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news digest ♦ Equipment and Materials


As a bipolar current and voltage source, the LSM 350 offers all functions necessary for testing LEDs fast. The automatic polarity test feature can be used for single and multi-chip LEDs. Dedicated measurement ranges permit particularly precise testing at low forward currents of 1 μA, and measurement of reverse currents in the nA range.


The modular concept includes an option to measure breakdown voltages up to 40 V. Very short settling times reduce the test cycles by up to 40% compared to those of most standard current sources.


The LSM 350 is fully integrated in the LED Tester. The turnkey system with the high- precision array spectrometers in the CAS 140CT or CAS 120 series allows test routines to be set up with fully automated testing and binning of LEDs and for testing LED wafers. The associated software permits a large number of different functions and evaluation options.


complement the company’s current 190,000 square foot facility in Beijing


AXT has agreed with the Administrative Commission of Tianjin Economy and Technology Development Zone to establish a second manufacturing facility in Tianjin, China.


The arrangement provides AXT with land use rights for approximately 32 acres of industrial land located in Yixian Scientific and Industrial Park to construct a compound semiconductor substrate manufacturing facility that would be completed in phases by 2017.


AXT has committed to a $12.5 million investment in the construction of the facility over the next two years in exchange for land use rights, enterprise and individual income tax rebates, employee hiring and development subsidies, and other benefits.


“We are very pleased for the opportunity to begin planning our future expansion in such a vibrant and dynamic area of China and in cooperation with the Administrative Commission of Tianjin Economy and Technology Development Zone,” said Morris Young, chief executive officer.


System solution for LED Tester


AXT to grow with another plant in China


The facility will expand the firm’s gallium arsenide, indium phosphide and germanium substrate manufacturing capacity. It will


214 www.compoundsemiconductor.net January / February 2012


“While our current facility in Beijing continues to provide us with ample capacity to grow our business for the next 18 to 24 months, we believe that a second manufacturing facility in Tianjin will provide us with additional capacity for many years to come, particularly in light of positive trends in the demand for wireless devices, the proliferation of LEDs and the adoption of photovoltaic technology. The positive financial considerations of this arrangement, coupled with what we believe to be our longer-term capacity needs, provide compelling incentives to proceed with our expansion plans at this time. This arrangement allows us to begin planning for growth and redundancy in our business in a measured and incremental way that is suitable both to the current economic conditions and the sizeable opportunity ahead,” he concluded.


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