Working with the SMD Neck-Down Design Rule on a PCB in Altium Designer

Created: 3月 17, 2022 | Updated: 3月 18, 2022 | Applies to version: 21

This document is no longer available beyond version 21. Information can now be found here: SMD Neck-Down Rule for version 25

注記

利用できる機能は、Altium 製品のアクセスレベルによって異なります。Altium Designer ソフトウェアサブスクリプションの様々なレベルに含まれる機能と、Altium 365 プラットフォームで提供されるアプリケーションを通じて提供される機能を比較してください。

ソフトウェアの機能が見つからない場合は、Altium の営業担当者に連絡して詳細を確認してください。

Rule category: SMT

Rule classification: Unary

Summary Copy Link Copied

This rule specifies the maximum ratio of the track width to the SMD pad width, expressed as a percentage.

All design rules are created and managed within the PCB Rules and Constraints Editor dialog. For a high-level view of working with the design rules system, see Defining, Scoping & Managing PCB Design Rules.

Constraints Copy Link Copied

Default constraints for the SMD Neck-Down rule.

Neck-Down - the percentage value for the maximum permissible ratio of track width to SMD pad width. Entering a larger value will allow for the use of greater width track.

How Duplicate Rule Contentions are Resolved Copy Link Copied

All rules are resolved by the priority setting. The system goes through the rules from highest to lowest priority and picks the first one whose scope expression matches the object(s) being checked.

Rule Application Copy Link Copied

Online DRC and Batch DRC.

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