Backplane Blade Power Receptacle, 4-Position Press-Fit
The 120953-1: It is a backplane connector, meaning it is intended to be mounted on a backplane PCB to receive a mating plug from a daughtercard or power module. The press-fit termination eliminates the need for soldering, which is preferred in high-reliability backplane assemblies where rework and field replacement of individual connectors must be possible without desoldering. The single-row layout with 4 power contacts delivers a compact power interconnect for a 250V rated bus.
Press-Fit Termination for Solderless Backplane Assembly
The press-fit termination is the defining feature of this receptacle for a backplane architect. Instead of solder joints, the compliant press-fit tail deforms elastically into the plated through-hole, creating a gas-tight connection. This makes the 120953-1 well-suited for backplanes that undergo multiple rework cycles or operate in high-vibration environments where solder fatigue is a risk. The through-hole mounting provides mechanical retention through the board, and the press-fit interface meets the reliability requirements of telecom and datacom equipment where backplane connectors are rarely depopulated once assembled.
Rated for 250V with Wide Temperature Range
The 250V voltage rating is the headline electrical spec for this blade power receptacle. It is sized for power distribution within an enclosure — think a server chassis or industrial controller backplane — where the bus voltage stays under 250V.