Why gold plating on pogo pin surface!Through Hole Pogo Pin Processing

　　The pin of connector is commonly used pogo pin, which is composed of needle, spring and needle tube. The electroplating process of the needle, needle tube and spring of the whole product is very important. Electroplating has a direct impact on the quality of a finished product and can determine whether the product is qualified or not. If the spring is not plated with gold, it will not be able to carry large current. If the needle of pogo pin is not plated with gold, it will not have stable signal and conductivity.

　　Pogo pin spring is made of beryllium copper, stainless steel and Piano steel wire. Each material has its own unique characteristics. In the field of spring design, for example, some basic considerations: working temperature, impedance and elastic force requirements. Spring is silver plated. Gold plating can improve electrical conductivity, high thermal performance, oxidation resistance and corrosion resistance.

　　Pogo pin's needle tube is a turning and deep-processing part. Generally, nickel plating and gold plating should be carried out successively during electroplating. The first step is to do nickel bottom treatment, with a general thickness of 1-2 μ m (for example, 40u = 1 μ m). Gold plating is usually a surface treatment layer with a thickness of 0.1-1.0 μ M. For the small diameter and long blind hole tube, it will become a challenge when electroplating the inner wall. Generally, side holes will be opened at the bottom of the tube to allow the electroplating solution to fully reflow at the bottom of the tube, so as to ensure the deposition of gold at the bottom of the inner wall tube. Or inform the customer of the basic design ratio: length and tube inner diameter.

　　Pogo pin pins are basically gold plated, which is the preferred treatment because gold has excellent conductivity and oxidation resistance. In addition, the thickness of gold plating has an impact on the life of the whole product, and nickel bottom treatment and gold plating thickness are mostly selected for basic cost consideration. Of course, there are other electroplating solutions, such as rhodium plating, palladium plating or other noble materials. Different products have different requirements.

　　Shenzhen Witchip Electronics Co., Ltd.

　　Shenzhen Witchip Electronics Co., Ltd. was established in 2004 and is located in Longgang District, Shenzhen. It has an independent factory building with an area of approximately 6,800 square meters. Integrating research and development, manufacturing, and sales, it is mainly engaged in the research and development and production of various POGOPIN and POGOPIN connectors, shrapnel terminals, and CNC automatic lathe parts. It can also be produced and processed according to customer samples. There are more than 4000 product categories for customers to choose. The products are widely used in various electronic products such as drones, smart robots, smart wearable products, 5G communication products, smart home products, education/entertainment electronics, medical equipment products, automotive electronics, mobile phone consumer electronics, etc.

　　The company’s R&D and designers are experienced engineering technicians with nearly 20 years of experience in the industry. The total number of employees is 120, with 80 CNC lathes, 100 automatic lathes, 80 assembly equipment, and projectors. Salt spray tester, life tester, current tester, high temperature tester, load dynamic impedance tester. In order to comply with the demand for market quality

　　The company passed the ISO9001 quality system certification in 2007 and successively passed the ISO14001 environmental system certification in 2009. It has 8 independent patents, which provide a solid guarantee for quality and delivery.

　　The company has always maintained a leading advantage in the field of Pogopin connector products, adhering to the business philosophy of "gratefulness, innovation, and creating value for customers", and has been recognized by some well-known companies at home and abroad, becoming their excellent connector supplier. Continuously win the trust of customers with quality and service, and establish a good reputation.

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