SMB/SMC/SMS

SMB/SMC/SMS

These connector series offer three different coupling mechanisms: SMB has a snap-on coupling allowing quick but secure connection, and is usable up to 4 GHz. SMC has a threaded coupling for vibration proof installation, and is usable up to 10 GHz. SMS has a slide coupling which is suitable for rack and panel systems, and is usable up to 4 GHz. The impedance is controlled at 50 Ω for all types. Connector styles are available for flexible, conformable and semi-rigid cables. Versions of these series connectors are available for mounting to printed circuit boards using both thru-hole soldered and thru-hole press-fit techniques, as well as surface mount technology (SMD). Solder and crimp techniques are used to terminate these series to cables. SMB/SMC/SMS connectors find applications in all types of electronic equipment.


Mechanical Characteristics
Recommended coupling torque SMC 25-35 Ncm
Durability (mating cycles): standard type ≥ 100
Durability (mating cycles): MIL type ≥ 500
Engagement/Disengagement SMB 14 N typ.
Disengagement SMS 10 N typ.
Material: spring contacts CuBe2
Material: crimp ferrule Cu
Material: serrated lock washer CuSn6
Material: other metal parts CuZn39Pb3
Material: insulators PTFE PTFE
Material: gaskets Silicone
Finish: Inner conductor Cu1Ni2Au1.27
Finish outer conductor: Gold (standard; last digit ...1) Cu1Ni2Au0.8
Finish outer conductor: MIL gold (last digit ...2) Cu1Ni2Au1.27
Finish outer conductor: Type for printed circuits (last digit ...7) SnPb8
Finish outer conductor: Telealloy (white bronze) (last digit ...8) CuSnZn3 (Telealloy); Ag2CuSnZn.5 (Optargen)
Finish outer conductor: Nickel (last digit ...9) Cu2Ni5
Finish other metal parts: Gold (standard; last digit ...1) Cu2Ni5Au0.2
Finish other metal parts: MIL gold (last digit ...2) Cu1Ni2Au0.8
Finish other metal parts: Nickel (last digit ...9) Cu2Ni5, CuSnZn3
Climatic Characteristics
Climatic category acc. to IEC 60068 - 1 55/155/21
Electrical Characteristics
Contact resistance inner conductor ≤ 5 mΩ
Contact resistance outer conductor ≤ 2.5 mΩ
Insulation resistance ≥ 1 GΩ
Voltage proof 750 V / 50 Hz
Impedance 50 Ω
Return loss flexible cable (straight type) at 1 GHz ≥ 20.0 dB
Return loss flexible cable (straight type) at 3 GHz ≥16.5 dB
Return loss flexible cable (angle type) at 1 GHz ≥ 14.0 dB
Return loss flexible cable (angle type) at 3 GHz ≥ 12.4 dB
Frequency range up to 4 GHz SMB/SMS; 10 GHz SMC
Standards
IEC 60 169-9  
IEC 60 169-10
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