Constant Contact Resistance Spring Contact Probe from Qualmax

Dubble-ended Probe, Single-ended Probe, Solid Pd Alloy Probe, Constant Cres Probe,
Coaxial Probe, Kelvin Probe, Switching Probe, Touch Probe, GT Probe, Battery Contact,
Pneumatic Probe, Interface Probe, Industrial Application Probe, In-Circuit Test Probe

Electro-formed Barrel Probe: GN Series

Usually spring probe barrels are made either by machining pre-formed pipes or by deep-drawing.
As miniaturization progresses, however, both technique have drawbacks in terms of contact resistance
Stability. Leeno have developed a proprietary method to make very small barrels using electro-forming
process, in which the barrel material is electronically deposited or built-up from electrolytic solution,
and thus gives excellent inside surface characteristics as shown below.  

Features

• No electroplating is required for the barrel
• Very low contact resistance
• Very stable contact resistance throughout the life span
• Minimal solder migration
• Proprietary barrel manufacturing process
• Barrel diameter : from 0.08mm (0.003") to 0.38mm (0.015")
• Can be either DB Type or GX Type depends on application
• Custom designs are welcome
• Just call us. We will design for you from your specification at no charge
• Sample delivery within 2 weeks aro
• Down to 0.12mm pitch
• Spring force as small as 2.8g
• Excellent for RF applications
• Following parts are just a show case

Comparison between GN Series Barrel vs. Au Clad Barrel