In today’s complex systems—from aerospace electronics to defense communication devices—connectors play a crucial role in ensuring continuous, high-quality electrical performance. At The Lindgren Group, we provide connector plating services that meet the industry’s highest standards for conductivity, corrosion resistance, and mechanical durability.
Our customers rely on us to finish high-performance connectors that function flawlessly in extreme environments. Whether you’re manufacturing RF connectors, circular military connectors, or microelectronic contacts, our plating expertise ensures your components are protected and performance-ready.

The Importance of Plating for Connectors

Connectors are subject to frequent mating and unmating, harsh temperatures, vibration, and exposure to moisture or chemicals. High-quality metal finishing is critical to:
  • Maintain low contact resistance
  • Ensure consistent electrical conductivity
  • Prevent corrosion and wear
  • Support solderability and bonding
  • Comply with MIL-SPEC and industry standards
At The Lindgren Group, we provide connector plating solutions using gold, silver, tin, and nickel—each selected for its unique electrical and protective properties.

Common Connector Plating Options

Gold Plating for Connectors

Gold is a premier choice for precision connectors in mission-critical applications. Benefits include:
  • Excellent corrosion resistance in humid or salty environments
  • Stable, low-resistance signal paths
  • Long-term wear performance in high-cycle mating applications
  • Compatibility with other precious metals or nickel underplates
  • Used in aerospace, defense, telecommunications, and medical devices
Our gold plating complies with MIL-G-45204, AMS 2422, and customer-specific specs, with options for Type I and Type II deposits.

Tin Plating for Connectors

Tin offers an economical solution for large-volume connector production:
  • Highly solderable for PCB terminations
  • RoHS-compliant, lead-free finish
  • Bright and matte tin available
  • Compatible with copper, brass, and nickel substrates
  • Suitable for automotive and industrial control applications
Tin is a great choice for connectors where conductivity and soldering reliability are key.

Silver Plating for Connectors

Silver offers the highest electrical conductivity of any metal:
  • Ideal for RF, microwave, and high-frequency applications
  • Strong thermal and oxidation resistance
  • Commonly used in power distribution connectors and ground straps
  • Cost-effective alternative to gold in many systems
  • Meets MIL-QQ-S-365 and ASTM B700 standards

Nickel Underplating

Nickel serves as a diffusion barrier or standalone corrosion-resistant finish:
  • Provides structural durability and hardness
  • Enhances adhesion for gold and silver overlays
  • Prevents base metal migration and oxidation
  • Often specified in aerospace and military connectors
We apply electroless or electrolytic nickel, depending on the application.

Industries Served

The Lindgren Group provides connector plating for customers across a wide range of industries:

Aerospace & Defense

  • Avionics connector systems
  • Missile and navigation electronics
  • Ground and air vehicle systems
  • Compliant with MIL-DTL-38999, MIL-PRF-39012, and other military specs

Medical Devices

  • Diagnostic and surgical equipment connectors
  • Low-resistance, biocompatible finishes
  • Stable performance in sterilization environments

Telecommunications

  • Fiber-optic and copper cable connectors
  • High-frequency RF signal contacts
  • Telecom base station and infrastructure components

Automotive & EV

  • Powertrain and sensor harnesses
  • EV battery and charging connectors
  • CAN bus and vehicle communication terminals

Industrial & Energy

  • Oil and gas system controls
  • Renewable energy transmission hardware
  • Robotic automation and PLC system connectors

Our Connector Plating Capabilities

We provide custom connector plating solutions using:
  • Rack plating for larger and delicate components
  • Barrel plating for small, high-volume parts
  • Selective and spot plating for critical contact areas
  • Custom masking and tooling for controlled coverage
  • Plating thickness control from 0.00002” to 0.0010”+
  • Substrate compatibility: brass, copper, stainless steel, aluminum, beryllium copper
Our processes are managed with tight quality control, ensuring uniform coverage, adhesion, and compliance with your print or spec.

Testing and Quality Assurance

Your connectors must perform every time, in every condition. That’s why we utilize:
  • XRF thickness measurement
  • Adhesion, solderability, and porosity testing
  • Contact resistance and continuity testing
  • Visual inspections under 10X magnification
  • Documentation and full Certificate of Compliance (C of C)
  • Traceability of all process parameters
We are ISO 9001 and NADCAP certified, with capabilities tailored to aerospace, medical, and military applications.

Benefits of Working With The Lindgren Group

✔️ Deep expertise in plating high-reliability connectors
✔️ Support from prototype through full-scale production
✔️ Custom solutions for masking, tooling, and selective plating
✔️ Fast turnaround and reliable delivery
✔️ Fully traceable processes with strict QA protocols
We serve as a trusted metal finishing partner for OEMs and contract manufacturers across North America.

Request a Quote for Connector Plating

Need reliable connector plating services that ensure performance, precision, and durability?
Contact The Lindgren Group today to discuss your project.