Board-to-Board (BTB) connectors serve as critical components for direct stacked interconnections between PCBs in electronic devices, with their core strengths lying in high-density integration and reliable connectivity. MTCONN's BTB series offers pitch options ranging from 0.4mm to 1.27mm. These connectors are widely used in applications such as multi-layer PCB interconnections in smartphones and modular assembly of industrial control equipment. By ensuring dependable electrical connections while enabling flexible PCB configurations, BTB connectors have become an indispensable interconnect solution for modern electronic devices.

Board-to-Board Connector Manufacturer

M&T is an experienced Board-to-Board Connector Manufacturer providing compact, high-density interconnection solutions for direct PCB-to-PCB connections. Our BTB connector series covers pitch options from 0.4mm to 1.27mm, supporting space-efficient board stacking and reliable signal or power transmission in modern electronic assemblies.

Designed for applications where PCB space, connection density, and mechanical reliability matter, M&T board-to-board connectors are used in smartphones, tablets, computers, communication equipment, automotive electronics, medical electronics, and modular industrial control systems.

As part of M&T's broader Electrical Connector portfolio, we support standard BTB connector sourcing as well as project-specific connector development for OEM electronics manufacturers.

Fine-Pitch Board-to-Board Connector Range

M&T Board-to-Board Connectors directly connect two printed circuit boards without requiring a separate cable assembly. This helps engineers achieve compact internal layouts while maintaining dependable electrical connections between boards or functional modules.

Our BTB range includes 0.4mm, 0.5mm, 0.635mm, 0.8mm and other pitch configurations up to 1.27mm, with different contact counts and male/female mating options available according to the series.

0.4mm Board-to-Board Connectors

0.4mm Board-to-Board Connectors are designed for highly space-constrained PCB assemblies requiring high contact density. They are suitable for compact electronic devices and internal module connections where minimizing connector footprint is a priority.

0.5mm Board-to-Board Connectors

The 0.5mm BTB Connector range provides a balance between compact dimensions and flexible contact configurations. Multiple male and female models are available for high-density PCB interconnection.

0.635mm & 0.8mm BTB Connectors

M&T also supplies 0.635mm and 0.8mm board-to-board connector options for applications requiring different PCB layouts, contact arrangements, and mechanical structures.

Individual product pages provide model-specific electrical and mechanical specifications for engineering evaluation.

High-Density PCB-to-PCB Interconnection

Modern electronic products increasingly integrate multiple functional PCBs into limited enclosure space. High-Density Board-to-Board Connectors allow engineers to establish direct electrical connections between boards while reducing the wiring required inside the device.

This makes BTB connectors particularly suitable for modular and multilayer electronic architectures.

Depending on the connector series and PCB arrangement, they can support applications such as:

• Main board to display module connections

• Main board to camera or sensor modules

• Control board to functional daughterboards

• Communication and interface module connections

• Modular industrial controller assemblies

• Compact embedded electronic systems

By selecting the appropriate pitch, contact count, mating configuration, and PCB arrangement, engineers can optimize both connection density and internal product layout.

How to Select a Board-to-Board Connector

Selecting the right PCB Board-to-Board Connector requires more than choosing a pitch. Mechanical dimensions, electrical requirements, PCB arrangement, and production conditions should all be evaluated before specifying a connector.

Key selection factors include:

• Pitch – Fine-pitch options such as 0.4mm and 0.5mm are suitable for high-density PCB designs.

• Contact Count – Select the number of contacts according to the required signal and power circuits.

• Male & Female Pairing – Confirm compatible mating connectors and corresponding PCB footprints.

• Mated / Stacking Height – Determine the required spacing between the two connected PCBs.

• PCB Orientation – Consider the relative positioning of the connected boards and enclosure limitations.

• Rated Current & Voltage – Match electrical ratings to the actual circuit requirements.

• Contact Resistance – Important for stable signal and current transmission.

• Housing & Contact Materials – Evaluate materials according to soldering process, operating temperature, and application environment.

• Mechanical Durability – Consider mating cycles, vibration, and mechanical stability for the intended application.

Because specifications vary between BTB series, M&T provides model-specific technical data to support connector comparison, sampling, and engineering verification.

