Q：What is www.gostockrf.com?
A：Founded in 2008, GO-STOCK (HK) LIMITED brings together the power of a number of trusted brands and is a unique capability partner for Electronic Components, RF Components, and New Material solutions. Our team is committed to creating high quality and reliable electronic component solution.
We have a wide range of products in the field of electronic components.
Q: How do I send a inquiry enquiry?
A: 1. When you find the right product, you can ask us by clicking Inquiry on the product page.
2. Click on INQUIRY in the navigation bar and ask for the quote thatyou want to purchase. We will contact you as soon as possible.
Q：How to contact us？
A：If you have any questions or concerns as to the processing of your Personal Data, please use the "Contact Us" link on the Website or email firstname.lastname@example.org.
Q: How to buy a product?
A: Click the inquiry button and our sales will contact you as soon as possible. Alternatively, you can purchase products directly from our online sales mall at www.go-stock.com
Q: How to choose RF coaxial connector?
A: The RF coaxial connector is used differently for each excuse. Select the connector you want according to the following description.
The BNC is a bayonet type, which is used for RF connections below 4 GHz and is widely used for instrumentation and computer interconnection.
The TNC is a threaded connection that is similar in size to BNC and operates at up to 11 GHz. The threaded version is suitable for vibration environments.
SMA is a threaded connection that is the most widely used, with impedances of 50 and 75 ohms. For 50 ohms, the flexible cable is used at less than 12.4 Ghz, and semi-rigid cables are up to 26.5 GHz.
SMB is smaller than SMA. It is a self-locking structure for quick connection. It is often used for digital communication. It is a replacement for L9. It can be 50 ohms to 4 GHz and 75 ohms to 2 GHz.
SMC is threaded, others like SMB, have a wider frequency range and are often used in military or high vibration environments.
The N-type connector is threaded, air-insulated, low cost, up to 11 GHz, and is commonly used on test instruments, both 50 and 75 ohms.
The MCX and MMCX connectors are small and are used for dense connections.
BMA is used for blind plug connections in low power microwave systems up to 18 GHz.
Each connector has military standards and commercial standards. The military standard is manufactured according to MIL-C-39012. All copper parts, PTFE insulation, gold plating inside and outside, the most reliable performance, but the cost is high.
Commercial standard designs use inexpensive materials such as brass casts, polypropylene insulation, silver plating, etc., which are less reliable.
The connectors are made of brass, beryllium copper and stainless steel. The center conductor is usually gold plated to ensure low resistance and corrosion resistance. The military standard requires gold plating on SMA and SMB, and silver plating on N, TNC and BNC. Because silver is easily oxidized, users prefer nickel plating.
Insulation materials are PTFE, polypropylene and toughened polystyrene, of which PTFE has the best insulation performance but higher cost