PCA Flyback-PoE Transformers

Flyback-PoE

PCA supplies magnetics for the leading PoE chip manufactures such as Linear Tech, Maxim, and Texas Instruments and has developed magnetics that support all power levels of the IEEE 802.3 PoE standards, from "af" to "bt" level 4.

Designed for PoE applications from CCTV security cameras to access entry control systems, in a variety of topologies such as flyback, forward, gate drivers, common mode chokes and data transformers, our PoE family of transformers cover a wide range of input and output voltages, switching frequencies, and isolation voltages that meet IEEE standards.

PCA can also develop custom magnetics for unique power and voltage requirements. Anywhere Power over Ethernet is called for, PCA has the right magnetics for your design.

Power over Ethernet (PoE/PD) Powered Device Flyback Transformer
Used in SMPS DC/DC Converter as a Flyback Transformer in PoE/Powered Devices (PD) • Switching Frequency: 300 KHz to 400 KHz • 40% Duty Cycle Typ. @ 48 V Input • UL 94V-0 Recognized Components • UL 1446 Class B Insulation System • Low Core Loss Material • Add ?-LF? after part number for Lead Free

PCA Part No.	Topology	Geometry	Turns Ratio	Po	Lp	Vin	Aux	S1	Fsw	Controller	Chipset
			Pri : Aux : S1 : S2 : S3	Watts	uH	Min-Max			KHz	MFG	Part No.
EPC3248G-1 (-LF)	Flyback-PoE	ER14.5	1.000 : 0.100 : 0.400	0.0	120	36-57V	13.2V / 0.05A	3.3V / 3.92A	0	Power Integrations	DPA425
EPC3248G-10 (-LF)	Flyback-PoE	ER14.5	1.000 : 0.100 : 0.400	0.0	120	36-57V	13.2V / 0.05A	3.3V / 3.92A	0	Power Integrations	DPA424/5
EPC3248G-14 (-LF)	Flyback-PoE	EFD20	1.000 : 0.100 : 0.400	0.0	25	36-57V	13.2V / 0.05A	5.0V / 8.0A	0	Power Integrations	DPA426
EPC3248G-15 (-LF)	Flyback-PoE	EFD20	1.000 : 0.150 : 0.150	0.0	25	36-57V	12.0V / 0.05A	12.0V / 3.33A	0	Power Integrations	DPA426
EPC3248G-2 (-LF)	Flyback-PoE	ER14.5	1.000 : 0.150 : 0.400	0.0	120	36-57V	13.33V / 0.05A	5.0V / 2.59A	0	Power Integrations	DPA425
EPC3248G-3 (-LF)	Flyback-PoE	ER14.5	1.000 : 0.400 : 0.400	0.0	120	36-57V	12.0V / 0.05A	12.0V / 1.08A	0	Power Integrations	DPA425
EPC3248G-4 (-LF)	Flyback-PoE	ER9.5	1.000 : 0.100 : 0.400	0.0	200	36-57V	13.2V / 0.05A	3.3V / 1.16A	0	Power Integrations	DPA423
EPC3248G-5 (-LF)	Flyback-PoE	ER9.5	1.000 : 0.150 : 0.400	0.0	200	36-57V	13.33V / 0.05A	5.0V / 0.77A	0	Power Integrations	DPA423
EPC3248G-6 (-LF)	Flyback-PoE	ER9.5	1.000 : 0.371 : 0.371	0.0	200	36-57V	12.0V / 0.05A	12.0V / 0.32A	0	Power Integrations	DPA423
EPC3248G-7 (-LF)	Flyback-PoE	ER11	1.000 : 0.100 : 0.400	0.0	120	36-57V	13.2V / 0.05A	3.3V / 1.97A	0	Power Integrations	DPA424
EPC3248G-8 (-LF)	Flyback-PoE	ER11	1.000 : 0.156 : 0.406	0.0	120	36-57V	13.0V / 0.05A	5.0V / 1.30A	0	Power Integrations	DPA424
EPC3248G-9 (-LF)	Flyback-PoE	ER11	1.000 : 0.367 : 0.367	0.0	120	36-57V	12.0V / 0.05A	12.0V / 0.54A	0	Power Integrations	DPA424

