Exhibit 99.1

Diodes Incorporated Updates Second Quarter 2011 Guidance

Dallas, Texas — June 9, 2011 — Diodes Incorporated (Nasdaq: DIOD), a leading global manufacturer and supplier of high-quality application specific standard products within the broad discrete, logic and analog semiconductor markets, today updated its guidance for the second quarter of 2011.

The Company is maintaining its revenue guidance for the second quarter of 2011 as it anticipates revenue to range between $170 million and $178 million, an increase of 5 to 10 percent sequentially. The Company is lowering its gross margin guidance to 32.5 percent plus or minus 1.5 percent, versus its previous guidance of comparable to the first quarter. Gross margin is being impacted by a mix shift due to a softening of demand and the slower than expected recovery from the previously disclosed manpower shortages at the Company’s China packaging facilities. The previous guidance for operating expenses, tax rate and shares used to calculate GAAP EPS remains unchanged.

About Diodes Incorporated

Diodes Incorporated (Nasdaq: DIOD), a Standard and Poor’s SmallCap 600 and Russell 3000 Index company, is a leading global manufacturer and supplier of high-quality application specific standard products within the broad discrete, logic, and analog semiconductor markets. Diodes serves the consumer electronics, computing, communications, industrial, and automotive markets. Diodes’ products include diodes, rectifiers, transistors, MOSFETs, protection devices, functional specific arrays, single gate logic, amplifiers and comparators, Hall-effect and temperature sensors; power management devices, including LED drivers, DC-DC switching and linear voltage regulators, and voltage references along with special function devices, such as USB power switches, load switches, voltage supervisors, and motor controllers. The Company’s corporate headquarters, logistics center, and Americas’ sales office are located in Dallas, Texas. Design, marketing, and engineering centers are located in Dallas; San Jose, California; Taipei, Taiwan; Manchester, England; and Neuhaus, Germany. The Company’s wafer fabrication facilities are located in Kansas City, Missouri and Manchester, with two manufacturing facilities located in Shanghai, China, another in Neuhaus, and a joint venture facility located in Chengdu, China. Additional engineering, sales, warehouse, and logistics offices are located in Taipei; Hong Kong; Manchester; and Munich, Germany; with support offices located throughout the world. For further information, including SEC filings, visit the Company’s website at http://www.diodes.com.

Safe Harbor Statement Under the Private Securities Litigation Reform Act of 1995: Any statements set forth above that are not historical facts are forward-looking statements that involve risks and uncertainties that could cause actual results to differ materially from those in the forward-looking statements. Such statements include statements regarding our expectation that: the Company is maintaining its revenue guidance for the second quarter of 2011 as it anticipates revenue to range between $170 million and $178 million, an increase of 5 to 10 percent sequentially; the Company is lowering its gross margin guidance to 32.5 percent plus or minus 1.5 percent, versus its previous guidance of comparable to the first quarter; gross margin is being impacted by a mix shift due to a softening of demand and the slower than expected recovery from the previously disclosed manpower shortages at the Company’s China packaging facilities; and the previous guidance for operating expenses, tax rate and shares used to calculate GAAP EPS remains unchanged. Potential risks and uncertainties include, but are not limited to, such factors as: we may not be able to maintain our current growth strategy or continue to maintain our current performance, costs and loadings in our manufacturing facilities; risks of domestic and foreign operations, including excessive operation costs, labor shortages and our joint venture prospects; unfavorable currency exchange rates; our future guidance may be incorrect; the global economic weakness may be more severe or last longer than we currently anticipated; and other information detailed from time to time in the Company’s filings with the United States Securities and Exchange Commission.

Recent news releases, annual reports, and SEC filings are available at the Company’s website: http://www.diodes.com. Written requests may be sent directly to the Company, or they may be e-mailed to: diodes-fin@diodes.com.

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Company Contact:	Investor Relations Contact:
Diodes Incorporated	Shelton Group
Laura Mehrl	Leanne K. Sievers
Director of Investor Relations	EVP, Investor Relations
P: 972-385-4492	P: 949-224-3874
E: laura_mehrl@diodes.com	E: lsievers@sheltongroup.com