Power of Attorney for Philip J. Ritter

This filing is an exhibit detailing a Power of Attorney granted by Philip J. Ritter to Brett R. Whitmire. The document, executed on April 1, 2026, authorizes Brett R. Whitmire to act as Philip J. Ritter's attorney in fact. This includes making, executing, and delivering any necessary documents and performing actions on behalf of Mr. Ritter, particularly in relation to filings with the SEC, IRS, and Nasdaq concerning his beneficial ownership of Diodes Incorporated securities. Mr. Whitmire is granted full authority to act in any proper and necessary manner, including the power of substitution or revocation, and all actions taken are ratified.