Printed Circuit Boards | McMaster-Carr

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Number of Rows

Number of Copper Clad Sides

Hole Diameter

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578 Products

Electrical

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

23 products

Development Board Sensor Modules

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

17 products

Development Board Programming Modules

Program development boards and other custom circuit boards

2 products

Development Board Holders

Keep a development board and breadboard in one spot for prototyping

1 product

Single-Board Computers

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

17 products

PLCs

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

1 product

Sensor Switches

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

2 products

Snap-Acting Switches

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

28 products

Circuit Board Headers

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

20 products

Electrical Plugs

Pair with sockets or receptacles to transmit power or data

52 products

Electrical Sockets

Pair with plugs or receptacles to transmit power or data

73 products

Development Board Cords

Connect your development board to components such as sensors and actuators

7 products

Terminal Blocks

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

25 products

Electrical Cords

Connect equipment and devices to a power supply

1 product

Electrical Wire

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

32 products

Electrical Connector Contacts

Crimp wire into pins and sleeves to create custom Molex or Amphenol connectors

6 products

Circuit Board Cable

Flat and flexible, connect circuit boards inside electronic devices

20 products

Potting Boxes

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

16 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

Thermal Interface Material

Dissipate heat away from electronic components

8 products

Electronic Component Kits

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

2 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

10 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, ultraviolet, infrared, and blacklight 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