Differences

This shows you the differences between two versions of the page.

--- wirebonding [2026/02/18 07:54] – ethanminot
+++ wirebonding [2026/02/18 08:14] (current) – gus
@@ Line 4: / Line 4: @@
 The wirebonder manual:{{7476E Manual.pdf}}
+As of January 2026, West Bond is no longer operating. Matt Ritchie (who did a service visit Dec '25) started a company and is doing service work on the tools: [[https://www.norcaltechsales.com/|NorCal Technical Sales]].
+====== Introduction to Wirebonding ======
+This video give a good introduction:
+https://www.youtube.com/watch?v=mvZ1dJuvenw
 ====== Wedge bonding Theory ======
@@ Line 9: / Line 17: @@
 Wedge bonding relies on the application of ultrasonic power and force to bond the wire (bonding wire) to a metal pad (bonding pad). The careful application of both force and ultrasonic power deform the wire and diffuse the wire metal into the pad without weakening the wire too much. The strength of the wire after bonding is shown below as a function of deformation from ultrasonic energy and force applied.
-{{wirebonding_optimization.png|500}}
+{{wirebonding_optimization.png?700}}
 Outside the optimal range,
 Foot lift: the bond pulls off the pad, meaning the metals didn't have intimate contact.
-{{wirebonding_foot_lift.png}}
+{{wirebonding_foot_lift.png?400}}
 Weak bond: the wire was deformed too much by the bond tool.
-{{wirebonding_weak_bond.png}}
+{{wirebonding_weak_bond.png?400}}
 The surface quality is also important. While the deformation needs to be managed, clean and properly adhered bond pads are important to successful bonding.
@@ Line 59: / Line 68: @@
-The wire should be deformed aout 150% of the original width. See below:
+The wire should be deformed about 150% of the original width. See below:
-{{wirebonding_deformation.jpg}}
-((maybe I need a new diagram that doesn't cut the BL2))
+{{wirebonding_deformation.jpg?400}}
 To tune this, do the following: