Bonding Capillary
40Pages

BONDING CAPILLARY TOWARDS BONDING EXCELLENCE

CONTENTS Company Profile About Dou Yee - Global Capability, Local Focus Our Vision - Bonding Tool Product Excellence. Customer Partnership The Longer Lifespan Capillary Ruby Capillary Capillary Manufacturing Process Quality Assurance/ Inspection System Capillary Features Chamfer Ball Control (CBC) Design Tail Bond Enhancer Special Bondings Stud Gold Ball Bump Capillary Bond Stitch On Ball (BSOB) Bonding Capillary Design Rules Capillary Parameter Selection Guide Capillary Hole Diameter Capillary Chamfer Diameter Capillary Inner Chamfer Angle Capillary Tip Diameter Capillary Tip Finishing...

COMPANY PROFILE ABOUT DOU YEE Over the years, our customers have come to rely on us for products that are superior in quality, complete in range, competitive in pricing and timely in delivery. We have established long-term strategic alliances worldwide, with a global network that spans more than 35 branch offices in 15 countries. With dynamic experienced and dedicated teams in many parts of the world, Dou Yee aims to become world’s top provider of industrial solutions, offering world-class products and services of the highest standards to our valued customers. The ISO9001:2000 and ISO14001...

PRODUCT EXCELLENCE. CUSTOMER PARTNERSHIP PRODUCT INNOVATIONS. EXCELLENCE. BONDING CAPILLARY Our Ceramic Injection Molding technology; in-house material scientists’ feedstock formulations; unique sintering process; proprietary-design secondary processes equipment; and manufacturing know-how; bear testimony to our commitment to ensure our capillaries are of the highest quality in order to be at the forefront of the ever demanding wire bonding challenges. Bonding Capillary CUSTOMER PARTNERSHIP. INNOVATIVE SOLUTIONS. Our commitment to customer partnership is one of the key elements to our...

In most cases, the cycle begins with the wire capillary and a ball formed the process starts with the ball creation but since is formed after the second bond, this will be addressed The capillary is first moved position above the target operator aims the capillary automatic machines do this with a PRS that controls then lowers the capillary. During this stage, the wire (with the drag clamps) and the ball enter the capillary chamfer. Here, the ball's centering actions takes place. The centering action chamfer is usually more effective than with the the creation of the first ball is underway....

the loop, away from the target lead. This kink leaves a smal part of the wire bent directed upwards, without breaking the wire just over wire is bent during this reverse motion, radiused chamfer that provides lower rises to loop height. enough wire feeds While scratched gold build-up. device remains bonding head. More sophisticated capillary trajectories ultrasonic vibration transmitted through bond. At this stage, tail must be long a ball from forming 'neck' area.

THE LONGER LIFESPAN CAPILLARY Along with the semiconductor industry requirement of low machine downtime and high production throughput, Dou Yee capillaries offer maximum touchdowns with reduced tool change needs and achieving bond quality meeting industrial specifications. Other factors such as purity of the material substrates used, plating quality, its levelness and uniformity, bonding temperature, rigidity of the clamping system, will greatly affect capillary tool life. TOUGHENED ALUMINA Density 4.3g/cm3 BONDING CAPILLARY At the initial R&D stage, Dou Yee material scientists have...

THE LONGER LIFESPAN CAPILLARY Graphs demonstrating the efficient energy transfer and robust wire bonding windows of Dou Yee’s Toughened Alumina capillaries. COMPETITOR CAPILLARY 90 1st bond dia. (microns) Ultrasonic energy BONDING CAPILLARY Ultrasonic energy EXTENDING YOUR TOUCHDOWNS - THE LONGER LIFESPAN CAPILLARY After 2.5 million bonds After clean (gold removed) After 2.5 million touchdowns, Dou Yee’s longer lifespan capillary (after clean) is comparable to a brand new capillary - a testimony to the excellent Toughened Alumina material. The Longer Lifespan Capillary

HMX CAPILLARY The new HMX Capillary developed by Dou Yee intend to satisfy the growing need for: (1) copper wire bonding; (2) challenging leadframes such as hard NiPd plated leadframes, QFN packages BONDING CAPILLARY Common problem associated with copper wire bonding and bonding on NiPd plated leadframes and QFN packages are poor bondability on the 2nd bond. Dou Yee has developed the HMX Capillary with the objective to improve the bondability of the stitch bond through better coupling between the capillary and the wire during bonding. Its HMX proprietary process, not only result in rough...

Competitor Capillary (Serious tip wear observed) (Copper Wire Bonding) BONDING CAPILLARY HMX Capillary (1.0m Bonds, After Wash) (Tip still in good condition) (Copper Wire Bonding) • Improved and better mechanical coupling/ clamping “inter-locking grip” F1 between capillary tip and the wire • Reduce displacement between capillary tip and the wire F1 • Maximum effective transfer of ultrasonic energy to the wire (frictional factor increases, creates stronger/ inter-metallic weld) F2 • Increased in contact surface areas between capillary and the wire

RUBY CAPILLARY Super Long Life Capillary With high U.S. energy transfer (>85%); high wear resistance; high bending strength; and low frictional co-efficient, hence low contamination build-up; Dou Yee Ruby capillary delivers super long life bonding. It is also suitable for re-cycling due to its high acid resistance. BONDING CAPILLARY Minimal Contamination Build-Up after 3.5 KK Bonds Bonding Response st 1 Bond Ruby Capillary

BONDING CAPILLARY CAPILLARY MANUFACTURING PROCESS Capillary Manufacturing Process Starting from ultra-fine powders, Dou Yee capillaries are manufactured using state-of-the-art Ceramic Injection Molding technology. Besides allowing miniature and intricate parts like capillaries’ blanks to be produced in high production rates and at low manufacturing costs, Ceramic Injection Molding process offers a high degree of repeatability and reproducibility with tight tolerances. Further operations of polishing, micro-grinding and finishing completes and customizes the capillary to suit each individual...