SMC connector

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SMC Connectors: 3-way male, and female-to-female.
Type RF coaxial connector
Designed 1960s
Manufacturer Various
Cable Coaxial
Passband Typically 0–10 GHz
Signal 50-ohm and 75-ohm

SMC (SubMiniature version C) connectors are coaxial RF connectors developed in the 1960s. The interface specifications for the SMC and many other connectors are referenced in MIL-STD-348.[1] They use a #10-32 UNF threaded interface (screw type). They offer electrical performance from DC to 10 GHz. Female (a.k.a. plug) SMC connectors have a socket for the center contact, and male (a.k.a. jack) SMC connectors have a pin for the center contact. SMC jack connectors have an external thread while SMC plug connectors have the mating hex nut. Available in 50-Ohm and 75-Ohm characteristic impedance, they provide an interconnect means for small form factor coaxial cables (e.g. 50-Ohm RG-174, 75-Ohm RG-179) and printed circuit boards where small footprint is important.

The term Subvis connector appears to be European usage; the connectors appear to be electrically and mechanically equivalent to SMC.[2]

See also[edit]


  1. ^ RADIO FREQUENCY CONNECTOR INTERFACES FOR MIL-DTL-3643, MIL-DTL-3650, MIL-DTL-3655, MIL-DTL-25516, MIL-PRF-31031, MIL-PRF-39012, MIL-PRF-49142, MIL-PRF-55339, MIL-DTL-83517 (B with change 3 ed.). US DOD. 2017-01-22.
  2. ^ Discussion of SMC/Subvis equivalence