# \#bga **URL:** https://sierraconnect.protoexpress.com/tag/bga/3.md [Latest](https://sierraconnect.protoexpress.com/latest.md) · [Categories](https://sierraconnect.protoexpress.com/categories.md) · [Tags](https://sierraconnect.protoexpress.com/tags.md) --- ## [What's your approach to BGA fanout before routing the rest of the board?](https://sierraconnect.protoexpress.com/t/whats-your-approach-to-bga-fanout-before-routing-the-rest-of-the-board/4336)
**Author:** [@milan](https://sierraconnect.protoexpress.com/u/milan)\ **Replies:** 2\ **Last updated:** [August 5, 2026, 2:33pm UTC](https://sierraconnect.protoexpress.com/t/whats-your-approach-to-bga-fanout-before-routing-the-rest-of-the-board/4336 "2026-08-05T14:33:39Z")
BGA escape routing is often one of the most challenging parts of PCB layout, especially for fine-pitch devices. It’s tempting to start routing interfaces immediately, but doing so too early can make it difficult to escap… --- ## [Ask Me Anything about BGA Fanout](https://sierraconnect.protoexpress.com/t/ask-me-anything-about-bga-fanout/2806)
**Author:** [@lucy.sierracircuits](https://sierraconnect.protoexpress.com/u/lucy.sierracircuits)\ **Replies:** 10\ **Last updated:** [January 31, 2025, 9:10am UTC](https://sierraconnect.protoexpress.com/t/ask-me-anything-about-bga-fanout/2806 "2025-01-31T09:10:00Z")
Join our next Ask Me Anything about BGA fanout where you can ask us questions on: Best practices for BGA fanout Handling high pin-count BGAs Avoiding common pitfalls in routing And much more! Post questions before: J… --- ## [CAPTION THIS: I'm not complicated, I'm just well-connected!](https://sierraconnect.protoexpress.com/t/caption-this-im-not-complicated-im-just-well-connected/2807)
**Author:** [@lucy.sierracircuits](https://sierraconnect.protoexpress.com/u/lucy.sierracircuits)\ **Replies:** 0\ **Last updated:** [January 14, 2025, 5:42pm UTC](https://sierraconnect.protoexpress.com/t/caption-this-im-not-complicated-im-just-well-connected/2807 "2025-01-14T17:42:01Z")
poll --- ## [BGA sizes issues](https://sierraconnect.protoexpress.com/t/bga-sizes-issues/1467)
**Author:** [@ayauho](https://sierraconnect.protoexpress.com/u/ayauho)\ **Replies:** 9\ **Last updated:** [June 19, 2024, 3:45pm UTC](https://sierraconnect.protoexpress.com/t/bga-sizes-issues/1467 "2024-06-19T15:45:50Z")
I’m designing BGA routing of size 0.5 mm. Initially I used smaller via hole and diameter and track clearance. After validation with Sierra plugin, it warned, that minimum via hole is 0.2 mm, via diameter 0.4 mm and trac… --- ## [New HDI BGA Breakouts and Routing Strategies](https://sierraconnect.protoexpress.com/t/new-hdi-bga-breakouts-and-routing-strategies/1104)
**Author:** [@lucy.sierracircuits](https://sierraconnect.protoexpress.com/u/lucy.sierracircuits)\ **Replies:** 1\ **Last updated:** [March 20, 2024, 9:50pm UTC](https://sierraconnect.protoexpress.com/t/new-hdi-bga-breakouts-and-routing-strategies/1104 "2024-03-20T21:50:50Z")
The recording link is below. --- ## [Case Study: Designing an HDI Board with 0.4 and 0.65 mm BGAs](https://sierraconnect.protoexpress.com/t/case-study-designing-an-hdi-board-with-0-4-and-0-65-mm-bgas/1226)
**Author:** [@PoulomiG](https://sierraconnect.protoexpress.com/u/PoulomiG)\ **Replies:** 0\ **Last updated:** [March 18, 2024, 8:27pm UTC](https://sierraconnect.protoexpress.com/t/case-study-designing-an-hdi-board-with-0-4-and-0-65-mm-bgas/1226 "2024-03-18T20:27:51Z")
Originally published at: https://www.protoexpress.com/blog/case-study-designing-hdi-board-with-4-and-65-mm-bgas/ BGA technology makes it possible to achieve a smaller form factor in PCBs. With a higher pin count, exc… --- ## [How to breakout a .4mm BGA](https://sierraconnect.protoexpress.com/t/how-to-breakout-a-4mm-bga/1225)
