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A vector network analyzer was used to obtain the S parameters of Pd-doped Ag-alloy wire bonds up to 67 GHz. The alternating-current (AC) resistance was extracted at around 3 GHz, 8 GHz, 16 GHz, and 20 GHz before the resonance; it was found that Ag alloy wire bonds with 3.5 wt.% Pd had the lowest AC resistance, with consistent trends at these frequencies. Because Pd has higher resistance than silver,...
Agilent's Vector Network Analyzer VNA was used to obtain the S-parameters up to 67 GHz. The AC resistance was extracted at 3 GHz and 20 GHz, it was found that Ag alloy wire bonds with 3.5 %wt Pd had the least AC resistance. The trends were consistent at both frequencies. It indicates the Ag alloy wire bonds with 3.5 %wt might have a different Pd distribution from other Ag-alloy wires of other Pd percentages...
In this paper, high frequency characteristics of Ag alloys, for example, Ag-Au-Pd and Ag-Pd, were studied. At 20°C, the electrical resistivity of pure Ag, Au, and Pd is 1.587 µΩ×· cm, 2.214 µΩ×· cm, and 10.54 µΩ×· cm, respectively. Depending on the metallurgical distribution of Pd in the Ag-Au alloy or Ag alloy wire bonds, the high frequency behaviors of the wire bond would vary significantly. For...
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