Power over Ethernet Synchronus Flyback Transformer
Used in SMPS DC/DC Converter as a Flyback Transformer in PoE/Powered Devices (PD) • Add "-LF" after part number for Lead Free • UL 94V-0 Recognized Components • UL 1446 Class B Insulation System • Switching Frequency : 250 KHz • Low Core Loss Material

PCA Part No.	Topology	Geometry	Turns Ratio	Po	Lp	Vin	Aux	S1	Fsw	Controller	Chipset
			Pri : Aux : S1 : S2 : S3	Watts	uH	Min-Max			KHz	MFG	Part No.
EPC3356G-12-LF	Flyback-PoE	EP13	1.000 : 0.500 : 0.500	13.0	127	36-72V	12	12.0V / 1.08A	250
EPC3356G-3.3-LF	Flyback-PoE	EP13	1.000 : 0.500 : 0.166	13.0	127	36-72V	12	3.3V / 3.0A	250
EPC3356G-5-LF	Flyback-PoE	EP13	1.000 : 0.500 : 0.250	13.0	127	36-72V	12	5.0V / 2.6A	250

Power over Ethernet Flyback Transformer
45W PoE Applications • Designed to work with LT1725 • Used in Flyback Topology Converter • Bobbin: UL94V-0 Recognized Materials • Storage Temperature: -40°C to ±125°C • Operating Temperature: 0C to ±70°C • UL 1446 Class B Insulation System v Duty Cycle: 50% Max • Add "-LF" after part number for Lead Free

Buy	PDF	PCA Part No.	Topology	Geometry	Turns Ratio	Po	Lp	Vin	Aux	S1	S2	S3	Fsw	Controller	Chipset
					Pri : Aux : S1 : S2 : S3	Watts	uH	Min-Max					KHz	MFG	Part No.
		EPC3391G-LF	Flyback-PoE	EFD20	1.000 : 0.417 : 1.111	45.0	42	36 - 57V	15V / 0.01A	36V / 1.25A			0	Linear Technology	LT1725

Power over Ethernet Flyback Transformer
45W PoE Application • Designed to work with LT1725 • Used in Flyback Topology Converter • Bobbin: UL94V-0 Recognized Materials • UL 1446 Class B Insulation System • Duty Cycle: 50% Max. • Add "-LF" after part number for Lead Free

Buy	PDF	PCA Part No.	Topology	Geometry	Turns Ratio	Po	Lp	Vin	Aux	S1	S2	S3	Fsw	Controller	Chipset
					Pri : Aux : S1 : S2 : S3	Watts	uH	Min-Max					KHz	MFG	Part No.
		EPC3393G-LF	Flyback-PoE	EFD20	1.000 : 0.417 : 1.000	45.0	42	36 - 57V	15V / 0.01A	36V / 1.25A			200	Linear Technology	LT1725

Buy	PDF	PCA Part No.	Topology	Geometry	Turns Ratio	Po	Lp	Vin	Aux	S1	S2	S3	Fsw	Controller	Chipset
					Pri : Aux : S1 : S2 : S3	Watts	uH	Min-Max					KHz	MFG	Part No.
		EPC3394G-LF	Flyback-PoE	EFD25	1.000 : 0.417 : 1.000	45.0	42	36 - 57V	15V / 0.01A	36V / 1.25A			200	Linear Technology	LT1725

Power over Ethernet Synchronus Flyback Transformer
Designed to work with LT42691 Chip • Storage Temperature : -40°C to ±125°C • Operating Temperature : 0°C to ±70°C • Small Size and Cost Effective • Max. Duty Cycle : 42% • Lead Free

Buy	PDF	PCA Part No.	Topology	Geometry	Turns Ratio	Po	Lp	Vin	Aux	S1	S2	S3	Fsw	Controller	Chipset
					Pri : Aux : S1 : S2 : S3	Watts	uH	Min-Max					KHz	MFG	Part No.
		EPC3408G-LF	Flyback-PoE	EP13	1.670 : 1.000 : 0.250 : 0.250	25.0	38	36 - 57V	12V / 0.02A	3.3V / 7			250	Linear Technology	LT4276B,LTC4269-1

