# Webinar: Aerospace PCB Design Challenges and Techniques to Fix Them

**URL:** <https://sierraconnect.protoexpress.com/t/webinar-aerospace-pcb-design-challenges-and-techniques-to-fix-them/4126>\
**Category:** Webinars & Events\
**Tags:** aerospace\
**Created:** [June 8, 2026, 9:12pm UTC](https://sierraconnect.protoexpress.com/t/webinar-aerospace-pcb-design-challenges-and-techniques-to-fix-them/4126 "2026-06-08T21:12:38Z")\
**Posts on this page:** 2\
**Page:** 1

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**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:** [June 8, 2026, 9:12pm UTC](https://sierraconnect.protoexpress.com/t/webinar-aerospace-pcb-design-challenges-and-techniques-to-fix-them/4126/1 "2026-06-08T21:12:38Z")

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Thanks for your interest in our webinar on aerospace PCB design challenges.

**Missed the webinar?** Click the link below to watch the recording and get the slides.

> **Webinar: Aerospace PCB Design Challenges and Techniques to Fix Them**
>
> **Starts:** June 24, 2026, 9:00am (America/Los\_Angeles)\
> **Ends:** June 24, 2026, 10:00am (America/Los\_Angeles)\
> **Location:** https://www.protoexpress.com/webinars/aerospace-pcb-design-challenges/?utm\_source=sierraconnect&utm\_medium=display&utm\_campaign=feed%2B2026

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<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:** [July 2, 2026, 12:59am UTC](https://sierraconnect.protoexpress.com/t/webinar-aerospace-pcb-design-challenges-and-techniques-to-fix-them/4126/2 "2026-07-02T00:59:28Z")

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| Question | Answer |
| --- | --- |
| What is the reliability of the via-in-pad or microvia-in-pad? | Both via-in-pad and microvia-in-pad structures are highly reliable, provided the PCB fabricator has the expertise to manufacture them correctly and complies with all applicable IPC requirements. Since laser-drilled microvias are more challenging to fabricate, it is recommended to ask your fabricator about their laser drilling process to ensure maximum reliability. |
| Can we use stacked microvias for aerospace? | Yes, stacked microvias meet IPC Class 3 and Class 3A requirements and can be used in aerospace PCBs. However, stacked microvias are subject to internal stress, which can affect their long-term reliability. Therefore, it is important to fully understand the operating environment and the mechanical and thermal stresses the board will experience before choosing this via structure. |