In high-reliability industries, electrical connectors aren’t just components—they’re lifelines. Whether you’re powering an aircraft, guiding a missile, or transferring critical data in a surgical tool, the performance of your electrical connectors depends on the quality of the plating finish.

At The Lindgren Group, we specialize in connector plating services that enhance conductivity, corrosion resistance, solderability, and wear resistance. With decades of experience supporting industries like aerospace, defense, medical, industrial, and telecom, we understand that your connector plating needs to meet tight tolerances, pass stringent inspections, and survive the harshest environments on earth—or beyond.

What Is Connector Plating?

Connector plating refers to the electroplating or electroless plating of electrical connector components such as pins, sockets, terminals, contacts, and housings. The goal is to enhance electrical performance, protect against corrosion, improve durability, and ensure reliable long-term operation.

Common connector components we plate include:

  • Circular and rectangular connectors

  • D-sub connectors

  • RF/microwave connectors

  • PCB terminals

  • High-density data connectors

  • Board-to-board and wire-to-board systems

  • Fiber optic and hybrid connectors

The finish is often a thin but critical layer of gold, silver, tin, or nickel, and may include underplating or multi-layer systems depending on the application.

Benefits of Precision Connector Plating

When properly engineered, connector plating offers multiple technical benefits:

Enhanced Electrical Conductivity

Precious metal plating like gold or silver ensures low contact resistance, especially in signal and power-critical applications.

Corrosion Resistance

Connectors are often exposed to harsh operating environments—salt spray, moisture, chemical exposure, or humidity. High-quality plating protects the base metal from oxidation or degradation.

Wear & Fretting Resistance

Repeated mating cycles or mechanical vibration can wear down uncoated connectors. Hard, dense plating protects contact surfaces and prevents micro-wear (fretting).

Solderability

Tin plating offers excellent solderability for connectors mounted to printed circuit boards (PCBs).

Contact Lubricity

Coatings like gold with nickel underplates reduce friction and extend connector lifespan, especially for high-cycle connectors.

Thermal & Galvanic Protection

Certain finishes provide thermal resistance or mitigate galvanic corrosion when dissimilar metals are used in assemblies.

The Lindgren Group’s Connector Plating Capabilities

We understand the critical nature of every contact point and offer advanced connector plating services with unmatched precision:

  • Gold Plating (Type I, II, III): for low-resistance signal and power contacts

  • Silver Plating: high-conductivity and RF/microwave connectors

  • Tin Plating (bright or matte): solderable surfaces for PCB connectors

  • Zinc Nickel Plating: connector housings for corrosion and EMI protection

  • Electroless Nickel: uniform plating for tight-tolerance components

  • Nickel Underplates: barrier layers for precious metal finishes

  • Selective Plating: controlled finishes on contact areas only

  • Rack, barrel, and vibratory plating for small or bulk components

  • Laser masking and precision fixturing for complex connector shapes

  • RoHS and REACH-compliant chemistry

Connector Plating for Aerospace & Defense Applications

Aerospace and defense platforms rely on thousands of mission-critical electrical connectors—each one expected to perform without fail. Our connector plating services meet or exceed specifications such as:

  • MIL-DTL-38999

  • MIL-DTL-26482

  • MIL-STD-790

  • ASTM B488 for gold

  • AMS 2400, AMS 2422

  • IPC J-STD-001 and IPC-A-610 (assembly level)

  • NADCAP-certified processes upon request

Typical aerospace and military connector components we plate include:

  • Contact pins and sockets

  • Shells and housings

  • EMI shielding components

  • RF connector parts

  • Ground and bonding terminals

  • Avionics interconnects

We provide full lot traceability, certifications, and first article inspection (FAI) documentation for all defense and aerospace orders.

Connector Plating for Medical Devices

When you’re building life-saving technology, connector failure is not an option. The Lindgren Group offers medical device manufacturers:

  • Biocompatible gold or silver finishes

  • Lubricious contact surfaces for ease of mating/unmating

  • Corrosion-resistant plating for sterilizable components

  • Support for small-format or micro-connector contacts

  • Cleanroom-compatible processes (upon request)

We serve medical OEMs building devices such as:

  • Diagnostic imaging systems

  • Patient monitoring devices

  • Electrosurgical equipment

  • Robotic surgery systems

  • Implant programming devices

Plating Small & Complex Connector Components

Our specialized tooling and racking systems are built for precision, repeatability, and cleanliness. Whether you need bulk processing of tin-plated terminals or selective gold plating on micro-contact surfaces, we have the capability to handle:

  • High-density connectors

  • Miniaturized or micro-contacts

  • Pin headers

  • Socket contact bands

  • Blade connectors

  • Spring probes

Our selective plating processes allow us to plate only the functional areas of the connector, reducing material waste and improving mating performance.

Our Commitment to Quality

We hold ourselves to the highest quality and traceability standards in the industry. Every connector component that leaves our facility has been subjected to:

  • Visual and dimensional inspection

  • Coating thickness verification (XRF)

  • Adhesion and solderability testing

  • Cleanliness and contamination control

  • Lot tracking and documentation

  • Optional reliability and mating-cycle testing

Our internal systems and external certifications ensure your product meets the exact specs—on time and on budget.

Industries We Serve

Connector plating isn’t just for one industry—it’s the hidden hero of every modern electrical system. We support:

  • Aerospace and aviation

  • Defense and military

  • Medical devices

  • Automotive and EV systems

  • Industrial automation

  • Consumer electronics

  • Telecommunications and RF

  • Robotics and drones

  • Renewable energy infrastructure

Wherever electrons need to flow reliably, our finishes make it happen.

Why Choose The Lindgren Group?

Decades of Plating Expertise

We’ve served the most demanding industries with precision finishes for 30+ years. Our processes are proven, scalable, and continuously improved.

Advanced Equipment & Masking

We use CNC masking, precision racking, and clean finishing lines to deliver consistent, reliable results—every time.

Engineering Collaboration

Our plating engineers will review your connector designs and recommend the right metal finish, thickness, and process for your specific needs.

Regulatory & Certification Support

RoHS, REACH, ITAR, MIL-SPEC, ISO—whatever your regulatory environment requires, we’re ready.

Flexible Capacity

From R&D batches to production-scale orders, we handle short runs and long-term production with equal precision.

Request a Quote for Connector Plating Today

Let’s connect—literally. Whether you’re producing 10,000 gold-plated contacts or developing a new aerospace connector design, The Lindgren Group is here to help.