MMCX Jacks (Female) Guide: Types, Structure, and Uses Explained
What Are MMCX Jacks (Female)?
MMCX (Micro-Miniature Coaxial) Jack Connectors are ultra-small RF interfaces designed for high-density applications where space is extremely limited. As a micro-miniature version of the MCX series, MMCX jacks offer a reduced footprint, making them an essential component for modern compact electronics.
Tyclon’s MMCX jack connectors support a frequency range from DC to 6 GHz with a constant 50 Ω characteristic impedance. These connectors utilize a snap-on coupling mechanism for efficient installation and feature a gold-plated finish on the body and contacts to ensure dependable electrical performance.
Mating of MMCX Connectors
MMCX jacks are designed with a snap-on (push-on) coupling mechanism that allows for quick and secure mating without the need for threads or tools.
- The connection is established by pushing the male plug into the female jack until it clicks securely into place.
- The lack of a coupling nut allows these connectors to be placed very close together on a PCB or panel.
- The snap-on design provides sufficient mechanical retention for internal wiring and mobile applications.
MMCX jacks are intended for use exclusively with MMCX plugs (male). They are not compatible with larger series such as MCX or SMA.
MMCX Jacks (Female) by Type
MMCX jack connectors feature a micro-miniature female interface designed for high-density RF cable assemblies. In the Tyclon MMCX series, these jacks are engineered to be terminated at the end of micro-coaxial cables, providing a high-performance mobile connection point for RF signals.
Trivia: Jacks vs. Receptacles
In the MMCX series, "Jacks" typically refer to female connectors terminated at the end of a coaxial cable, while "Receptacles" are primarily designed for fixed mounting on panels or PCBs.
Receptacles provide flexibility for internal equipment wiring. For example, a bulkhead receptacle mounts through a hole in a panel and is secured with a nut. The center contact features a solder terminal, allowing it to be connected to various internal wires.
Because a receptacle is fixed to the chassis, it provides a stable interface for external plug connections. While cable jacks secure the cable's outer shield for mechanical strength, receptacles rely on the panel mounting for their stability. These are conventionally used in the female (jack) configuration to keep the signal-carrying contact recessed and protected within the device housing.
MMCX Jacks (Female) Installation Guide
MMCX Jacks are installed at the end of a coaxial cable (RG-316/U) to create a high-quality RF cable assembly. To ensure stable electrical performance and mechanical strength, Tyclon recommends a combination of soldering and crimping.
1. Connection of the Center Contact
The cable's inner conductor is connected to the female center contact via soldering. This ensures a low-resistance path and maximum signal integrity. Tyclon’s gold-plated contacts provide excellent solderability for high-frequency signals up to 6 GHz.
2. Connection of the Outer Shield (Crimp Method)
The cable's outer shield (braid) is secured to the connector body using a crimp ferrule. This mechanical tightening ensures a robust ground connection and provides the necessary strain relief to protect the internal solder joint.
3. Cable Compatibility and Integrity
The MMCX Jack must be used with the specified RG-316/U cable type. After assembly, verify the 50 Ω impedance and inspect the snap-on interface for debris. Proper termination is essential to prevent RF leakage and maintain performance.
MMCX Jacks (Female) FAQs
QWhat is a female MMCX jack connector?
QWhat is a female MMCX jack connector?
An MMCX jack is an ultra-small RF jack (female) designed for cable mounting. It is a micro-miniature interface used for high-density applications where space is extremely limited.
QWhy is the size of the MMCX series significant?
QWhy is the size of the MMCX series significant?
MMCX connectors are smaller than the standard MCX series. This compact design is essential for saving board space in modern, micro-miniature electronic equipment.
QWhat is the frequency range of Tyclon MMCX jacks?
QWhat is the frequency range of Tyclon MMCX jacks?
Tyclon MMCX female jacks support a reliable operating range from DC up to 6 GHz. This wide frequency coverage ensures stable signal transmission for wireless communication and GPS.
QWhat is the characteristic impedance of this series?
QWhat is the characteristic impedance of this series?
This series is designed with a constant 50 Ω characteristic impedance. This ensures seamless compatibility with standard RF communication systems and 50 Ω micro-coaxial cables.
QWhat coupling mechanism is used in MMCX jacks?
QWhat coupling mechanism is used in MMCX jacks?
The series uses a snap-on (push-on) coupling mechanism. This allows for quick, tool-free mating by simply snapping onto the plug, which is ideal for assembly in very tight spaces.
QWhich cable is compatible with MMCX-J-316?
QWhich cable is compatible with MMCX-J-316?
The MMCX-J-316 is specifically designed for mounting on RG-316/U (or equivalent) coaxial cables. Using the specified cable ensures proper installation and optimal electrical performance.
QWhat plating is used on Tyclon MMCX jacks?
QWhat plating is used on Tyclon MMCX jacks?
Tyclon MMCX jacks feature gold plating on both the body and the center contact. This finish provides superior electrical conductivity and protection against corrosion and oxidation.
QHow is the center contact attached to the cable?
QHow is the center contact attached to the cable?
The center contact of the MMCX Jack is connected to the cable’s inner conductor via soldering. This provides a stable electrical path and maintains high signal integrity at 6 GHz.
QAre MMCX connectors threaded like SMA or N series?
QAre MMCX connectors threaded like SMA or N series?
No, MMCX connectors are non-threaded. They utilize a snap-on interface that eliminates the need for manual tightening, making them well-suited for rapid assembly in dense RF environments.
QWhere are MMCX female jacks commonly used?
QWhere are MMCX female jacks commonly used?
They are essential for internal wiring in small mobile devices, wireless communication modules, and GPS receivers where high-density packaging and reliable RF performance are required.
QWhat is the difference between an MMCX jack and receptacle?
QWhat is the difference between an MMCX jack and receptacle?
A jack often refers to a cable-terminated female interface, while a receptacle is designed for panel mounting with solder terminals for internal wiring within an equipment chassis.
QHow can I order MMCX Jacks (Female), and what support do you offer?
QHow can I order MMCX Jacks (Female), and what support do you offer?
Ordering is simple—you can purchase our MMCX Jacks (Female) directly on our website or contact our sales team for assistance. We also provide comprehensive technical support, including datasheets, CAD models, and application notes, to help you select the ideal connector for your project.
Purchase Guide
Tyclon coaxial connectors and processed coaxial cable products can be purchased directly online using a variety of credit cards.
