Transformer core is a magnetic component used in Ethernet magnetics for signal isolation and impedance matching in network communication equipment.
| Parameter | Typical range | Notes & selection driver |
|---|---|---|
| Inductance | 350-600 μH | |
| Return Loss | >20 dB | |
| DC Resistance | 0.5-2.0 Ω | |
| Insertion Loss | <1.0 dB at 100 MHz | |
| Frequency Range | 1-100 MHz | |
| Isolation Voltage | 1500 Vrms minimum | |
| Common Mode Rejection | >25 dB at 100 MHz | |
| Operating Temperature | -40°C to +85°C |
Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.
This component is used in the following industrial products
Passive electronic component that provides electrical isolation, signal conditioning, and EMI filtering for Ethernet interfaces
Core electrical circuit within a Power Source Unit that transforms and inverts electrical power
An electronic component that provides electrical isolation between circuits while allowing signal or power transfer.
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The transformer core provides electrical isolation between network equipment and cables, matches impedance for optimal signal transfer, suppresses electromagnetic interference (EMI), and enables Power over Ethernet (PoE) functionality while protecting sensitive electronics.
Ferrite materials offer high magnetic permeability at Ethernet frequencies (1-100 MHz), low core losses, excellent EMI suppression characteristics, and stable temperature performance, making them ideal for high-frequency signal isolation applications.
Proper transformer core design minimizes insertion loss, maintains signal integrity through impedance matching, provides effective common-mode noise rejection, and ensures compliance with IEEE 802.3 standards for reliable data transmission.
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