Filter By

Product Category -

SMC (SubMiniature version C) connectors are threaded, compact coaxial connectors designed for reliable performance in space-constrained applications. Operating up to 10 GHz, these 50Ω impedance connectors combine the durability of threaded coupling with a smaller form factor than SMA connectors. Originally developed for military and aerospace applications, SMC connectors are now widely used in telecommunications, medical equipment, and industrial systems where vibration resistance and secure connections are critical. Their stainless steel construction and gold-plated contacts ensure excellent performance in demanding environments.

Base Products

SMC Connector Series

SMC Connector Series

SMC Connector Series,DC-6GHz,50Ω

Category Insights

SMC connectors are typically rated for frequencies up to 10 GHz, bridging the gap between larger SMA connectors and smaller SMP interfaces. This makes them suitable for various RF applications including wireless communications, test equipment, and radar systems. While they can function beyond 10 GHz, signal integrity may degrade compared to precision connectors specifically designed for higher frequencies. The actual performance depends on factors like connector quality, proper installation, and cable assembly techniques.
The SMC's threaded coupling provides superior vibration resistance and mechanical stability compared to snap-on connectors like SMB. The fine threads (36 UNEF thread) allow for secure mating in high-shock environments while maintaining a compact size. This makes SMC ideal for aerospace, military, and mobile applications where connectors must withstand harsh conditions. However, the threading requires more installation time than push-on connectors, which may be a consideration for high-volume production environments.
SMC connectors are about 30% smaller than SMA while offering similar threaded coupling benefits. While SMA connectors typically support higher frequencies (up to 18 GHz vs. SMC's 10 GHz), SMC provides better space savings for compact designs. Both offer 50Ω impedance, but SMC's smaller size makes it preferable for high-density applications. SMA remains more common for general-purpose use, while SMC excels in specialized military and aerospace applications where size and reliability are paramount.
SMC connectors are widely used in military communications systems, avionics equipment, and missile guidance systems due to their vibration resistance. They're also found in medical devices like MRI machines, industrial automation systems, and satellite communications equipment. Their combination of small size and reliable performance makes them particularly valuable in portable field equipment and space-constrained electronic enclosures where both size and durability are critical factors.
Proper torque application (typically 7-10 in-lbs) is essential to prevent damage to the fine threads while ensuring good electrical contact. The small size requires careful handling during assembly to avoid cross-threading. Environmental sealing should be considered for outdoor applications, as standard SMC connectors aren't inherently waterproof. For high-vibration applications, additional strain relief may be necessary. Unlike some other miniature connectors, SMC offers excellent mating cycle durability (typically 500+ cycles) when properly maintained.