WHSQ24B04T0 Single Port SMD 2.5G/5G BASE-T PIN24 LAN Transformer
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No. The WHSQ24B04T0 is on a 1.02 mm lead pitch, whereas the other 24-pin parts in the VOOHU 2.5G/5G range use 1.27 mm.A different pitch means the land pattern has to be redrawn; it is not a tweak. The body of the WHSQ24B04T0 measures 13.60 mm by 12.00 mm and stands 6.25 mm tall, so it is both taller and squarer than the two lower-profile packages already published in this range.
Where a board is already laid out for the 1.27 mm family, stay inside that pitch when selecting from the2.5G/5G BASE-T range. For a new layout, the suggested land pattern works to an 11.22 mm lead span with 0.65 mm pads.
The WHSQ24B04T0 suits single-port 2.5G/5G data ports where the component temperature may fall anywhere between -40 °C and +85 °C.Typical uses are access ports on industrial switches, 2.5G ports inside unattended wide-temperature enclosures, and outdoor wireless equipment running a 2.5G uplink. The WHSQ24B04T0 carries no PoE rating, so the port has to be powered locally and the centre taps cannot double as a supply path.
Note that -40 °C is the lower operating limit of the component, not a demonstrated cold-start capability for the finished product – low-temperature power-up still has to be measured with the target PHY and cable. Other options are listed in the2.5G/5G BASE-T range.
Not within its floor life. The WHSQ24B04T0 is rated MSL Grade 1 with a floor life of 0.5 year at 30 °C and 60% RH or below.Grade 1 is the least restrictive moisture sensitivity level, so as long as storage and line-side conditions stay inside that window and the reels go down within the floor life, no separate bake is needed for this part.
Run reflow to the profile published for the WHSQ24B04T0: a peak of 250 °C plus or minus 3 °C, 60 to 150 seconds above liquidus, and a ramp-up rate of 3 °C per second maximum. Reels that have been outside those conditions should go through your own moisture-control procedure before assembly.