Custom Board-to-Board Connectors for OEM Projects

Compact electronic products often have strict requirements for connector footprint, PCB spacing, contact count, and mating structure. When a standard model does not fully match the design, M&T supports Custom Board-to-Board Connectors according to customer drawings, samples, or project specifications.

Customization can include:

• Pitch and contact count

• Connector dimensions

• Mated and stacking height

• Male/female mating structure

• Terminal and contact configuration

• Housing design and material

• Contact material and plating

• PCB mounting requirements

• Other mechanical or electrical specifications

M&T integrates mold design and processing, connector development, precision manufacturing, and automated production capabilities. This allows our team to support customers from connector evaluation and prototype development through stable mass production.

For a new PCB interconnection project, learn more about our Customized Connector Service or contact M&T with your PCB layout, drawing, required pitch, contact count, stacking height, and estimated order quantity.

Board-to-Board Connectors for Different Electronic Applications

M&T BTB Connectors are suitable for electronic products that require compact, direct, and reliable interconnection between multiple PCBs.

Smartphones, Tablets & Consumer Electronics

Fine-pitch board-to-board connectors support high-density internal connections between main boards, displays, cameras, sensors, and other functional modules in compact consumer devices.

Industrial Control & Automation

Board-to-board connectors can connect control boards, communication modules, I/O boards, and functional daughterboards in PLCs, controllers, HMI equipment, and embedded industrial systems.

For industrial projects requiring multiple connector technologies, explore M&T's Industrial Grade Connector Solutions.

Communication Equipment

High-density BTB connectors can support modular PCB architectures in communication terminals, networking devices, embedded communication systems, and other electronic equipment.

Automotive Electronics

Suitable BTB configurations can be used for internal PCB connections in displays, infotainment systems, electronic control modules, cameras, and other vehicle electronics.

Medical Electronics

Compact PCB-to-PCB interconnections can support modular internal designs in diagnostic, monitoring, imaging, and other medical electronic equipment.

Why Choose M&T as Your Board-to-Board Connector Supplier?

M&T combines precision connector development, tooling, manufacturing, and quality management to support both new product development and ongoing volume sourcing.

• Fine-Pitch BTB Portfolio – Board-to-board connector options from 0.4mm to 1.27mm pitch.

• High-Density Interconnection – Compact connector designs for space-constrained and multi-board electronic assemblies.

• Multiple Contact Configurations – Male and female connectors with different contact counts according to the series.

• OEM Customization Support – Development according to PCB layout, dimensions, mating height, contacts, and project requirements.

• Precision Manufacturing – Integrated mold design, connector development, production, and automated manufacturing capabilities.

• Quality Management – M&T has obtained ISO9001, ISO14001, IATF16949, and ISO13485 management system certifications.

• Sample to Mass Production Support – Connector selection and development support for prototyping, verification, and volume purchasing.

Explore M&T's complete Electrical Connector range or send us your BTB connector specifications for product selection, samples, and quotation.

FAQ

What is a board-to-board connector?

A board-to-board connector, also called a BTB connector, directly connects two printed circuit boards to transmit electrical signals or power without requiring a separate cable between the boards. It is commonly used in compact and modular electronic assemblies.

What pitch sizes are available for M&T board-to-board connectors?

M&T's BTB series covers pitch options from 0.4mm to 1.27mm, including 0.4mm, 0.5mm, 0.635mm, 0.8mm, and other configurations according to the connector series.

What is a fine-pitch board-to-board connector?

A fine-pitch board-to-board connector uses closely spaced contacts, such as 0.4mm or 0.5mm pitch, to accommodate more connections within a smaller PCB footprint. It is commonly selected for compact and high-density electronic designs.

How do I choose the correct BTB connector?

Consider pitch, contact count, male/female mating pair, PCB footprint, stacking height, rated current and voltage, connector dimensions, operating environment, and required mechanical durability. Providing PCB drawings or an existing connector specification can make product matching more efficient.

Can M&T customize board-to-board connectors?

Yes. M&T supports custom BTB connector projects based on customer drawings, samples, PCB layouts, and technical requirements. Customization can cover pitch, contact count, dimensions, stacking height, terminal structure, materials, plating, and other specifications.

What information should I provide when requesting a quotation?

Provide the required pitch, number of contacts, male or female connector requirement, stacking height, PCB footprint or drawing, electrical requirements, application, estimated order quantity, and an existing sample or part number if available.