WHSQ48002P1 2.5G/5GBASE-T PoE+ LAN Transformer

On the WHSQ48002P1, 360 mA is the DC balance current of each magnetic channel and 720 mA is the total for one Ethernet port, which the datasheet calls full channels. The WHSQ48002P1 is a dual-port device whose two ports are independent and each counted at 720 mA, so that total is not a device-level limit and is not multiplied by the channel count.

Size the copper against 360 mA in each centre-tap path, and take 720 mA into the port-level thermal budget. The stated PoE Support 30W corresponds to the PoE+ class. Other parts in this class are listed in the 2.5G/5G BASE-T range.

At 100 kHz and 0.1 V – the datasheet states no DC bias for the OCL of the WHSQ48002P1. The 150 μH minimum is therefore an unbiased limit, and it cannot be read as a guaranteed inductance while the centre taps are carrying PoE current.

The WHSQ48002-1PG and the WHSQ48004-1PG in the same package print OCL as 200 μH minimum with a 14 mA DC bias, which is a different measurement condition, so the two sets of figures are not comparable. Where a review needs biased inductance data for the WHSQ48002P1, ask VOOHU for the measured records rather than substituting a figure from another part.

The WHSQ48002P1 and the WHSQ48002-1PG land on the same pads but are not electrically interchangeable: they share a 27.80 mm × 12.20 mm body, the same lead pitch and span and the same pin names in the same order, but differ in operating temperature and in PoE current. Temperature is the first difference: the WHSQ48002P1 runs from -40 °C to +85 °C with the rise included, where the WHSQ48002-1PG is specified from 0 °C to +70 °C.

Current is the second: 360 mA per channel on the WHSQ48002P1 against 1000 mA on the WHSQ48002-1PG, at stated ratings of 30 W and 50 W. A shared footprint is not evidence of interchangeability.