**Author:** [@lucy.sierracircuits](https://sierraconnect.protoexpress.com/u/lucy.sierracircuits)\ **Replies:** 1\ **Last updated:** [March 18, 2024, 8:07pm UTC](https://sierraconnect.protoexpress.com/t/how-to-breakout-a-4mm-bga/1225 "2024-03-18T20:07:10Z")
Originally published at: https://www.protoexpress.com/blog/how-to-breakout-a-4mm-bga/ One thing PCB designers will all agree on is that to breakout a BGA, you need precision and discipline. When you break out a BGA, … --- ## [Watch our X-ray system for SMT inspection](https://sierraconnect.protoexpress.com/t/watch-our-x-ray-system-for-smt-inspection/1209)
**Author:** [@lucy.sierracircuits](https://sierraconnect.protoexpress.com/u/lucy.sierracircuits)\ **Replies:** 0\ **Last updated:** [March 13, 2024, 5:32pm UTC](https://sierraconnect.protoexpress.com/t/watch-our-x-ray-system-for-smt-inspection/1209 "2024-03-13T17:32:41Z")
Our standalone X-ray system for SMT electronics is indispensable for PCBs populated with BGAs or QFNs, offering crystal clear X-ray images to ensure perfect analysis and quality assurance, giving your PCB an overall adva… --- ## [TIP: Place decoupling capacitors on the opposite side of the BGA right under the pin itself](https://sierraconnect.protoexpress.com/t/tip-place-decoupling-capacitors-on-the-opposite-side-of-the-bga-right-under-the-pin-itself/958)
**Author:** [@lucy.sierracircuits](https://sierraconnect.protoexpress.com/u/lucy.sierracircuits)\ **Replies:** 0\ **Last updated:** [January 29, 2024, 5:01pm UTC](https://sierraconnect.protoexpress.com/t/tip-place-decoupling-capacitors-on-the-opposite-side-of-the-bga-right-under-the-pin-itself/958 "2024-01-29T17:01:27Z")
This is how BGA will be fanned out with a via that is on the pad. Later, it can be filled with a conductive or non-conductive filling. Read more: Decoupling Capacitor Placement Guidelines | Sierra Circuits --- ## [TIP: ICT test point under a BGA component](https://sierraconnect.protoexpress.com/t/tip-ict-test-point-under-a-bga-component/422)
**Author:** [@lucy.sierracircuits](https://sierraconnect.protoexpress.com/u/lucy.sierracircuits)\ **Replies:** 0\ **Last updated:** [November 13, 2023, 4:52pm UTC](https://sierraconnect.protoexpress.com/t/tip-ict-test-point-under-a-bga-component/422 "2023-11-13T16:52:26Z")
With a significant amount of pressure, exerted by the nails under BGAs, there is a high risk of breaking the solder joints, Hence, it is crucial to avoid placing a test point under a BGA component. At least, leave a 5.08… --- ## [Ask Me Anything with Susy Webb](https://sierraconnect.protoexpress.com/t/ask-me-anything-with-susy-webb/143)
**Author:** [@lucy.sierracircuits](https://sierraconnect.protoexpress.com/u/lucy.sierracircuits)\ **Replies:** 27\ **Last updated:** [October 10, 2023, 6:53pm UTC](https://sierraconnect.protoexpress.com/t/ask-me-anything-with-susy-webb/143 "2023-10-10T18:53:27Z")
Use this thread to post your PCB routing, grid and BGA design questions and Susy Webb will answer on October 5th! --- ## [Exploring PCB Routing, Grids and BGA Design for Quality Boards by Susy Webb](https://sierraconnect.protoexpress.com/t/exploring-pcb-routing-grids-and-bga-design-for-quality-boards-by-susy-webb/95)
**Author:** [@lucy.sierracircuits](https://sierraconnect.protoexpress.com/u/lucy.sierracircuits)\ **Replies:** 0\ **Last updated:** [September 7, 2023, 11:23pm UTC](https://sierraconnect.protoexpress.com/t/exploring-pcb-routing-grids-and-bga-design-for-quality-boards-by-susy-webb/95 "2023-09-07T23:23:52Z")
Price per seat: $245 Location: Zoom