Differences

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--- glossary:glossary_h [2018/04/26 08:06] – [Handshaking] Bob Vetterlein
+++ glossary:glossary_h [2018/04/26 09:20] – [HASL] Bob Vetterlein
@@ Line 20: / Line 20: @@
 ===== HASL =====
-[[https://en.wikipedia.org/wiki/Hot_air_solder_leveling|Hot Air Solder Leveling]]
+[[https://en.wikipedia.org/wiki/Hot_air_solder_leveling|Hot Air Solder Leveling]]\\ HASL = hot air solder levelling - the bare copper of the etched PCB would soon oxidise and refuse to take solder, so a thin layer of "something" is added to make the shelf life longer. The standard HASL provided by Chinese manufacturers is leaded solder. More expensive options are lead free solder, organic solderable varnish stuff, nickel, or gold flash.
 ===== Header plug or socket =====