Summary of Operations and Significant Accounting Policies (Policies)	3 Months Ended
Mar. 31, 2025
Accounting Policies [Abstract]
Summary of Operations	Summary of Operations Diodes Incorporated, together with its subsidiaries (collectively the “Company,” “we,” or “our” (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, analog, and mixed-signal semiconductor markets. The Company serves the industrial, automotive, computing, consumer, and communications markets. The Company’s diverse product portfolio covers diodes; rectifiers; transistors; MOSFETs; SiC diodes and MOSFETs; protection devices; logic; voltage translators; amplifiers and comparators; sensors; and power management devices such as AC-DC converters, DC-DC switching, photocoupler, linear voltage regulators, voltage references, LED drivers, power switches, and voltage supervisors. We also have timing and connectivity solutions including clock ICs, crystal oscillators, PCIe packet switches, multi-protocol switches, interface products, and signal integrity solutions for high-speed signals. The Company operates from the following locations, with additional support offices throughout the world: • Corporate Headquarters Plano, Texas, United States • Design, Engineering, and Marketing Shanghai, Yangzhou, Shenzhen, and Hong Kong, China Oldham, England Bratislava, Slovakia New Taipei City, Hsinchu, and Tainan, Taiwan Milpitas, California, and Plano, Texas, United States • Wafer Fabrication Shanghai and Wuxi, China Oldham, England Greenock, Scotland Hsinchu, Taiwan South Portland, Maine, United States • Assembly and Test Shanghai, Chengdu, and Wuxi, China Neuhaus am Rennweg, Germany Chongli, Taiwan • Sales, Warehouse, and Logistics Hong Kong, Shanghai, Beijing, Shenzhen, Wuhan, Guangzhou, Qingdao, and Xiamen China Oldham, England Frankfurt and Munich, Germany Milan, Italy Tokyo, Japan Singapore Seongnam-si, South Korea New Taipei City, Taiwan Milpitas, California and Plano, Texas, United States The Company’s manufacturing facilities have achieved certifications in the internationally recognized standards of ISO 9001:2015, ISO 14001:2015, and, for automotive products, IATF 16949:2016 and the Company is also C-TPAT certified. We believe these quality awards reflect the superior quality-control techniques established at the Company and further enhance our credibility as a vendor-of-choice to original equipment manufacturers (“OEMs”) increasingly concerned with quality and consistency. Our market focus is on high-growth, end-user applications in the following areas: • Industrial: embedded systems, precision controls, medical, clean energy, machine to machine, robotics, motor control, and AIoT; • Automotive: connected driving, comfort/style/safety, and electrification/powertrain; • Computing: cloud computing: server, AI server, storage, data centers, and edge AI; • Communications: smart phones, 5G networks, and enterprise networking; and • Consumer: IoT: wearables, home automation, home appliances, smart infrastructure, and charging solutions.
Basis of Presentation	Basis of Presentation The condensed consolidated financial data at December 31, 2024 are derived from audited financial statements included in our Annual Report on Form 10-K for the year ended December 31, 2024 filed with the Securities and Exchange Commission (“SEC”) on February 14, 2025 (“Form 10-K”). The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with United States Generally Accepted Accounting Principles (“GAAP”) for interim financial information and with the instructions to Form 10-Q. They do not include all information and footnotes necessary for a fair presentation of financial position, operating results, and cash flows in conformity with GAAP for complete financial statements. These condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and related notes contained in our Form 10-K. All significant intercompany balances and transactions have been eliminated in consolidation. In the opinion of management, all adjustments (consisting of normal recurring adjustments and accruals) considered necessary for a fair presentation of the operating results for the period presented have been included in the interim period. Operating results for the three months ended March 31, 2025 are not necessarily indicative of the results that may be expected for other interim periods or the year ending December 31, 2025. The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual results could differ from these estimates. As permitted under GAAP, interim accounting for certain expenses, including income taxes, are based on full year forecasts. For interim financial reporting purposes, income taxes are recorded based upon estimated annual effective income tax rates taking into consideration discrete items occurring in a quarter. Dollar amounts and share amounts are presented in thousands, except per share amounts, unless otherwise noted. Certain prior year’s balances may have been reclassified to conform to the current condensed consolidated financial statement presentation.
Recently Issued Accounting Pronouncements	Recently Issued Accounting Pronouncements In November 2024, the Financial Accounting Standards Board issued Accounting Standards Update 2024-03, Income Statement—Reporting Comprehensive Income—Expense Disaggregation Disclosures (Subtopic 220-40). The amendments in this update require that at each interim and annual reporting period an entity disclose: • The amounts of purchases of inventory, employee compensation, depreciation, intangible asset amortization, and depreciation, depletion, and amortization recognized as part of oil and gas-producing activities (or other amounts of depletion expense) included in each relevant expense caption. A relevant expense caption is an expense caption presented on the face of the income statement within continuing operations that contains any of the expense categories listed above; • Companies are also required to include certain amounts that are already required to be disclosed under current generally accepted accounting principles in the same disclosure as the other disaggregation requirements; • Disclose a qualitative description of the amounts remaining in relevant expense captions that are not separately disaggregated quantitatively; and • Disclose the total amount of selling expenses and, in annual reporting periods, an entity’s definition of selling expenses. The amendments in this update are effective for annual reporting periods beginning after December 15, 2026, and interim reporting periods beginning after December 15, 2027. Early adoption is permitted.

