Product Introduction
The Contact Finger Spring is a high-precision elastic contact component designed for conductive connection, grounding compensation, and electromagnetic shielding applications. It is widely used in new energy vehicle high-voltage connectors, energy storage systems, rail transit, communication equipment, aerospace electronics, and industrial electrical systems.
With its multi-point elastic contact structure, the contact finger spring provides stable conductivity, low contact resistance, and reliable compensation performance. It effectively enhances electrical connection stability under vibration, thermal expansion and contraction, and frequent mating/unmating conditions.
Xuanyu Spring specializes in the manufacturing of high-reliability precision springs and can provide customized contact finger spring solutions according to customer requirements such as current capacity, installation space, contact force, and service life.
Product Specifications


Product Advantages
Stable Electrical Conductivity
Manufactured from highly conductive copper alloy materials, the product offers excellent conductivity and low contact resistance, ensuring stable long-term current transmission.
Multi-Point Elastic Contact Structure
The finger contact design provides uniform 360-degree contact, maintaining reliable electrical connection even under vibration and demanding operating conditions.
Excellent Fatigue Resistance
Optimized elastic structure combined with advanced heat treatment processes allows the spring to withstand frequent insertion cycles and long-term repeated use.
Strong EMI Shielding Performance
Suitable for high-frequency, high-voltage, and electromagnetic interference environments, effectively improving the overall shielding performance of electrical systems.
Flexible Customization Capability
Customized solutions are available according to customer requirements, including:
- Wire diameter
- Outer diameter
- Contact pressure
- Current rating
- Surface plating
- Mounting structure
This ensures compatibility with different connector systems and conductive applications.
Applications
Contact Finger Springs are widely used in:
- High-voltage connectors for electric vehicles (EV)
- Energy storage connection systems
- Battery pack connection modules
- EMI shielding systems
- Industrial electrical equipment
- Communication equipment
- Rail transit systems
- Aerospace electronic systems
FAQ
Q: What is the main function of a Contact Finger Spring?
A: It is mainly used for conductive connection, grounding compensation, and EMI shielding to improve the stability and reliability of electrical connection systems.
Q: Can Contact Finger Springs be used in EV high-voltage connectors?
A: Yes. They are widely used in high-voltage connector systems for electric vehicles and energy storage applications.
Q: Can the surface plating be customized?
A: Yes. Common surface finishes include silver plating, gold plating, nickel plating, and tin plating.
Q: Do you support custom samples?
A: Yes. We can provide sample production according to customer drawings or technical specifications.
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