Investor Relations Diodes Incorporated (DIOD) Plano, TX, USA May 9, 2023 Exhibit 99.3

Safe Harbor Statement 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 containing forward-looking words such as “expect,” “anticipate,” “aim,” “estimate,” and variations thereof, including without limitation statements, whether direct or implied, regarding expectations of that for the second quarter of 2023, we expect revenue to be approximately $467 million plus or minus 3 percent; we expect GAAP gross margin to be 41.8 percent, plus or minus 1 percent; non-GAAP operating expenses, which are GAAP operating expenses adjusted for amortization of acquisition-related intangible assets, are expected to be approximately 22.0 percent of revenue, plus or minus 1 percent; we expect non-GAAP net interest expense to be approximately $1.0 million; we expect our income tax rate to be 20.0 percent, plus or minus 3 percent; shares used to calculate diluted EPS for the second quarter are anticipated to be approximately 46.5 million. Potential risks and uncertainties include, but are not limited to, such factors as: the risk that the COVID-19 pandemic may continue and have a material adverse effect on customer demand and staffing of our production, sales and administration facilities; the risk that such expectations may not be met; the risk that the expected benefits of acquisitions may not be realized or that integration of acquired businesses may not continue as rapidly as we anticipate; the risk that the cost, expense, and diversion of management attention associated with the LSC acquisition may be greater than we currently expect; the risk that 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; the risk that we may not be able to increase our automotive, industrial, or other revenue and market share; risks of domestic and foreign operations, including excessive operating costs, labor shortages, higher tax rates, and our joint venture prospects; the risks of cyclical downturns in the semiconductor industry and of changes in end-market demand or product mix that may affect gross margin or render inventory obsolete; the risk of unfavorable currency exchange rates; the risk that our future outlook or guidance may be incorrect; the risks of global economic weakness or instability in global financial markets; the risks of trade restrictions, tariffs, or embargoes; the risk that the coronavirus outbreak or other similar epidemics may harm our domestic or international business operations to a greater extent than we currently anticipate; the risk of breaches of our information technology systems; and other information, including the “Risk Factors” detailed from time to time in Diodes’ filings with the United States Securities and Exchange Commission. This presentation also contains non-GAAP measures. See the Company’s press release on May 9, 2023 titled, “Diodes Incorporated Reports First Quarter Fiscal 2023 Financial Results” for detailed information related to the Company’s non-GAAP measures and a reconciliation of GAAP net income to non-GAAP net income.

Management Representative Dr. Keh-Shew Lu Chairman, President and CEO Experience: President & CEO, Diodes Incorporated Since 2005 Texas Instruments 27 years Senior Vice President of TI Worldwide Analog and Logic President of Texas Instruments – Asia Education: Honorary Doctorate in Engineering National Cheng Kung University Doctorate and Master's Degree in Electrical Engineering Texas Tech University Bachelor's Degree in EngineeringNational Cheng Kung University – Taiwan

Company Representative Experience: Head of Corporate Marketing, Diodes Incorporated, Milpitas, CA Head of Corporate Marketing, Pericom, Milpitas, CA Vice President, Marketing, CA Technologies (Broadcom), Redwood City, CA Director, Global Marketing Strategy, EMC, Pleasanton, CA Director, Marketing, Zarlink Semiconductor (Microchip), San Jose, CA Marketing Management positions at Cisco and National Semiconductor, CA Education: MBA, Marketing/Entrepreneurship, Saint Mary's College of California BS in Electrical and Computer Engineering, UC Santa Barbara Gurmeet Dhaliwal Company spokespersonDirector, Investor Relations

About Diodes Incorporated Vision: Profitability Growth to Maximize Shareholder Value Our Core Values: Integrity, Commitment, Innovation Diodes delivers high-quality (discrete, analog, and mixed signal) semiconductor products to the world’s leading companies in the automotive, industrial, computing, consumer electronics, and communications markets

Company Overview NASDAQ: DIOD; Founded in 1959 Headquartered in Plano, TX; 32 locations globally Manufacturing in US, UK, Germany, China, and Taiwan ISO 9001:2015 Certified / IATF 16949:2016 Certified ISO 14001:2015 Certified Key acquisitions: onsemi SPFAB – June 2022 Lite-On Semiconductor – Nov. 2020 TI Greenock fab (GFAB) - April 2019 Pericom Semiconductor – Nov. 2015 BCD Semiconductor - March 2013 Power Analog Microelectronics (PAM) - Oct. 2012 Zetex - June 2008 Advanced Power Devices - Nov. 2006 Anachip Corporation Taiwan - Jan. 2006 31 consecutive years of profitability Global Operations and World-class Manufacturing & Packaging

Global Organization Wuxi, China Jinan,China Shanghai,China Jhongli,Taiwan Hsinchu,Taiwan Keelung,Taiwan Taipei,Taiwan Munich,Germany Neuhaus,Germany Plano, Texas Milpitas,California Greenock, UK Chengdu,China LogisticsHub andWarehouses Oldham,UK Key: Headquarters Wafer Fab Assembly/Test Design/Sales/Marketing South, Portland,Maine

Our Sustainability Commitment We view sustainability as a competitive advantage and have adopted a sustainability-oriented approach to assess and address related risks that may influence our operational activities, business results, and financial performance. Please refer to Governance and Oversight for additional details  Key focus areas regularly reviewed by our Board of Directors Instituted a cross-functional Sustainability Steering Team to address the sustainability related risks and opportunities  The Sustainability Steering Team provides periodic updates to the Board of Directors

