PCB Boards | McMaster-Carr

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1,462 Products

Electrical

Circuit Boards

Create your own circuit board designs by adding components

Development Boards

Development Boards

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

Single-Board Computers

Single-Board Computers

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

Edge Controllers

Edge Controllers

Use in automated systems to monitor sensors, control actuators, and support wireless connections

Manual Switches

Manual Switches

Everything from toggle, push-button, and rocker switches to foot switches

Transistors

Boost weak electrical signals and rapidly control data transmission

Sensor Switches

Sensor Switches

Detect moving objects from a distance, triggering a circuit to open or close

Snap-Acting Switches

Snap-Acting Switches

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

Relays

Electrically open and close circuits to control power to lights, motors, and other equipment

Magnetic Switches

Magnetic Switches

Actuate when a magnet comes within sensing distance; often used to detect when doors or windows open

Development Board Cords

Development Board Cords

Connect your development board to components such as sensors and actuators

Terminal Blocks

Terminal Blocks

Mate with terminals to complete circuits in control panels, motors, and small machines

Electrical Wire

Electrical Wire

Make single-wire connections; generally for lower voltages and shorter distances than cable

Circuit Board Terminals

Circuit Board Terminals

Connect wire to circuit boards

Circuit Board Headers

Circuit Board Headers

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

Electrical Connectors and Cords

Electrical Connectors and Cords

Supply power to equipment by combining plugs, sockets, receptacles, and cords

Electrical Cable

Electrical Cable

Make multi-wire connections; generally for higher voltages and longer distances than wire

Battery Holders

Battery Holders

Create an electrical connection between batteries and contacts to power equipment

Battery Contacts

Battery Contacts

Add or replace contacts in battery holders and circuit boards

Circuit Board Capacitors

Circuit Board Capacitors

Store electrical energy then release it all at once to briefly boost power to circuit boards

Thermal Interface Material

Thermal Interface Material

Dissipate heat away from electronic components

Resistors

Limit the electrical current flowing through circuits, adjust signal levels, and divide voltages

Circuit Board Voltage Regulators

Circuit Board Voltage Regulators

Power circuits from a high-voltage source without frying your system

Varistors

Protect sensors, programmable logic controllers, and other small components from electrical surges

Diodes

Route current in one direction and block it in the other to protect sensitive electronics

Electronic Component Kits

Electronic Component Kits

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

Potting Boxes

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

Transformers

Raise or lower voltage to meet the needs of an individual circuit

Rectifiers

Convert AC voltage to a constant DC voltage on a circuit board

Inductors

Resist changes in current to protect circuit board components from surges

Fabricating and Machining

Electronic-Component Workholders

Electronic-Component Workholders

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

Spring Clamp Workholders

Spring Clamp Workholders

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

Vises

Secure workpieces in place

Clamps

Hold workpieces securely in place

Fluid Handling

Pressure Transmitters

Pressure Transmitters

Send pressure readings to controllers and remote displays

Communication

Display Screens

Display Screens

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

RFID Reader/Writers

RFID Reader/Writers

Scan RFID tags and cards to track inventory or grant building access

Lighting

Light Bulbs

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

Light Transmitters

Light Transmitters

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

Light Pipes

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

Measuring and Inspecting

Load Cells

Measure forces and send them to computers to monitor and trigger actions in machinery

The quick brown fox jumped over the lazy dog. Pedestal (35" Ht. x 4" Wd. x 4" Dp.)