Description
 The SMZ Female (Jack) Right-Angle PCB Mount Solder Connector is a specialized 75-Ohm RF interface designed for board-level applications where vertical clearance is limited. Widely recognized as the BT43 connector, the SMZ series is the robust 75-Ohm evolution of the SMB design, specifically optimized for the rigorous demands of E1, E3, and DS3 digital transmission. The 90-degree right-angle configuration allows for horizontal mating, keeping the mated cable assembly parallel to the PCB surface. This is critical for high-density stacking of boards and for use in shallow equipment chassis where vertical height is a constraint.
This connector is designed for through-hole soldering, providing a high-strength mechanical bond to the printed circuit board. It utilizes a snap-on coupling mechanism that ensures a secure “click-lock” mating, which is vibration-resistant and tool-free. Manufactured with a high-grade gold-plated brass body and premium PTFE (Teflon) insulation, it delivers exceptional signal integrity and low return loss from DC up to 2 GHz. Its design ensures a stable electrical path that protects sensitive digital data streams from signal reflection and impedance mismatches.
Key Technical Advantages
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Low-Profile 90° Integration: Minimizes the vertical height required on the PCB, allowing for slim enclosure designs and efficient multi-board stacking in equipment racks.
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75-Ohm System Integrity: Specifically calibrated for telecommunications standards, preventing data errors and signal reflections in high-capacity digital circuits.
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Vibration-Proof Snap-On Lock: The SMZ (BT43) interface offers a more robust mechanical mating than standard SMB connectors, maintaining constant contact in active exchange environments.
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Robust Mechanical Stability: The multi-leg through-hole design provides superior structural grounding, protecting the solder joints from the torque and tension of mated cables.
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Superior Thermal Stability: Equipped with a high-grade PTFE dielectric that preserves its internal geometry and electrical properties during wave or hand soldering processes.
Key Features
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Interface Type: SMZ Female (Jack) with 75-Ohm snap-on coupling (BT43 Standard).
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Orientation: 90° Right Angle for low-profile horizontal mating.
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Mounting Style: Through-Hole (THT) PCB Solder Mount.
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Premium Construction: Features a gold-plated brass body and beryllium copper contact for maximum conductivity and corrosion resistance.
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Industrial Application: Ideal for Digital Distribution Frames (DDF), telephony racks, and modular telecommunications exchange equipment.
Technical Summary
| Parameter | Specification |
| Impedance | 75 Ohm |
| Frequency Range | DC – 2 GHz (Optimized for Telephony) |
| Body Material | Brass (Gold Plated) |
| Contact Material | Beryllium Copper (Gold Plated) |
| Orientation | 90° Right Angle |
| Insulator | PTFE (Teflon) |
| Operating Temp | -40°C ~ +85°C |







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