What the 1.27 mm Pitch and 16 Positions Mean for Your Board Stack
The 20021221-00016C4LF: This is a 16-position, dual-row header on 1.27 mm pitch — the board footprint is compact enough for dense mezzanine stacks but still leaves room for a single via between pads on a standard 0.062-inch PCB.
Gold Mating Finish — Why 10.0 µin Matters for Field Service
The mating contacts are gold over nickel, 10.0 µin thick.
RoHS compliant.
The only difference between this 16-position header and the 20021221-00014C4LF is the circuit count — 16 positions versus 14. Same pitch, same gold mating finish, same shrouding, same 1 A rating. If your BOM calls for 14 positions, the 14-position version avoids an unused row; if you need 16, this is the one.