Wire to board connector is used to connect wires and different types of cable or a set of discrete wires to a printed circuit board (PCB). These connectors, which are usually medium and low voltage, are an efficient and cost-effective way to deliver power and signals to PCBs in automotive, industrial, lighting, and communications products. Commercial electronic equipment and household appliances also often use wire-to-board connectors. The needs of the application will dictate the connector style chosen, as there is no "standard" wire-to-board connector design. Depending on the manufacturer, some have a low profile fit for tight spaces and different locking mechanisms such as friction locks, full locks or quick disconnects. Others have locking handles or a snap-on connection to ensure that the cords are held securely in their sockets. While many connectors are surface mounted on a PCB, others have pins that pass through the PCB and are soldered to the other side. 
Wire-to-board connectors are specified by characteristics such as housing size, material, number of contacts, stack height (connector height measured from the board), contact length, and number of contact rows. They are also specified in terms of leg spacing, which is the distance measured between the centers of two conductors. Wire termination also varies by wire size and number of contacts. For example, connectors that handle high power typically have crimp contacts that are secured with some tool. Other types, such as mass termination connectors that hold 20 or more wires, can be designed for use in automated soldering systems. Another recent development is a new generation of ultra-compact connectors with a profile of less than 1.5 mm, compatible with automated surface mounting in high-volume production. To ensure reliability, these miniature connectors typically have gold-plated contacts and strain relief. With today's wire-to-board connectors available in so many sizes and styles, design engineers have more options than ever to select the right power and signal transmission system for their end product. 
Medium voltage cable for board connector
The medium and low voltage wire and cable as the connector, used for connecting the main board with other parts, come in different types. In basic wiring installation techniques, there are three types of cable connectors: twisted pair connectors, coaxial cable connectors, and fiber optic connectors. Cable connectors typically have a male component and a female component, except in the case of hermaphroditic connectors, such as IBM data connectors. Usually plugs and sockets are symmetrically shaped, but sometimes they are key. This means they have a unique, asymmetrical shape or some system of pins, studs and sockets that ensure the plug can only fit into the socket one way. twisted pair cable connector Many in the cable industry use twisted pair connectors more than any other type of connector. Connectors include modular RJ plugs and jacks, as well as the hermaphroditic connectors used by IBM for use with shielded twisted pair. 
Twisted pair cable connectors are used with patch panels, stamping blocks and wall panels. Twisted pair cable connectors are called IDCs or insulation displacement connectors. Most unshielded twisted pair (UTP) and shielded twisted pair (ScTP) cable installations use terminal blocks, so use a type 110 terminal block. The 110 block (shown in Figure 1) contains rows of specially designed sockets in which cables are terminated using a hole tool. Both UTP and ScTP connectors use IDC technology to establish contact with copper conductors at the termination of 66, 110 and conventional wall plates. You do not remove the wire insulation from the conductors as you would with a screw connection. Instead, you can apply the conductor between opposing blades or to the point where it pierces the plastic insulation and makes contact with the conductor. Both UTP and SCTP cables use modular plugs and sockets. Modular jacks have been common in homes for telephone wiring for decades. Modular connectors are available in four-, six-, and eight-position configurations. However, it is usually only some places that have metal contacts installed. Make sure the connector you purchase is populated with the correct contacts for your application. 
Medium voltage wire for board connector
The medium and low voltage playing the role of a connector are components that electronic engineers often touch. Their role is simple: they create a bridge for different parts and board where the circuit is broken or isolated, allowing current to flow and the circuit to perform its intended function. Plugs are an integral part of electronic equipment, and when you look at power paths, there is always one or more plugs. Connectors come in a variety of shapes and structures. Different frequencies, power and application environments will require different types of connectors. Before deciding on a plug, you should always consider the plug's mechanical electrical and environmental properties. If you want to keep the magic blue smoke away from your project, overkill is much better than weak plugs. Classification of plugs Plugs can be divided into three categories according to the connection method: Wire-to-Wire (WTW) connectors: such as S-ATA data cable, flat cable, FDD/HDD/Ultra ATA 66/100, power cable, USB, 1394 data cable. Wire-to-Board (WTB) connectors: such as I/O D Sub/USB/Mini Din/Mod.Jace/Audio jack/1394/P2*2; data and power connector: ATX/BTX/POWER. 
Board-to-Board (BTB) connectors: such as memory: DDR; expansion slots: PCB/PCI Exp.
- Backplane connector:
Connect daughter card and backplanes in a 90° vertical configuration. It can transmit high-speed differential signals or single-ended signals and large currents. Basic classification: DIN41621 connector; hard metric connectors.
- Audio/Video connector:
Plug for audio/video. Play the role of transmitting video and audio signals. Basic classification: HDMI; DVI; D-USB; RCA; SCART; S-Terminal; SPDIF; DisplayPort LVDS; Telephone jack.
- Connectors for the automotive industry:
Automotive connectors must comply with the USCAR-20 standard, which is the performance standard for automotive electrical connector systems, which requires that the contact surface of the electrical connector remain reliable throughout the service cycle of the automotive connector. 
By installation location: Body systems, chassis systems, dashboards, engines, safety systems It can also be divided by electrical characteristics: electronic control unit (ECU), lighting circuit, temperature sensing, central electrical system, air conditioning, entertainment, etc.
- Board-to-Board (BTB) connector:
They are integrated miniature connector plugs and sockets through which power and signals between printed circuit boards (PCBs) can be connected through the pins of these connectors. Compared to other types of connectors, they have the fastest transfer speeds of up to 28 Gbps. The commonly used primary pitches for these connectors are 0.4mm, 0.5mm, 0.635mm, 0.8mm, 1.00mm, 1.27mm, 2.0mm, 2.5mm, etc. All board-to-board connectors work on the basic premise that male pins and pins are matched. Commonly used board-to-board connectors can be classified into fine-pitch board-to-board connectors, SMT board-to-board connectors, right-angle board-to-board connectors, and spring-loaded board-to-board connectors (aka pogo pins). In addition, there are connectors for other special needs, such as memory: DDR; PCB/PCI expansion slots etc. 
- Card edge connector:
The best example is the PCI slot on your PC. They are called short edge connectors because they are on the edge of the circuit. They are designed for high signal integrity (SI) on printed circuit boards.
- Circular connector:
Circular connectors (circular interconnects), also known as aerospace connectors, are often used in the aerospace field due to their large current flow and good shielding ability.
- D-sub connector, D-sub micro connector:
They are subminiature D-shaped connectors named for their shape. Typical uses of D-Sub interface are VGA (DA15 female), parallel port (DB25 female), COM serial port (DE9 male, RS232). Their screw-in design enables high reliability. Although it is an old interface, they are still common.
- FFC/FPC connector:
If you've ever taken a phone apart, you've probably come across the flat orange ribbon cables that connect the circuits together. 
FFC stands for Flexible Flat Cable; FPC refers to Flexible Printed Circuit Board. PH rod connector, XH rod connector, 3.96 bar equidistant connector of 0.3, 0.5, 0.8, 1.0, 1.25, 1.27, 2.0, 2.54mm , 4~50 pins with different specifications and series connectors, SAN bar connector, SCN bar connector, and SM bar connector.
- Optical fiber connector:
They are devices for detachable (flexible) connection between optical fibers, which precisely connect the two end faces of the optical fibers, maximally couple the light energy output from the transmitting fiber into the receiving fiber, and minimize the impact on the optical fiber. It interferes with the optical link on the system. According to the connector structure, it can be divided into FC, SC, ST, LC, D4, DIN, MU, MT, etc.