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Per magnetic channel. The datasheet for the WHSM30101-2PG states PoE Support 60W with 1200 mA of DC balance current per channel, and gives no full-channels total.That means the port total cannot be obtained by multiplying 1200 mA by the number of channels; the figure simply is not in the current document.
Size balanced copper paths against 1200 mA each, taking the width from your actual copper thickness and permitted rise. If the project needs a controlled port total for its power budget, ask us for it before committing the design.
Not as a drop-in. The WHSM30101-2PG comes in a 30-pin package, so its pin count and land pattern differ from the 24-pin parts that make up most of this speed class, and changing to it is a board revision rather than a second source.The 10G electrical block is largely common across the range, so the differential signalling design usually carries over; the footprint, routing and centre-tap return paths do not.
Check the pads against the current WHSM30101-2PG package drawing before release, not against another part's drawing.
The WHSM30101-2PG suits indoor 10G powered ports where the component temperature stays between 0 °C and +70 °C.Typical uses are powered ports on enterprise switches, access points and network cameras, and 10G power-sourcing boards inside racks. Budget the port against 1200 mA per magnetic channel, as the datasheet publishes no full-channels total.
The -40 °C to +85 °C storage range of the WHSM30101-2PG is what the part survives unpowered and cannot be used as an operating condition; for powered operation below 0 °C, move to a wide-temperature part in the10G BASE-T range.