Single head antenna thimble

The single-head antenna thimble is a precision connector used for conductive transmission of electronic products. It is small in size, smooth in surface, strong in durability and low in cost, and is unanimously favored by the market. The specific characteristics are summarized as follows:

Spring material of single-head antenna thimble: The antenna thimble spring is made of beryllium copper, stainless steel, piano steel wire, each material has its own unique characteristics, such as some basic considerations in the field of spring design: operating temperature, impedance, elastic requirements. The spring is basically silver-plated, and gold-plated for better electrical conductivity. Gold can better improve electrical conductivity and high thermal performance, as well as prevent oxidation and corrosion;

Material selection and process of single-head antenna thimble needle: The needle tube of the antenna thimble is a deep-machined part. Usually, it needs to go through two processes of nickel plating and gold plating. First, the nickel bottom treatment is required, and the usual thickness is 1-2 Micron (as often said 40u"=1 micron), gold plating is the usual surface treatment layer, and the thickness is basically 0.1-1.0 microns. For small-diameter and relatively long blind-hole tubes, it is a challenge to plate the inner wall, usually we will Open a side hole at the bottom end to allow the plating solution to fully form a reflux at the bottom of the tube to ensure that the bottom of the inner wall tube is deposited to the gold component.

The material and composition of the needle tube of the single-head antenna thimble: The needle tube is formed by turning and milling copper, and it is basically gold-plated. It is the preferred treatment method because gold has excellent electrical conductivity and anti-oxidation ability. In addition, gold-plated Thickness definitely affects the life of the whole product, because of cost considerations we will choose the thickness of nickel bottom treatment and final gold plating. As some other plating solutions, such as rhodium plating, palladium and some noble materials, different products will have some differences needs;

Assembly of single-head antenna thimble: After the finished product is produced, we will assemble to form the antenna thimble, and the terminal of the antenna thimble is generally composed of plastic.

The existing antenna thimbles are divided into shrapnel type and thimble type. The contact point of the shrapnel type is easy to move when compressed, and it is installed on the PCB board. The shrapnel type occupies a large area and cannot effectively save the space of the PCB board, and The existing thimble-type structural design requires welding, which makes the disassembly process quite cumbersome, and the internal smooth contact surface cannot maintain stable contact and does not have stable contact resistance.