Wire-to-Board Connector Types

A connector in electronics serves the essential role of linking two or more conductors, thus facilitating the flow of power and signals from one conductor to another.

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Understanding Wire-to-Board Connectors

The wire-to-board connector is specifically designed to connect a series of discrete wires to a printed circuit board (PCB). These connectors vary significantly in circuit sizes, which refer to the number of contacts they support, number of rows, pin pitch (the distance between pins), current ratings, and compatible wire types.

Wire-to-board connectors, also referred to as cable-to-board connectors, have a typical circuit size ranging from 2 to 30 contacts (2*15).

Key Characteristics of Wire-to-Board Connectors

The pitch of a connector denotes the pin-to-pin distance between neighboring contacts. There are three primary components found in a wire-to-board connection system:

• A board connector (also known as a PCB header or PCB connector) is soldered onto the PCB and connects with a wire connector.
• A wire connector, often referred to as a housing, secures the crimped wires that interface with the PCB header.
• Terminals that complete the connection system.

Types of Wire-to-Board Connectors

Wire-to-board connectors can be organized based on their soldering methodology and wire termination technology:

• SMT (Surface Mount Technology) Type - PCB Connector
• Through-Hole Type - PCB Connector
• Crimping Style - Wire Connector
• IDC (Insulation Displacement Connector) - Wire Connector

SMT (Surface Mount) Connectors

An SMT connector is installed directly on the surface of a PCB. These connectors come in side-entry (right angle) and top-entry (vertical or straight) designs. SMT connectors are typically packaged in reels, which enhance automation and lower costs while boosting quality. However, the processing equipment required for SMT is on the pricier side.

Through-Hole Connectors

A through-hole connector is inserted and soldered into drilled holes on the PCB, creating a durable bond. This style is particularly beneficial for larger components subject to high power, high voltage, and mechanical stress. However, the production process can be costly and take up valuable PCB real estate.

Crimping Style Connectors

A crimping-style wire connector consists of a housing, usually made from plastic, that accommodates crimped wires which connect with a PCB header. The crimping process is straightforward and efficient, establishing a reliable connection that can withstand various conditions.

IDC Connectors

An IDC connector features pre-installed terminals within its plastic housing. After wiring, it connects directly with a PCB connector. IDC connectors offer two distinct variations: one designed for discrete wires and another for ribbon cables. The ribbon cable option simplifies assembly, though it offers a less flexible connection.

For a comprehensive range of wire-to-board connectors varying from 0.8 mm pitch to 6.2 mm pitch, or to discuss your project needs further, please reach out to us. We invite you to connect with RHT for tailored support.

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