WHSQ48002G Dual Ports SMD 2.5G/5G PIN48 LAN Transformer
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Two. The 48 pins of the WHSQ48002G contain eight 1CT:1CT coils forming four magnetic channels, two per Ethernet port, so one package covers two 2.5G/5G ports.The usual reason to choose it over two single-port parts is panel density, since a single package concentrates both the board area and the routing.
Note that the WHSQ48002G uses a 1.02 mm lead pitch, which differs from the 1.00 mm pitch of the 24-pin single-port parts in this range, so the footprint cannot simply be reused. Other options are listed in the2.5G/5G BASE-T range.
No. The datasheet assigns no DC balance current capability to the centre taps of the WHSQ48002G, so the part does not support PoE.Terminate the centre taps as the reference design for the target PHY requires.
Where both ports have to deliver power, send VOOHU the target PoE wattage, the steady current expected in each centre-tap path, the temperature range and the footprint constraint, and VOOHU will re-select against those requirements.
Three figures separate the WHSQ48002G from the 24-pin parts in this range: a maximum height of 7.50 mm, a lead pitch of 1.02 mm and 350 pieces per reel.The single-port parts stand 4.00 mm tall and ship 800 pieces per reel, so both the enclosure clearance and the reel-change interval have to be recalculated.
Coplanarity for the WHSQ48002G is specified as 0.10 mm across the 48 soldering surfaces, and the part is MSL level 1, so no pre-bake is required under normal storage.
