Printed Circuit Boards | McMaster-Carr

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580 Products

Electrical Power, Networking, and Controlling

Circuit Boards

Create your own circuit board designs by adding components

72 products

Development Boards

Prototype electronics and build simple automation systems by configuring inputs and outputs

28 products

Single-Board Computers

Combine the functionality of a PC with the flexibility of a development board’s inputs and outputs

19 products

Development Board Sensor Modules

Transform your development board into everything from an airflow monitor to a motion detector

17 products

Development Board Holders

Keep a development board and breadboard in one spot for prototyping

1 product

Development Board Programming Modules

Program development boards and other custom circuit boards

3 products

PLCs

Program complex automation jobs by combining the functionality of a relay, timer relay, and switch

7 products

Circuit Board Headers

Make quick connections to development boards and other circuit boards when prototyping

20 products

Development Board Cords

Connect your development board to components such as sensors and actuators

7 products

Circuit Board Connectors

Connect flat flexible cable to circuit boards

10 products

Circuit Board Cable

Flat and flexible, connect circuit boards inside electronic devices

20 products

Proximity Sensors

Detect the presence or position of objects from a short sensing distance

2 products

Snap-Acting Switches

Open and close circuits quickly to minimize arcing and sticking; often used as door-open indicators

23 products

Electronic Component Assortments

Include diodes, rectifiers, and transistors to convert current or amplify electronic signals

2 products

USB Connectors

Plugs, sockets, receptacles, and adapters to make USB connections

14 products

Molex Connectors

Plugs, sockets, and housings for making Molex connections

47 products

Amphenol Connectors

Attach wires to a circuit board

16 products

D-Sub Connectors

Plugs, sockets, receptacles, and adapters for connecting computers, monitors, and printers

18 products

Audio Receptacles

Install in walls and panels and pair with plugs to make audio connections

7 products

RJ45 Sockets

Pair with plugs to make Ethernet connections

2 products

Power Receptacles

Install in a wall or panel to transmit power to plugs or sockets

15 products

ix Industrial Sockets

Pair with plugs to add ix Industrial connections to printed circuit boards

6 products

Terminal Blocks

Create tidy rows of wire connections that you can identify, test, and adjust on the spot

25 products

Circuit Board Cords

Short lengths of terminated wire make temporary connections on circuit boards

24 products

Wrap Wire

Wrap around a circuit board post terminal without the need for soldering

11 products

Battery Holders

Create an electrical connection between batteries and contacts to power equipment

10 products

Battery Contacts

Add or replace contacts in battery holders and circuit boards

7 products

Potting Boxes

Fill with potting compound to protect electronic assemblies from dust, moisture, and vibration

16 products

Thermal Interface Pads

Soft and flexible, so they conform to rough surfaces and fill gaps between two surfaces

8 products

Fabricating and Machining

Electronic-Component Positioning Stands

Pin components against a circuit board to free up your hands for soldering

1 product

Vises

Secure workpieces in place

16 products

Spring Clamp Workholders

Secure small parts in spring clamps to keep hands free for soldering, gluing, and assembling

7 products

Toggle Clamps

Lock workpieces onto worktables or objects

15 products

Communication

Display Screens

Display text, numbers, symbols, and other information from your electronics

23 products

Lighting

Light Bulbs

Standard household, miniature, compact, tubular, and ultraviolet bulbs

31 products

Light Pipes

Concentrate and direct light from the bulb on a circuit board to a display

16 products

Light Transmitters

Light up small and hard-to-reach areas such as the inside of models, prototypes, and circuit boards

18 products