Mechanical properties of intermetallic compounds at solder joint
Nanoindentation technique is applied as the key tool to investigated mechanical properties of intermetallic compounds, particularly those formed at solder joint interfaces, which are essential for
Solder Joint
Solder, as the material that forms the solder joint, has been used in surface mounted technology, ball grid array package and chip size package etc. in microelectronic packaging industry [4–6]. Therefore,
Ultra-Large FC-BGA Assembly | Warpage-Coupled Failures-UltroNiu
In ultra-large FC-BGA, these interfaces are loaded unevenly due to warpage. Even if bulk solder looks acceptable, the joint can be interfacially compromised from the first reflow.
Mechanical properties of interconnection interfaces in micro tin-silver
Herein, the mechanical properties of different regions in the welding interface of low-silver lead-free micro joints were explored by nanoindentation tests. The results showed that the hardness, modulus
Flip Chip and Underfills
In addition to linking the chip to the substrate, underfill materials also provide mechanical protection to the solder bumps and a considerable improvement in
Effect of Solder Particle Size on the Mechanical and
The interface reaction of the solder joint was analyzed, and the void ratio of the solder layer was detected by X-ray. In order to evaluate the
Reliability behavior of lead-free solder joints in electronic components
The reliability of solder joints of electronics components has been found playing a more important role in service for microelectronics components and micro-electro-mechani-cal systems. So many
Understanding the reliability of solder joints used in advanced
Soldering technology has made tremendous strides in the past half-century. Whether structural or electronic, all solder joints must provide a level of reliability that is required by the
Relationship between Nanomechanical Responses of Interfacial
This study aims to evaluate solder joint reliability under high speed impact tests using nanoindentation properties of intermetallic compounds (IMCs) at the joint interface.
Achieving the Perfect Solder Joint: Techniques for Selective Soldering
Achieving perfect solder joints through selective soldering is a skill that combines preparation, precision, and continuous improvement. By following the best soldering techniques and
High-temperature fatigue life of flip chip lead-free solder joints at
A key challenge of reliable operations of the assembly of the FC package is the decrease in the strength and integrity of its solder joints at high homologous operating temperature.
Advanced Flip Chip Packaging
In general, flip chip interconnection using solder bump has an excellent yield due to the self-alignment characteristic of solder material. However, its high solder volume gives some design limitations and
Microstructures, mechanical properties and reliability induced from
This review summarized the influence of solder joint sizes on the microstructure, with a focus on intermetallic compound (IMC), element diffusion, and undercooling. Moreover, the
Microsoft Word
Those topical areas that are explicit to solder joint reliability include solid-state interface reactions, monotonic strength, and fatigue performance. Of the three topics, monotonic strength is
Comparative study of solder joint reliability assessment on
In the paper, solder joint reliability test is conducted to understand the thermal–mechanical performance between the direct chip-attach (DCA) and fan-out chip scale package (FOCSP). It is
Plugs vs direct solders for FC, PDB, etc.
Hey, newbie here, just wondering, on the question of soldering all motor controllers etc. directly onto my FC and PDB boards. I know a direct solder is always going to be the best, but are
Upgrading Solderjoints to Press-Fit: Why and How?
Deployments of press-fit “eye-of-the-needle” compliant interconnects have shown a consistent pattern of better reliability than similar designs using conventional solderjoint connections.
doi: 10.1007/978-981-15-3920-6_1
It can be seen from the failed sample (after thermal cycling test) that the crack of the solder joints occurs near the interface between the ceramic package and the bulk solder.
Intermetallic Compounds in Solder Alloys: The Common
During soldering, an IMC is formed at the soldered interface as the molten solder reacts with an element in the substrate. IMCs also can form within
CHAPTER 6
1. INTRODUCTION Having examined the mechanical properties of bulk solders, attention is now turned to the behaviour of solder joints, which may be regarded as composite structures, with the solder as
Reliability Analysis of SnPb and SnAgCu Solder Joints in FC-BGA
This paper describes the experimental setup and test results to evaluate the reliability of solder joints in the presence of a preload. 3-D nonlinear finite element analysis is performed to simulate the effect of
Fix Faulty Solder Joints: Types, Causes & Reliable
Learn essential solder joint types, master manual & automated soldering techniques, and fix common defects like cold joints & bridging. Perfect
RHE2-4_Hillman_David
This paper reviews and discusses results from the published literature on the impact of distinct types of solder joint voids in electronic components and their relationship to long term...
Study of electromigration-induced formation of discrete voids in flip
In the microelectronics industry the flip-chip (FC) technology is broadly used to enhance the packaging density. However, the small size and the unique geometry of the FC solder joints