Gold Plated Spring Test Probe PA50-D2 Pogo Pin

Test Probe PA50-D Test Pin Test Tool 16.55mm Dia 0.68mm Gold Needle Tip

The PA50-D2 pogo pin is a specific type of spring test probe used primarily in electrical testing applications. It is known for its "large round head" and gold-plated finish, which enhances conductivity and corrosion resistance. The PA50-D2 can be used for conductive tests on items like PCBs, test jigs, and other electrical components. 

Key specifications

• Total Length: 16.55 mm
• Outer Barrel Diameter: 0.68 mm
• Recommended Drill Hole Size: 0.90 mm
• Minimum Center Distance: 1.27 mm
• Plunger Diameter (Tip): 0.90 mm (tip diameter for the D2 version, often called "large round head")
• Full Stroke: 2.65 mm
• Current Rating: 3 A
• Spring Pressure (at working stroke): 75 g
• Contact Resistance: 50 mΩ
• Materials: The plunger is typically made of heat-treated beryllium copper, the barrel is phosphor bronze, and the spring is music wire, all with gold plating.

• PCB Testing: It is used in test jigs (fixture testing) to make temporary electrical connections with pads or vias on a printed circuit board.
• Flashing Firmware: Pogo pins like the 
  PA50-D2
   can be used with custom adapter boards to make connections to debugging ports (e.g., SWD ports on Raspberry Pi modules) for flashing firmware or testing devices without soldering.
• Component and Solder Joint Testing: The "round head" tip is designed for making good contact with component pads and solder joints during in-circuit testing.