Bare PCB

Part

Aurora 2ch mixer board arrived (2009-07-28 11.20.55 by c-g.).jpg · Commons ↗ Report photo

Unpopulated printed circuit board: copper traces etched on an FR-4 glass-epoxy laminate that carry current between the components later soldered to it.

Type	Bare printed circuit board (PCB)
Substrate	FR-4 woven-glass epoxy
Copper	1–2 oz, 1–8+ layers
Finish	ENIG / HASL / OSP
Min feature	~0.1 mm trace/space
Used in	5635 assemblies
Class	Part

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Overview

A bare PCB is the rigid board that mechanically holds and electrically connects every component on an electronic assembly, before any parts are soldered to it. In this graph it is the common substrate beneath every control board, BMS, inverter logic board, and ECU.

Construction

The core is FR-4, woven fibreglass cloth impregnated with epoxy resin and clad with copper foil. Traces are etched from that copper to form the wiring; multilayer boards stack several copper layers separated by resin prepreg, with plated vias drilling vertical connections between them. A solder mask (the green coating) insulates everything except the pads, and a silkscreen prints labels. Exposed pads get a surface finish, ENIG (gold over nickel), HASL (tin-lead/tin), or OSP, to stay solderable.

Manufacturing and role

Boards are made by laminating the layers, drilling, electroless-then-electrolytic copper plating the holes, imaging and etching the pattern, applying mask and silkscreen, and routing to shape. A higher layer count buys more routing density and better power/ground planes for fast or noisy circuits. On its own the bare board does nothing; it becomes a working assembly only when the SMD Passive (R/C/L), Microcontroller, connectors, and power devices are placed and reflow-soldered onto it, which is why those parts sit beside it in every electronics BOM here. '.trim()

