The Hirose TM24RSG-5A-88 is a shielded RJ45 jack from the TM24R series, terminated in 8 positions (8P8C) for standard Ethernet cabling. The housing is polybutylene terephthalate (PBT), and the shell includes an EMI finger for grounding the cable shield. A board guide on the part aids alignment during PCB assembly, reducing the risk of solder-joint stress when the plug is inserted. This jack is intended for internal equipment wiring where a shielded Ethernet port is needed on a PCB — think industrial controllers, network switches, or test equipment that must reject electrical noise from the surrounding environment.
What the Shielding and Gold Plating Mean for Your Application
The EMI finger on the shell provides a low-impedance path from the cable shield to the board ground. The 50.0µin gold on the contacts is a heavy plating grade.
How It Compares to Similar Hirose RJ45 Jacks
The TM24RSG-5A-88 sits alongside the TM11R-5M2-88(70) and TM21R-5C-88-LP(50) in Hirose's shielded right-angle RJ45 lineup. All three are 8P8C, through-hole, gold-plated jacks with EMI fingers. The TM11R-5M2-88(70) carries a Cat5 rating and a slightly thicker gold plating of 51.2µin (1.30µm) — a marginal difference that doesn't change the mating-cycle or corrosion performance in practice. The TM21R-5C-88-LP(50) is rated Cat5e, adds a board lock and a light pipe feature, and uses a copper alloy contact material instead of phosphor bronze. If your application requires Cat5e certification or an integrated LED light pipe, the TM21R variant is the better fit. For a standard Cat5e-compatible jack without those extras, the TM24RSG-5A-88 is the direct choice — the board guide gives it a slight assembly advantage over the TM11R, which lacks that feature.