LAN magnetic modules (Ethernet transformers) are the essential isolation and impedance-matching component on every RJ45 Ethernet port — providing 1500V isolation, common-mode rejection, and EMI suppression for 10BASE-T, 100BASE-TX, and 1000BASE-T connections in switches, routers, NICs, PLCs, and industrial Ethernet devices. Our LAN magnetics inventory covers integrated RJ45 connectors with built-in magnetics, discrete LAN transformers, and PoE (Power over Ethernet) integrated transformers from Bel Fuse (BEL MagJack series), Pulse Electronics (WJ series), Halo Electronics (TD series), Würth Elektronik (WE-MPoE), and TDK (ALT series) — supporting 10/100Mbps, 1Gbps, and 2.5Gbps Ethernet speeds, with and without LED indicators and with 802.3af/at/bt PoE ratings up to 90W.
High-speed 2.5Gbps and 5Gbps automotive Ethernet magnetics (1000BASE-T1, 100BASE-T1) for ADAS and infotainment systems face persistent allocation. Welllinkchips stocks standard LAN magnetic modules and can source discontinued or hard-to-find configurations for legacy networking equipment repair.
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