Precision Stamped Spring Contacts – Phosphor Bronze for Connectors & Switches
Tingfeng Hardware provides precision stamped spring contacts using phosphor bronze and beryllium copper materials specifically for connector and switch applications. Our spring contacts achieve stable elastic force and low contact resistance through precision progressive die stamping and stress relief heat treatment. With 16 years of precision manufacturing experience, we provide high-reliability spring contact solutions for switches, connectors, and relays.
Product Description
Spring contacts are core components for switching control and signal transmission in switches and connectors. Our phosphor bronze spring contacts achieve precise contact surface geometries and stable elastic force through precision stamping forming. Phosphor bronze offers excellent conductivity (approximately 15% IACS), fatigue resistance, and elastic memory, suitable for high-frequency switching operations and long-term use. Silver or gold plating controls contact resistance below 20mΩ while ensuring oxidation and corrosion resistance. Each spring contact undergoes 100% force testing and dimensional inspection, suitable for micro switches, tactile switches, relays, and connectors.
Product Features & Advantages
| Feature |
Advantage to You |
| Phosphor bronze high-spring material |
Excellent elastic memory and fatigue resistance, switch life ≥100,000 cycles |
| Stable contact force control |
Contact force tolerance ±15%, ensuring switching reliability consistency |
| Low contact resistance plating |
Silver/gold plating controls contact resistance below 20mΩ |
| Multiple spring shapes |
Supports cantilever, bridge, circular, and other spring contact designs |
| Automated assembly compatibility |
Tape-and-reel delivery, compatible with SMT and automatic assembly equipment |
Product Specifications
| Specification Item |
Detail / Range |
Tolerance / Standard |
| Material Type |
Phosphor Bronze C5191 / Phosphor Bronze C5210 / Beryllium Copper |
Per drawing |
| Material Thickness |
0.05 mm -- 0.4 mm |
±0.005mm |
| Contact Force |
0.1 N -- 2.0 N |
±15% |
| Contact Resistance |
≤ 20 mΩ |
Measured |
| Switching Life |
≥ 100,000 cycles |
Resistance change ≤20% |
| Surface Finish |
Silver / Gold / Nickel / Tin Plating |
Thickness controlled |
| Operating Temperature |
-40°C -- +120°C |
Phosphor bronze property |
| Packaging |
Tape & Reel / Bulk |
As required |
Product Applications
- Micro Switches: Mouse micro switch spring contacts, industrial switch contacts, limit switch springs
- Tactile Switches: Phone keypad switch contacts, remote control switch springs, keyboard switch contacts
- Relays: Signal relay contacts, power relay contact springs, automotive relay terminals
- Connectors: Board-to-board connector spring contacts, FPC connector contact tabs, battery connector springs
Frequently Asked Questions
Q: Can you handle complex custom designs and provide design optimization suggestions?
A: 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.
Q: How do you ensure quality consistency and handle defect issues?
A: We implement a rigorous 4-stage QC system with 100% full inspection. Our track record shows 99.99% qualification rate.
Q: What are your lead times and how do you handle urgent orders?
A: 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%.
Q: Will I get timely responses and professional support throughout the project?
A: Yes. You get a 1v1 exclusive consultant with 1-hour initial response commitment and 24-hour technical support.
Q: Can you provide material certifications and environmental compliance reports?
A: Yes. We provide material certifications and environmental test reports (RoHS, REACH compliant) upon request.
Q: How do you protect my designs and intellectual property?
A: We start with mutual NDA and implement strict mold ownership protection and confidential data security measures.
Q: What are your payment terms and MOQ requirements?
A: We offer flexible payment terms (T/T, L/C at sight) and MOQ from 1 piece for prototyping.
