SIPU RF Technology Co., Ltd. introduces the SMB Male Thread Mount Connector for RG178 Cable (Model: SIPU-SMB-JY2), a precision-engineered RF connectivity solution developed for high-reliability applications. The connection has a characteristic impedance of 50Ω and a frequency range from DC to 4GHz with a VSWR of less than or equal to 1.34.
The threaded mounting mechanism with snap-lock connection provides better vibration resistance and anti-loosening performance. Gold plated brass conductors provide good conductivity. The PTFE dielectric maintains low loss and great insulation in an operating temperature range of -65℃ to +125℃. Durability is 500 mating cycles and insertion loss is ≤0.06√F(GHz)dB. This connector meet the demanding requirements of aerospace, telecommunications and industrial electronics applications.
| Parameter | Value |
|---|---|
| Model | SIPU-SMB-JY2 |
| Characteristic Impedance | 50Ω |
| Frequency Range | DC-4GHz |
| VSWR | ≤1.34 |
| Insertion Loss | ≤0.06√F(GHz)dB |
| Dielectric Withstanding Voltage | 500V |
| Insulation Resistance | ≥1,000MΩ |
| Center Contact Resistance | ≤6.0mΩ |
| Outer Contact Resistance | ≤1.0mΩ |
| Mating Cycles | 500 times |
| Operating Temperature | -65℃ to +125℃ |
| Orientation | Straight |
| Interface Gender | Male |
| Outer Conductor Material | Brass with gold plating |
| Center Conductor Material | Brass with gold plating |
| Dielectric Material | PTFE |
The miniature, space-saving design makes this connector ideal for your compact equipment, precision instruments, and wireless terminals. When installation space is limited, the SMB Male Thread Mount Connector for RG178 Cable provides maximum performance in minimal footprint.
This lightweight construction reduces overall system weight while maintaining robust mechanical integrity.
You benefit from a combination of snap-lock coupling and threaded mounting that provides enhanced vibration resistance. This dual retention mechanism ensures anti-loosening performance even in high-vibration environments.
The threaded mount creates a secure bulkhead or panel-mount configuration that prevents accidental disconnection. Your critical connections remain stable throughout the operational lifecycle.
The gold-plated brass inner and outer conductors deliver excellent conductivity and oxidation resistance. You can rely on consistent performance even in harsh environmental conditions.
The PTFE dielectric ensures low loss and superior insulation properties. This combination supports clean, stable high-frequency signal transmission across the entire 4GHz frequency range.
Designed to meet both military and international standards, this connector maintains a precise 50Ω characteristic impedance. The standardized interface ensures broad compatibility with existing RF systems.
You can easily integrate this connector into your existing infrastructure without extensive modifications.
The SMB Male Thread Mount Connector for RG178 Cable serves as a reliable bulkhead interface in base stations and distributed antenna systems. The threaded mount prevents loosening due to tower sway and wind vibration.
Your signal integrity remains consistent even under continuous mechanical stress.
In flight control systems and cockpit communication modules, this connector provides the lightweight profile essential for aerospace applications. The secure threaded connection withstands the extreme vibrations encountered during flight operations.
The wide operating temperature range ensures reliable performance from ground operations to high-altitude flight conditions.
In MRI and ultrasound signal processing units, you need the necessary shielding and low-loss performance for high-fidelity imaging data. This connector maintains signal integrity despite electromagnetic interference common in medical environments.
Industrial gateways and sensor networks benefit from the vibration-resistant design. The connector connects internal PCB-mounted radios to external antennas where mechanical stability is critical.
Your data transmission remains uninterrupted in factory automation and process control systems.

SIPU RF Technology implements rigorous quality control measures to ensure consistent performance. Each batch undergoes comprehensive electrical testing using insulation and dielectric withstanding voltage test instruments to verify the 500V dielectric withstanding voltage and ≥1,000MΩ insulation resistance specifications.

Plating quality inspection measures both plating thickness and adhesion strength for every production batch. You receive connectors with consistent gold plating quality that resists oxidation and corrosion throughout the product lifecycle.
Every batch undergoes RoHS environmental compliance testing. This ensures your products meet international environmental standards and regulatory requirements.
Dimensional inspection using precision measurement equipment verifies that thread pitch and contact dimensions meet specifications for proper mating with your equipment.

Q: What makes the threaded mount different from standard SMB connectors?
A: The threaded mounting mechanism provides maximum mechanical stability for panel-mount and bulkhead configurations. This design prevents accidental disconnection in high-vibration environments and creates a more secure connection than snap-on interfaces alone.
Q: Can this connector work with cables other than RG178?
A: This connector is specifically engineered to terminate with RG178 cable. Using it with different cable types may compromise electrical performance and mechanical fit. For other cable specifications, please contact our engineering team for alternative solutions.
Q: What testing is performed on each connector?
A: Each batch undergoes electrical testing for dielectric withstanding voltage and insulation resistance. We also perform plating quality inspection for thickness and adhesion, along with RoHS compliance testing. These measures ensure consistent quality across all production runs.
Q: How do I ensure proper installation?
A: Proper crimping of the center and outer conductors to the RG178 cable is essential. Follow the recommended torque specifications for the threaded mount to ensure a secure connection without damaging the connector body. Contact our technical support team for detailed installation guidelines.
Q: What is the expected service life?
A: The connector is rated for 500 mating cycles under normal operating conditions. Actual service life depends on your application environment, mating frequency, and proper installation practices. The gold-plated contacts resist oxidation for long-term reliability.
Q: Is the connector suitable for outdoor applications?
A: Yes, the gold-plated brass construction and PTFE dielectric provide excellent resistance to environmental conditions. However, proper environmental sealing at the panel mount point is recommended for optimal protection against moisture ingress.

Ready to enhance your RF connectivity with the SMB Male Thread Mount Connector for RG178 Cable?Contact us at info@sipuconn.com for quotations, samples, or application consultation.
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