Power over Ethernet Synchronus Flyback Transformer
Designed to work with LT42691 Chip • Storage Temperature : -40°C to ±125°C • Operating Temperature : -40°C to ±85°C • Small Size and Cost Effective • Max. Duty Cycle : 42% • Lead Free

Buy	PDF	PCA Part No.	Topology	Geometry	Turns Ratio	Po	Lp	Vin	Aux	S1	S2	S3	Fsw	Controller	Chipset
					Pri : Aux : S1 : S2 : S3	Watts	uH	Min-Max					KHz	MFG	Part No.
		EPC3409G-LF	Flyback-PoE	EP13	2.000 : 1.000 : 0.400 : 0.400	25.0	39	36 - 57V	12V / 0.02A	5V / 5A			250	Linear Technology	LT4276B,LTC4269-1

Buy	PDF	PCA Part No.	Topology	Geometry	Turns Ratio	Po	Lp	Vin	Aux	S1	S2	S3	Fsw	Controller	Chipset
					Pri : Aux : S1 : S2 : S3	Watts	uH	Min-Max					KHz	MFG	Part No.
		EPC3410G-LF	Flyback-PoE	EP13	1.800 : 1.000 : 0.900	25.0	37	36 - 57V	12V / 0.02A	12V / 2A			250	Linear Technology	LT4276B,LTC4269-1

Power over Ethernet (PoE/PD) Flyback Transformer
25W PoE Applications • Designed to work with Linear's LTC4278 • Bobbin : UL94V-0 Recognized Materials • Storage Temperature : -40°C to ±125°C • Operating Temperature : 0°C to ±70°C • Class 130°C Insulation System • Duty Cycle : 62% Max • Switching Frequency : 250kHz • Add "-LF" after part number for Lead Free

Buy	PDF	PCA Part No.	Topology	Geometry	Turns Ratio	Po	Lp	Vin	Aux	S1	S2	S3	Fsw	Controller	Chipset
					Pri : Aux : S1 : S2 : S3	Watts	uH	Min-Max					KHz	MFG	Part No.
		EPC3472G-LF	Flyback-PoE	EFD20	1.000 : 0.750 : 0.375	25.0	9	9 - 57V	10V / 0.03A	5V / 5A			250	Linear Technology	LTC4278

Power over Ethernet (PoE/PD) Flyback Transformer
25W PoE Applications • Bobbin : UL94V-0 Recognized Materials • Storage Temperature : -40°C to ±125°C • Operating Temperature : 0°C to ±70°C • Class 130°C Insulation System • Duty Cycle : 62% Max. • Switching Frequency : 250kHz • Add "-LF" after part number for Lead Free

Buy	PDF	PCA Part No.	Topology	Geometry	Turns Ratio	Po	Lp	Vin	Aux	S1	S2	S3	Fsw	Controller	Chipset
					Pri : Aux : S1 : S2 : S3	Watts	uH	Min-Max					KHz	MFG	Part No.
		EPC3479G-LF	Flyback-PoE	EFD20	1.000 : 0.750 : 0.250	25.0	9	9 - 57V	10V / 0.03A	3.3V / 7.5A			250	Linear Technology	LTC4278

25W Power Over Ethernet (PoE/PD) Flyback Transformer
25W PoE Applications • Designed to work with Linear's LTC4278 • Bobbin : UL94V-0 Recognized Materials • Storage Temperature : -40°C to ±125°C • Operating Temperature : -40°C to ±85°C • Class 130°C Insulation System • Duty Cycle : 62% Max • Switching Frequency : 250kHz • Add "-LF" after part number for Lead Free

Buy	PDF	PCA Part No.	Topology	Geometry	Turns Ratio	Po	Lp	Vin	Aux	S1	S2	S3	Fsw	Controller	Chipset
					Pri : Aux : S1 : S2 : S3	Watts	uH	Min-Max					KHz	MFG	Part No.
		EPC3492G-LF	Flyback-PoE	EFD20	1.000 : 0.750 : 1.750	24.0	9	10 - 57V	10V / 0.03A	24V / 1A			250	Linear Technology	LTC4278

Power over Ethernet (PoE/PD) Flyback Transformer
• Designed to work with Linear's LTC4278 • Bobbin : UL94V-0 Recognized Materials • Storage Temperature : -40°C to ±125°C • Operating Temperature : -40°C to ±125°C • Class 155°C Insulation System • Duty Cycle : 62% Max. • Switching Frequency : 250kHz • Lead Free

