QualiEco Resources
Glossary and Abbreviations - PCB Glossary
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Alphabet H
- HASL – (Hot Air Solder Leveling)A method of coating exposed copper with solder by inserting a panel into a bath of molten solder then passing the panel rapidly past jets of hot air.
- HDI - (High Density Interconnect)Ultra fine-geometry multi-layer PCB constructed with conductive microvia connections. These boards also usually include buried and/or blind vias and are made by sequential lamination.
- HermeticAirtight sealing of an object.
- HeaderThe portion of a connector assembly which is mounted on a printed circuit board.
- Hole BreakoutA condition in which a hole is not completely surrounded by the land.
- Hole DensityThe quantity of holes in a unit area of a printed board.
- Hole patternThe arrangement of all holes in a printed board with respect to a refrence point.
PCB Design Tips
When designing a PCB, try to limit
the amount of draws you use.
Draws use a lot of memory and slows the programming time. Ex.: Use a flash for pads instead of draws. If for some reason we need to increase or decrease that pad size, it can easily be done by changing the D-code but if they are done with draws it could be a nightmare.
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