Technical Library | 2014-06-19 18:13:23.0
For high-density electronic packaging,the application of flip-chip solder joints has been well received in the microelectronics industry. High-lead(Pb) solders such as Sn5Pb95 are presently granted immunity from the RoHS requirements for their use in high-end flip-chip devices, especially in military applications. In flip-chip technology for consumer electronic products, organic substrates have replaced ceramic substrates due to the demand for less weight and low cost. However, the liquidus temperatures of high-Pb solders are over 300°C which would damage organic substrates during reflow because of the low glass transition temperature. To overcome this difficulty, the composite solder approach was developed...
COB board automatic board machine features: 1. For the pcb cutting equipment developed by COB light source board, the microcomputer is used to control the automatic feeding board. 2. Conveniently cut various COB substrates, bulb LED aluminum substr
Technical Library | 2017-06-15 00:44:19.0
Ceramics packages are being used in the electronics industry to operate the devices in harsh environments. In this paper we report a study on acoustic imaging technology for nondestructively inspecting underfill layers connecting organic interposers sandwiched between two ceramics substrates.First, we inspected the samples with transmission mode of scanning acoustic tomography (SAT) system, an inspection routine usually employed in assembly lines because of its simpler interpretation criteria: flawed region blocks the acoustic wave and appears darker. In this multilayer sample, this approach does not offer the crucial information at which layer of underfill has flaws. To resolve this issue, we use C-Mode Scanning in reflection mode to image layer by layer utilizing ultrasound frequencies from 15MHz to 120MHz. Although the sample is thick and contains at least 5 internal material interfaces, we are able to identify defective underfill layer interfaces.
Technical Library | 2014-08-14 17:58:41.0
High reliability applications for high performance computing, military, medical and industrial applications are driving electronics packaging advancements toward increased functionality with decreasing degrees of size, weight and power (SWaP) The substrate technology selected for the electronics package is a key enabling technology towards achieving SWaP. Standard printed circuit boards (PWBs) utilize dielectric materials containing glass cloth, which can limit circuit density and performance, as well as inhibit the ability to achieve reliable assemblies with bare semiconductor die components. Ceramic substrates often used in lieu of PWBs for chip packaging have disadvantages of weight, marginal electrical performance and reliability as compared to organic technologies. Alternative materials including thin, particle-containing organic substrates, liquid crystal polymer (LCP) and microflex enable SWaP, while overcoming the limitations of PWBs and ceramic. This paper will discuss the use of these alternative organic substrate materials to achieve extreme electronics miniaturization with outstanding electrical performance and high reliability. The effect of substrate type on chip-package interaction and resulting reliability will be discussed. Microflex assemblies to achieve extreme miniaturization and atypical form factors driven by implantable and in vivo medical applications are also shown.
Industry Directory | Manufacturer
Toddco3 manufactures automated assembly equipment for the electronics industry that ACF bonds, solders or welds flexible circuits, glass, PCBs or metals.
Used SMT Equipment | Screen Printers
Ekra Type model – X5 Serial-Number – X5 01089 Alignment Repeatability - +12.5 µm@6sigma Printing speed - 9mm/sec to 200mm/sec Printing pressure – 0kg to 26kg Frame size – 736mm*736mm*38mm Pr
Industry News | 2022-05-18 12:37:13.0
Heraeus Electronics today announced that Bastian Schlüter, Global Product Manager Metal Ceramic Substrates, will present during the E-Mobility Forum at PCIM Europe. The presentation entitled, "Al2O3, ZTA, AMB and What's Next?" is scheduled to take place May 11, 2022 at 12:50 p.m.
Industry Directory | Manufacturer
MPCS is a 100% American made PCB supplier. A technology leader in the manufacture of high reliability printed circuit boards. From simple product to high layer count multilayers, flex, rigid-flex, heat sinks and metal cores.
InspectScan VPI is a fully integrated, stand-alone process control, measurement and inspection and programming workstation for use in setting up processes before the production floor in the PCB or Hybrid Microcircuit assembly industries. InspectScan
Used SMT Equipment | Screen Printers
* Sku # 16537 • High Precision Vision SMT Printing performance with an Accuracy of +/- 15 um @ 4 sigma • Printing area up to 18 x 18inches / 460 x 460 mm • Quick Reconfiguration • Applications: Solder Paste, Glue onto P
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