Product Overview
The MNRC-1/2-DM is a high-power 7/16 DIN Male Straight Clamp RF connector designed for 1/2" coaxial cables. Featuring a robust thread coupling mechanism, this 7/16 (DIN) series is specifically engineered for applications requiring high power handling, such as broadcast systems, radar monitoring, and base station infrastructure. With a low VSWR of ≤1.10 and excellent airtight properties, it ensures minimal attenuation and low intermodulation (PIM) in multi-band frequency environments. This connector offers an economic yet high-reliability solution for critical microwave communication fields.
Technical & Mechanical Specifications
| Parameter Item | Specification Details |
|---|---|
| Model Number | MNRC-1/2-DM |
| Interface Standard | According to IEC 60169-4 |
| Characteristic Impedance | 50 ohm |
| Frequency Range | DC - 3 GHz |
| Dielectric Withstanding Voltage | ≥ 4000V RMS, 50Hz, at sea level |
| Dielectric Resistance | ≥ 10000M ohms |
| Contact Resistance | Center ≤ 1.0 mΩ / Outer ≤ 0.30 mΩ |
| VSWR | ≤ 1.10 |
| Durability (Mating Cycles) | ≥ 500 cycles |
| Body Material & Plating | Brass / Ni or Tri-Alloy Plating |
| Insulator Material | PTFE |
| Center Conductor | Phosphor Bronze or Ag Plating |
| Coupling Nut | Brass Ni |
| Temperature Range | -40°C to +85°C |
Frequently Asked Questions
- Q1: Why is the 7/16 DIN interface preferred for broadcast and base stations?
- A: The 7/16 DIN connector is physically larger and more robust than N-type connectors, allowing it to handle much higher power levels and provide superior intermodulation (PIM) performance. Its threaded coupling ensures an airtight seal, critical for outdoor high-power transmitters.
- Q2: What is the benefit of ≥ 4000V Dielectric Withstanding Voltage in this series?
- A: A 4000V RMS rating indicates exceptional insulation strength. In high-power broadcast and television launch systems, this prevents electrical breakdown and arcing, ensuring the safety and continuity of signal transmission under high peak voltages.
- Q3: How does the ≤ 1.10 VSWR affect my system's efficiency?
- A: A Low VSWR (≤ 1.10) means extremely high impedance matching efficiency. This reduces the amount of power reflected back to the source, maximizing signal throughput to the antenna and preventing heat generation that could damage the feeder cable or transmitter.
- Q4: Why is Ag (Silver) plating used on the center conductor?
- A: Silver provides the highest electrical conductivity of all metals. By Ag plating the phosphor bronze center contact, we achieve minimal contact resistance (≤ 1.0 mΩ), which is essential for maintaining low attenuation and reducing passive intermodulation (PIM).
- Q5: Can this connector be used in radar and microwave communication systems?
- A: Absolutely. Its sturdy mechanical design, high reliability, and excellent shielding performance make it ideal for radar monitoring and microwave links, where signal integrity and durability under extreme weather conditions (-40°C to +85°C) are paramount.
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