Overview
The SMC connector is a subminiature RF coaxial connector designed for applications requiring a compact, high-performance interface. It features a threaded coupling mechanism that provides secure, vibration-resistant connections and maintains consistent electrical performance. SMC connectors are typically available in 50 ohm and 75 ohm impedance versions, supporting broadband frequencies from DC up to 4 GHz. Their small size makes them ideal for space-constrained applications, including telecommunications, test equipment, instrumentation, network analyzers, spectrum analyzers, and oscilloscopes,missile guidance, drones, and satellite payload systemsand military systems. Available in both straight and right-angle configurations, as well as PCB-mount options, SMC connectors deliver reliable, low-reflection signal transmission in demanding environments.
Features
Meets the interface dimensions specified by MIL-STD-348.
Threaded coupling provides secure, vibration-resistant connections for demanding applications.
Well-suited for semi-rigid or miniature flexible coaxial cables.
Applications
Antennas
PC/LAN
Telecommunications
Instrumentation
missile guidance, drones, and satellite payload systems
network analyzers, spectrum analyzers, and oscilloscopes
electronic warfare, military radios, and secure communication links
Specification
Cable Type | RG174 |
| Body Plating | Nickel |
| Body Material | Brass |
| Contact Plating | Gold |
| Contact Material | Phosphor bronze |
| Insulator Material | PTFE |
| Cable Termination | Crimp |
| Coupling Mechanism | Thread |
HS Code | 8636909000 |
Frequency (Max GHz) | 4 |
Gender | Female |
Impedance (Ohms) | 50 |
Size Category | Miniature |
Orientation | Straight |
Temperature Range | -65 to 165 ° C |
Mating Cycles | 500 Min |
Interface Specification | IEC 60169-9 |
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 impedance, and why is 50 Ω or 75 Ω important?
Impedance matching prevents signal reflection and power loss. 50 Ω: Standard for RF communication, test equipment, aerospace, defense. 75 Ω: Standard for broadcast, video, and cable TV applications.
What materials are RF connectors made of?
Body: Brass, stainless steel, or beryllium copper (with nickel, gold, or silver plating). Insulator: PTFE, PE, or advanced low-loss dielectrics. Contacts: Gold-plated brass or beryllium copper for low resistance and durability.
Are RF connectors weatherproof?
Some RF connectors are designed with gaskets and sealing (e.g., N-type, 4.3-10) for outdoor telecom, antennas, and harsh environments. Indoor lab connectors (e.g., SMA, BNC) are usually not weatherproof unless specified.
What’s the difference between male and female RF connectors?
Male: Has a center pin and usually an outer thread or bayonet. Female: Has a receptacle (socket) for the center pin and matching thread. Some connectors (like SMA) can be confusing because “reverse polarity” (RP-SMA) swaps pin/socket configuration.
