 seconds (+260°C ±5°C for 20 – 40 seconds), allowing parts to cool to room temperature between.
9 Electrical specifications at 25°C.
Refer to Soldering Coilcraft Components before soldering.
PCB washing: Tested to MIL-STD-202 Method 215 plus an additional aqueous wash. More info.

Your comments and suggestions are welcome. Contact [email protected]
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Updated: November 06, 2019