--- title: Get stable connections in wire bonding description: Check bond pads and electrodes with micro contact angle prior wire bonding to avoid bond lifts and NSOP. --- [![KRÜSS Scientific - Explore the World of Surface Science](https://visit.kruss-scientific.com/hubfs/blue_logo_kruss-01.svg "KRÜSS Scientific - Explore the World of Surface Science")](https://www.kruss-scientific.com/en) - [English](https://visit.kruss-scientific.com/solution-pages/semiconductors-wire-bonding) - [Español](https://visit.kruss-scientific.com/es/soluciones-aplicacion/semiconductores-wire-bonding) - [Français](https://visit.kruss-scientific.com/fr/pages-solutions/obtenez-des-connexions-stables-dans-le-cablage) # **Get Stable Connections in Wire Bonding** **Avoiding bond lifting and NSOP with wetting analysis** [Contact us](https://visit.kruss-scientific.com/solution-pages/semiconductors-wire-bonding#form) ## **Are your bond pads and electrodes ready for wire bonding?** The detachment of ball or wedge connections, i.e. the loosening of a connected wire from a bond pad, is one of the main causes of failures in electronic circuits. This is critical as the defects are often latent and only appear after some time due to environmental or operational stresses. Invisible chemical changes on the surface of bond pads and electrodes – e.g. due to oxidation or organic layers – are mainly responsible for non-stick-on-pad (NSOP) and long-term instability of the connections. #### **Use wettability to check surface readiness** The wetting of a drop of water on a material, measured by the contact angle, is sensitive to changes in the surface and is therefore ideal for detecting invisible films. It has been shown that the water contact angles of silver and copper electrodes decrease by up to 80-90% after cleaning by plasma treatment, demonstrating that the effect is clearly measurable. ### **Picoliter drops and microscope optics do the work** KRÜSS provides contact angle measuring instruments that are specially designed for analyzing tiny surfaces such as bond pads or electrodes. These devices precisely dose drops in the picoliter range and image them with microscope optics and a high-resolution, high-speed camera. Software with a robust evaluation algorithm provides accurate contact angle results for these droplets. These measurements help you improve manufacturing and cleaning processes before wire bonding – increasing long-term reliability and reducing reject rates. [Contact us](https://visit.kruss-scientific.com/solution-pages/semiconductors-wire-bonding#form) ### **The Stood-up Drop in a nutshell** ##### **Ultrafast** Measure and read the result in seconds ##### **User-independent** Parameters and measurement procedure are predefined ##### **Non-destructive** and **hazard-free** Only drops of pure water get onto the sample ##### **Proven** Tested with many polymers and metals, also plasma treated with different parameters ### **Instruments that measure contact angles on tiny surfaces** ![kruss-dsa30m-diagonal-960x600px](https://24965249.fs1.hubspotusercontent-eu1.net/hub/24965249/hubfs/k-slider-960x600px/kruss-dsa30m-diagonal-960x600px.png?height=120&length=120&name=kruss-dsa30m-diagonal-960x600px.png) ### DSA30M Precision wettability analysis of microscopically small surfaces [Drop Shape Analyzer](https://www.kruss-scientific.com/en/products-services/products/dsa30m) ![kruss-dsa30m-flexible-liquid-diagonal-960x600px](https://24965249.fs1.hubspotusercontent-eu1.net/hub/24965249/hubfs/kruss-dsa30m-flexible-liquid-diagonal-960x600px.png?height=120&length=120&name=kruss-dsa30m-flexible-liquid-diagonal-960x600px.png) ### DSA30M Flexible Liquid Micro wetting analysis with almost any liquid [Drop Shape Analyzer](https://www.kruss-scientific.com/en/products-services/products/dsa30m-flexible-liquid) ![kruss-dsa100m-diagonal-960x600px](https://24965249.fs1.hubspotusercontent-eu1.net/hub/24965249/hubfs/k-slider-960x600px/kruss-dsa100m-diagonal-960x600px.png?height=120&length=120&name=kruss-dsa100m-diagonal-960x600px.png) ### DSA100M The premium solution for wettability analysis of microscopically small surfaces [Drop Shape Analyzer](https://www.kruss-scientific.com/en/products-services/products/dsa100m) > I like the quality and reliability of KRÜSS instruments, and the knowledgeable and rapid response from their team is always appreciated. Christopher Gerlach Lead Research Specialist, 3M ### **Let us help you create stable bonds** Want to learn more? Just fill out and send the form to get in touch! Our surface analysis experts will tell you everything about our methods for wetting analysis with micro drops and how to use them to improve wire bonding. #### **More information from KRÜSS** Discover a wealth of information about surface science and our products and services. **▶ [Visit our website!](https://www.kruss-scientific.com/en)** ##### SERVICES - [Measurement Services](https://www.kruss-scientific.com/en/products-services/measurement-services) - [Technical Services](https://www.kruss-scientific.com/en/products-services/technical-services) - [Webinars & Seminars](https://www.kruss-scientific.com/en/know-how/webinars-and-seminars) - [Remote Support](https://www.kruss-scientific.com/en/remote-support) - [Contact us](https://www.kruss-scientific.com/en/contact) ##### COMPANY - [About us](https://www.kruss-scientific.com/en/company/about-us) - [Job Opportunities](https://www.kruss-scientific.com/en/company/job-opportunities) - [News](https://www.kruss-scientific.com/en/company/news) - [Events](https://www.kruss-scientific.com/en/company/events) ##### GENERAL INFORMATION - [Imprint](https://www.kruss-scientific.com/en/imprint) - [Data Privacy Statement](https://www.kruss-scientific.com/en/data-privacy-statement) - [Cookie policy](https://www.kruss-scientific.com/en/cookie-policy) - [Terms & Conditions](https://www.kruss-scientific.com/en/terms-and-conditions) ##### JOIN THE KRÜSS COMMUNITY