In RF and wireless system design, MMCX connectors are widely used thanks to their compact size, reliable push-on coupling, and stable 50-ohm impedance. However, as project volumes scale up, procurement teams often face challenges related to component cost and supply continuity.

The Kinghelm KH-MMCX-Z MMCX jack connector is designed to serve as a reliable alternative to Amphenol MMCX6251N1-3GT30G-50, offering comparable electrical and mechanical performance while significantly reducing BOM cost and improving supply flexibility.

Reference Part: Amphenol MMCX6251N1-3GT30G-50

The Amphenol MMCX6251N1-3GT30G-50 is a straight MMCX jack connector with PCB through-hole termination. It supports a maximum frequency of 6 GHz and operates over a wide temperature range from -65 °C to +165 °C.

With gold-plated brass housing, beryllium copper contacts, and PTFE insulation, it is commonly used in RF modules, antennas, and compact wireless devices. However, its unit price can become a noticeable cost factor in medium- to high-volume production.

Kinghelm KH-MMCX-Z: Form-Fit-Function Compatibility

The KH-MMCX-Z is engineered to match the core requirements of standard MMCX interfaces. It features a push-on coupling mechanism, 50 Ω characteristic impedance, and PCB mounting structure suitable for RF signal transmission.

From a mechanical and electrical standpoint, KH-MMCX-Z aligns well with existing MMCX jack footprints, allowing engineers and purchasing teams to qualify it as a drop-in alternative in many applications without redesigning the PCB.

Key Specifications Comparison

*Typical operating range for standard RF applications.

Cost & Supply Advantages

One of the key reasons procurement teams evaluate alternatives is cost control without compromising functionality. Based on LCSC pricing:

Ampenol MMCX6251N1-3GT30G-50

l 1,000+ pcs: approx. USD 1.80 / pc

Kinghelm KH-MMCX-Z

l 1,000+ pcs: approx. USD 0.37 / pc

This represents a cost reduction of nearly 80% at volume level, making KH-MMCX-Z especially attractive for large-scale production and cost-sensitive RF designs.

In addition, Kinghelm maintains stable supply and flexible lead times, helping customers reduce sourcing risk and avoid project delays caused by long or uncertain delivery cycles.

Typical Applications

l RF antenna connections

l Wireless communication modules

l GPS and IoT devices

l Compact RF signal transmission boards

l Consumer and industrial wireless equipment

Why Choose Kinghelm KH-MMCX-Z?

For buyers and engineers seeking a dependable alternative to Amphenol MMCX6251N1-3GT30G-50, Kinghelm KH-MMCX-Z offers a balanced solution:

l Comparable MMCX interface and electrical performance

l Significant BOM cost savings

l Stable supply and scalable availability

l Suitable for mass production and long-term sourcing strategies

If you are evaluating MMCX connector alternatives for your next RF project, KH-MMCX-Z is a practical option worth considering.

Contact us: kinghelm666@kinghelm.net