Summary of Operations and Significant Accounting Policies (Policies)

3 Months Ended

Mar. 31, 2025

Diodes Incorporated, together with its subsidiaries (collectively the “Company,” “we,” or “our” (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, analog, and mixed-signal semiconductor markets. The Company serves the industrial, automotive, computing, consumer, and communications markets.

The Company’s diverse product portfolio covers diodes; rectifiers; transistors; MOSFETs; SiC diodes and MOSFETs; protection devices; logic; voltage translators; amplifiers and comparators; sensors; and power management devices such as AC-DC converters, DC-DC switching, photocoupler, linear voltage regulators, voltage references, LED drivers, power switches, and voltage supervisors. We also have timing and connectivity solutions including clock ICs, crystal oscillators, PCIe packet switches, multi-protocol switches, interface products, and signal integrity solutions for high-speed signals.

The Company operates from the following locations, with additional support offices throughout the world:

•

Corporate Headquarters
Plano, Texas, United States

•

Design, Engineering, and Marketing
Shanghai, Yangzhou, Shenzhen, and Hong Kong, China
Oldham, England
Bratislava, Slovakia
New Taipei City, Hsinchu, and Tainan, Taiwan
Milpitas, California, and Plano, Texas, United States

•

Wafer Fabrication
Shanghai and Wuxi, China
Oldham, England
Greenock, Scotland
Hsinchu, Taiwan
South Portland, Maine, United States

•

Assembly and Test
Shanghai, Chengdu, and Wuxi, China
Neuhaus am Rennweg, Germany
Chongli, Taiwan

•

Sales, Warehouse, and Logistics
Hong Kong, Shanghai, Beijing, Shenzhen, Wuhan, Guangzhou, Qingdao, and Xiamen China
Oldham, England
Frankfurt and Munich, Germany
Milan, Italy
Tokyo, Japan
Singapore
Seongnam-si, South Korea
New Taipei City, Taiwan
Milpitas, California and Plano, Texas, United States

The Company’s manufacturing facilities have achieved certifications in the internationally recognized standards of ISO 9001:2015, ISO 14001:2015, and, for automotive products, IATF 16949:2016 and the Company is also C-TPAT certified. We believe these quality awards reflect the superior quality-control techniques established at the Company and further enhance our credibility as a vendor-of-choice to original equipment manufacturers (“OEMs”) increasingly concerned with quality and consistency.

Our market focus is on high-growth, end-user applications in the following areas:

•

Industrial: embedded systems, precision controls, medical, clean energy, machine to machine, robotics, motor control, and AIoT;

•

Automotive: connected driving, comfort/style/safety, and electrification/powertrain;

•

Computing: cloud computing: server, AI server, storage, data centers, and edge AI;

•

Communications: smart phones, 5G networks, and enterprise networking; and

•

Consumer: IoT: wearables, home automation, home appliances, smart infrastructure, and charging solutions.

Basis of Presentation

The condensed consolidated financial data at December 31, 2024 are derived from audited financial statements included in our Annual Report on Form 10-K for the year ended December 31, 2024 filed with the Securities and Exchange Commission (“SEC”) on February 14, 2025 (“Form 10-K”). The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with United States Generally Accepted Accounting Principles (“GAAP”) for interim financial information and with the instructions to Form 10-Q. They do not include all information and footnotes necessary for a fair presentation of financial position, operating results, and cash flows in conformity with GAAP for complete financial statements. These condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and related notes contained in our Form 10-K. All significant intercompany balances and transactions have been eliminated in consolidation. In the opinion of management, all adjustments (consisting of normal recurring adjustments and accruals) considered necessary for a fair presentation of the operating results for the period presented have been included in the interim period. Operating results for the three months ended March 31, 2025 are not necessarily indicative of the results that may be expected for other interim periods or the year ending December 31, 2025.

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Actual results could differ from these estimates. As permitted under GAAP, interim accounting for certain expenses, including income taxes, are based on full year forecasts. For interim financial reporting purposes, income taxes are recorded based upon estimated annual effective income tax rates taking into consideration discrete items occurring in a quarter.

Dollar amounts and share amounts are presented in thousands, except per share amounts, unless otherwise noted. Certain prior year’s balances may have been reclassified to conform to the current condensed consolidated financial statement presentation.

Recently Issued Accounting Pronouncements

In November 2024, the Financial Accounting Standards Board issued Accounting Standards Update 2024-03, Income Statement—Reporting Comprehensive Income—Expense Disaggregation Disclosures (Subtopic 220-40). The amendments in this update require that at each interim and annual reporting period an entity disclose:

•

The amounts of purchases of inventory, employee compensation, depreciation, intangible asset amortization, and depreciation, depletion, and amortization recognized as part of oil and gas-producing activities (or other amounts of depletion expense) included in each relevant expense caption. A relevant expense caption is an expense caption presented on the face of the income statement within continuing operations that contains any of the expense categories listed above;

•

Companies are also required to include certain amounts that are already required to be disclosed under current generally accepted accounting principles in the same disclosure as the other disaggregation requirements;

•

Disclose a qualitative description of the amounts remaining in relevant expense captions that are not separately disaggregated quantitatively; and

•

Disclose the total amount of selling expenses and, in annual reporting periods, an entity’s definition of selling expenses.

The amendments in this update are effective for annual reporting periods beginning after December 15, 2026, and interim reporting periods beginning after December 15, 2027. Early adoption is permitted.