TE Connectivity QMA Connectors

Introduction

TE Connectivity QMA connectors are compact RF coaxial connectors designed for quick, reliable signal connections. Their snap-on coupling mechanism provides a faster alternative to threaded SMA connectors while supporting high-frequency RF applications.

Part Description

QMA connectors from TE Connectivity use a quick-lock, snap-on interface that allows users to connect and disconnect RF cables and components rapidly. Unlike threaded connector styles, the QMA format can reduce installation time and simplify servicing in dense equipment layouts.

These connectors provide RF performance up to 18 GHz, making them suitable for many microwave, communication, test, and instrumentation systems. Selected versions are rated to IP67, providing protection against dust ingress and temporary water immersion when properly mated. TE Connectivity QMA connectors are also RoHS compliant, supporting environmentally conscious electronic product designs.

Applications

Potential applications for TE Connectivity QMA connectors include:

• RF and microwave signal interconnections
• Antenna feed lines
• Cellular and wireless communication equipment
• GPS and GNSS receiver systems
• RF test and measurement instruments
• Network analyzers and laboratory test fixtures
• Radar and surveillance equipment
• Compact RF modules and enclosures
• Outdoor communication systems using IP67-rated versions
• High-frequency cable assemblies

Industries

Possible industries using QMA connectors include:

• Telecommunications
• Aerospace and defense
• Automotive electronics
• Industrial automation
• Test and measurement
• Wireless infrastructure
• Transportation and rail
• Medical electronics
• Research laboratories
• Public safety and emergency communications

Usage Ideas

1. Portable RF Test Adapter
   Build a compact test adapter with QMA interfaces for quickly connecting antennas, spectrum analyzers, and RF signal generators.

2. Weather-Resistant Antenna Enclosure
   Use IP67-rated QMA connector versions on an outdoor wireless sensor or antenna enclosure to provide a protected RF cable connection.

3. Modular Microwave Prototype Platform
   Create interchangeable RF filter, amplifier, and attenuator modules with QMA connectors for rapid laboratory configuration changes.

Conclusion

TE Connectivity QMA connectors provide a practical high-frequency interconnect solution for systems requiring fast connection cycles, compact packaging, and dependable RF performance. With operation up to 18 GHz, optional IP67 protection, and RoHS compliance, they are well suited to demanding communication, test, industrial, and outdoor RF applications.