Board Layout and Mating Header Fit
This is a bottom-entry receptacle: the mating header inserts from the underside of the board, and the solder tails exit through the top.
Voltage and Temperature Envelope
Rated 250 VAC — this is the maximum continuous working voltage between adjacent contacts. The white insulation color is standard for the KK254 series and aids visual inspection of seating depth.
Application Range and Series Context
The KK254 / 4455 series is a long-running Molex product family with broad header and receptacle compatibility — this 2-position receptacle mates with any 0.100" pitch KK254 male header of matching circuit count.