WHD20805G 10/100BASE-TX LAN Transformer

No. Pitch and span do match at 2.00 mm and 18.00 mm, but the WHD20805G places its two hole rows 10.16 mm apart where the others use 7.62 mm — a full 2.54 mm difference.

The body is wider too, 12.50 mm against 10.00 mm. This is the easiest trap in the group: the Pitch field reads 2.0mm on all three product pages and the span is the same, so the spec table cannot separate them and the drawing's row spacing has to be checked.

A 21.20 × 12.50 mm body, 7.20 mm Max high.

The hole pattern is 2.00 mm pitch with an 18.00 mm span and 10.16 mm row spacing; leads are 3.00 mm and the recommended hole is ø0.90 mm. Against the other 2.00 mm-pitch parts in the 10/100 BASE-T range the WHD20805G is the same length but 2.5 mm wider, and all of that width sits between the two hole rows. That strip can carry routing or vias; but a layout drawn for 7.62 mm row spacing has no room for it, and the hole pattern has to be redrawn.

Four 1CT:1CT units, split between two ports at two channels — one pairset — each.

The WHD20805G is a dual-port 100M device, one part serving two RJ45s. A dual-port Gigabit part holds eight units, four channels or two pairsets per port, twice as many. Read the data rate first, then divide by port count — a dual-port device with four units is necessarily 100M, never Gigabit.