# The cost implications of HDI vs higher layer count

**URL:** <https://sierraconnect.protoexpress.com/t/the-cost-implications-of-hdi-vs-higher-layer-count/3679>\
**Category:** Design and Layout\
**Tags:** dfm\
**Created:** [November 6, 2025, 3:00pm UTC](https://sierraconnect.protoexpress.com/t/the-cost-implications-of-hdi-vs-higher-layer-count/3679 "2025-11-06T15:00:02Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![broy](https://avatars.discourse-cdn.com/v4/letter/b/bbe5ce/32.png) [@broy](https://sierraconnect.protoexpress.com/u/broy)\
**Post date:** [November 6, 2025, 3:00pm UTC](https://sierraconnect.protoexpress.com/t/the-cost-implications-of-hdi-vs-higher-layer-count/3679/1 "2025-11-06T15:00:02Z")

</div>

I am working on a relatively large board 20-30in^2 and I want to understand the cost difference between a 12 layer HDI and a 16 layer standard pcb. Beyond that I am interested to understand general cost per layer and the cost difference between the three different HDI types.

---

<div class="post-metadata">

**Author:** ![lucy.sierracircuits](https://sea2.discourse-cdn.com/sierraconnect/user_avatar/sierraconnect.protoexpress.com/lucy.sierracircuits/32/8_2.png) [@lucy.sierracircuits](https://sierraconnect.protoexpress.com/u/lucy.sierracircuits)\
**Post date:** [November 7, 2025, 3:44am UTC](https://sierraconnect.protoexpress.com/t/the-cost-implications-of-hdi-vs-higher-layer-count/3679/2 "2025-11-07T03:44:20Z")

</div>

It’s a hard question. We would need to know from which layer to which layer is the layer drill.