Buy	PDF	PCA Part No.	Topology	Geometry	Turns Ratio	Po	Lp	Vin	Aux	S1	S2	S3	Fsw	Controller	Chipset
					Pri : Aux : S1 : S2 : S3	Watts	uH	Min-Max					KHz	MFG	Part No.
		EPC3508GE-LF	Flyback-PoE	EFD20	1.000 : 0.750 : 0.875	24.0	9	9 - 57V	10V / 0.03A	12V / 2A			250	Linear Technology	LTC4278

Power over Ethernet Synchronus Flyback Transformer
Designed to work with Linear Tech. LTC4278 • Bobbin : UL94V-0 Recognized Materials • Storage Temperature : -40°C to ±125°C • Operating Temperature : -40°C to ±85°C • Class 130° Insulation System • Duty Cycle : 62% Max. • Switching Frequency : 250kHz ? Lead Free

Buy	PDF	PCA Part No.	Topology	Geometry	Turns Ratio	Po	Lp	Vin	Aux	S1	S2	S3	Fsw	Controller	Chipset
					Pri : Aux : S1 : S2 : S3	Watts	uH	Min-Max					KHz	MFG	Part No.
		EPC3546G-LF	Flyback-PoE	EFD20	1.000 : 0.750 : 3.375	24.0	9	9V - 57V	10V / 0.03A	48V / 0.5A			250	Linear Technology	LTC4278

Power over Ethernet Flyback Transformer
Designed to work with LT42691 Chip • Storage Temperature : -40°C to ±125°C • Operating Temperature : -40°C to ±125°C • Small Size and Cost Effective • Lead Free

Buy	PDF	PCA Part No.	Topology	Geometry	Turns Ratio	Po	Lp	Vin	Aux	S1	S2	S3	Fsw	Controller	Chipset
					Pri : Aux : S1 : S2 : S3	Watts	uH	Min-Max					KHz	MFG	Part No.
		EPC3575G-LF	Flyback-PoE	EP13	7.330 : 2.330 : 1.000	40.0	35	36 - 57V	12V / 0.20A	5V / 8A			0	Linear Technology	LT4269-1

Power over Ethernet Flyback Transformer
PoE Synchronous Forward Transformer • Designed to work with LT4276A • Storage Temperature : -40°C to ±125°C • Operating Temperature : -40°C to ±125°C • Class 130°C Insulation System • Duty Cycle : 55% Max. • Switching Frequency : 250kHz • Lead free

Buy	PDF	PCA Part No.	Topology	Geometry	Turns Ratio	Po	Lp	Vin	Aux	S1	S2	S3	Fsw	Controller	Chipset
					Pri : Aux : S1 : S2 : S3	Watts	uH	Min-Max					KHz	MFG	Part No.
		EPC3586G-LF	Flyback-PoE	EP13	1.800 : 1.000 : 0.400 : 0.400	35.0	26	48 - 57V	12V / 0.01A	5V / 7A			250	Linear Technology	LT4276B,LTC4269-1

25W Power over Ethernet (PoE/PD) Flyback Transformer
Designed to Work with Linear's LTC4278 • Bobbin : UL94V-0 Recognized Materials • Storage Temperature : -40°C to ±125°C °Operating Temperature : -40°C to ±125°C • Class 130°C Insulation System • Duty Cycle : 55% Max. • Switching Frequency : 250kHz • Add ?-LF? after part number for Lead Free

Buy	PDF	PCA Part No.	Topology	Geometry	Turns Ratio	Po	Lp	Vin	Aux	S1	S2	S3	Fsw	Controller	Chipset
					Pri : Aux : S1 : S2 : S3	Watts	uH	Min-Max					KHz	MFG	Part No.
		EPC3601G-LF	Flyback-PoE	EFFD20	1.000 : 1.000 : 1.125	25.0	9	9 - 57V	10V / 0.03A	12V / 2A			250	Linear Technology	LT4276,LT4295,LTC4278

Power over Ethernet Synchronus Flyback Transformer
Designed to work with LTC4269-1 and LT4276B • Switching Ipeak: 7A • Operating Temperature: -40°C to ±125°C • Storage Temperature: -40°C to ±85°C • Small Size and Cost Effective • Duty Cycle: 42% Max. • Lead free

