# Connecting GND on BQ27220YZFR DSBGA IC (0.5 mm pitch) **URL:** \ **Category:** ℹ️ Q & A Help Zone\ **Tags:** pcb-design\ **Created:** [September 6, 2026, 8:22am UTC](https://community.aisler.net/t/connecting-gnd-on-bq27220yzfr-dsbga-ic-0-5-mm-pitch/5794 "2026-09-06T08:22:37Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![Arvid1](https://community-cdn.aisler.net/letter_avatar_proxy/v4/letter/a/e19b73/32.png) [@Arvid1](https://community.aisler.net/u/Arvid1)\ **Post date:** [September 6, 2026, 8:22am UTC](https://community.aisler.net/t/connecting-gnd-on-bq27220yzfr-dsbga-ic-0-5-mm-pitch/5794/1 "2026-09-06T08:22:38Z")
The BQ27220YZFR is a BGA package with a fine-pitch of 0.5 mm between solder balls. According to the [4 Layer 35µm ENIG design rules](https://community.aisler.net/t/4-layer-35-m-enig-design-rules/3733), the minimum spacing between copper is 125 µm, with a minimum track width of also 125 µm. With that, it doesn’t seem possible to route the IC in accordance with the design rules. ![image](https://community-cdn.aisler.net/uploads/default/original/2X/8/83a1d7ad3caf6be22820f56bf5aef720e2721c41.png) Can you suggest a suitable way so that I can use the part, and don’t have to have my PCBs manufactured and assembled in China? ---
**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:** [September 8, 2026, 1:19pm UTC](https://community.aisler.net/t/connecting-gnd-on-bq27220yzfr-dsbga-ic-0-5-mm-pitch/5794/2 "2026-09-08T13:19:09Z")
Hi @Arvid1, I’m afraid that’s going to be difficult. What minimum spacing and/or track would you need to route to the GND pad? Generally, for assembly projects, you have the option to send us a custom request via our contact form. Often, a solution can be found by manufacturing the PCBs in a special/custom production run. Alternatively, you could consider capped vias here. However, these are also non-standard and would need to be requested individually. I assume there is no option to use a larger part with lower requirements? 😉 Kind regards, Manuel ---
**Author:** ![Arvid1](https://community-cdn.aisler.net/letter_avatar_proxy/v4/letter/a/e19b73/32.png) [@Arvid1](https://community.aisler.net/u/Arvid1)\ **Post date:** [September 8, 2026, 3:02pm UTC](https://community.aisler.net/t/connecting-gnd-on-bq27220yzfr-dsbga-ic-0-5-mm-pitch/5794/3 "2026-09-08T15:02:43Z")
Hey, thanks for the reply. Comparing a few manufacturers, I think the most feasible way of routing out the 0.5 mm BGA is with via-in-pad. A via with a 0.2 mm hole, and 0.35 mm diameter. Placing that in the middle of the pad gives 0.2 mm spacing between the copper of the pad and the via. This seems to be, at a slightly higher price, possible by some manufacturers. My testing revealed that routing out would require 0.09 mm / 3 mil tracks with 0.051 mm / 2 mil spacing of the track to the SMD pad (when not making the pad size any smaller; however, the pad size is already at the minimum specified by Ti). When changing the pad size to 0.2 mm (down from 0.25 mm), I can route out with a 0.1 mm track, and 0.1 mm spacing between track & pad. I agree, it would be better to use a different part. I’ll get back to the drawing board, I could probably get away without a BMS IC in the first place. ---
**Author:** ![Sarah-from-AISLER](https://community-cdn.aisler.net/user_avatar/community.aisler.net/sarah-from-aisler/32/2193_2.png) [@Sarah-from-AISLER](https://community.aisler.net/u/Sarah-from-AISLER)\ **Post date:** [September 10, 2026, 2:59pm UTC](https://community.aisler.net/t/connecting-gnd-on-bq27220yzfr-dsbga-ic-0-5-mm-pitch/5794/4 "2026-09-10T14:59:06Z")
Alright, thank you for sharing the information you found @Arvid1 (: I’ll mark this question as answered, if another one comes up during the process, feel free to create a new one. ---
**Author:** ![system](https://community-cdn.aisler.net/user_avatar/community.aisler.net/system/32/28_2.png) [@system](https://community.aisler.net/u/system)\ **Post date:** [September 11, 2026, 2:59am UTC](https://community.aisler.net/t/connecting-gnd-on-bq27220yzfr-dsbga-ic-0-5-mm-pitch/5794/5 "2026-09-11T02:59:57Z")
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