Wire
Coining's gold wire standards are unsurpassed in the industry. We manufacture gold wire in diameters as small as 0.0005 inch (12.5 microns), with highly uniform elongation, tensile strength and dimensional properties. All of our high purity wire products are produced from highly refined, vacuum-processed metals.
Wire for automatic bonders is a Coining specialty.
Standard Wire Specifications
|
Diameter |
Elongation |
Minimum Break Load (g) |
Minimum Break Load (g) |
Temper Condition |
|
Inches |
Microns |
% |
Type B1 |
Type B2 |
|
|
0.0005 |
12.5 |
0.5 1.5 |
5 |
N/A |
Hard |
|
|
|
2.0 5.0 |
2 |
N/A |
Annealed |
|
0.0007 |
18 |
0.5 2.0 |
9.5 |
8 |
Hard |
|
|
|
1.0 3.0 |
5 |
4 |
Stress Relieved |
|
|
|
3.0 5.0 |
3 |
2.5 |
Annealed |
|
0.0008 |
20 |
0.5 2.0 |
12.5 |
10 |
Hard |
|
|
|
1.0 3.0 |
6 |
5 |
Stress Relieved |
|
|
|
4.0 6.0 |
4 |
3 |
Annealed |
|
0.001 |
25 |
0.5 2.5 |
21 |
20 |
Hard |
|
|
|
1.0 3.0 |
11 |
10 |
Stress Relieved |
|
|
|
4.0 6.0 |
8 |
7 |
Annealed |
|
0.0013 |
33 |
0.5 2.5 |
33 |
30 |
Hard |
|
|
|
1.0 3.0 |
17 |
15 |
Stress Relieved |
|
|
|
5.0 7.0 |
12 |
10 |
Annealed |
|
0.0015 |
38 |
0.8 3.0 |
45 |
40 |
Hard |
|
|
|
1.0 3.0 |
24 |
20 |
Stress Relieved |
|
|
|
6.0 8.0 |
18 |
16 |
Annealed |
|
0.002 |
50 |
1.0 3.0 |
75 |
70 |
Hard |
|
|
|
1.0 3.5 |
45 |
40 |
Stress Relieved |
|
|
|
2.0 8.0 |
30 |
25 |
Annealed |
Note: Other specific requirements can be achieved upon request.
Pure gold wire doped with controlled amounts of beryllium and other elements is normally used for ball bonding. This process brings together the two materials that are to be bonded using heat, pressure and ultrasonic energy. The most common approach in thermosonic bonding is to ball-bond to the chip, then stitch-bond to the substrate. Very tight controls during our processing enhance looping characteristics and eliminate sagging.
Junction size, bond strength and conductivity requirements typically determine the most suitable wire size for a specific wire bonding application. Coining manufactures gold wire in diameters from 0.0005 inch (12.5 microns) and larger. Production tolerance on gold wire diameter is +/-3%.
Ribbon
Ribbons of pure gold and base metals for microwave and other applications are also available from Coining and are custom manufactured to the customer's specifications. As with wire, many of the base metals in ribbon form can be supplied plated or clad with other metals for PC board repair and other applications.
|
Ribbon Type |
Width (Inch) |
Thickness (Inch) |
|
Rolled Narrow |
0.002 0.010 |
0.00025 0.002 |
|
Slit |
0.025 0.100 |
0.0005 0.002 |
|
Rolled Wide |
0.010 0.025 |
0.0005 0.003 |
|
Tolerance |
+/- 3% |
+/- 10% |
Note: Many other wires and ribbons in various alloys are available for customer-specific applications. All materials that Coining produces are analyzed for chemical properties; impurity levels are measured in PPM. Please contact us for additional details. | 
