# 4 Layers 1.6mm 35µm Stackup

**URL:** <https://community.aisler.net/t/4-layers-1-6mm-35-m-stackup/5457>\
**Category:** 🚀 Services and Capabilities\
**Created:** [December 1, 2025, 2:04pm UTC](https://community.aisler.net/t/4-layers-1-6mm-35-m-stackup/5457 "2025-12-01T14:04:15Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![Manuel-from-AISLER](https://community-cdn.aisler.net/user_avatar/community.aisler.net/manuel-from-aisler/32/184_2.png) [@Manuel-from-AISLER](https://community.aisler.net/u/Manuel-from-AISLER)\
**Post date:** [December 1, 2025, 2:04pm UTC](https://community.aisler.net/t/4-layers-1-6mm-35-m-stackup/5457/1 "2025-12-01T14:04:15Z")

</div>

## Stackup

 ![AISLER_Stackup_4L-1.6](https://community.aisler.net/uploads/default/original/2X/1/112b68b5ca7ad6db93dcabb82f8346bbab3e965f.png)

Final Thickness: 1.6 mm +/- 10%

## Impedances

The following track layouts can be used to realize defined impedance. Please note that these values only provide a basic orientation. Interference factors such as angles, meanders or vias in the routing of the tracks may negatively affect the intended impedance.

| Type | Resistance [Ω] | Signal | Reference | Width [µm] | Space [µm] | Width [µm] |
| --- | --- | --- | --- | --- | --- | --- |
| SE | 50 | TOP | IN1 | 295 | - | - |
| DP | 90 | TOP | IN1 | 260 | 135 | 260 |
| DP | 100 | TOP | IN1 | 220 | 150 | 220 |
| SE | 50 | BOT | IN2 | 295 | - | - |
| DP | 90 | BOT | IN2 | 260 | 135 | 260 |
| DP | 100 | BOT | IN2 | 220 | 150 | 220 |

SE = Single Ended, DP = Differential Pairs