1-5120603-2 is a 1.0mm pitch fine pitch SMT stacking receptacle connector designed for parallel board-to-board applications, compliant with IEEE 1386 standards. This 84-position receptacle features 50µ" gold plating on the contact area with phosphor bronze contacts, and offers a current rating of 1.0 ampere per contact with a maximum contact resistance of 30 milliohms. The connector includes locating posts for fast, accurate hand placement on PCBs and is tested for durability up to 100 mating cycles minimum. With dimensions of A=41.0mm, B=44.22mm, C=45.9mm, and H=8.37mm, it provides reliable interconnection for mezzanine card applications. The design allows additional clearance during mating to increase reliability by accommodating registration misalignment and eliminating stresses on solder joints.