Type-C connector manufacture process

Mon Oct 31 17:57:13 CST 2022

Type-C-connector-manufacture-process-HornmicLink

Type-C connector manufacture process

Type-C connectors are single connector solutions that can be used for data, power, and A/V applications. Their slim profile is suitable for mobile devices, while durable enough for industrial applications, and recently the European Union has mandated the uniform use of Type-C interfaces for electronic devices. Type-C connectors will be used in more and more scenarios, and will make performance requirements for their high-frequency signals, mechanical characteristics, electrical performance, and environmental changes.

This article briefly demonstrates the manufacturing process of Type-C connector.

Type-C connector manufacturing process can be divided into four main manufacturing steps: stamping, plating process, injection molding process, and assembly.

1. Stamping

1.1 Stamping of out shell

The out shell is generally made of SUS(Stainless Steel) metal material because SUS is rust-free, strong enough and wear-resistant..

There are two common types of shell: the Side-Riveted type and the Deep-Drawing type. Check the plug of the USB-C cable you have, it is easy to distinguish between the two types, as in the 2 figures below.

A. Side-Riveted shell

Side-Riveting-Shell-Type-C-connector-HornmicLink

Advantages: The metal tooling process is simple, the stamping production is with high efficiency. Production cost is relatively low.

Disadvantages: Riveting strength is not as strong as the overall deep drawing shell.

B. Deep-Drawing Shell

Deep-Drawing-Shell-Type-C-connector-HornmicLink

Advantages: good overall strength, good water resistance and corrosion resistance.

Disadvantages: high mold cost, low punching speed for stamping production; relatively high manufacturing cost.

1.2 Stamping of pins

As the carrier of signal and current transmission, they are usually made of copper. They are usually produced by high-speed stamping with high efficiency and stable quality. The quality of Pin is usually determined by the material; Of course, the surface quality of the cut-off secion during stamping also affects the life span, so there is usually a deburring process after stamping to make the cross section smooth.

2. Plating

After the pin stamping is completed, the next process is the plating process. At this stage, the electronic contact surface of the connector will be plated with a variety of metal material coatings, commonly electroplated nickel, electroplated tin, plated gold. The purpose of plating process is to avoid air oxidation and enhance the conductivity.

3. Molding

Molding wraps the pins together with melted plastic, and keeps them in place after cooling so that they are stable and do not shift, ensuring stable USB charging and signal transmission.

Molding-Type-C-connector-HornmicLink

4. Assembly

Assemble Shell, Pins, circuit board, etc. together to form a semi-finished product. Later, we can solder cable to manufacture USB cable.

Assembly-Type-C-connector-HornmicLink

Assembly-Type-C-connector-HornmicLink



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By HornmicLink_Henry @221031 18:08