WHD20601TG 10/100BASE-TX LAN Transformer

Yes, and it is a complete drop-in. The WHD20601TG matches the standard part value for value on body, height, pitch, span, row spacing, lead length and hole diameter; both hold four 1CT:1CT units in two groups, and all twenty pins have been checked as identically assigned.

Only the temperature grade differs from the standard part. Neither the PCB nor the termination network changes; only the cold start-up verification has to be repeated at the wider grade.

Where the transformer's own location powers up below 0 °C, or runs above +70 °C for long stretches.

The deciding figure is the temperature at the part's location, not the cabinet or room ambient. Dual 100M port equipment tends to be industrial switches, DIN-rail gateways and outdoor acquisition units — positions with neither air conditioning nor forced cooling, where two active ports also concentrate more heat on the board. Such cases call for the WHD20601TG rather than derating a standard-temperature part.

In tubes, 20 pieces per tube and 320 tubes to a carton for 6400 pieces, on a 532 mm tube.

The WHD20601TG is a through-hole part assembled by wave soldering, with 3.20 mm leads and a recommended ø0.90 mm hole. Tube counts are not uniform across the 10/100 BASE-T range — the 12-pin parts run 36 to 38 pieces per tube against 20 here — so tube count works as a secondary check on incoming material but not as the sole criterion; the marking on the body is what actually distinguishes parts.