Buy	PDF	PCA Part No.	Topology	Geometry	Turns Ratio	Po	Lp	Vin	Aux	S1	S2	S3	Fsw	Controller	Chipset
					Pri : Aux : S1 : S2 : S3	Watts	uH	Min-Max					KHz	MFG	Part No.
		EPC3603G-LF	Flyback-PoE	EP13	1.800 : 1.000 : 1.800 : 1.800	25.0	37	40 - 57V	12.5V / 0.01A	24V / 1A			250	Linear Technology	LT4276B,LTC4269-1

96W Power over Ethernet (PoE/PD) Flyback Transformer
25W PoE Applications • Bobbin : UL94V-0 Recognized Materials • Storage Temperature : -40°C to ±125°C • Operating Temperature : -40°C to ±85°Cv • Class 130°C Insulation System • Switching Frequency : 250kHz • ROHS Compliant • Lead Free

Buy	PDF	PCA Part No.	Topology	Geometry	Turns Ratio	Po	Lp	Vin	Aux	S1	S2	S3	Fsw	Controller	Chipset
					Pri : Aux : S1 : S2 : S3	Watts	uH	Min-Max					KHz	MFG	Part No.
		EPC3625G-LF	Flyback-PoE	EFD25	8.000 : 3.000 : 4.000 : 4.000	96.0	13	40 - 57V	9V / 0.03A	12V / 4A	12V / 4A		250	Linear Technology	LT4295

84W Power over Ethernet (PoE/PD) Flyback Transformer
Designed to work with LTC4295 • 84W PoE Applications • Storage Temperature: -40°C to ±125°C • Operating Temperature: -40°C to ±125°Cv • Class 130°C Insulation System • Switching Frequency:250kHz • ROHS Compliant • Lead Free

Buy	PDF	PCA Part No.	Topology	Geometry	Turns Ratio	Po	Lp	Vin	Aux	S1	S2	S3	Fsw	Controller	Chipset
					Pri : Aux : S1 : S2 : S3	Watts	uH	Min-Max					KHz	MFG	Part No.
		EPC3630G-LF	Flyback-PoE	EFD25	8.000 : 8:000 : 3.000	84.0	15	40 - 57V	9V / 0.03A	24V / 3.5A			250	Linear Technology	LT4295

Power Over Ethernet Flyback Transformer
Designed to work with LTC4295 • Bobbin : UL94V-0 Recognized Materials • Storage Temperature : -40°C to ±125°C • Operating Temperature : -40°C to ±125°C • Switching Frequency: 250 KHz • Lead free

Buy	PDF	PCA Part No.	Topology	Geometry	Turns Ratio	Po	Lp	Vin	Aux	S1	S2	S3	Fsw	Controller	Chipset
					Pri : Aux : S1 : S2 : S3	Watts	uH	Min-Max					KHz	MFG	Part No.
		EPC3633G-LF	Flyback-PoE	EFD20	1.000 : 0.500 : 0.500	48.0	18	41 - 57V	12V / 0.03A	12V / 4A			250	Linear Technology	LT4295

Power Over Ethernet Synchronus Flyback Transformer
Storage Temperature : -40°C to ±125°C • Operating Temperature : -40°C to ±85°C • Small Size and Cost Effective

Buy	PDF	PCA Part No.	Topology	Geometry	Turns Ratio	Po	Lp	Vin	Aux	S1	S2	S3	Fsw	Controller	Chipset
					Pri : Aux : S1 : S2 : S3	Watts	uH	Min-Max					KHz	MFG	Part No.
		EPC3634AG-LF	Flyback-PoE	EP13	1.000 : 0.500 : 0.440	36.0	26	42 - 57V	12V / 0.01A	12V / 3A			250	Linear Technology	LT4295

Power over Ethernet Synchronus Flyback Transformer
UL 94V-0 Recognized Materials • UL 1446 Class F Insulation System Storage Temperature : -40°C to ±125°C • Operating Temperature : -40°C to ±125°C

