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Introduction
Specifications
Environmental
Performance curves
Schematics
Physical characteristics
Tape & Reel
Soldering/Washing

Datasheet 3D Models

POExxQ 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
AEC-Q200 Grade 1 (-40°C to +125°C)

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Count	Unit price
1	$3.31
150	$3.23
300	$2.94
600	$2.68
1200	$2.23
2400	$2.03
5000	$1.85

For high volume or non-stock items, request a quote.

Termination

E = Tin-silver-copper over tin over nickel

Packaging

D = 13" machine-ready reel

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Specifications

Electrical specifications at 25°C.

Part number (Hover for schematics)	Power (W)	Inductance at 0A (µH) 1	Tolerance (%)	Isat (A) 2	DCR max (mΩ)			Leakage Inductance max (µH) 3	Turns Ratio	Isolation Voltage (Vrms) 4	Secondary Output (V, A) 5
Part number (Hover for schematics)	Power (W)	Inductance at 0A (µH) 1	Tolerance (%)	Isat (A) 2	Pri	Sec	Aux	Leakage Inductance max (µH) 3	Pri : Sec : Aux	Isolation Voltage (Vrms) 4	Secondary Output (V, A) 5
POE40Q-33E_	40	33.3	15	3.5	64.0	2.0	104	0.32	1 : 0.143 : 0.5	1500	3.3 V , 11 A
POE40Q-50E_	40	33.3	15	3.5	66.0	4.0	102	0.25	1 : 0.214 : 0.5	1500	5 V , 7.3 A
POE40Q-12E_	40	27.8	15	3.7	35.0	18.0	85.0	0.14	1 : 0.5 : 0.5	1500	12 V , 3 A
POE40Q-24E_	40	27.8	15	3.7	35.0	69.0	85.0	0.14	1 : 1 : 0.5	1500	24 V , 1.5 A
POE40Q-48E_	40	27.8	15	3.7	34.0	266	85.0	0.13	1 : 2 : 0.5	1500	48 V , 0.76 A
POE51Q-33E_	51	26.7	10	4.5	64.0	2.0	104	0.32	1 : 0.143 : 0.5	1500	3.3 V , 14.1 A
POE51Q-50E_	51	26.7	10	4.5	66.0	4.0	102	0.25	1 : 0.214 : 0.5	1500	5 V , 9.3 A
POE51Q-12E_	51	22.2	10	4.7	35.0	18.0	85.0	0.14	1 : 0.5 : 0.5	1500	12 V , 3.9 A
POE51Q-24E_	51	22.2	10	4.7	35.0	69.0	85.0	0.11	1 : 1 : 0.5	1500	24 V , 1.9 A
POE51Q-48E_	51	22.2	10	4.7	34.0	266	85.0	0.10	1 : 2 : 0.5	1500	48 V , 0.97 A

Notes

Inductance is for the primary, measured at 250 kHz, 0.5 Vrms, 0 Adc.
DC current at 25°C that causes an inductance drop of <15% (POExx51Q) and <15% (POExx40Q) from its value without current.
Leakage inductance is for the primary with the secondary and aux windings shorted.
1500 Vrms, 1 minute isolation (hipot) between primary and auxillary and auxillary to secondary.
Output is for the secondary. Output of the aux winding is 12 V, 30 mA.

Termination:

RoHS-compliant, halogen free. 260°C compatible. Tin-silver-copper over tin over nickel over phos bronze terminations.

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).

Environmental

Environmental:

RoHS compliant , halogen free

Ambient temperature range:

–40°C to +125°C

Storage temperature range:

Component: –40°C to +165°C
Tape and reel packaging: –40°C to +80°C

Maximum part temperature:

+165°C (Ambient + temp rise)

Failures in Time (FIT) / Mean Time Between Failures (MTBF):

See FIT/MTBF Calculations

Performance curves

Inductance vs Current

Schematics

Physical characteristics

Tape and Reel specification

Parts per reel	Reel dimensions (mm)					Tape dimensions (mm)						Orientation
13" (330 mm)	A	B	C	D	E	W	P	Po	P1	H	T
150	330	100	13	50,4	44,4	44	28	4	2	14,6	0,5

General specification

Core Material:

Ferrite

Weight:

6.5 – 8 g

Soldering/Washing

Moisture Sensitivity Level (MSL):

1 (unlimited floor life at <30°C / 85% relative humidity)

Resistance to soldering heat:

Max three 40 second reflows at +260°C, parts cooled to room temperature between cycles

Refer to Soldering Coilcraft Components before soldering.

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POExxQ High Power Flyback Transformers

for Power over Ethernet

Selected configuration not available

Specifications

Termination:

Packaging:

Performance curves

Inductance vs Current

Schematics

Physical characteristics

Tape and Reel specification

General specification

Soldering/Washing

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Warning