The jump from 800G to 1.6T does not change the OSFP form factor — it just packs far more power and signaling into it. Module designers are now budgeting north of 30 W per port inside a cage that still has to hot-swap into a live system without disturbing its neighbors. That puts two analog problems front and center: inrush control and high-speed-line ESD.
Hot-swap without the glitch
At 1.6T power levels, plugging a module into a powered line card draws an inrush spike that can sag the rail for every other port on the card. An on-module eFuse with programmable current limit and controlled dV/dt ramps the supply in cleanly, then stays in circuit as the always-on overcurrent and overvoltage guard.
ESD that does not cost bandwidth
The electrical interface and the management sideband both need ESD protection, but 1.6T lanes cannot tolerate the capacitance a generic diode adds. Ultra-low-capacitance TVS arrays — well under a picofarad per line — protect the high-speed pairs without rounding off the edges, while a separate array handles the slower control bus.
Magnias is sampling both functions in packages sized for the cramped OSFP paddle card. Talk to your FAE about a reference protection layout for your 1.6T design.