What this 2-position header is built for
The SM03B-NSHSS-TB shares the same 1.00 mm pitch, right-angle SMT termination, latch holder, and 1 A rating, but carries 3 positions instead of 2. If your BOM calls for a 2-position header, the SM02B-NSHSS-TB is the correct choice; the 3-position variant adds an extra circuit for a signal pair or power pair.
