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Does the current pass through the internal spring of the Pogo pin?

Pogo pin SpringPogo pin spring current Guide chart

The basic structure of Pogo pin includes Plunger, Barrel and Pogo pin Spring three main components. These parts are riveted and formed by an automatic riveting press to form a Pogo pin Spring probe. During the working process of the Pogo pin, it is indeed possible for the current to pass through the internal Pogo pin Spring, but this situation is not absolute, but depends on the specific design and application environment of the Pogo pin.

1. Current conduction path: In Pogo pin, the needle is usually used to achieve electrification or conduction. In order to optimize current conduction efficiency, the needle is often designed so that it is inclined downwards to make effective contact with the copper wall. In this case, most of the current flows into the copper wall through the needle, and the Pogo pin Spring only takes on a small amount of conduction tasks, mainly playing the role of restoring the elastic preloading. Therefore, the inner wall of the copper jacket is required to be smooth to ensure good contact and current conduction.

2. Electrical conductivity of Pogo pin Spring: Although cnomax Pogo pin Spring mainly plays a mechanical support and reset role in Pogo pin, it also has a certain electrical conductivity. However, due to the material and structural characteristics of Pogo pin Spring, it is usually unable to withstand excessive current. If the current is too large, it may cause the Pogo pin Spring to heat, deform or even burn. Therefore, when designing the Pogo pin, it is necessary to ensure that the Pogo pin Spring can withstand the expected current load, or through other designs to reduce the current through the Pogo pin Spring.

3. Design optimization: In order to reduce the current through the Pogo pin Spring, the needle of the Pogo pin is usually a beveled structure. This design can increase the contact area between the needle and the needle tube, thereby reducing the contact resistance, so that most of the current can flow through the needle into the copper wall. In addition, some Pogo pins also use a bevel and ball structure, by adding steel balls or insulating beads in the needle tube, further reduce the current through the Pogo pin Spring, and improve the stability of electrical contact.

Pogo pin Internal Spring design


Internal Pogo pin Spring is one of the key components of Pogo pin, and its design directly affects the performance and service life of Pogo pin. The following is a detailed discussion of the Pogo pin Spring design inside the Pogo pin:

1. Selection of Pogo pin Spring material:

• Stainless steel: Stainless steel is one of the commonly used materials for Pogo pinPogo pin Spring. It has excellent corrosion resistance and mechanical properties to meet the needs of most application environments. In particular, the stainless steel series such as SUS304 and SUS316 have stronger corrosion resistance, but lower magnetism, which is suitable for occasions with higher magnetic requirements.

• Brass: Brass also has good electrical conductivity, but it has poor corrosion resistance and is not resistant to high temperatures compared to stainless steel. Therefore, brass is usually used for parts such as needles and syringes that require good electrical conductivity, rather than Pogo pin Spring.

Alloys: Some alloy materials also have good corrosion resistance and mechanical properties, suitable for demanding application scenarios. The alloy Pogo pin Spring can be customized to meet different performance requirements.

2. Structural design of Pogo pin Spring:

• Pogo pin Spring shape: Pogo pin Pogo pin Spring usually has a spiral or cylindrical structure. The spiral Pogo pin Spring has good elasticity and resetting ability, which is suitable for frequent insertion and removal. The cylindrical Pogo pin Spring has a large stiffness and is suitable for occasions where greater pressure is required.

• Pogo pin Spring diameter and wire diameter: The diameter and wire diameter of Pogo pin Spring directly affect its bearing capacity and reset effect. The larger diameter Pogo pin Spring has stronger bearing capacity, but the resetting effect may be poor. Pogo pin Spring with thicker wire diameter has better reset effect and carrying capacity. Therefore, trade-offs need to be made according to specific needs during design.

Pogo pin Spring number of turns: The number of turns of Pogo pin Spring also affects its performance and service life. A Pogo pin Spring with too many turns may result in a poor reset, while a Pogo pin Spring with too few turns may not be able to withstand the expected load. Therefore, it is necessary to determine the appropriate number of Pogo pin Spring turns at design time.

3. Pre-pressure and stroke design of Pogo pin Spring:

• Pre-pressure: Pre-pressure refers to the pressure generated by the Pogo pin Spring when it is not acted upon by external forces. Proper pre-pressure can ensure that the Pogo pin maintains a good contact effect during insertion and removal, reducing the contact resistance. However, too much pre-pressure will increase the insertion and withdrawal force and reduce the service life; Too little pre-pressure may result in poor contact. Therefore, it is necessary to determine the appropriate pre-pressure value during the design.

• Stroke: Stroke refers to the amount of compression produced by the Pogo pin Spring when subjected to external forces. The appropriate stroke can ensure that the Pogo pin has enough elastic deformation during insertion and removal to adapt to different insertion depths. However, too much travel may lead to excessive compression of the Pogo pin Spring and damage; If the stroke is too small, it may not be able to meet the needs of insertion and removal. Therefore, it is necessary to determine the appropriate stroke value in the design.

4. Pogo pin Spring coating treatment:

• In order to improve the electrical conductivity and corrosion resistance of Pogo pin Spring, it is usually necessary to apply coating treatment to Pogo pin Spring. Commonly used coating materials include gold, silver, nickel and so on. Gold coating has good electrical conductivity and corrosion resistance, but the cost is high. The silver coating has good electrical conductivity but poor corrosion resistance. The nickel coating has better corrosion resistance, but the electrical conductivity is less than that of gold and silver. Therefore, the selection of coating materials needs to be balanced according to specific needs.

5. Manufacturing process of Pogo pin Spring:

• The manufacturing process of Pogo pin Spring has a significant impact on its performance and service life. Common manufacturing processes include cold stamping, automatic lathe machining, and flanging. Cold stamping process size is stable, better rounded corners, better product durability; Automatic lathe processing is suitable for mass production, can improve production efficiency and reduce costs; The flanging process keeps the needle inside the needle tube to ensure good contact. Therefore, the choice of manufacturing process needs to be based on specific needs and production scale trade-offs.

6. Testing and verification of Pogo pin Spring:

• After the design of the Pogo pin Spring is complete, it needs to be tested and validated to ensure that its performance meets the expected requirements. Commonly used test methods include low voltage contact resistance test, insulation resistance test, voltage resistance test, positive force test, durability test and so on. These tests can evaluate the performance of the Pogo pin Spring in terms of electrical conductivity, insulation, mechanical properties and durability. Through testing and verification, the design of Cnomax Pogo pin Spring can be optimized and improved to improve the overall performance and service life of Pogo pin.

To sum up, it is indeed possible for the current of the Pogo pin to pass through the internal Pogo pin Spring, but this situation depends on the specific design and application environment. To reduce the current passing through the Pogo pin Spring and optimize the performance of the Pogo pin, the internal Pogo pin Spring needs to be carefully designed and manufactured. This includes the selection of suitable materials, determination of suitable structural parameters and manufacturing processes, coating treatment, and testing and verification. Through these measures, we can ensure that Pogo pin has good electrical conductivity, mechanical properties and durability to meet the needs of various electronic products.

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