> For the complete documentation index, see [llms.txt](https://docs.quilter.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.quilter.ai/physics-rule-checks-prcs/pin-distance.md).

# Pin Distance

### Description

**Pin Distance** calculates the Euclidian distance between the closest edges of two pins.

**Passing Criteria:** This check passes is the pin distance falls below a specified tolerance

**Reporting Units:** \
CENTIMETERS (cm)

### **Examples**

**Passing Message:** 

{% hint style="success" %}
Pin distance of 0.13cm within acceptable range (0cm to 1cm)
{% endhint %}

**Failing Message:** 

{% hint style="danger" %}
Pin distance of 1.11cm outside acceptable range (0cm to 1cm)
{% endhint %}

### Physics Justification

Minimizing the pin distance is important because it: 

* **Reduces Trace Lengths** \
  Shorter traces mean lower parasitic inductance and resistance, which improves signal integrity and power delivery.
* **Minimizes Loop Area** \
  Smaller loops reduce susceptibility to electromagnetic interference (EMI) and radiated noise.
* **Improves Routing Efficiency** \
  Compact pin placement contributes to cleaner and more manageable routing, especially in densely designed circuits.


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