Spring Test Probe 4-point Crown Head P75-Q2 Pogo Pin

Pogo Pin P75-Q2 4-point Crown Head Probe Spring Test Needle Outer Diameter 1.02MM, P75-Q2 Test Needle Crown Head 1.3 mm Tip Total length 16.5mm

The P75-Q2 pogo pin is a spring-loaded test probe widely used for testing printed circuit boards (PCBs) and other electronic components. It is characterized by its four-point crown head (Q2) tip, which is designed for making precise contact with component leads, test pads, and solder joints.

Specifications

• Model number: P75-Q2
• Tip type: 4-point crown head (four-jaw or plum blossom head)
• Total length: Approximately 16.5 to 16.54 mm
• Needle tube (barrel) diameter: 1.02 mm
• Needle head (plunger) diameter: 1.3 mm
• Shank/rod diameter: 0.74 mm
• Full stroke: 2.54 mm
• Spring pressure: 100g (a common spring force, though customization may be available)
• Current rating: 3A
• Contact resistance: 50 mΩ
• Materials: The plunger is heat-treated beryllium copper, the barrel is phosphor bronze (gold-plated), and the spring is music wire.
• Receptacle compatibility: Compatible with various R75 series receptacles, such as R75-1W/2W/3W.

• Recommended use: The crown-head tip is ideal for making stable, low-resistance contact on component leads and solder pads.
• Non-recommended use: It is not recommended for "no-clean" boards where dust and rosin accumulate, as this can affect the connection.
• Receptacle system: The probe is used in conjunction with a receptacle (the R75 series is specified) into which the pogo pin is inserted. This allows for easy replacement of the probe without resoldering.