What Is Uninsulated Terminals

Uninsulated terminals—also known as bare terminals—are essential electrical connectors designed without an insulating sleeve, offering maximum conductivity, compact size, and superior crimping reliability. They are widely used in applications where secondary insulation such as heat shrink tubing, overmolding, or taping is required.

As a professional uninsulated terminal manufacturer, Qianwei Precision supplies high-quality terminals engineered for 자동차, industrial, power, and OEM electrical systems, supporting both standard models and fully customized solutions.

Key Advantages of Uninsulated Terminals

• Excellent Electrical Conductivity
  Direct metal-to-metal contact minimizes resistance and ensures stable current transmission.

• Compact & Space-Saving Design
  Ideal for high-density wiring and confined installation environments.

• Reliable Crimp Performance
  Precision-stamped structure ensures consistent crimp quality and strong mechanical retention.

• Automation-Friendly
  Designed for manual, semi-automatic, and fully automatic terminal crimping machines.

• Flexible Secondary Insulation
  Compatible with heat shrink tubing, PVC sleeves, 사출 성형, and other insulation methods.

Materials & Plating Options

To meet diverse electrical and environmental requirements, Qianwei uninsulated terminals are available in multiple material and plating combinations:

Base Materials

• Copper – Excellent conductivity for power transmission

• Brass – Balanced strength and electrical performance

• Phosphor Bronze – Enhanced spring properties and durability

Surface Plating

• Tin Plated – Cost-effective corrosion resistance

• Nickel Plated – Superior durability and high-temperature performance

• Silver Plated (Optional) – Low contact resistance for high-end applications

All materials comply with RoHS and REACH 요구 사항.

Technical Specifications

• Wire Range: AWG 22 – AWG 4 (customizable)

• Rated Current & Voltage: According to terminal type and application

• Operating Temperature: −40°C to +150°C (depending on material & plating)

• Crimping Methods:

  • Hand tools

  • Semi-automatic crimping machines

  • Fully automatic terminal machines

• Compliance: RoHS 규제 / REACH / UL (select models)

Custom specifications are available upon request.

Typical Applications

Uninsulated terminals are widely used across industries where performance and flexibility are critical:

• Automotive Wiring Harnesses

• Industrial Control Panels

• Power Distribution & Electrical Equipment

• Home Appliances

• Renewable Energy Systems (solar, 에너지 저장)

• OEM / ODM Custom Projects

Customization Capabilities of Qianwei

Qianwei Precision specializes in non-standard and application-specific terminals, offering:

• Terminal size, thickness, and structure customization

• Special materials or plating requirements

• Progressive die design and in-house tooling

• Prototyping, small-batch trials, 그리고 대량생산

• Long-term supply support for series projects

Our engineering team works closely with your drawings, 샘플, or application requirements to deliver cost-effective and production-ready solutions.

Why Choose Qianwei

• In-House Manufacturing
  Stamping, tooling, and quality control under one roof.

• Stable Quality & Consistency
  Strict process control ensures repeatable performance.

• Automation Expertise
  Terminals optimized for high-speed crimping and assembly.

• B2B-Focused Service
  Fast quotation, technical support, and export experience.

• Trusted by Global Customers
  Serving automotive, industrial, and electrical manufacturers worldwide.

자주 묻는 질문

What is the main advantage of uninsulated terminals?
Uninsulated terminals offer higher conductivity and a more compact design, making them ideal for applications requiring secondary insulation.

Can these terminals be used in automatic crimping machines?
예. Our terminals are designed for compatibility with manual, semi-automatic, and fully automatic crimping equipment.

How do I choose the right material and plating?
Selection depends on current load, environment, and application. Our engineers can recommend the optimal solution.

Do you support custom designs?
전적으로. We provide full customization from tooling development to mass production.