TJ Green Associates, LLC
:: Corporate Member News ::

:: Gore Study Shows Flast Cables Reduce Particulation In Cleanroom Environments (full story)

:: MicroScreen Installs New FTP Site (full story)

:: New Hermetic Fiber Optic Bulkhead Feedthru for Souriau 38999 ELIO® Connectors From PAE (full story)

:: New 5W Green Laser Welder Microwelds Conductive Parts (full story)

:: TDK-Lambda Packs 15W into 1 x 1 Inch DC-DC Converter (full story)

AI Technology

:: Corporate Fast Links ::

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

TDK-Lambda Americas
TASK Micro-Electronics Inc.

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 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,, at least 3 days before the first or fifteenth of every month to be considered for publishing in this bulletin.

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

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

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

Gore Study Shows Flast Cables Reduce Particulation In Cleanroom Environments

LANDENBERG, PA -- W. L. Gore & Associates, Inc. (Gore) announces the results of a cable particulation study it contracted with the Fraunhofer Institute for Manufacturing Engineering and Automation IPA in Stuttgart, Germany. This study measured the particulation of four different cable systems for ISO cleanroom certification — two cable chains with GORE™ High Flex Flat Cables, one cable chain with round cables, and one GORE™ Trackless Cable. To identify the source of potential particulation for the two chains with GORE™ Flat Cables, Gore selected two non-metal cable chains to use in the test — a low-vibration cable chain and a conventional chain design with links and pins.

According to Paul Warren, Gore’s Lead Design Engineer, designing cable systems that reduce friction is the key to achieving low particulation from these components. Warren states, “Because of the significance of particulation in cleanroom environments, we wanted to verify the relationship between friction and particulation in various types of cable systems.”

Using criteria set forth in Guideline VDI 2083 and ISO 14644-1, Fraunhofer calculated the amount of particles at three separate measuring points for each cable. The test registered zero particulates for both the GORE™ Trackless Cable and the GORE™ High Flex Flat Cable in the low-vibration chain. The conventional chain with GORE™ High Flex Flat Cables emitted particles at rates of 0.1 to 1.7 particles per cubic foot, depending on the velocity, and the conventional chain with round cables was also affected by velocity, emitting 0.0 to 2.5 particles per cubic foot. Testing identical flat cables in two different cable chains indicated that the particulation was caused by the cable chain and not the cable.

Based on ISO guidelines, Fraunhofer determined the following ISO 14644-1 cleanroom certifications based on the velocity that generated the most particulation:

GORE™ Trackless Cable: Class 1
Low-Vibration Chain with GORE™ High Flex Flat Cables: Class 1
Conventional Chain with GORE™ High Flex Flat Cables: Class 5
Conventional Chain with Round Cables: Class 4

The Fraunhofer study concluded that the GORE™ Flat Cables and GORE™ Trackless Cable produced substantially less particulation. Warren concludes, “The unique construction of GORE™ High Flex Flat Cables and GORE™ Trackless Cables distributes the force placed on the cable jacketing, which means less friction caused by movement. An added advantage of these cables is that they reduce the weight and stress of cable systems by eliminating the need for cable chains, dividers, and shelves, which ultimately improves cable performance and life.”

For more details on this study, visit to review Gore’s white paper “Cable Particulation Study for Cleanroom Environments”.

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MicroScreen Installs New FTP Site

As a further extension of its ITAR Technology Control Plan, MicroScreen has installed a secure FTP server, with file access granted only to authorized customers and MicroScreen ITAR appointed personnel.

To protect the security of this File Transfer Protocol, a new password is generated daily, allowing critical material to be protected from unauthorized access.

Customers needing to transfer data files to MicroScreen can receive the daily password by contacting their MicroScreen assigned ITAR personnel.  This new secure site is beneficial to both government defense and commercial customers. 

MicroScreen is a manufacturer of screens for thick film. solar cell, membrane switch, and other large frame size printing as well as stencils for solder paste printing.

To learn more about MicroScreen products, please visit our  web site:

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New Hermetic Fiber Optic Bulkhead Feedthru for Souriau 38999 ELIO® Connectors From PAE

Ultra Lightweight, Option Now Available for a Variety of Applications

Engineers designing electronic components that must operate reliably in harsh environments can now leverage the increased performance of fiber optic technology, following the release of PA&E’s new hermetic fiber optic bulkhead feedthru for the Souriau ELIO 38999 fiber optic connector line. This new, lightweight interconnect solution allows engineers to take advantage of fiber optics in applications where that technology was once unworkable due to hermetic requirements. And, it delivers truly hermetic performance at a significant (up to 60%) weight savings when compared to stainless steel alternatives.   

