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PCB Design Blog

Ingeniørindsigt, Tutorials & Bedste Praksis

Dybdegående artikler om PCB sporbredde beregninger, via dimensionering, impedanskontrol og industristandarder. Skrevet af ingeniører, til ingeniører.

IngeniørguideStandarderDesignguideBedste praksisHigh-speed designVærktøjer

Alle Artikler (32)

Ingeniørguide24. april 2026• 11 min

PCB Current Derating for Enclosed Products

How to derate PCB current in sealed or fanless products. Practical copper-width, temperature-rise, via, and procurement guidance for boards that run hot inside enclosures.

Current DeratingEnclosed ElectronicsHigh Current PCB
Ingeniørguide23. april 2026• 11 min

Sporbreddeplanlægning for PCB'er til batteristyringssystem

Praktisk BMS PCB-sporingsbreddevejledning til pakkestrøm, cellefølingsruting, balanceringsmodstande, sikringer, kontaktorer, vias og indkøbsgennemgange før fremstilling.

BMS PCBBattery Management SystemTrace Width
Ingeniørguide22. april 2026• 10 min

Hvornår skal man bruge termiske vias under varme komponenter

Praktisk vejledning om, hvornår termiske vias under QFN'er, regulatorer, LED'er, MOSFET'er og strømmoduler forbedrer PCB-temperaturen, og hvornår de i stedet skaber lodde-, omkostninger- eller samlingsproblemer.

Thermal ViasThermal PadPCB Thermal Design
Ingeniørguide21. april 2026• 11 min

Mixed-Signal PCB Return Path Fejl, der forårsager støj

Praktisk vejledning om PCB-returfejl med blandet signal, der skaber ADC-støj, jordblænding og EMC-problemer. Lær, hvornår du skal undgå flyopdelinger, hvor du skal sy vias, og hvordan du gennemgår konverterkrydsninger før frigivelse.

Mixed-Signal PCBReturn PathGround Plane
Ingeniørguide20. april 2026• 12 min

How to Choose Copper Weight for Power Electronics PCBs

Practical guidance for selecting 1oz, 2oz, or heavier copper on power electronics PCBs. Learn when copper weight solves a real problem, when wider pours are enough, and what buyers should confirm before fabrication.

Copper WeightPower Electronics PCBHigh Current PCB
Ingeniørguide19. april 2026• 11 min

IPC-2152 Temperature Rise Examples for Real Boards

Real PCB current-carrying examples using IPC-2152 thinking. See how layer, copper weight, bottlenecks, and board context change the trace width you should actually release to fabrication.

IPC-2152Temperature RiseTrace Width
Ingeniørguide18. april 2026• 9 min

Designing PCB Traces for PoE Current Levels

Practical PoE PCB guidance for 802.3af, 802.3at, and 802.3bt. Size the 48V path, bridge, vias, and bottlenecks without overbuilding every Ethernet-adjacent trace.

PoE PCBPower over EthernetTrace Width
Ingeniørguide17. april 2026• 10 min

Sådan dimensioneres kobber til Motor Driver Boards

Praktisk vejledning til valg af 1 oz vs 2 oz kobber, spor- og hældningsstørrelse, via tælling og spændingsfaldsmål på motordriver-printkort.

Motor Driver PCBCopper WeightHigh Current PCB
Ingeniørguide17. april 2026• 9 min

PCB Trace Width for CAN Bus Routing

How wide should CAN bus traces be on a PCB? Practical routing guidance for CAN and CAN FD, including width targets, pair symmetry, impedance considerations, and fab-ready checkpoints.

CAN BusCAN FDTrace Width
Standarder20. december 2024• 8 min

IPC-2221 vs IPC-2152: Which to Use?

A comprehensive comparison of the two major PCB current carrying capacity standards. Learn when to use each and how they differ in trace width calculations.

IPC-2221IPC-2152PCB Standards
Designguide18. december 2024• 10 min

PCB Copper Weight: 0.5oz vs 1oz vs 2oz

Compare 0.5oz, 1oz, and 2oz PCB copper weights. Real-world applications, cost trade-offs, and trace width impacts explained.

Copper WeightPCB ManufacturingTrace Width
Bedste praksis16. december 2024• 12 min

10 Common PCB Trace Width Mistakes

Avoid costly PCB redesigns by learning the most common trace width mistakes. From temperature rise to manufacturing tolerances.

Trace WidthPCB MistakesDesign Tips
Designguide14. december 2024• 9 min

Thermal Via vs Signal Via Design

Understanding the key differences between thermal vias and signal vias is crucial for effective PCB design. Learn sizing, placement, and when to use each type.

Thermal ViaSignal ViaVia Design
Ingeniørguide12. december 2024• 11 min

Via Sizing: How Many Vias Needed?

Calculate the exact number of vias needed for your PCB. Engineering formulas for current requirements with practical examples.

Via SizingVia CountCurrent Capacity
High-speed design10. december 2024• 14 min

Microstrip vs Stripline vs CPW Guide

Compare microstrip, stripline, and coplanar waveguide for high-speed PCB design. Impedance calculations and use cases.

MicrostripStriplineCoplanar
High-speed design8. december 2024• 15 min

High-Speed Impedance: USB, HDMI, PCIe

Complete reference guide for high-speed interface impedance requirements. Covers USB 2.0/3.0, HDMI, PCIe Gen 1-5, DDR3/4/5, and more with practical design tips.

USBHDMIPCIe
Værktøjer6. december 2024• 7 min

5 Free PCB Calculators for Engineers

Essential online calculators for PCB design: trace width, via current, impedance, and more. Boost your productivity with these free tools.

PCB CalculatorsFree ToolsEngineering Tools
Bedste praksis4. december 2024• 13 min

PCB Design Checklist: 25 Key Points

Never send a flawed PCB to manufacturing again. 25-point checklist covering trace widths to impedance matching.

ChecklistManufacturingDFM
Designguide2. december 2024• 10 min

Internal vs External PCB Layers

Thermal and electrical differences between internal and external PCB layers. How layer choice affects trace width and heat.

Internal LayerExternal LayerPCB Stackup

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