Q48SG12034NRFA Datasheet, PDF (23/26 Pages) Delta Electronics, Inc. – Delphi Series Q48SG Quarter Brick Family Full Digital Control DC/DC Power Modules:

MECHANICAL DRAWING (WITH HEAT SPREADER)
*For modules with through-hole pins and the optional heat spreader, they are intended for wave soldering assembly
onto system boards, please do not subject such modules through reflow temperature profile.
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DS_Q48SG12034_06272013