WHD12501TG Single Port DIP 10/100Base-TX PIN12 non-PoE LAN Transformer
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Yes, and it is one of the few complete drop-ins in this family: the two drawings match value for value on body size, row spacing, pitch, span and lead length, and all twelve pins have been checked as identically assigned.
Only the temperature grade differs, the WHD12501TG being rated -40 °C to +85 °C against thestandard grade. No PCB or termination change is needed; only the cold start-up verification has to be repeated at the wider grade.
A 100M part, and the internal structure settles it: the WHD12501TG holds only two 1CT:1CT units — two channels, one pairset — which is exactly one 100M port.
A Gigabit port uses all four pairs and needs four channels, or two pairsets, twice the unit count. The product listing also classifies it under10/100 BASE-T. Title blocks that disagree with the actual rate have turned up a few times in this product line; when they do, go by the internal unit count and the product classification.
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. 100M ports are common in small industrial equipment — fanless serial servers, DIN-rail gateways, outdoor surveillance front ends — positions that typically have neither air conditioning nor forced cooling, which is where the WHD12501TG earns its place. Other grades sit in the10/100 BASE-T range.
