:: Corporate Member News ::

:: Asymtek’s Jetting Technology Enables Hot Wax Dispensing for Lab-on-a-Chip Applications (full story)

:: Fixtureless Testing Joins the ScanINSPECT Family Flying Probe Tester Now Part of the ScanCAD Solution (full story)

:: Miyachi Unitek’s Benchmark Division Introduces: Weld Checking for Projection Weld Processes (full story)

:: Corporate Fast Links ::

Click below to learn more about this issue's featured corporate members.

ScanCAD International
Chip Supply
Miyachi Unitek

All IMAPS Corporate Members will have the opportunity to place their logo/link in the "Fast Links" section. To have your company logo included in an upcoming "Fast Links," email your logo as a JPEG or GIF to Brian Schieman at bschieman@imaps.org. You should also identify which URL to link your logo to. If you have questions, contact Brian at 202-548-8715. There is no charge for this service, it is offered as part of the corporate membership benefits.

:: More Information ::

:: Only news about IMAPS Corporate Members will be published in this Corporate Bulletin. Please send your electronic press releases to Ann Bell, abell@imaps.org, before the first or fifteenth of every month to be considered for publishing in this bulletin.

:: For advertising opportunities, please contact Ann Bell at abell@imaps.org or 202-548-8717.

:: To have your company logo included in an upcoming "Fast Links," contact Brian Schieman at bschieman@imaps.org or 202-548-8711.

:: For comments and questions about this e-mail newsletter, please contact Brian Schieman at bschieman@imaps.org or 202-548-8715.


 

Asymtek’s Jetting Technology Enables Hot Wax Dispensing for Lab-on-a-Chip Applications

Asymtek, a Nordson company, enables lab-on-a-chip applications with its hot wax jetting technology.  Hot wax is used as a gate or valve, to contain fluids on a chip until the critical time when they are released to interact with other fluids or specimens deposited on a chip for diagnostic testing. A wax gate or valve, when used in place of a mechanical valve, provides a cost-effective solution that is easier to manufacture.

Asymtek’s DispenseJet® DJ-9000 jet precisely dispenses an exact amount of wax onto discrete locations on the chip.  The wax keeps the fluids used in the biological test in place on the chip and contaminant-free. When the chip is heated to a specified temperature, the wax designed for that temperature melts, releasing each specific fluid into the flow path at the point it is needed in the testing process. Hot wax is a phase change material, changing from a solid to a liquid when it is melted, then reverting back to a solid when cooled.  Waxes can be formulated to melt at a specific temperature for the application, and multiple formulations can be used on the same chip.

Asymtek


Jetting is an automated, non-contact process that dispenses fluids quickly, cleanly, accurately and reliably. With jetting, the wax is maintained in the jet at the precise temperature needed for optimal dispensing.  Wax jetting technology can be used for lab-on-a-chip applications in all stages of development and manufacturing including prototyping, preproduction runs for clinical tests or FDA certification, as well as for mass production of lab-on-a-chip test kits.

“Jet dispensing technology creates new possibilities for lab-on-a-chip applications,” said Jim Klocke, senior business development manager of Asymtek.  “Hot wax jetting is perfect for biomedical and laboratory applications because it is highly accurate and meets clean room conditions with no risk of contamination.”

Fluids can be jetted into spaces as tight as 175 micrometers.  Fillet sizes as small as 300 micrometers, dot diameters of 0.20mm, shot volumes of 1.0 nanoliters, and a jet stream size as small as 50 microns can be achieved using Asymtek’s jet.  Fluids with viscosities from 1 to 250,000 centipoise (cps) can be jetted for a variety of medical applications, including medical electronics device assembly.

