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OMRON Develops World's First* Connector Using Electroforming Technology, Launches Mass Production
7/29/2011 |
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Kyoto, Japan - OMRON Corporation (TOKYO: 6645, ADR: OMRNY) today announced that the company has launched mass production of a connector using subminiature contacts electroformed through an electroplating process, the first of its kind in the world.* The employment of electroforming technology has led to versatile terminal shapes, microminiature terminal dimensions and superior characteristics, which cannot be achieved with a conventional press process.
* According to OMRON survey, as of July 12, 2011
Development Background
As mobile phones evolve from conventional feature phones to smartphones, increasingly higher functions and slimmer design are incorporated into these devices. This trend has resulted in a growing need for increasingly compact components to be embedded without compromising reliability. To meet this need, OMRON has been promoting the development of smaller products, centering on FPC connectors and board-to-board connectors.
Connector terminals are usually formed by a pressing process, but currently available pressing technology has several drawbacks, making it difficult to satisfy demands from customers for greater miniaturization. The drawbacks include:
•Difficulty in making the width of formed products smaller than the thickness of the original plate to be pressed
•Limited ability to reduce bending radius (R)
•Occurrence of burrs (small raised edges) on fracture surface
OMRON has solved these drawbacks by further upgrading its microfabrication technology and electroformed materials technology. This upgrade enables mass production of a connector using subminiature contacts that were impossible to form through conventional press technology.
Terminal Shape Formation through Electroforming Technology
Electroforming is a metal forming process that forms thin parts through the electroplating process. The parts are produced by plating a layer of metal onto a base form (master). Once the plated layer has been built up to the desired thickness, this newly formed part is stripped off the master substrate. Electroforming enables high-precision production of extremely small, thin and fine parts. OMRON also produces dies using microfabrication technology to meet more exacting needs for shapes and sizes, thus enabling transfer of a pattern with submicron-scale (1/10,000mm) accuracy.
With electroforming, contact material properties can be customized to meet specific needs by making adjustments to the process. OMRON's electroformed materials technology also enables the use of diverse metals as well as production of various electroformed alloys.
Features
1.High-precision formation of versatile shapes
With a pressing process, the bending radius (R) is limited to a level twice that of the plate thickness (R/plate thickness = 2). By contrast, electroforming technology can produce finely curved shapes with a radius as small as 40µm. This makes it possible to create new and extremely complex shapes that were unimaginable using the conventional pressing process.
2.Further miniaturization of components possible
With a press, the width of die-cut parts can generally be made as small as the thickness of the metal plate in use. OMRON proprietary micro-shape formation technology enables die-cutting to a width as small as 1/3 of the metal plate thickness. For example, if a 250µm-thick plate is used, pattern and slit widths can be reduced to 80µm, which is impossible with ordinary pressing. This greatly contributes to further miniaturization of components, for reduced footprint on a PCB.
3.Smoother contact end surface for enhanced reliability
The contact surface is free from failures associated with pressing, such as fractures and burrs, thus leading to enhanced reliability.
4.Newly developed high-strength material for increased contact force
The newly developed electroformed material features higher strength (yield strength of 1,100 MPa minimum) compared to conventional press materials. OMRON's FPC connector using this material has improved contact force by approximately 30% (compared to an OMRON FPC connector using pressed parts). The increased contact force greatly contributes to enhanced reliability of the connection section even with miniaturized parts.
Applications
Smartphones, mobile phones, portable game machines and other compact high-performance mobile devices, inspection tools, and contact probes for inspection systems
Factory in Charge
OMRON Corporation Yasu Plant
Specifications of New Connector
Battery Connector
| Ratings and Specifications | Rated current/voltage | 1.2A DC/5V DC |
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| Contact resistance | 35 mΩ max. (2-pin contact, at 20 mV DC max., 100 mA max.) |
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| Withstanding voltage | 250V AC for 1 min.
(leakage current: 1 mA max.) |
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| Battery insertion/removal tolerance | 3,000 times |
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| Price | Open |
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| Sales Target | 1,000,000 units/month |
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For more details regarding the subminiature contact using electroforming technology, please visit: http://www.omron.com/ecb/products/cn/special/index.html.
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