The QMA connector is a 50 Ω miniature RF coaxial connector designed as a quick-lock version of the SMA. It retains the electrical performance of the SMA but replaces the threaded coupling with a 360° snap-lock mechanism, enabling connection or disconnection in seconds.
| Product Specifications | |||
| Product Specifications | Connector Impedance | 50 Ohm | |
| Frequency Range | DC ~ 6GHz | ||
| Working Voltage | 480V | ||
| Dielectric Withstanding Voltage | 1500V | ||
| Insulation Resistance | ≥5000 MΩ | ||
| Center Contact Resistance | ≤3 mΩ | ||
| Outer Contact Resistance | ≤2.5 mΩ | ||
| VSWR | Straight≤1.2; Right Angle≤1.35 | ||
| Insertion Loss | ≤0.25dB | ||
| Mating Cycles | ≥500 | ||
| Operating Temperature | -65℃~ 125℃ | ||
| Materials & Plating | Component | Material | Plating/Coating |
| Body | Brass | Nickel/Ternary-alloy Plated | |
| Pin contacts | Brass | Gold | |
| Insulators | PTFE | - | |
| Coupling Nut | Brass | Nickel Plated | |
| Crimp ferrules | Copper | Nickel Plated | |
| Product Specifications | |||
| Product Specifications | Connector Impedance | 50 Ohm | |
| Frequency Range | DC ~ 6GHz | ||
| Working Voltage | 480V | ||
| Dielectric Withstanding Voltage | 1500V | ||
| Insulation Resistance | ≥5000 MΩ | ||
| Center Contact Resistance | ≤3 mΩ | ||
| Outer Contact Resistance | ≤2.5 mΩ | ||
| VSWR | Straight≤1.2; Right Angle≤1.35 | ||
| Insertion Loss | ≤0.25dB | ||
| Mating Cycles | ≥500 | ||
| Operating Temperature | -65℃~ 125℃ | ||
| Materials & Plating | Component | Material | Plating/Coating |
| Body | Brass | Nickel/Ternary-alloy Plated | |
| Pin contacts | Brass | Gold | |
| Insulators | PTFE | - | |
| Coupling Nut | Brass | Nickel Plated | |
| Crimp ferrules | Copper | Nickel Plated | |