3.5mm Male Crimping Connector for LMR240 Coaxial Cable

Overview

The 3.5 mm connector is a precision 50 Ohm RF coaxial connector designed for high-frequency performance up to 34 GHz. It was developed as a durable, precision-grade upgrade to the SMA series, offering excellent electrical repeatability and mechanical stability for test and measurement, microwave, and communication systems. With a robust air-dielectric structure and stainless-steel body, the 3.5 mm connector delivers low VSWR, minimal insertion loss, and superior return loss across its entire frequency range. Its threaded coupling mechanism ensures secure mating even under vibration, while maintaining compatibility with 2.92 mm (K) and SMA connectors. Ideal for precision instrumentation, radar, and 5G/mmWave applications, the 3.5 mm connector provides a reliable and long-life interface for demanding RF and microwave environments.

Features

• Frequency range: DC – 34 GHz

• 50 Ohm impedance for precise RF signal transmission

• Low VSWR (< 1.15 typical) and low insertion loss

• Threaded coupling ensures robust, vibration-resistant connection

• Air dielectric construction for mode-free performance

• Stainless-steel housing, gold-plated BeCu contacts for high durability

• Intermateable with 2.92 mm and SMA connectors

• Available in straight, right-angle, bulkhead, and flange-mount versions

• Designed for RF testing, radar, satellite, and communication systems

Applications

• Wireless Communication Systems

• Smart meters and remote monitoring devices

• Radar & Military Equipment

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• Telecommunications & 5G

• Test & Measurement Equipment

• Robotics and industrial automation requiring RF links

• GPS & Navigation Systems

Specification

FAQ

Sample Delivery Time

Regular models require 15 days, while some complex connectors require 25 days.

Sample Fee

Most RF connectors are CNC-machined parts and do not require mold-making.

However, each part needs to be fine-tuned on the CNC machine. Typically, a single sample costs $200.

This fee will be refunded after a 5K bulk order.

Guarantee

Brass RF connectors come with a one-year warranty.

Stainless steel connectors come with a three-year warranty.

The lifespan also depends on the contact material—beryllium contacts offer better durability.

ROHS & REACH Compliance

Our products fully comply with ROHS & REACH regulations.

Does LENORF Offer Military-Grade Products?

Yes. We are honored to provide military-grade products with exceptionally stable quality.

MOQ (Minimum Order Quantity)

Regular connectors: 500 PCS

Adapters: 100 PCS

Military connectors: 100 PCS

Materials

Common materials include:

Body: Brass, stainless steel

Insulator: PTFE, PEEK

Contacts: Brass, phosphor bronze, beryllium copper

Other: Aluminum, titanium alloy

What is VSWR, and why does it matter?

VSWR (Voltage Standing Wave Ratio) indicates signal reflection. Ideal: 1.0 (perfect match). Lower VSWR means less signal loss and distortion.

What are typical applications of RF connectors?

Telecom (5G, LTE, satellite) Aerospace & defense (radar, avionics, secure comms) Test & measurement (network/spectrum analyzers) Broadcast & video distribution Automotive radar and IoT devices Medical imaging & equipment