This new feedthru is well suited for defense, aerospace or any other applications where weight, electromagnetic interference (EMI) and performance are key considerations. It features an insertion loss ≤ 0.3 dB per interface, a return loss ≤ 20 dB per interface and can be manufactured to support multi-mode 50, 62.5 /125 or 100/140 µm fiber types (PC shaped ferrule). The hermetic feedthru is available in either jam nut or laser weldable configurations. It is compatible with aluminium, titanium and stainless steel and is designed to mate with aluminium or composite ELIO contacts. It has an operating temperature range of -55°C to +125°C and is available in one-- or four-way configurations. The feedthru is also compatible with the Airbus A380 Spec and the ARINC 801 Standard.

Glass is the traditional sealing material for many hermetic interconnect solutions, but in fiber optic applications, a glass sealing process is impractical because the temperatures required to create a glass seal are high enough to destroy optical fiber. This innovative new interconnect solution uses PA&E’s Kryoflex® polycrystalline ceramic-to-metal sealing technology. Seals are created at much lower temperatures so fiber optics remain intact while this new feedthru achieves a leak rate ≤ 1X10-9 cc/sec He at one atmospheric differential pressure. Kryoflex seals provide a direct ceramic-to-metal bond, by means of oxygen-pinned valence bonding. This unchanging chemical and mechanical bond is enhanced by Kryoflex's randomly organized crystalline structure, which allows this unique material to relieve stresses from within itself.

For more information on the new hermetic 38999 ELIO fiber optic feedthru or to learn more about the company’s other interconnect products, EMI filters and integrated electronic packaging capabilities, r visit us at To learn more about the Souriau ELIO connector line, visit
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New 5W Green Laser Welder Microwelds Conductive Parts

Miyachi Unitek is pleased to announce the release of its new LW5AG green laser welder.  The new 5W laser offers increased weld speed (2.5x), penetration (~30%) and integration flexibility (2 energy- or time-share outputs) over the previous 2W model.  It utilizes a 532nm wavelength in the visible (green) spectrum which is better absorbed by highly reflective materials enabling precision micro-welding of gold and copper alloys - applications that cannot be done with a traditional 1064nm YAG laser:

  • Microweld conductive parts
  • Green laser beam in the visible spectrum is better absorbed by highly reflective materials enabling precision microwelding of conductive materials like gold and copper alloys
  • Non-contact welding process
  • Real time power feedback ensures extremely stable pulse-to-pulse energy
  • Single phase power and air cooled; enables quick set-up and integration into current production line
Miyachi Unitek designs and manufactures a full range of resistance welding and reflow soldering power supplies, heads, monitors and accessories for both large scale and fine spot applications requiring precision metals joining, lasers and laser systems for welding and marking, and hermetic sealing systems, gloveboxes and environmental enclosures.  The company offers applications and process development support at no charge.  Company Headquarters is located at 1820 S Myrtle Ave., Monrovia, CA 91016.  Contact Miyachi Unitek at (626) 303-5676 or by email at  Miyachi Unitek may be found on the internet at
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TDK-Lambda Packs 15W into 1 x 1 Inch DC-DC Converter

TDK-Lambda has added two new series to its already successful PX family of DC-DC converters. The fully-isolated PXA and PXB Series have a tiny 1 x 1 inch footprint and are designed for applications ranging from communications to factory automation equipment. They are available in open frame (PXA) and shielded metal case (PXB) versions.
The PXA Series offers single-output models with nominal inputs of 24V and 48VDC in 2:1 and wide 4:1 versions. The PXB Series offers both single and dual-output models with nominal inputs of 12VDC in a 2:1 version and inputs of 24V and 48VDC in 2:1 and wide 4:1 versions.
Available single-output voltages for the PXA and PXB series include 3.3V, 5V, 12V and 15VDC. In addition, the PXB series offers dual-output models that provide +/- 5V, +/- 12V and +/- 15VDC outputs. Efficiency is up to 88%. Remote on/off and output adjustment (trim - single output models) features are standard, plus all models include overvoltage and overcurrent/short circuit protection. Operating temperature range is -40°C to +85°C.
The PXA is available in through-hole or SMD mounting formats and the PXB in a through-hole mounting format. All models are CE-Marked and are certified to UL/CSA/EN60950-1 safety standards as well as meeting the rigorous MIL-STD-810F thermal shock and vibration specifications.

 For more information, please visit the website at:

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View the Corporate Bulletin Archives


:: Issue 76 ::
August 3, 2009

RGL Enterprises LLC

Compex Corp.