SIPU RF Technology offers the SMP Female to Female Adapter (Model: SIPU-SMP-KK129), a precision subminiature push-on connector for demanding microwave applications. This adapter works from DC to 40 GHz with a characteristic impedance of 50Ω and has VSWR < 1.5 across its frequency range.
SIPU has over 25 years of experience in RF manufacturing and manufactures this adapter to fulfil strict electrical and mechanical criteria. 12.9 mm ultra-compact length optimises board space in high density systems. Contacts are gold plated beryllium bronze for reliable signal transmission with center contact resistance ≤6.0 mΩ and outside contact resistance ≤2.0 mΩ. Low Insertion loss of ≤0.07√F(GHz) dB ensures that your mission important RF links work reliably.
| Parameter | Value |
|---|---|
| Model | SIPU-SMP-KK129 |
| Characteristic Impedance | 50Ω |
| Frequency Range | DC–40 GHz |
| VSWR | ≤1.5 |
| Insertion Loss | ≤0.07√F(GHz) dB |
| Dielectric Withstanding Voltage | 500 V |
| Insulation Resistance | ≥5,000 MΩ |
| Center Contact Resistance | ≤6.0 mΩ |
| Outer Contact Resistance | ≤2.0 mΩ |
| Mating Cycles | ≥500 |
| Operating Temperature | -65°C to +125°C |
| Orientation | Straight |
| Interface Gender | Female to Female |
| Outer Conductor Material | Beryllium Bronze, Gold Plated |
| Center Conductor Material | Beryllium Bronze, Gold Plated |
| Dielectric Material | PTFE |
| Overall Length | 12.9 mm |
The 12.9 mm length arrangement minimises the footprint requirements inside your RF modules and microwave assemblies . The small shape allows for increased component density on PCBs and offers steady RF performance. Flexibility under tight layout restrictions without loss of signal integrity.
The dual female interface makes system integration easier because it is a direct connection between two male SMP connectors. In many situations, no extra cable assemblies are required in this design. Rapidly expand RF routes and develop modular interconnect designs that are adaptable to changing system needs.
The push on architecture of the SMP interface allows for an efficient blind mate assembly, which is crucial for high density backplanes and phased array systems. Tool-less connections will provide your production teams quicker assembly times. This functionality cuts down installation mistakes and speeds up system deployment in production situations.
This SMP Female to Female Adapter has been engineered to have the lowest possible insertion loss and a VSWR of 1.5 or less ensuring signal integrity over the whole DC to 40 GHz frequency range. The connectors are made of gold-plated beryllium bronze for good conductivity and resistance to oxidation. RF systems that are reliable in the temperature range of -65°C to +125°C.
Rated for ≥500 mating cycles, the adapter withstands frequent connections in test environments and field applications. PTFE dielectric material ensures dimensional stability and low signal loss. The beryllium bronze construction provides excellent spring characteristics for reliable contact retention throughout the product lifecycle.
SIPU implements batch-level quality verification protocols. Each production run undergoes plating thickness measurement and bonding strength testing. RoHS environmental compliance testing occurs per batch. Dielectric withstanding voltage and insulation resistance receive verification using specialized test equipment, ensuring your adapter meets published specifications.
The SMP Female to Female Adapter serves 5G base station MIMO antenna arrays where high-density RF routing demands compact, reliable interconnects. Your telecommunications equipment benefits from stable performance in outdoor environments subject to temperature cycling and moisture exposure.
Phased array radar systems rely on this adapter for blind-mate connections that survive extreme vibration and thermal stress. The robust design meets the mechanical demands of airborne and ground-based defense applications where connection failure is not an option.
Laboratory environments use this adapter for RF characterization and component testing. You achieve repeatable measurements with Vector Network Analyzers while handling frequent mating cycles. The consistent electrical properties support accurate calibration and measurement integrity.
Microwave module designers incorporate this adapter to create flexible board-to-board interconnections. The compact footprint fits within miniaturized assemblies for industrial electronics and scientific instrumentation. Your designs gain modularity for easier maintenance and configuration changes.

SIPU enforces stringent quality standards throughout the entire production process. Batch inspections cover plating quality tests, including measurements of plating thickness, bonding strength and corrosion resistance. RoHS environmental compliance tests are conducted for every production batch.

Electrical performance verification is carried out via voltage withstand test equipment to confirm compliance with specifications for dielectric withstanding voltage and insulation resistance. The VSWR and insertion loss performance of adapters are guaranteed by structural design, and all components are machined using precision CNC lathes.
Complete quality inspection records are archived for all production batches. Standardized control ensures consistent mechanical and electrical performance of products in line with published specifications.

Q: What frequency range does this SMP adapter support?
A: The SIPU-SMP-KK129 operates from DC to 40 GHz, making it suitable for most microwave and millimeter-wave applications requiring interconnect solutions within this spectrum.
Q: How many times can I mate and unmate this adapter?
A: The adapter is rated for ≥500 mating cycles under normal operating conditions, providing reliable service in both production environments and field applications.
Q: What temperature range can this adapter withstand?
A: The operating temperature range spans -65°C to +125°C, accommodating both extreme cold and high-temperature environments found in aerospace, defense, and industrial applications.
Q: What materials are used in construction?
A: The outer and center conductors use gold-plated beryllium bronze for optimal conductivity and spring characteristics. PTFE serves as the dielectric material for excellent high-frequency performance and temperature stability.
Q: Does this adapter work with misaligned connections?
A: The SMP interface design accommodates minor axial and radial misalignment typical in blind-mate applications, helping compensate for mechanical tolerance variations in PCB assemblies.
Q: What quality certifications does SIPU maintain?
A: SIPU RF Technology operates under ISO 9001 certified quality management systems. Products comply with CE and RoHS environmental standards, with batch-level testing documentation available.

Contact our SMP Female to Female Adapter's team at info@sipuconn.com to discuss your RF interconnect needs, request samples, or place your order.
Contact us directly for customized solutions, quotations and long-term strategic cooperation.