# PCB terminology matching game

**URL:** <https://sierraconnect.protoexpress.com/t/pcb-terminology-matching-game/4396>\
**Category:** Friendly Banter\
**Created:** [August 21, 2026, 1:21pm UTC](https://sierraconnect.protoexpress.com/t/pcb-terminology-matching-game/4396 "2026-08-21T13:21:42Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![rahuls](https://sea2.discourse-cdn.com/sierraconnect/user_avatar/sierraconnect.protoexpress.com/rahuls/32/9_2.png) [@rahuls](https://sierraconnect.protoexpress.com/u/rahuls)\
**Post date:** [August 21, 2026, 1:21pm UTC](https://sierraconnect.protoexpress.com/t/pcb-terminology-matching-game/4396/1 "2026-08-21T13:21:42Z")

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**Match each PCB term with its definition.**

**Terms**

- A. Annular ring
- B. Teardrop
- C. Via stub
- D. Solder mask dam
- E. Thermal relief

**Definitions**

1. Extra copper added where a trace meets a pad to improve reliability.
2. Copper remaining around a drilled hole.
3. Small strip of solder mask separating adjacent pads.
4. Unused plated hole length that can affect signal integrity.
5. Copper spokes connecting pads to a plane for easier soldering.