0.40 mm Pitch, 30-Position, 1.5 mm Stack — Hirose DF40 Receptacle
The Hirose DF40GB(1.5)-30DS-0.4V(51) is a 30-position receptacle with center strip contacts from the DF40 series, designed for board-to-board stacking at a fixed mated height of 1.5 mm. Gold-plated contacts (2.00 µin) on both rows handle signal-level currents in compact handheld or portable equipment where space is the primary constraint. The shielded construction provides EMI containment in tight enclosures, and the solder retention pads anchor the SMT joints against shear forces from handling or vibration.
What the 1.5 mm Stack Height Means for the Build
This is a fixed dimension for this variant — the (1.5) in the order code locks the stack height. If the enclosure or mezzanine gap needs a different gap, the DF40 series offers other stack height options, but this specific part is set at 1.5 mm.
The shield is soldered to ground pads on the PCB, which also provides mechanical anchoring. No crimp or through-hole option exists for this variant; it is strictly a reflow-soldered component for automated assembly.