Key Features of SMP PCB Connectors
Understanding the technical attributes of SMP PCB connectors can help you select the right variant for your specific use case. Below are the critical features supported by top-tier SMP connectors such as those from SV Microwave, Amphenol RF, and Pasternack:
Electrical Specifications
Impedance: 50 ohms (standard for RF applications)
Frequency Range: DC to 26.5 GHz (standard), extended designs up to 40 GHz or 65 GHz for mini-SMP versions
Voltage Rating: Up to 500 VRMS dielectric withstanding voltage
Shielding Effectiveness: ≥ -80 dB (DC to 3 GHz), ≥ -65 dB (3 to 26.5 GHz)
VSWR (Voltage Standing Wave Ratio): Typically 1.2 max up to 18 GHz, ensuring minimal signal reflection
Mechanical Characteristics
Coupling Mechanism: Push-on or snap-on for fast, tool-less mating
Detent Types:
Smooth Bore: Low engagement force, high mating cycles (≥1000)
Limited Detent: Moderate retention, mating cycles ≥500
Full Detent: Strong retention, mating cycles ≥100
Mating Cycles: Varies by detent type, from 100 to 1000+ cycles
Insertion & Withdrawal Forces: Optimized for ease of use without compromising retention
Mounting Types: Through-hole, surface mount, end launch, edge launch, and vertical launch
