PCB 跟踪 Width 计算器
使用此免费在线工具计算 pcb 微量宽度
PCB Trace Width Calculator
IPC-2221 standard trace width for current carrying capacity
Based on IPC-2221 standard. Internal traces = inside PCB layers, External = top/bottom layers.
Required Trace Width (IPC-2221)
External Layer
11.9 mil
0.302 mm
Internal Layer
30.9 mil
0.786 mm
Parameters
Copper thickness: 1.37 mil (34.8 μm)
Cross-section area (ext): 16.30 sq mil
Cross-section area (int): 42.39 sq mil
Add 10–20% safety margin for production variability. Vias and thermal relays may require additional width.
Pcb 走线宽度计算器 — 免费、快速，可在浏览器中运行。无需设置，只需打开并开始使用即可。
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🔧 Electronics & Arduino
类型
⚡ 在浏览器中处理
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