3D model

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Where the bare PCB is used

2,441 products across 50 domains contain it, directly or inside a sub-assembly

Machinery & Industrial 171 Casting Fettling Machine, Injection Molding Machine, Investment Casting Shell Line, All-Electric Injection Molding Machine, Twin-Wire Arc Spray, Dynamic Balancing Machine, Ballpoint Pen Assembly Machine, Banbury Internal Mixer, and 163 more
Machine Tools & Metalworking 153 CNC Milling Machine, Centering and Facing Machine, Bar Chamfering Machine, CNC Lathe, Compression Spring Coiler, Spring End Grinding Machine, Torsion Spring Coiler, CNC Wire Forming Machine, and 145 more
Food & Beverage Processing 118 Drum Drying Machine, Fluid Bed Dryer, Industrial Freeze Dryer, Spray Drying Tower, Vacuum Belt Dryer, Aseptic Filler, Automatic Filleting Machine, Automatic Espresso Tamper, and 110 more
Printing & Packaging Machinery 97 Plastic Bag Making Machine, Corrugator (Single-Facer), Gravure Printing Press, Packaging & Filling Line, Blister Packaging Machine, Front-and-Back Labeler, Thermoform-Fill-Seal Machine, Aerosol Filling Machine, and 89 more
Construction & Earthmoving 88 Rebar Shearing and Bending Line, Excavator, Asphalt Milling Machine, Asphalt Paver, Asphalt Recycler, Backhoe Loader, Bulldozer, Main Beam Tunnel Boring Machine, and 80 more
Medical Devices 78 Surgical Robot, Anesthesia Machine, Apheresis Machine, Clinical Audiometer, Autorefractor, Biofeedback System, Bladder Scanner, Blood Bank Refrigerator, and 70 more
Power & Energy 73 DC Fast Charger, Home Battery Storage, Solar Inverter, Air-Insulated Substation Bay, Bottom Ash Handling System, Automatic Transfer Switch, Automatic Voltage Regulator, Battery Swap Station, and 65 more
Material Handling 73 Forklift, Articulated Forklift, AS/RS Stacker Crane, Automated Guided Cart (AGV), Bag Dump Station, Bag Palletizer, Vacuum Lifting Beam, Inclined Belt Conveyor, and 65 more
Textiles & Apparel Machinery 71 Air-Jet Loom, Air-Jet Spinning Machine, Automatic Fabric Cutting Machine, Bartack Sewing Machine, Belt Loop Attaching Machine, Cotton Blowroom Line, Button Attaching Machine, Buttonhole Sewing Machine, and 63 more
Robotics & Automation 70 Delta Pick-and-Place Robot, 6-Axis Industrial Robot Arm, SCARA Robot, Welding Robot Cell, Humanoid Robot, AGV Mobile Robot, Autonomous Warehouse Robot, Arc Welding Robot, and 62 more
Small Kitchen Appliances 67 Air Fryer, Automatic Pan Stirrer, Blender, Bottle Sterilizer, Bread Machine, Bread Maker, Burr Coffee Grinder, Capsule Coffee Machine, and 59 more
Lab & Scientific Instruments 67 Microscope, Analytical Balance, Superconductor Materials Lab, Antenna Analyzer, Arbitrary Waveform Generator, Atomic Absorption Spectrometer, Autoclave Sterilizer, Automatic Titrator, and 59 more
Audio & Video 65 USB Audio Interface, Teleprompter, AV Matrix Switcher, AV Receiver, Portable Boombox, Broadcast Audio Console, Broadcast Studio Camera, Broadcast Graphics Engine, and 57 more
Home Appliances 64 Washing Machine, Air Conditioner, Aroma Diffuser, Automatic Pet Feeder, Beverage Center, Beverage Refrigerator, Bladeless Fan, Boot Dryer, and 56 more
Building & Construction Products 64 Video Intercom System, Video Doorbell, Access Control Panel, Intrusion Alarm Panel, Arena Basketball System, AAC Block Plant, Automated Public Toilet, Automatic Rising Bollard, and 56 more
Consumer Electronics 62 Smartphone, Air Quality Monitor, AR Glasses, Video Baby Monitor, Bluetooth Speaker, Bluetooth Tracker Tag, Bone Conduction Headphones, Car FM Transmitter, and 54 more
Marine 61 Submarine ROV, AIS Transponder, Anchor Handling Tug, Anchor Windlass, Aviary Misting System, Bass Fishing Boat, Cabin Cruiser, Car Ferry, and 53 more
Rail & Transit 59 Commuter EMU, Diesel-Electric Locomotive, Electric Locomotive, Freight Locomotive, Passenger Locomotive, City Bus, High-Speed Trainset, Metro Car, and 51 more
Imaging & Optics 55 Action Camera, Astro Camera, Electronic Autocollimator, Police Body Camera, Borescope Inspection Camera, Cable Camera System, Camera Motion Control Rig, Digital Cinema Camera, and 47 more
Agriculture & Construction 54 Combine Harvester, Agricultural Drone Sprayer, Agricultural Spray Drone, Air Seeder and Cart, Articulated Tractor, Bale Shredder Feeder, Large Square Baler, High Altitude Spraying Machine, and 46 more
Office & Retail Equipment 53 Automated Book Return, Banknote Fitness Sorter, Barcode Scanner, Comb Binding Machine, Overhead Book Scanner, Library Book Sorter, Cash Deposit Machine, POS Cash Drawer, and 45 more
Oil, Gas & Process 52 Amine Gas Sweetening Unit, Oilwell Cementing Unit, Centrifugal Gas Compressor, Wellhead Christmas Tree, Natural Gas City Gate Station, CO2 Injection Pump, Coiled Tubing Unit, Delayed Coker Drum, and 44 more
Automobiles 48 Electric Car, Plug-In Hybrid Car, Taxi Cab, Ambulance, Convertible Car, Coupe Car, Funeral Coach, Gasoline Car, and 40 more
Computing & Peripherals 48 Laptop, Tablet, All-in-One PC, Barcode Verifier, Refreshable Braille Display, Braille Embosser, Video Capture Card, Computer Mouse, and 40 more
Mining & Quarrying 45 Ball Mill, Blast Hole Stemming Loader, Bucket-Wheel Excavator, Carbon Regeneration Kiln, Flotation Column, Continuous Miner, Drill Core Orientation Tool, Walking Dragline, and 37 more
