PCB/SMD spring finger contacts

Manufacturing PCB/SMD spring finger contacts involves a series of steps aimed at achieving a balance between mechanical resilience, electrical conductivity, and dimensional accuracy:
1. Material Selection:The primary material for spring finger contacts is often phosphor bronze, stainless steel, or nickel-plated brass.
2. Raw Material Processing
(1)Wire Drawing: Draw the wire to the desired diameter, ensuring uniformity and consistency in thickness.
(2)Annealing: Heat-treat the drawn wire to soften it and easier to form and work with.
3. Forming the Spring Fingers
(1)Coiling: Wind the annealed wire around a forming tool or mandrel to create the spring fingers.
(2)Trimming: Cut the coiled wire to the required length for the target application.
4. Surface Treatment(Optional): Handa Shielding apply a surface treatment, such as nickel plating, to enhance corrosion resistance and electrical conductivity.
5. Inspection and Testing
(1)Visual Inspection: Check for defects such as kinks, breaks, or uneven coils.
(2)Electrical Testing: Measure the electrical conductivity of the spring fingers to ensure they meet the required standards.
(3)Mechanical Testing: Test the spring fingers for their force exertion capability and durability under cyclic loading conditions.
6. Packaging
(1)Protective Coating: Apply a protective coating if necessary to prevent oxidation.
(2)Packaging: Package the finished products typically in bags or boxes according to the quantity and application-specific requirements.
7. Regular Audits: Implement regular audits and quality checks throughout the manufacturing process.