WHSG24705N0 Single Port SMD 100/1000 BASE-T PIN24 non-PoE LAN Transformer
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The WHSG24705N0 sits in the largest common-footprint group in this product line — a 24-pin surface-mount package with a 17.55 × 12.20 mm body on a 1.27 mm pitch.
Several parts in the100/1000 BASE-T rangeshare one recommended land pattern, so a single board can move between capability grades. A shared land pattern is not the same as interchangeability, though — some parts differ in internal element count and others in pin assignment, so check pin by pin against the target part's own drawing.
Electrical ratings match value for value; the packages are entirely different and their land patterns do not interchange. The WHSG24705N0 is 17.55 × 12.20 mm on a 1.27 mm pitch, 6.00 mm high; theWHSG24R05N0is 15.10 × 7.10 mm on a 1.00 mm pitch, 8.25 mm high.
Inductance, DC resistance, turns ratio, insertion and return loss, cross talk, common-mode rejection, isolation and temperature grade are the same on both, so the choice comes down to the shape and clearance the PCB can give — invisible in the parameter table, obvious on the drawings.
By pin number: pins 1–12 are one side and pins 13–24 the other, with every three pins forming one channel and four groups making one Gigabit port.
The WHSG24705N0 drawing labels pin numbers only, without net names or Chip Side / Cable Side markings, so orientation follows the target PHY's reference design and where the RJ45 actually sits on the board. Do not infer it from another part's net-name table — naming is not uniform even within one package family in the100/1000 BASE-T range.
