Mag45 RJ45 Jack with Integrated Magnetics — 10/100 Base-T
The TE Connectivity 6-6605786-1 is a 1-port RJ45 jack from the Mag45 series, purpose-built for 10/100 Base-T Ethernet with AutoMDIX support. It integrates the magnetics and decoupling capacitance directly into the connector body — no external transformer or common-mode choke needed on the PCB. The shielded shell with EMI finger provides a low-impedance path to chassis ground, reducing radiated emissions at the I/O port. Dual green LEDs indicate link and activity status. The 0.555" (14.10mm) height above board is a standard profile for panel-mount RJ45 jacks in 1U equipment.
Key Specifications for 10/100 Base-T
Rated for 10/100 Base-T operation with AutoMDIX, the jack handles automatic crossover detection and correction — no need for crossover cables or manual MDI/MDIX switching. The integrated magnetics include the transformer and common-mode choke for the 6 cores per jack, covering the full signal path for 10/100 Mbps. Operating temperature range is 0°C to 70°C, suitable for indoor commercial and industrial equipment. The housing is PET/polyester with UL94 V-0 flame rating (implied by the material class).
Mechanical Fit and Board Layout
The 90° right-angle orientation places the RJ45 port parallel to the PCB, allowing the connector to sit flush with the panel edge. The 0.555" (14.10mm) height above board is a standard dimension for 1U rack-mount equipment; verify the enclosure cutout and panel thickness to ensure the tab direction (up) aligns with the cable exit. The through-hole solder termination requires plated through-holes in the PCB footprint — no SMT reflow profile needed.