WHSG48001K1 Dual Ethernet Transformer 48PIN Operating Temperature 0℃~ 70℃
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Land pattern, pin net names, internal order, temperature grade and all other electrical ratings match; isolation hipot is the one difference, and the two are stated under different conditions: the WHSG48001K1 at 2500 VAC / 1 mA / 2 s, theWHSG48001Gat 1500 VAC / 1 mA / 60 s.
The voltage is higher but applied for far less time, so the figures have to be read together with their conditions rather than compared on voltage alone. Pick whichever matches how the system's safety documentation states the requirement.
Peak temperature 250 °C ±3 °C, with 20 to 40 s spent within 5 °C of the peak.
Time above liquidus is counted from 217 °C and runs 60 to 150 s. Ramp up no faster than 3 °C per second and down no faster than 6 °C per second. The WHSG48001K1 is rated MSL level 1, with a floor life of half a year at or below 30 °C / 60% RH — the only part in the100/1000 BASE-T rangesection of this batch that publishes a reflow profile.
Dual Gigabit port equipment whose safety documentation states a 2500 VAC short-duration hipot requirement, with the component temperature between 0 °C and +70 °C.
The WHSG48001K1 is a surface-mount part, 7.50 mm Max high, with 0.10 mm coplanarity across 48 terminations, assembled by reflow and supplied on tape. Where the system only calls for the 1500 VAC / 60 s condition, thestandard parton the same land pattern is enough; equipment powering up below 0 °C needs the wide-temperature grade.
