Kennisbank
PCB Surface Finishes
Surface Finish Selection Chart
- Properties
OSP
OSP
Organic Surface Protection (ENTEK)
HAL
HAL
Hot Air Levelling, Pb Free (Optional non PB Free HAL), not preferred for fine pitch due to thickness variation
Immersion Ni/Au
Immersion Ni/Au
Immersion Nickel Gold, ENIG
- Immersion Ag
- Immersion Sn
Immersion Ni/Pd/Au
Immersion Ni Pd/Au
Immersion Nickel Palladium Gold, ENEPIG
- Thick gold
Production
- Process Effort
- Low
- Medium
- Medium
- Medium
- Medium
- Medium
- High
- Planarity
- Yes
- No
- Yes
- Yes
- Yes
- Yes
- Yes
- Thickness indication
- 0,2μm
- 3-25μm
- Ni 3–5μm Au 0,05μm
- Ag 0,125 – 0,65μm
- 1μm
- Ni 3–5μm Pd 0,2-0,5μm Au 0,05μm
- Au 0,7–0,9μm
Application
- Rigid
- Yes
- Yes
- Yes
- Yes
- Yes
- Yes
- Yes
- Flex
- Yes
- Yes
Restricted
RESTRICTED
Stiffener to be used to avoid excessive stress on the surface finish due to bending
- Yes
- Yes
Restricted
RESTRICTED
Stiffener to be used to avoid excessive stress on the surface finish due to bending
Restricted
RESTRICTED
Stiffener to be used to avoid excessive stress on the surface finish due to bending
- Flex-Rigid
- Not preferred
- Yes
- Yes
- Yes
- Yes
- Yes
- Yes
- Wire Bonding
- No
- No
- Yes
- No
- No
- Yes
- Yes
- Press fit
- Yes
- Yes
Restricted
RESTRICTED
Only in combination with suitable connector, check connector documentation
- Yes
- Yes
Restricted
RESTRICTED
Only in combination with suitable connector, check connector documentation
Restricted
RESTRICTED
Only in combination with suitable connector, check connector documentation
- Fine pitch
- Yes
- Not preferred
- Yes
- Yes
- Yes
- Yes
- Yes
- HDI - BGA
- Yes
- Not preferred
- Yes
- Yes
- Yes
- Yes
- Yes
- Multiple Solderability
- Restricted
- Yes
- Yes
- Yes
- Yes
- Yes
- Yes
- Cost
- Low
- Low
- Moderate
- Low
- Low
- High
- High
Shelf life
Shelf life
Storage under the following conditions assumed: Original sealed packaging; Temperature 20-24°C, Relative Humidity 30-40%
- 3 months
- 12 months
- 12 months
- 6 months
- 6 months
- 12 months
- 12 months
- Refresh of surface
- Yes
- Yes
- No
- No
- Yes
- No
- No
- Handling assembly
- Gloves preferred
- Gloves preferred
