CA-SMRNMA020 Right Angle/N-Type Male Connector
Overview
The CA-SMRNMA020 right-angle N-type male connector is a specialized RF component designed for high-frequency signal transmission in constrained spaces. Its 90-degree design allows for compact installations where straight connectors would cause cable strain or require excessive clearance. As part of the N-type connector family standardized in the 1940s, it maintains compatibility with other N-series interfaces while offering the mechanical advantages of angled connectivity. Commonly used in base stations, military communications, and medical devices, this connector meets MIL-STD-348B standards for performance. The gold-plated beryllium copper contacts ensure low insertion loss (<0.2 dB typical) and stable impedance characteristics across its 0-11 GHz operational range, making it suitable for both analog and digital signals.
Structure and Working Principle
The connector consists of three primary components: a threaded nickel-plated brass outer shell for mechanical coupling, a PTFE dielectric insulator for maintaining 50Ω impedance, and a gold-plated center conductor for signal transmission. The right-angle design is achieved through precision machining of the connector body, which routes the center conductor at a perpendicular angle without impedance discontinuity. When mated with a compatible female connector, the threaded coupling mechanism provides both mechanical stability and consistent electrical contact. The design includes an anti-rotation feature to prevent cable twisting during installation. Some variants incorporate O-rings or gaskets for environmental sealing, with IP67-rated versions capable of withstanding temporary immersion.
Key Features
1. Space-saving right-angle configuration reduces installation footprint by approximately 40% compared to straight connectors 2. Superior VSWR performance (typically <1.25:1 up to 6 GHz) ensures minimal signal reflection 3. Corrosion-resistant materials allow operation in temperatures from -55°C to +155°C 4. Reusable design withstands 500+ mating cycles without significant degradation Premium versions feature enhanced durability with stainless steel coupling nuts and extended gold plating (≥50μ" on contacts). The connector's mechanical design includes strain relief to prevent cable damage during repeated bending, with some models supporting cable diameters up to 10mm.
Application Areas
Telecommunications: Base station antennas, microwave links, and distributed antenna systems (DAS) frequently employ these connectors due to their reliable performance in outdoor environments. The right-angle configuration is particularly valuable for tower-mounted equipment where space optimization is critical. Industrial and Medical: Test equipment, MRI machines, and industrial RF sensors utilize these connectors for their stable electrical characteristics. In radar systems, they provide compact interconnections between modules while maintaining signal integrity at high frequencies.
Maintenance and Precautions
Regular inspection should check for contact oxidation, thread damage, and insulator deformation. Cleaning with isopropyl alcohol and a lint-free cloth is recommended for maintaining electrical performance. Never use lubricants unless specifically approved for RF connectors. During installation, hand-tighten plus a quarter-turn with a wrench is sufficient - excessive torque can deform the interface. For outdoor applications, apply dielectric grease to the mating surfaces if not using pre-sealed versions. Always verify the connector's frequency rating matches the application requirements to prevent signal degradation.
B2B Procurement Guide
When sourcing these connectors commercially, verify compliance with relevant standards (MIL-STD-348, IEC 60169-16). Lead times for custom configurations (e.g., specific cable entry diameters or specialized plating) typically range 4-8 weeks. Bulk purchases (100+ units) often qualify for 15-30% discounts. Key specifications to confirm include: frequency range, impedance (typically 50Ω), VSWR tolerance, mating interface dimensions, and environmental ratings. Reputable manufacturers provide test reports for insertion loss and durability. For critical applications, consider ordering sample units for performance validation before large-scale procurement.