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Bond Wire Properties
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Wire bonding is the primary method of making interconnections between an integrated
circuit (IC) and a printed circuit board (PCB) during semiconductor device fabrication. Although less common, wire
bonding can be used to connect an IC to other electronics or to connect from one PCB to another. Wire bonding is
generally considered the most cost-effective and flexible interconnect technology, and is used to assemble the
vast majority of semiconductor packages. Bond wires usually consist of one of the following materials: Gold -
Aluminum - Copper. Wire diameters start at 15 µm and can be up to several hundred micrometers for high-powered
applications. There are two main classes of wire bonding: Ball bonding Wedge bonding Ball bonding usually is
restricted to gold and copper wire and usually requires heat. Wedge bonding can use either gold or aluminum wire,
with only the gold wire requiring heat. -Wikipedia
These values are typical for standard industry bond wire, and could vary from one product to another.
Here is an article gives equations for calculating, "Bond
Wire Fusing in ICs with Pulsed Current"
| Gold |
1.00 |
0.79 |
1.16 |
0.6-0.7 |
4 x 4 |
| 1.30 |
1.33 |
0.693 |
0.9-1.0 |
5 x 5 |
| 1.50 |
1.77 |
0.521 |
1.2-1.4 |
6 x 6 |
| 2.00 |
3.14 |
0.294 |
1.6-2.0 |
8 x 8 |
| Aluminum |
1.00 |
0.79 |
1.33 |
0.27-0.30 |
3.5 x 3.5 |
| 1.25 |
1.23 |
0.856 |
0.4-0.5 |
4 x 4 |
| 1.50 |
1.77 |
0.595 |
0.6-0.7 |
6 x 6 |
| 2.00 |
3.14 |
0.335 |
1.0-1.2 |
6 x 8 |
| 3.00 |
7.07 |
0.149 |
2-2.5 |
9 x 12 |
| 4.00 |
12.57 |
0.0838 |
3.5-4.0 |
12 x 20 |
| 5.00 |
19.63 |
0.0537 |
5-6 |
15 x 25 |
| 8.00 |
50.27 |
0.0210 |
11-12 |
20 x 32 |
| 10.00 |
78.54 |
0.0134 |
16-18 |
25 x 40 |
| 12.00 |
113.10 |
0.0093 |
21-23 |
30 x 48 |
| 15.00 |
176.71 |
0.0059 |
20-35 |
40 x 60 |
| 20.00 |
314.16 |
0.0033 |
50-60 |
50 x 80 |
99.99% purity @ 20°C
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Kirt