Space Systems 41 Crewed Space Capsule, CubeSat, Mars Science Rover, Sounding Rocket, Space Station Treadmill, Satellite Laser Communication Terminal, Cargo Resupply Spacecraft, Communications Satellite, and 33 more
Renewable Energy 40 Battery Energy Storage System, Biogas Upgrading Unit, Biomass Pellet Boiler, Biomass Pellet Plant, Concentrated Solar Power Receiver, Floating Offshore Wind Turbine, Francis Hydro Turbine, Green Hydrogen Electrolyzer Plant, and 32 more
Toys, Games & Hobby 40 FPV Racing Drone, RC Airplane, RC Boat, RC Car, Air Hockey Table, Animatronic Toy, Arcade Cabinet, Automatic Card Shuffler, and 32 more
Power & Hand Tools 38 Angle Grinder, Belt Sander, Bench Grinder, Circular Saw, Cordless Caulking Gun, Cordless Drill, Demolition Hammer, Die Grinder, and 30 more
Aerospace & Drones 37 Quadcopter Drone, Cargo Delivery Drone, Fixed-Wing Survey Drone, Fixed-Wing UAV, Parcel Delivery Drone, Aircraft APU, Commercial Airliner, Non-Rigid Airship (Blimp), and 29 more
Defense & Security 33 Maritime Patrol Aircraft, Aircraft Carrier, Amphibious Assault Vehicle, Nuclear Attack Submarine, X-Ray Baggage Scanner, EOD Robot, Bomb Disposal Truck, CCTV Camera, and 25 more
Personal Care & Grooming 33 Barrel Sauna, Beard Trimmer, Curling Iron, Electric Callus Remover, Electric Foot Spa, Electric Shaver, Electric Toothbrush, Electrolysis Machine, and 25 more
HVAC & Plumbing 31 Air Curtain, Air Handling Unit, Air Purifier, Cleanroom Air Shower, Ceiling Cassette AC, Ceiling Fan, Centrifugal Chiller, Commercial Kitchen Hood, and 23 more
Lighting & Electrical 31 Aviation Obstruction Light, Emergency Exit Light, LED Floodlight, Theatrical Followspot, LED Grow Light, Heliport Beacon, LED High Bay Light, Landscape Spotlight, and 23 more
Networking & Telecom 29 5G CPE Router, DOCSIS Cable Modem, 5G Base Station, Data Center Switch (Spine), DECT Base Station, DSL Modem Router, Network Tap, Fiber Media Converter, and 21 more
Dental & Veterinary 29 Dental Amalgamator, Dental Apex Locator, Dental Autoclave (Class B), Dental Chair Unit, Dental Oil-Free Compressor, Dental Cone Beam CT, Dental Curing Light, Intraoral Camera, and 21 more
Vending, Kiosks & ATMs 27 Airport Check-In Kiosk, Automated Teller Machine, Book Vending Machine, Bill Change Machine, Currency Exchange Kiosk, Disc Rental Kiosk, Flower Vending Machine, French Fry Vending Machine, and 19 more
Two-Wheelers & Mobility 24 Electric Scooter, Adventure Motorcycle, Chopper Motorcycle, Dual-Sport Motorcycle, Enduro Motorcycle, Motocross Bike, Motorcycle, Sport Motorcycle, and 16 more
Firefighting & Emergency 24 Police Cruiser, Aerial Firefighting Tanker, Aerial Ladder Truck, Air Ambulance Helicopter, Emergency Eyewash Station, Fire Hose Reel, Fire Monitor (Water Cannon), Roadside Assistance Van, and 16 more
Cleaning & Floorcare 22 Robotic Vacuum, Automatic Air Freshener, Auto Towel Dispenser, Automatic Soap Dispenser, Canister Vacuum, Carpet Cleaner, Carpet Extractor, Cordless Stick Vacuum, and 14 more
Pumps, Valves & Fluid 19 Air Compressor, Ball Valve, Butterfly Valve, Canned Motor Pump, Centrifugal Compressor, Centrifugal Pump, Control Valve, Mine Dewatering Pump, and 11 more
Plumbing & Sanitary 15 Electronic Bidet Seat, Water Booster Pump, Grease Interceptor, Greywater Recycling Unit, Heat-Pump Water Heater, Macerating Toilet, HDPE Pipe Butt-Fusion Machine, Pool Automation Controller, and 7 more
Sports & Fitness 14 Smart Fitness Mirror, Anti-Gravity Treadmill, Air Assault Bike, Curved Manual Treadmill, Elliptical Trainer, Exercise Bike, Percussion Massage Gun, Mini Stair Stepper, and 6 more
Garden & Outdoor Power 11 Backpack Power Sprayer, Electric Fence Energizer, Electric Pruning Shears, Electronic Rodent Trap, Greenhouse Heater, Hedge Trimmer, Smart Irrigation Controller, Leaf Blower, and 3 more
Elevators & Escalators 11 Escalator, Boat Lift, Two-Post Car Parking Lift, Dumbwaiter, Building Maintenance Unit (Facade Cradle), Freight Elevator, Home Elevator, Moving Walkway, and 3 more
Bicycles & Cycling 9 GPS Bike Computer, Cargo Bicycle, Cargo E-Bike, Cyclocross Bike, E-Bike, E-Bike Conversion Kit, Power Meter Crankset, Road Bike, and 1 more
Watches & Timepieces 8 Radio-Controlled Atomic Clock, Chess Clock, Digital Desk Clock, GPS NTP Time Server, Quartz Watch, Railway Station Clock, Wall Clock, Watch Winder
Furniture & Durables 7 Adjustable Bed Base, Hotel Minibar, Massage Chair, Pedicure Spa Chair, Recliner Chair, Smart Bassinet, Motorized Standing Desk
Musical Instruments 7 Digital Piano, Guitar Multi-Effects Processor, Electronic Drum Kit, Guitar Amplifier, Pipe Organ, Synthesizer, Theremin
Outdoor & Camping Gear 5 Avalanche Transceiver, Rechargeable Camp Lantern, Electric Fillet Knife, LED Headlamp, Portable Power Station

Used in 5635 assemblies

Sourcing: possible vendors

Browse the supplier directory → Prices, MOQ, and lead times are algorithmic estimates, not quotes, and not claims about these companies. Company mappings are curated by keyword; est. price band $1–$200. How estimates work

Vendor	HQ	Specialty	MOQ	Lead time
🇨🇳JLCPCB jlcpcb.com ↗	Shenzhen, CN	PCB fabrication	100 pcs	2–4 wks
🇨🇳PCBWay pcbway.com ↗	Shenzhen, CN	PCB fab & assembly	100 pcs	2–4 wks
🇨🇳Shennan Circuits scc.com.cn ↗	Shenzhen, CN	PCB manufacturer	100 pcs	2–4 wks
🇮🇳Shogini Technoarts shogini.com ↗	Mumbai, IN	PCB manufacturer	100 pcs	2–4 wks
🇸🇬Venture Corp venture.com.sg ↗	Singapore	Electronics contract mfg	100 pcs	2–4 wks

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