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Fixtureless Testing Joins the ScanINSPECT Family Flying Probe Tester Now Part of the ScanCAD Solution

There are limited options available to manufacturers and repair centers with legacy products. Often the original schematics, design data and net lists have been misplaced, lost or destroyed. The method of choice for re-engineering these critical PCBs requires the total destruction of a known good board. Even then there are no guarantees that the re-engineered PCB will work. One of the most difficult tasks in the re-engineering process is accurately determining the hidden interconnects between layers. Validating the results of the reconstruction effort is difficult and imprecise, to say the least.

Traditional re-engineering techniques start with scanning the surface layer of the PCB with ScanFAB, a tool designed to generate Gerber data needed to re-build the board. Next, the outer layers are delaminated from the stack. Once again, ScanFAB is used to generate the necessary Gerber data for the newly exposed inner layers. This process continues until Gerber data is created for every layer resulting in a new net-list. All that's missing is to independently confirm the correctness of this new net-list using another board.

Now the ScanINSPECT FPT, a fixture-less flying probe tester, offers a way of reaching the final piece of the re-engineering puzzle.

ScanCAD FPT is a fixture-less flying probe electrical tester for bare boards. PCB's are held vertically in place with variable clamping system. The system can be used as a stand-alone tester or in conjunction with a more traditional Bed-of-Nail fixture. A flying probe system can test pads and vias that cannot be reached with a standard grid type fixture due to mechanical constraints.

ScanCAD FPT is capable of performing electrical continuity tests on bare boards used in prototype runs, as a statistical sampling tool during fabrication, selection of a true 'golden' board, or in small volume product. Completing the re-engineering process with the ScanCAD FPT verifies board interconnects at each de-lamination phase, thereby increasing the opportunities for success future board fabrication.

ScanCAD FPT is available in four configurations designed to handle substrates from 0.8" x 0.8" up to 24.4" x 20" and 0.006" to 0.256" thick. Probes are capable of testing as small as 3mils on 5 mil spacing.

ScanCAD FPT accepts data in Gerber RS274D, RS274X, IPC-D-356A or Probot-HLS formats. When no data is available, ScanFAB can be used to scan the target board or artwork to generate the necessary information to verify the net-list.

ScanINSPECT FPT is one of a series of productivity enhancement tools that ScanCAD International, Inc. offers to the electronics fabrication and assembly industries. For more information about ScanINSPECT FPT or other ScanCAD products, visit our web site at www.scancad.com.

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Miyachi Unitek’s Benchmark Division Introduces: Weld Checking for Projection Weld Processes

The MM-370 Weld Checker monitors and measures two key process parameters, electric current and displacement, during a projection welding process.   In addition, the MM-370 makes real time comparison to process limits and can be integrated to the Benchmark Pulsar projection welder for a complete projection welding system with real time feedback.  If the actual electric current and displacement are within the optimal range, one can be confident of a high yield process.
 
With the capability to overlay multiple waveforms on a single screen the monitor can also be used to understand and optimize as well as monitor the significant welding parameters.  Once a process is established with the MM-370, continued monitoring during production can indicate process drift before defective parts are produced.  The Weld Checker can also aid in root cause analysis of process problems.


Miyachi Unitek

The MM-370 has a wide range of features enabling it to provide valuable process feedback in both stand alone and automation applications.  These features include:

  • Real time measurement of current and displacement
  • 5” color display for precise graphical representation of waveform time and amplitude
  • The limits and I/O can be programmed for each parameter with various output conditions
  • Easy screen menu navigation
  • Built in printer and RS232/485 output
  • Comprehensive machine I/O for automation applications

Miyachi Unitek designs and manufacturers a full range of hermetic sealing systems, industrial gloveboxes and atmospheric enclosures, resistance welding and reflow soldering power supplies, heads, monitors and accessories for both large scale and fine spot applications requiring precision metals joining, and lasers and laser systems for welding and marking.  The Company offers applications and process development support at no charge.  Miyachi Unitek may be found on the internet at www.miyachiunitek.com.

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:: Issue 25 ::
March 1, 2007

National Training Center