Buy	PDF	PCA Part No.	Topology	Geometry	Turns Ratio	Po	Lp	Vin	Aux	S1	S2	S3	Fsw	Controller	Chipset
					Pri : Aux : S1 : S2 : S3	Watts	uH	Min-Max					KHz	MFG	Part No.
		EPC3678GE-LF	Flyback-PoE	EFD20	1.000 : 0.104: 0.047 : 0.047	9.9	221	36 - 72V	N/A	1.8V / 2.5A	2.5V / 1.5A	3.3V / 0.05A	200	Linear Technology	LTC4267

PoE Power Transformer
UL 94V-0 Recognized Materials • UL 1446 Class F Insulation System • Storage Temperature : -40°C to ±125°C • Operating Temperature : -40°C to ±125°C

Buy	PDF	PCA Part No.	Topology	Geometry	Turns Ratio	Po	Lp	Vin	Aux	S1	S2	S3	Fsw	Controller	Chipset
					Pri : Aux : S1 : S2 : S3	Watts	uH	Min-Max					KHz	MFG	Part No.
		EPC3680G-LF	Flyback-PoE	EP10	1.000 : 0.208 : 0.083	7.0	253	33 - 57V	8V / 0.02A	3.3V / 2A			200	Linear Technology	LT4267

PoE Power Transformer
UL 94V-0 Recognized Materials • UL 1446 Class F Insulation System • Storage Temperature : -40°C to ±125°C • Operating Temperature : -40°C to ±125°C

Buy	PDF	PCA Part No.	Topology	Geometry	Turns Ratio	Po	Lp	Vin	Aux	S1	S2	S3	Fsw	Controller	Chipset
					Pri : Aux : S1 : S2 : S3	Watts	uH	Min-Max					KHz	MFG	Part No.
		EPC3681G-LF	Flyback-PoE	EP13	1.000 : 0.208 : 0.083	13.5	127	33 - 57	8V / 0.02A	3.3V / 4A			200	Linear Technology	LT4267

Power over Ethernet Flyback Transformer
Storage Temperature : -40°C to ±125°C • Operating Temperature : -40°C to ±125°C • Small Size and Cost Effective • 1.8A Saturation Current • Lead Free

Buy	PDF	PCA Part No.	Topology	Geometry	Turns Ratio	Po	Lp	Vin	Aux	S1	S2	S3	Fsw	Controller	Chipset
					Pri : Aux : S1 : S2 : S3	Watts	uH	Min-Max					KHz	MFG	Part No.
		EPC3683GE-LF	Flyback-PoE	EP7	4.000 : 2.500 : 1.000	11.5	44	36 - 57	12	5.0V / 2.3A			250	Linear Technology	LT4276,LT4295

Power over Ethernet (PoE Forward) Flyback Transformer
Designed to work with Maxim MAX5974A • Storage Temperature : -40 °C to ±125 °C • Operating Temperature : -40 °C to ±85 °C • Small Size and Cost Effective •Lead Free

Buy	PDF	PCA Part No.	Topology	Geometry	Turns Ratio	Po	Lp	Vin	Aux	S1	S2	S3	Fsw	Controller	Chipset
					Pri : Aux : S1 : S2 : S3	Watts	uH	Min-Max					KHz	MFG	Part No.
		EPC3702G-LF	Forward	EP13	3.600 : 2.400 : 1.000	25.0	96	33 - 57V	12V / 0.02A	5V / 5A	N/A	N/A	275	Maxim Integrated	MAX5974A

15W Power Over Ethernet (PoE/PD) Flyback Transformer
Designed to work with Linear Technology LT3748 • Storage Temperature : -40 °C to ±125 °C • Operating Temperature : -40 °C to ±125 °C • Small Size and Cost Effective • Switching Frequency: 100 kHz • Ipeak: 8 A • Lead Free

Buy	PDF	PCA Part No.	Topology	Geometry	Turns Ratio	Po	Lp	Vin	Aux	S1	S2	S3	Fsw	Controller	Chipset
					Pri : Aux : S1 : S2 : S3	Watts	uH	Min-Max					KHz	MFG	Part No.
		EPC3921G-LF	Flyback	EP13	1.500 : 0.500 : 1.000	15.0	9	10- 40V	8V / 0.02A	15V / 1A	N/A	N/A	100	Linear Technology	LT3748

Flyback-PoE

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