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Contact Materials & Bonding Wire

Precious Metal Clad Materials

Multi-layer and multi-strip tapes available.
Your choice of width and thickness in long lengths.

Precious metals clad on strips of copper and iron based alloys. Multi-layer and multi-strip tapes of variable widths and thicknesses are produced using Tanaka's own unique continuous bonding process. These materials demonstrate the highest level of performance while utilizing a minimum amount of precious metals. Beryllium copper based tapes and solder clad materials are also available.

Precious Metal Clad Materials

Features

  • Available in a wide range of thicknesses, from 0.5 µm to 50% of total thickness. 
  • High bonding strength allows a high degree of bending. 
  • We supply a long length tapes with a high precision finish.
Total plate thickness (mm)Tolerance (mm)
ThicknessWidth
< 0.1±0.005±0.05
0.1 to < 0.3±0.01±0.1
0.3 to < 0.8±0.02±0.15
0.8 to 1.5±0.03±0.2
Cladding Thickness (mm)Tolerance (mm)
< 0.05±0.01
0.05 to < 0.1±0.015
0.1 to < 0.3±0.02
0.3 to < 0.5±0.03
0.5 to 0.8±0.05
Cross-section of bond part

Manufacturing Range of Cladding Materials

Base material ShapeTotal thickness
(mm)
Total width
(mm)
Cladding width
(mm)
Cladding thickness ratio
(mm)
BSRI,O0.1~1.510~701.5~201/60~2/3
NSR
NSSR
I,O0.05~1.010~701.5~201/60~2/3
PBR
PBSR
I,O0.05~1.010~701.5~201/60~2/3
Cu-Ni20%I0.1~0.810~252.0~101/60~1/3
CuI,O0.1~1.010~501.5~201/60~2/3

1. For shapes,"1" indicates an inlay type and"0" indicates an overlay type.
2. For an overlay type, the total width is equal to the cladding width.
3. Separate arrangements will be required to use Ag-Ni or Ag-Cu alloy.

Width Precision

Cladding thickness t (mm)Tolerances (mm)
W1W2W0
< 0.05±0.25±0.25±0.1
0.05 to < 0.1±0.25±0.25±0.15
0.1 to < 0.3±0.30±0.30±0.2
0.3 to < 0.5±0.30±0.30±0.2
0.5 to 0.8±0.35±0.35±0.2

Electron Beam (EB) Welding Materials

Features

  • Electron beam is used to weld the sides of long length materials.
  • Its high energy density enables more precise wielding than other welding methods.
  • Vacuum processing prevents welded materials from being contaminated, enabling stable welding. 

Combination of materials 

Precious metalsPaste materials
AgPd30
AgPd50
AgPdCu
SP-1
SP-3
C1720
AgPd50
AgPdCu
SP-3
MX215

Applications

Brushes for micro-motors, commutators, including those for fuel injection pump motors, switches, relays, connectors, etc.

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