Plasma Cleaning prior to Wire Bonding

Plasma cleaning prior to wire bonding efficiently removes organic contaminants and thin oxide layers under high throughput conditions, quickly, efficiently and reproducibly, greatly enhancing yield and reducing bond failures.

In many electronics application areas there is a stringent requirement for ultra-clean bond pads prior to wire bonding. This is especially true in e.g. semiconductor and space satellite instrumentation fabrication. Wire bond pad contamination results in poor bond pull strength and also bond strength uniformity. Plasma cleaning may be applied as an in-line solution e.g. prior to encapsulation, or as a batch processing step with bespoke frame loading arrangements.

PLASMA CLEANING

• Custom lead frame loading arrangements
• Plasma cleaning with single gases and gas mixtures
• Increased bond pull strength
• Wide range of plasma cleaner chamber sizes

CASE STUDY

Hydrogen Plasma Cleaning to remove contamination

National Physical Laboratory

The National Physical Laboratory (NPL), is the UK's National Measurement Institute and is a world-leading centre of excellence in developing and applying the most accurate measurement standards, science and technology available.