Common parameters in pogo pin connector design
1. Low-level circuit contact resistance
When the supply voltage and current do not change the size of the physical contact surface and the oxide and film of the contact surface, evaluate the contact resistance of the contact system. The maximum test current is 100mA and the maximum open-circuit voltage is 20mV.
2. Insulation resistance
When the DC potential is supplied to adjacent contact points or between the metals closest to the contact points, the resistance of the insulating material is detected.
3. Dielectric withstanding voltage
The voltage that the connector can withstand when the system voltage suddenly increases or due to switching, generates an instantaneous excess potential.
4. Normal force
The pressure of the contact point is perpendicular to the contact surface under normal use of the contact system.
5. Durability
Because the contact surface is worn out during insertion and removal, this wear will reduce the mechanical and electrical performance of the connector. Under the set environment, the connector is inserted and removed as a cycle. The minimum number of insertion and removal cycles the connector can withstand To evaluate the durability of the connector.
7. Vibration
Evaluate the influence of small changes on the contact surface caused by mechanical force on the electrical characteristics of the contact system.
8. Mechanical shock
Detect the mechanical and electrical integrity of the connector. When the connector device acts on the electronic device, it may be subjected to vibration during handling, transportation, etc.
9. Thermal shock
Detect the resistance when the connector is exposed to extremely high and low temperatures, or the worst-case shock during storage, transportation, and use.
10. Temperature Life
When exposed to a high-temperature environment where the mechanical properties fail due to temperature changes, evaluate the impact of this environment on electrical stability. The high temperature will cause contact oxidation and reduce the positive force of the terminal, which will reduce the electrical performance.
11. Thermal cycling with humidity
When exposed to an environment that will produce high temperature/humidity that makes the mechanical properties of the contact system ineffective, evaluate the impact of this environment on the electrical stability of the contact system. These effects include the acceleration of the oxidation of the contact surface by moisture, the oxidation of the tiny particles between the contact surfaces, and the bottom layer Oxidation of the metal. Oxidation coating will reduce the electrical performance of the connector.
12. Others: such as Gas? test, salt spray test, high-frequency characteristics (such as: cross? talk, insertion? loss, impedance