WHSG48001TG Dual Ports SMD Gigabit Base-T PIN48 non-PoE LAN Transformer
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Yes, and it is a complete drop-in: body, the net names of all 48 pins, land pattern, internal element order and every electrical rating match, with only two temperature fields different. The WHSG48001TG is rated -40 °C to +85 °C operating and -40 °C to +125 °C storage; theWHSG48001Gis 0 °C to +70 °C and -40 °C to +85 °C.
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 number is the temperature at the part's location, not the cabinet or room ambient — a surface-mount part sits on the board surface, and near the power supply or downstream in the airflow it runs well above the inlet temperature. The WHSG48001TG is rated -40 °C to +85 °C, leaving headroom at both ends against the standard grades in the100/1000 BASE-T range.
Yes. The WHSG48001TG holds eight separate 1CT:1CT units, four channels to each Gigabit port.
One channel is one differential pair; two channels, one out and one back, make a pairset, so each Gigabit port is two pairsets. Cross talk between the ports is held to -30 dB Min across 1–100 MHz, and each port keeps its own termination and grounding as the PHY reference design specifies. Other port counts sit in the100/1000 BASE-T range.
