The QMA interface has a very similar performance to theSMA,but in addition it offers an easier, faster and safercoupling operation,helping customers to save significantlytime during production. The packaging density of QMA isincreased compared to SMA connectors thanks to the fact thatno torque spanner is required to fasten the coupling nut.QMA is not intermateable with SMA.QMA connectors are also available as waterproof version（IP68) and are compatible with QLF standard.
Unique snap-on coupling mechanism enables tool-free, one-hand quick insertion and removal
Eliminates the need for torque wrenches, drastically improving installation and maintenance efficiency
Provides secure mechanical locking and stable electrical connection after engagement
Ideal for high-volume production assembly and frequent maintenance scenarios
Compact design allows closer spacing between connectors compared to SMA
Significantly increases equipment packaging density, saving valuable system space
Perfect for high-density RF interface layouts in modern electronic devices
Supports 0-18GHz ultra-wide operating frequency range with a characteristic impedance of 50Ω
Center conductor contact resistance ≤3mΩ, outer conductor contact resistance ≤2mΩ, achieving low-loss signal transmission
Dielectric withstanding voltage of 1000V and insulation resistance ≥5000MΩ, ensuring safe and stable electrical operation
All-metal shielding structure effectively suppresses electromagnetic interference
Standard straight configuration as shown, with waterproof versions (IP68) available
Fully compatible with QLF industry standards
Crimp termination method provides reliable mechanical fixation with RG58 cables
Durability of ≥500 mating cycles, suitable for long-term repeated use
Operating temperature range: -40℃ ~ +85℃, adapting to various industrial and commercial working environments
High-quality Suco plating provides excellent corrosion and oxidation resistance
RoHS Certificate: Compliant
| Electrical data | Requirments | |
| Frequency range | 0-18GHZ | |
| Dieletric withstanding voltage | 1000V | |
| Characteristic impedance | 50Ω | |
| Insulation Resistance | ≧5000MΩ | |
| Contact Resistance | ||
| .Center conductor | ≦3mΩ | |
| .Outer conductor | ≦2mΩ | |
| Mechanical data | Requirments | |
| Durability (matings) | ≧500 | |
| Environmental data | Requirments | |
| Temperature range | -40℃ ~+85℃ | |
| Material data | Requirments | |
| Connector parts | Material | Plating |
| Body | Brass | Suco plated |
| Pin contacts | Brass | Gold |
| Crimp Ferrule | Brass | Suco plated |
| Insulators | Teflon | |
