Precision Spring Sheets / Spring Contacts - Custom Stamped to Specifications
Tingfeng Hardware specializes in manufacturing precision metal springs and contacts, providing custom, high-reliability precision metal components for smart wearables and AI hardware. Utilizing high-speed precision stamping presses and multi-station progressive dies, we achieve stable stamping of ultra-thin materials down to 0.05mm.
Equipped with a comprehensive suite of advanced processing and inspection equipment, we maintain full in-house control over the entire workflow—from mold design to mass production—ensuring that our products comply with ISO 9001 and international environmental standards. With a daily production capacity exceeding 2 million units and new mold delivery lead time of just 5-7 days, we offer rapid responsiveness to meet the R&D and iteration demands of smart product development.
Precision spring sheets are critical components for reliable electrical connections in smart devices, widely used in TWS earbuds, smartwatches, and health monitoring devices. High-performance materials such as phosphor bronze and beryllium copper are utilized to ensure optimal performance.
Through precise die design and wire EDM processing, contact fingers are accurate and burr-free. Customizable gold/silver plated contacts meet high-cycle mating and low contact resistance requirements. Our professional mold team provides early DFM analysis, optimizing product structure, avoiding potential risks, and accelerating time-to-market for smart products.
| Feature | Advantage to You |
|---|---|
| Ultra-thin material stamping | Stable processing of 0.05mm thickness, meeting miniaturization needs of smart wearables |
| Precise force control | Contact force tolerance ±10% via die adjustment and material selection, ensuring electrical reliability |
| Rapid sampling service | Engineering samples delivered in 5-7 days, supporting rapid iteration of smart products |
| Full dimension inspection | Vision measurement system, 100% inspection of critical dimensions, complete inspection reports provided |
| International compliance | Products meet RoHS, REACH, facilitating global market access for customers |
| Specification Item | Detail / Range | Tolerance / Standard |
|---|---|---|
| Material Thickness | 0.05 mm – 0.5 mm | ±0.005mm |
| Contact Width | 0.3 mm – 20 mm | ±0.02mm |
| Contact Force (at spec height) | 0.1 N – 2.0 N | ±15% |
| Cycle Life | ≥ 100,000 cycles | Resistance change ≤20% |
| Min. Bending Radius | 0.1 mm | No cracks |
| Surface Plating Thickness | 0.05 μm – 0.5 μm | Per customer requirement |
| Burr Height | ≤ 0.02mm | Custom ≤0.01mm available |
| Flatness | ≤ 0.03mm / 10mm | Die guaranteed |
- Advanced Wearables: TWS earbud charging case springs, smartwatch heart rate monitoring contacts, AR glasses battery connection springs
- Smart Home: Smart lock conductive springs, smart speaker keypad contacts, robot vacuum battery connectors
- Med-Tech: Portable monitor battery springs, smart bracelet health monitoring contacts
- AI Hardware: AI voice assistant device keypad springs, smart glasses flexible circuit contacts
Absolutely. This is our core expertise. We provide free DFM analysis within 3-5 days, often helping clients achieve 15-30% cost reduction through design for manufacturability.
We implement a rigorous 4-stage QC system with 100% full inspection. Our track record shows 99.99% qualification rate.
Standard lead times: 3-7 days for prototypes, 7-15 days for mass production. We offer VIP prioritization cutting lead times by up to 30%.
Yes. You get a 1v1 exclusive consultant with 1-hour initial response commitment and 24-hour technical support.
Yes. We provide material certifications and environmental test reports (RoHS, REACH compliant) upon request.
We start with mutual NDA and implement strict mold ownership protection and confidential data security measures.
We offer flexible payment terms (T/T, L/C at sight) and MOQ from 1 piece for prototyping.
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.