The Hirose GT5-4S-HU is a 4-position, F-style receptacle housing from the GT5 series, molded in gray Polybutylene Terephthalate (PBT). The housing provides the physical shell and polarization for the contact set — the circuit count is set by the 4-position cavity layout, which matches a 4-circuit BOM line.
Terminal Compatibility — What Fits This Housing
The GT5-4S-HU is specified for use with F terminals. This is the critical mating detail: the housing accepts only the F-series crimp contact, not the M-series used in the GT5N male housings. If you are building a harness, confirm your terminal part number ends in the F suffix before ordering the housing. The PBT body provides the necessary dielectric and mechanical retention for the terminal latch.