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Electroplating
■ Plating Standard Spec.
DOWA HIGHTECH CO.,LTD.
Platable Materials
Copper, Brass, Phosphor bronze, Ti-Cu, Be-Cu, etc.
Platable Shapes
Strip, Punching hoop
Aftertreatment
Anti-Corrosion (for Au), Anti-discoloration (for Ag)
Option: Slitting into various width after Wide Size Plating
   
fig01
Plating Metal Plating Type
Overall One side Partial
Stripe Spot Fluid Level
Au      
Ag
(Bright)
   
Sn
(Reflow, Matte, Bright)
 
Ni
(Matte, Bright)
 
Cu
For Underlay
 
◎ Both sides having each different thickness available
   
DOWA METALTECH (THAILAND) CO.,LTD.
Platable Materials
Copper, Brass, Phosphor bronze, etc.
Platable Shape
Strip
Aftertreatment
Anti-Discoloration (for Ag only)
Option: Slitting into various width after Wide Size Plating
   
fig02
Plating Metal Application
Material thickness
(mm)
Material width
(mm)
Overall Partial
Au 0.15–0.8 20–150  
Ag
(Bright)
0.2–1.2 20–150
Sn
(Reflow, Matte, Bright)
0.15–1.2 20–200
Sn
(Reflow)
0.15–1.2 (180)–300  
Ni
(Matte, Bright)
0.15–1.2 20–200
Cu
For Underlay
0.15–1.2 20–200
◎ Both sides having each different thickness available
☆ Spot available
   
■ DOWA Plating Technology
1 Various Types of Plating
 
2 Various Types of Materials
Precious Metals
Au · Ag
Others
Sn , Sn-Reflow , Ni
 

Various Copper Alloys, Strips & Other Punching Hoops

Material Thickness
Ag: 0.1–3.0mm    Au: 0.1–0.8mm
Width
Ag: MAX 250mm    Au: MAX 150mm
3 Cost Reduction through Differential Ag Plating, Wide & High-Speed Ag Plating, Stripe Ag/Sn Plating
Differential Plating → Reduce Amount of Ag
 
Wide & High-Speed Plating→Reduce Processing Costs
fig03   fig04
4 Proposals to Reduce Costs by Plating Type
Spot Plating
When a new design is developed or a process changes, we propose a cost reduction through precious metal plating.
 
Material Spec.
Material Cu-based
Thickness 0.15–0.8mm
Width 20–150mm
Kg (max.) 600kg
Plating Spec.
Metal Thickness (μm)
Ni underlay 0.1–2.5
Au 0.05–1.2
Cu underlay 0.1–1.0
Sn 0.1–3.0
Spot Spec. (mm) 
MIN size 1.0×1.0
MAX size 20.0×20.0
Tolerance ±0.3
fig05  
Stripe Plating Type Spot
Ni (underlay) + Au stripe
Au
≧ 0.05μm
Plating Spec. Ni (underlay) + Au spot
Au ≧ 0.05μm
10 Au amount (rate) 3
 
     
     
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