FPC / PCB 工程計算機

爬電距離與電氣間隙計算器：PCB 電壓間距

依工作電壓、最小間距、電壓斜率與安全係數，初步估算 PCB clearance / creepage 電壓間距。

電壓間距估算器怎麼用

電壓間距會影響 short risk、耐壓測試與安全距離。這個工具採用使用者自訂設計規則，適合做 layout 初期 clearance / creepage 快速估算，正式值仍需依產品適用標準確認。

Creepage and clearance spacing affects short risk, dielectric withstand testing and safety distance. This calculator uses a user-defined rule for early layout review before formal standard confirmation.

User-rule creepage and clearance spacing

公式: Recommended spacing = (minimum spacing + voltage / 100 x slope) x safety factor

  • Minimum spacing: baseline distance required by your internal rule.
  • Slope: additional spacing per 100 V.
  • Safety factor: multiplier for margin, contamination or process risk.
  • Design spacing: actual conductor-to-conductor spacing on the layout.

公式依據

  • Formula basis: editable internal-rule model for early clearance planning.
  • Reference: IEC 60664-1 defines the insulation-coordination framework used for clearance and creepage decisions in low-voltage equipment. https://webstore.iec.ch/en/publication/59671
  • Engineering note: this is not an official IEC, UL or IPC safety-spacing calculator; final clearance and creepage must follow the required product standard.

範例

With 50 V, 0.10 mm minimum, 0.10 mm per 100 V and 1.5x safety factor, recommended spacing is 0.225 mm.

輸入欄位

  • Working voltage
  • Design spacing
  • Minimum spacing
  • Voltage slope
  • Safety factor

結果輸出

  • Recommended spacing
  • Design margin
  • Pass / warning indication

工程注意事項

  • This is not a substitute for IEC, UL, IPC, customer or product-specific safety rules.
  • Creepage and clearance may differ depending on pollution degree, material group, coating and environment.
  • Use this planner to encode your internal rule or factory guidance before formal review.

驗證檢查

  • Trace-to-trace spacing
  • Pad-to-pad spacing
  • Hi-pot planning
  • Customer voltage class

相關製程站

  • 線路設計 - Trace width, spacing, bend-zone routing, differential pair spacing
  • 電測 - Open / short, resistance, voltage drop, impedance coupon

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FAQ

Is this an official safety standard calculator?

No. It is a user-rule planner. Final safety spacing should follow the required product standard and customer specification.

Why make the rule editable?

Different products and factories use different spacing rules. Editable parameters make it easy to replace the default with your own formula later.