PL75-B1 0.7mm Tip 16mm Pogo Spring Test Probe Pin

PL75-B1 0.7mm Tip 16mm Pogo Spring Test Probe Pin is a high-precision electrical contact component designed for reliable PCB testing, programming, and circuit debugging. This specialized spring-loaded probe, often called a “pogo pin,” ensures a consistent connection between test fixtures and printed circuit boards by utilizing an internal spring mechanism. Furthermore, the PL75-B1 model features a sharp, spear-like tip that pierces through oxidation or residue on solder pads and vias. Consequently, engineers and technicians can achieve low contact resistance and high signal integrity during rigorous automated test equipment (ATE) cycles. Therefore, you should integrate these durable pins into your custom test jigs to maintain efficiency and accuracy in high-volume electronics production.

Key Features:

• Spear Tip Design (B1): The sharp 0.7 mm pointed tip facilitates excellent penetration through contaminants, ensuring a stable electrical path on flat pads and plated-through holes.
• Spring-Loaded Reliability: An internal high-tension spring provides consistent pressure, which maintains electrical contact even under mechanical vibration or slight board misalignment.
• Gold-Plated Finish: The pin features high-quality gold plating over a nickel base to prevent corrosion and minimize electrical resistance over its long operational life.
• High Cycle Life: Engineered for durability, this probe pin supports thousands of compression cycles, making it ideal for repetitive production-line testing.
• Standard Fit: This pin fits perfectly into standard R75 series sockets, allowing for easy replacement and maintenance of test fixtures without soldering.

Technical Specifications:

• Model Number: PL75-B1
• Current Rating: ≈ 3 A (Amperes)
• Contact Resistance: ≤ 50 mΩ (Milliohms)
• Spring Pressure: ≈ 100 g to 150 g (at full stroke)
• Full Stroke: ≈ 2.50 mm
• Recommended Test Pitch: ≥ 1.91 mm

Mechanical Specifications:

• Plunger Material: Heat-treated Beryllium Copper (BeCu)
• Barrel Material: Phosphor Bronze (Gold-plated)
• Spring Material: Stainless Steel or Music Wire
• Tip Shape: Spear / Sharp Point (B1 type)

Dimensions:

• Total Pin Length: ≈ 16.35 mm
• Tip Diameter: 0.74 mm
• Barrel Diameter: 1.02 mm
• Recommended Mounting Hole: 1.30 mm to 1.35 mm (when used with R75 socket)

Pinout and Wiring:

• Installation Note: You typically install these pins into a matching R75 series receptacle (socket).
• Wiring Connection: Connect the test lead wire to the tail end of the receptacle, not the pogo pin itself. However, you can solder directly to the barrel for permanent installations if a socket is not utilized.
• Alignment: Ensure the probe pin sits perpendicular to the target PCB to avoid lateral stress on the internal spring.

Datasheet Reference:

• Download PL75 / GKS-075 Series Test Probe Datasheet

Commonly Used in:

• PCB Test Fixtures: Building “Bed of Nails” testers for functional circuit verification.
• Programming Headers: Temporary connections for uploading firmware to microcontrollers without permanent headers.
• Battery Charging Docks: Providing reliable spring-loaded charging contacts for portable electronic devices.

Applications:

• ICT (In-Circuit Testing): Measuring component values and checking for shorts on populated circuit boards.
• FCT (Functional Testing): Powering up boards to verify overall system logic and output.
• Modular Electronics: Connecting removable PCB modules where a semi-permanent spring contact is required.

Equivalent Models:

• P75-B1: A very common alternative designation for the 1.02 mm barrel spring probe series.
• GKS-075 (Ingun): The industrial standard equivalent often used in high-end European test equipment.
• R75 Series Sockets: In addition, these are the compatible receptacles required for mounting the PL75-B1 pins.

Package Includes:

• 1 x PL75-B1 0.7mm Tip 16mm Pogo Spring Test Probe Pin