Spring characteristic curve
The spring characteristic curve describes the relationship between spring force and spring travel. It shows how the force of a spring changes when the Contact Probe is compressed during the contact-making process.
For Contact Probes, the spring characteristic curve is important because it determines the force acting on the Test Point, solder pad, or contact area. It thus influences contact quality, the mechanical stress on the device under test (DUT), and the ability to penetrate residues or oxide layers.
The Progressive Series utilizes increased spring preload, so that a higher force is applied upon initial contact with the DUT, while the nominal Spring force can remain unchanged. This allows for more effective penetration of contaminants and supports stable contact conditions.
FAQ
It determines the Contact force applied to the Test Point or solder joint during the contact process.
Increased spring preload means that a greater force is applied right from the start of contact.
The working stroke describes the range of motion utilized by the Contact Probe. Within this range, the spring characteristic curve indicates the spring force acting during contact.
Further terms
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