At present, it is known in the market that "short" can relatively reduce the design space of the PCB board structure. The main length of the hardware shell of a conventional USB mother seat (excluding fixed feet and plug-in feet) is generally between 13.5 and 14.2mm, and the USB mother seat within this length range is what we call the conventional USB mother seat, Anything shorter than this length range is referred to as a "short body USB mother seat", such as 11.5mm, 10.5mm, 10.0mm, 8.8mm, etc. Whether it is a double-layer, single port, or multiple body, or a horizontal 90 degree or vertical 180 degree welded plate method, the qualitative "short body USB mother seat" The basis for this is the length of the hardware shell interface. In fact, the short body USB motherboard also evolved based on customer needs. With the miniaturization of digital electronic products, the requirement for reducing the size of the USB interface was also put forward. As a result, the short body USB motherboard emerged like mushrooms after a rain. The design concept of the short body USB motherboard is very clever, it does not change the insertion depth of the USB male head. In other words, it swallows the USB male head in comparison to the conventional USB motherboard The depth is the same, so how is this achieved? Through disassembly, we can find that the originally shortened volume is all contributed by the internal plastic core of the USB motherboard. By reducing the length of the rubber core, the advantages of shortening the USB motherboard are very obvious. Without changing all the functions of the USB motherboard, the reduced space occupied by the PCB board can provide greater possibilities and flexibility for the design of other electronic components.

Short body conventional USB socket classification:

1. Packaging classification. USB sockets are divided into two types of packaging: SMT chip packaging and DIP plug-in packaging.

2. Specification classification:

USB AM (short body soldered wire type, foldable two-piece set, foldable three-piece set, A-male plug-in type, SMD type, sink plate type, harpoon type, etc.)

USB AF

USB BM (short body solder wire, three piece solder wire)

USB BF (90 ° inline, 180 ° inline, SMT full mount)

Classification of short body conventional USB sockets:

1. Harpoon USB socket type: USB A female short body 90 ° four legged harpoon,

2. Scope of use: Computer type: Plug/socket interface type: USB support card number: Single card reading type: USB shape: Rectangular production process: Cold pressing characteristics: Flame retardant/flame retardant;

3. Characteristics: Flame retardant/flame retardant working frequency: High frequency contact material: Copper/iron insulation material: LCP core number: 4 pins: 4 wire length: 00 (mm).

Short body USB motherboard/socket products are widely used in mobile power supplies, household appliances, medical devices, office equipment, projectors, instruments, electric tools, packaging machinery, automotive electronics, digital cameras, small chargers, communication equipment, smartphones, PC/tablets, televisions, wearables, in vehicles, artificial intelligence, machine vision, robots, drones, high-precision weapons, mobile interconnections, and home furnishings, Equipment such as data transmission line interfaces.