Gold / Aluminum / Copper Bonding Wires The bonding wires is the most important material used in making electrical connections between the chip and the external circuit. It has good conductivity and corrosion resistance, and it could be used for extr
Please visit our main microsectional analysis page for more information. Process Sciences uses microsection for both failure analysis and process validation. Our cross sections reveal intermetallic layers, defects, and other physical characteristic
Electronics Forum | Fri Feb 11 09:44:01 EST 2005 | pjc
A touched-up solder joint is never as reliable as one soldered correctly by machine. Touching up adds more heat thereby increasing the thickness of the intermetalic bond. Our goal is to have the thinest intermetalic bond in our solder joints. The int
Electronics Forum | Fri Jan 26 11:18:54 EST 2007 | samir
Chunks! Good to see you here. From what I've been taught, and from what I've read, the strength of the solder joint is in the intermetallic bond which occurs at the atomic level. A solder FILLET is an indicator that wetting took place.
Industry News | 2016-10-25 09:47:33.0
Learn about SMT assembly from SME Phil Zarrow in Chicago
Industry News | 2019-11-05 22:19:03.0
> News-Blog > Guideline for wire bonding Guideline for wire bonding Tuesday,Jun 12,2018 There are two wire bonding processes that are used, Thermosonic (T/S) Gold Ball Wire Bonding and Ultrasonic (U/S) Aluminum Wedge Wire Bonding. Approximately 90% of all IC Assembly in Semiconductor Packages is manufactured using Gold Ball Bonding process, while Aluminum Wedge Bonding is used to produce about 10% of other Wire Bonding requirements on Printed Circuit Boards (PCB), Printed Circuit Flex (PCF) and other Packages.
Technical Library | 2013-01-17 15:37:21.0
A problem exists with electroless nickel / immersion gold (ENIG) surface finish on some pads, on some boards, that causes the solder joint to separate from the nickel surface, causing an open. The solder has wet and dissolved the gold. A weak tin to nickel intermetallic bond initially occurs, but the intermetallic bond cracks and separates when put under stress. Since the electroless nickel / immersion gold finish performs satisfactory in most applications, there had to be some area within the current chemistry process window that was satisfactory. The problem has been described as a 'BGA Black Pad Problem' or by HP as an 'Interfacial Fracture of BGA Packages…'[1]. A 24 variable experiment using three different chemistries was conducted during the ITRI (Interconnect Technology Research Institute) ENIG Project, Round 1, to investigate what process parameters of the chemical matrix were potentially satisfactory to use and which process parameters of the chemical matrix need to be avoided. The ITRI ENIG Project has completed Round 1 of testing and is now in the process of Round 2 TV (Test Vehicle) build.
Technical Library | 2017-10-05 17:13:04.0
Intermetallic compounds (IMC) in solder bonds are commonly considered critical for the reliability of interconnections. The microstructure and thermal aging characteristics of solder bonds of crystalline silicon solar cells are investigated, whereby two solders, Sn60Pb40 and a lead-free, low melting point alternative Sn41Bi57Ag2 are considered.
Events Calendar | Wed Mar 18 00:00:00 EDT 2020 - Wed Mar 18 00:00:00 EDT 2020 | College Park, Maryland USA
CALCE Reliability Science Symposium - Spring 2020
SMTnet Express, October 5, 2017, Subscribers: 30,900, Companies: 10,753, Users: 23,894 Intermetallic Compounds In Solar Cell Interconnections Including Lead-Free, Low Melting Point Solders Torsten Geipel, Achim Kraft, Ulrich Eitner - ISE , Monja
SMTnet Express, August 31, 2017, Subscribers: 30,770, Companies: 10,706, Users: 23,739 NSOP Reduction for QFN RFIC Packages Mumtaz Y. Bora; Peregrine Semiconductor Wire bonded packages using conventional copper leadframe have been used in industry
Heller Industries Inc. | https://hellerindustries.com/news/heller-exhibition-at-nepcon-china-2023-a-resounding-success/
. As the NEPCON exhibition concludes, a new chapter unfolds in the enduring bond between HELLER and our customers. We are steadfast in providing industry-leading products and solutions
