This page explains how Printed Circuit Boards is classified within Computer, Electronic and Optical Product Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.
A laminated substrate that mechanically supports and electrically connects electronic components using conductive tracks, pads, and other features etched from copper sheets.
Technical details and manufacturing context for Printed Circuit Boards
| Parameter | Typical range | Notes & selection driver |
|---|---|---|
| Number of LayersRequired | 1–20 layers | Total number of conductive copper layers in the PCB stackup |
| Board ThicknessRequired | 0.4–3.2 mm | Overall thickness of the finished PCB including all layersIPC-6012 |
| Copper WeightRequired | 0.5–3 oz/ft² | Thickness of copper on each layer, typically expressed as ounces per square footIPC-6012 |
| Minimum Trace WidthRequired | 0.075–0.2 mil | Smallest width of copper traces that can be reliably manufacturedIPC-2221 |
| Minimum Hole SizeRequired | 0.15–0.3 mm | Smallest diameter for drilled holes including vias and component mounting holesIPC-2221 |
| Operating Temperature RangeRequired | -40–85 °C | Temperature range within which the PCB maintains structural integrity and electrical performanceIPC-2221 |
| Surface Finish | HASL, ENIG, OSP | ENIG for flatness and shelf life; HASL for cost.IPC-4552 |
| Maximum Board Size | 500×600 mm | Larger sizes may require panelization. |
| Minimum Solder Mask Dam | 0.075 mm | Narrower dams risk solder bridging.IPC-2221 |
| Impedance Tolerance | ±10 % | Controlled impedance for high-speed signals.IPC-2141 |
| Dielectric Constant (Dk) | 3.5–4.5 | FR4 typical 4.2; lower Dk for high-frequency.IPC-4101 |
| Peel Strength | 1.0–1.4 N/mm | Minimum 0.8 N/mm for reliability.IPC-6012 |
| Warpage | ≤0.75 % | Excessive warp causes assembly issues.IPC-6012 |
| Flammability Rating | 94V-0 | V-0 required for most consumer electronics.UL 94 |
Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.
Commonly used trade names and technical identifiers for Printed Circuit Boards.
| pressure: | Atmospheric to 1 atm (standard), specialized designs up to 5 atm for conformal coating |
| other spec: | Humidity: 5-95% non-condensing, Dielectric strength: 500-1500 V/mil |
| temperature: | -40°C to +130°C (operational), up to +260°C (soldering peak) |
Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.
Quoted from the published standard.
12 companies list this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.
Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.
A practical evidence checklist for RFQ preparation and supplier evaluation.
CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.
According to the reference data, PCBs can have 1 to 20 conductive copper layers. The specific number depends on the circuit complexity and application requirements. Always confirm the required layer count with the manufacturer for your design.
The reference range is -40°C to 85°C. This is based on IPC-2221. However, actual performance may vary with materials and design. Verify the temperature rating for your specific PCB with the supplier.
Common finishes include HASL, ENIG, and OSP. Each has trade-offs in flatness, shelf life, and cost. The choice depends on the application and assembly process. Refer to IPC-4552 for finish specifications.
Quality is verified through parameters such as impedance tolerance (±10%), peel strength (1.0-1.4 N/mm), warpage (≤0.75%), and flammability rating (94V-0). These are specified in standards like IPC-6012 and UL 94. Always request test reports from the manufacturer.
Editorial classification, named public sources where available, and source-reviewed manufacturer records.
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