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Heraeus Stud Bumping Bonding Wires

Heraeus Gold Stud Bumping Wires provide versatility for all types of bumping applications including standard stud, coined, and stacked bumps. Available in either 2N or 4N compositions, it delivers consistent bump height and long-term bond stability.
Stud Bumping Gold Wire Selection Matrix
Attribute 4N (99.99% Au) 2N (99% Au)
Tail Height
Low Low
Tail Consistency Excellent Excellent
Bondability Excellent Good
Shear Strength Level High Higher
Sensitive Pad Applications Excellent Good
Long Term Bond Stability Good Good
Use as Conventional Ball Bonding Wire Yes No
Conductivity (µOhm cm) 2.3
3.2