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EFD20 Power over Ethernet Transformer for PoE Network Power and Data Transmission

Characteristics:

This flyback transformer, engineered for PoE PD applications, features a 36–57 V input voltage range, supports 200–500 kHz switching frequencies, operates reliably across –40 °C to +125 °C, delivers 1.5 kVAC isolation for 1 minute, and offers multiple output options.

Options:
· PoE PDs flyback design, 36–57V input
· 200–500kHz switching frequency
· –40ºC to +125ºC operating temp, 1.5kVAC/1min isolation
· Various output powers/voltages, for IP phones, WLAN APs, security cameras & access control

Common Applications:

· PoE powered devices
· IP telephony systems
· Wireless LAN access points
· Access control and entry terminals
· Video surveillance cameras

FAQ：
Q：When applying for samples, do I need to provide corporate qualifications or explain the purpose of the samples?
A：You only need to briefly explain the purpose of the samples (e.g., "for smart home controller R&D" or "for new energy vehicle component testing"), and no additional complex corporate qualifications are required. If you are an end-equipment manufacturer or R&D institution, you can also inform us of the product application scenario, and our engineers can recommend more suitable sample models for you to further shorten the testing cycle.

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Product Description

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Product Overview

The EFD20 Power over Ethernet Transformer is designed for PoE communication systems requiring stable power transmission, reliable signal integrity, and compact high-frequency magnetic integration. Its EFD20 ferrite core structure enables efficient Ethernet power delivery and electrical isolation in modern networking equipment.

Optimized for Power over Ethernet architectures, the transformer supports simultaneous data communication and DC power transfer through standard Ethernet cabling, helping simplify network infrastructure and improve installation efficiency.

The compact low-profile magnetic platform makes the EFD20 series suitable for networking applications where PCB space utilization, thermal stability, and continuous communication performance are critical.

Customized turns ratios, insulation specifications, winding structures, and terminal configurations are available according to customer requirements.

Key Features

EFD20 ferrite magnetic structure
Designed for PoE communication systems
Stable power and signal transmission
Reliable electrical isolation capability
Compact low-profile configuration
Suitable for high-frequency Ethernet operation
Optimized PCB space utilization
Flexible customization support

Typical Applications

PoE Ethernet Switches
IP Surveillance Cameras
Wireless Access Points
Smart Building Infrastructure
Industrial Network Equipment
IoT Communication Devices
Network Routers and Gateways

Physical Properties

Order Code	VIN	Vout1 (V)	lout1 (A)	Vout2 (V)	lout2 (A)	Vout3 (V)	lout3 (A)	L (μH)	n	VT(V(AC))
INF-EFD20-14μH	9-60V(DC)	12	2	-	-	-	-	14	1.33:1:1	1500
INF-EFD20-28μH	20-72V(DC)	5	4	-	-	-	-	28	3.5:1:275	1500
INF-EFD20-9μH	9-57V(DC)	12	2	-	-	-	-	9	1:1.12:1	1500

Technical Specifications

屏幕截图 2025-10-31 164553

Customization & Procurement

Main Category	Subcategory	Details
MOQ	Prototyping & Small-batch	10 piece minimum order
	Sample Service	Free proofing & custom service, 5 free samples (shipping at buyer’s cost)
	Bulk Order	5,000 pieces and above with bulk pricing
Lead Time	All Standard Components	Shipped within 5–7 working days
	Custom Inductance / Pin Design (Sample)	Sample order confirmed within 5–7 working days
	Custom Inductance / Pin Design (Mass Order)	Shipped within 15–30 working days
Payment Terms	Main Payment Term	T/T in advance, L/C at sight
	Procurement Standard	Complies with global enterprise procurement standard for passive components
	Quality Deposit	No quality security deposit required
	Accepted Terms	FOB Shanghai / Nanjing / Hong Kong, T/T Advance
Quality Assurance	Manufacturing Defects	Free replacement for issues caused by manufacturing defects
Quality Assurance	Inspection Report	Batch inspection reports available as certification upon customer request
Packaging Specifications	Updated Packaging (2026)	Blister tray packaging; Sealed Tape & Reel for SMD products
Packaging Specifications	Optional Packaging	Vacuum sealed packaging for customers with strict moisture-proof requirements