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How does a small-sized Type C3.6 24-pin female connector handle high-density signal transmission?

Publish Time: 2026-01-08
In modern industrial automation, robotics, CNC machine tools, and intelligent sensing systems, internal space is becoming increasingly compact, while the number of control signals, power supplies, and feedback data lines continues to increase. Achieving reliable, efficient, and multi-channel electrical connections within limited space has become a key challenge for system integration. The Type C3.6 24-pin female connector stands out in this context—its shell diameter is only about 3.6 mm, yet it integrates 24 independent contacts, truly "connecting everything within a small space."

1. Precision Arrangement: High-Density Contact Integration Achieved with Micron-Level Technology

The core of the Type C3.6 24-pin female connector lies in its ultra-compact internal structure design. The 24 signal pins are not simply stacked, but arranged in a multi-layered concentric circle or honeycomb matrix, making full use of radial and axial space. The spacing between each contact is typically controlled between 0.5 mm and 0.8 mm, placing extremely high demands on mold precision and injection molding processes. 1. **High-precision stamping and electroplating technology:** The contact pin surface is covered with a uniform gold or tin alloy layer, ensuring low contact resistance and preventing oxidation corrosion. This micron-level manufacturing capability allows for the efficient integration of 24 signal channels into a circular cross-section with a diameter of less than 10mm.

2. Materials and Structure Synergy: Balancing Insulation, Strength, and Signal Integrity:

To prevent crosstalk or short circuits between adjacent contacts, the connector uses high-performance engineering plastics as the insulating base. These materials possess excellent dielectric strength, high-temperature resistance, and low moisture absorption, ensuring stable insulation performance even in humid, high-temperature, or high-frequency signal environments. Simultaneously, the shell often employs a metal or high-strength plastic design with a shielding ring, providing not only mechanical protection but also forming an electromagnetic shielding layer, effectively suppressing the impact of external interference on weak signals and ensuring accurate data transmission.

3. Reliable Connection Mechanism: Anti-misplugging, shockproof, and long-term mating life.

High density does not equate to fragility. Type C3.6 24-pin female connectors are generally equipped with key positioning slots, asymmetrical pin layouts, or color coding to achieve a "foolproof" design, eliminating the risk of reverse insertion or incorrect connection. The mating part employs a spring-loaded or hyperboloidal contact structure, providing stable positive force and maintaining a low-impedance connection even under equipment vibration or shock environments. High-quality products can support over 500–1000 mating cycles with contact resistance changes of less than 10%, meeting the long-term maintenance needs of industrial sites.

4. Application Scenarios Driven: From PLC Modules to Collaborative Robot Joints

In programmable logic controller (PLC) expansion modules, the C3.6 connector replaces multiple loose wires with a single interface, significantly simplifying wiring. Inside collaborative robot arms, its compact size allows it to be embedded in narrow joint cavities, simultaneously transmitting motor encoder signals, torque feedback, and power supply. In intelligent sensor networks, the 24-pin design is sufficient to support the coexistence of multi-channel analog acquisition and digital communication. This "plug-and-play" high-density solution significantly improves equipment integration, reduces failure rates, and shortens assembly and maintenance time.

5. Standardization and Compatibility: Supporting Domestic Substitution and System Upgrades

Although the C3.6 connector is small in size, it complies with IEC or industry-standard interface specifications, ensuring interchangeability between products from different manufacturers. In recent years, breakthroughs by domestic manufacturers in precision molds, plating processes, and material formulations have enabled them to offer products with performance comparable to international brands, accelerating the localization process of high-end industrial control equipment.

The Type C3.6 24-pin female connector is an engineering paradigm of "small is strong." It condenses high density, high reliability, and high compatibility into a space the size of a fingertip, becoming an indispensable "neural synapse" in modern intelligent equipment. In the wave of Industry 4.0 and equipment miniaturization, this type of precision connector will continue to support the visible future of intelligent manufacturing through "invisible connections."
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