PCB Surface finished/treatment

Surface finished/treatment In PCB manufacturing

1---HASL(Hot Air Surface Leveling)

2---HASL LF (HASLLead Free, PB Free Hot Air Leveling)

3---CHEM Ag(Immersion Silver, Immersion Ag)

4---CHEM Tin(Sn)(Immersion tin)

5--- CHEM AU(Immersion gold),ENIG

6---Gold plated (Electrical gold plating)

7--- Electroplated Soft Gold(Soft Ni/Auplating)

8--- Flash Gold

9--- Gold Finger( Hard Gold Finger, ContactFingers, Edge-board contact, Gold plated contacts, Edge connector plated)

10--- OSP (organiccopper passivation /anti copper oxide coating)

11--- Carbon

12--- Peelable mask（Peelable resist, Peelable Solder Mask）

13--- Selective Surface Finish( Selective Gold plated, Selective ENIG)

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