Cannon's SMB Snap-on and SMC Screw-on subminiature coaxial connectors are engineered for high-performance, high-reliability applications in military and commercial equipment. SMB connectors offer rapid connect/disconnect capabilities up to 4 GHz, while SMC connectors provide a low VSWR under vibration and matched 50-ohm impedance up to 12.4 GHz. These connectors are compatible with MIL-C-39012 and various international standards. FAKRA SMB connectors are also available for automotive applications.
| Parameter | SMB | SMC |
|---|---|---|
| Frequency Range | 0 to 4.0 GHz | 0 to 12.4 GHz |
| Voltage Rating (Sea Level) | 300 Vrms (RG196/U), 400 Vrms (RG188/U) | 300 Vrms (RG196/U), 400 Vrms (RG188/U) |
| Voltage Rating (21km) | 75 Vrms (RG196/U), 100 Vrms (RG188/U) | 75 Vrms (RG196/U), 100 Vrms (RG188/U) |
| Insulation Resistance | 1000 M minimum | 1000 M minimum |
| Contact Resistance (Center) | 6.0 m maximum initial | 6.0 m maximum initial |
| Contact Resistance (Outer) | 1.0 m maximum initial | 1.0 m maximum initial |
| Contact Current Rating | 1.5 A dc maximum | 1.5 A dc maximum |
| Insertion Loss | 0.25 dB maximum @ 4 GHz | 0.25 dB maximum @ 4 GHz |
| RF Leakage | -55 dB minimum @ 2-3 GHz | -60 dB minimum @ 2-3 GHz |
| Engagement Design | Snap-on | Screw-on |
| Engagement Forces | 14 lbs. max. (initial), 14 lbs. max. (after 500 matings) | N/A |
| Engagement Disengagement Forces | 2 lbs. min. (disengagement) | N/A |
| Mating Torque | N/A | 16 in. oz. max. |
| Coupling Nut Torque | N/A | 60-70 in.oz |
| Locknut Torque | N/A | 80-90 in. oz |
| Cable Retention | Equal to cable breaking strength | 14 lbs. min. |
| Temperature Rating | -65 C to 165 C | -65 C to 165 C |
| Vibration | 15 G's (test condition B) | 20 G's (test condition D) |
| Shock | 75 G's @ 6ms (test condition B) | 100 G's @ 6ms (test condition C) |
| Connector Durability | 500 matings minimum | 500 matings minimum |
