The SIPU RF Technology SBMA Male Flange Mount Connector (Model: SIPU-SBMA-JFB1G-T1) is a sub-miniature blind-mate RF interface that is precision engineered for demanding high frequency environments of up to 28 GHz. SIPU is a small form factor solution providing enterprise grade performance using 25+ years of RF manufacturing knowledge.
The product has a characteristic impedance of 50Ω and exhibits excellent electrical performance with a VSWR of ≤1.1+0.03F(GHz) and insertion loss as low as ≤0.05√F(GHz)dB. Its flange mount design allows for a stable panel mounting with a high degree of mechanical stability. Designed to handle 675V dielectric voltage and achieve insulation resistance of ≥5,000MΩ, it satisfies rigorous reliability demands for telecommunications, aerospace, defence and precision test equipment.
| Parameter | Value |
|---|---|
| Model | SIPU-SBMA-JFB1G-T1 |
| Characteristic Impedance | 50Ω |
| Frequency Range | DC-28 GHz |
| VSWR | ≤1.1+0.03F(GHz) |
| Insertion Loss | ≤0.05√F(GHz)dB |
| Dielectric Withstanding Voltage | 675V |
| Insulation Resistance | ≥5,000MΩ |
| Center Contact Resistance | ≤8.0mΩ |
| Outer Contact Resistance | ≤3.0mΩ |
| Mating Cycles | ≥500 cycles |
| Operating Temperature | -65℃ to +125℃ |
| Interface Gender | Male |
| Outer Conductor Material | Stainless Steel |
| Center Conductor Material | Bronze, Gold Plated |
| Dielectric Material | PTFE |
The SBMA Male Flange Mount Connector provides better high frequency performance than traditional BMA connectors. Low insertion loss guarantees minimum signal deterioration over the whole DC-28 GHz range. The high precision manufacturing provides reliable and repeatable VSWR performance, ideal for phase sensitive applications.
This ruggedised connection, constructed from high‑quality stainless steel, has passed extensive environmental testing and is designed for reliable performance in demanding environments. Salt spray resistant up to 192 hours for dependable operation in maritime and corrosive settings. The operating temperature range from -65℃ to +125℃ allows for operation in extreme thermal environments of aerospace and outdoor applications.
Flange mount design for secure connection to provide dependable placement on the panel. Rugged vibration resistance for demanding mobile and airborne applications. The connection is designed for a mating cycle life of ≥500 operations and can withstand repeated maintenance cycles in modular systems.
Stainless steel outer conductors offer excellent shielding and corrosion resistance. Bronze center conductors with gold plating ensure low contact resistance and long-term reliability. PTFE dielectric material provides superior thermal stability and low loss characteristics across the frequency range.
The SBMA Male Flange Mount Connector serves as the critical interconnect in phased array radar modules. Its mechanical rigidity withstands high-vibration aerospace environments while maintaining signal integrity. The secure flange mounting ensures stable connections in mission-critical defense systems.
Automated test fixtures benefit from the connector's blind-mate convenience and durability. With ≥500 mating cycles, it supports rapid device swaps in production testing environments. Low insertion loss and stable VSWR ensure accurate measurements in RF characterization applications.
5G infrastructure and satellite communication payloads leverage the compact footprint and high-frequency performance. The flange mount configuration allows for high-density installations in space-constrained enclosures. Consistent electrical performance supports reliable data transmission in telecommunications networks.
Precision RF systems in industrial applications require stable and repeatable performance. The connector's robust construction withstands electromagnetic interference and mechanical stress. Its reliable operation supports continuous industrial processes requiring minimal downtime.

SIPU RF Technology implements comprehensive quality control throughout the manufacturing process. Each batch undergoes dielectric withstanding voltage and insulation resistance testing using precision instruments. Plating thickness and bonding strength are verified to ensure long-term contact reliability.

RoHS environmental compliance testing is conducted for every production batch. The manufacturing process follows ISO 9001 certified quality management standards. Strict dimensional inspection ensures consistent mechanical interface performance across all units.
Electrical performance parameters are guaranteed through precision structural design rather than unit-level VSWR and insertion loss testing. This approach ensures reliable performance while maintaining cost-effectiveness for volume applications.

Q: What are the supported frequencies of this connector?
A: The SIPU-SBMA-JFB1G-T1 is DC to 28 GHz which covers most contemporary RF and microwave applications such as 5G communications and test equipment.
Q: What is the mating cycle life of this connector?
A: The connector is rated for ≥500 mating cycles, ensuring a long service life in applications that need frequent connection and separation.
Q: What is the temperature range of this connector?
A. The working temperature range is -65℃ to +125℃ for harsh environments in aerospace, outdoor, and industrial applications.
Q: What materials are utilised for construction?
A: The outside conductor is stainless steel, the dielectric is PTFE and the central conductor is gold plated bronze – for best electrical performance and longevity.
Q: Is this connector suitable for harsh environments?
A: Yes, with salt spray resistance up to 192 hours and robust mechanical construction, it performs reliably in marine, corrosive, and high-vibration environments.
Q: What is the characteristic impedance?
A: The connector maintains a standard 50Ω characteristic impedance for compatibility with most RF systems and equipment.

Our SBMA Male Flange Mount Connector's team is available to assist with product selection, custom configurations, and technical support. Contact us today at info@sipuconn.com for inquiries, quotations, or sample requests.
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