Expanding Profitability Growth Track record of Continued Outperformance Annual Revenue CAGR: 14% (2005 - 2022) Gross Profit CAGR: 15% (2005 - 2022) ($ in millions) ($ in millions)

On-Track to Achieve Longer Term Corporate Objectives Goal 1: $1B Market Cap Goal 2: $1B Annual Revenue Goal 3: $1B Gross Profit Goal 4: $1B Profit Before Tax $1B Market Cap $1B Revenue $1B Gross Profit $1B PBT - 2010 - 2017 2025 Target:$1B Gross profit Gross Margin: 40%Revenue: $2.5B by 2025

Targeted Market Segment Distribution Goal Automotive Connected driving, comfort/style/safety, electrification/powertrain Industrial Embedded systems and precision controls, and IIoT Consumer IoT: wearables, home automation, smart infrastructure Communications Smart phones, 5G networks, advanced protocols, and charging solutions Computing Cloud computing: server, storage, data centers ~60% of revenue ~40% of revenue (53% for Q1 2023) (47% for Q1 2023)

Key Growth Areas Automotive and Industrial are Driving Growth Automotive – 31% CAGR (2013 – 2022) Focused on connected driving, comfort, style, safety, and electrification Released 68 new automotive-compliant products in 1Q’23 Increased dollar content per car to $140 Industrial – 15% CAGR (2013 – 2022) Focused on embedded systems, networked systems, automation, motor controls, sensors, power management, and IIoT Released 20 new SiC diodes and MOSFET in 1Q’23 Expanding content in security, medical, green energy generation and transmission systems

Example: Industrial, Embedded Applications Total Solutions Provider VcoreDCDCController MOSFET LVDS Switch DDRPort Supply and Power ManagementI/O I2C LocalBus ClockInputs VideoPort USB 3.0Port JTAG EthernetPorts PCIe 2.0/3.0Ports SATA/SASPort FPGAASICSoCMCUCPU DDR Regulator DC DC Controller DDR3/4or SSD USB Sleep& Charge USB PowerSwitch USB 3.x/4.0Switch USB 3.x/4.0ReDriver HDMI/DP Switch HDMI/DP ReDriver/ReTimer TVS TVS PCIePacket Switch PCIe-USBBridge 10GbE ReDriver 10GbSwitch 10Gb 1Gb PCIe 1.0/2.0/3.0/4.0/5.0Signal Switch SATA / SAS 2.0/3.0 ReDriver SATA / SAS 2.0/3.0 Switch HV DC-DC I2C to UART High-CurrentLDO HV DC-DC 8-Bit UART PowerManagement DDR3/4or SSD ADC/DAC Crystals Clock Generator PCI Bus to Legacy End Point PCIe-UARTBridge PCIe-PCIBridge PCIe 1.0/2.0/3.0/4.0/5.0ReDriver PCIe 1.0/2.0/3.0/4.0/5.0 End Point DDR 3/4Switch DDR 3/4or SSD Analog Switch JTAG VLT/ULS Supply 10GbPHY SFP+Optical LAN Switch Port 1 Port 2 USB-C Switch/ReDriver Real TimeClock I2C Mux Oscillators Crystals I2C Buffer ClockBuffer

Automotive Applications Driving Growth Connected Driving ADAS (Advanced Driver Assistance Systems) Telematics Infotainment Systems Smart cockpit, Wireless charger Comfort, Style, and Safety Lighting Migration to LED and intelligent illumination BLDC motor / fan control Migration from Brushed to Brushless DC Motors Electrification/Powertrain Conventional Powertrain  Hybrid  Electrification Power Module Inverter for EV motor Battery management Move to 48V battery Focus Applications: 2013 - 2022CAGR: 31% Automotive Revenue Growth Year

Automotive Opportunity Automotive Potential Revenue $ / Car Automotive Motor Control $45.50 Connected Driving (Infotainment, Telematics & ADAS) $60.50 Powertrain, Electrification & Body Control Electronics $19.70 Lighting – Moving to LED $14.30 Total $140.00 Normalized to 2013

Automotive Compliant USB Charging USB charging is a high growth application with approximately 2 to 8 ports per vehicle Diodes provides a system solution for USB charging including Port Controller, USB Muxes, Signal Switches, ReDrivers, Xtals, Power Management, and Protection. Automotive Compliant* product portfolio expansion is expanding the SAM further Diodes’ Key Products $ / per car Power Management $5.30 MOS/BJT $1.00 Diodes and Rectifiers $0.50 Timing and Connectivity $2.80 Total $9.60 * AEC qualified, manufactured in IATF 16949 certified sites supporting PPAP documents (if applicable). USB 2.0 Mux

Automotive Surround-View SuperCAM Platform Advanced Clock Gen, Clock Buffer, Crystal Oscillator, USB Power Switch, and Protection solutions for mission-critical need Automotive Compliant* Products Diodes’ Key Products $ / Box Analog >$1.20 Power Management >$0.70 MOS/BJT >$3.50 Diodes and Rectifiers >$5.00 Timing and Connectivity $14.00 Total $24.40 * AEC qualified, manufactured in IATF 16949 certified sites supporting PPAP documents (if applicable).

Industrial Content Expansion Increasing IC content in embedded systems Switching and signal path for networked systems and automation Signal conditioning and timing for precision controls Industrial / motor controls, sensors, and power management for smart meters Green power, Energy storage 2013 - 2022 CAGR: 15% Industrial Revenue Growth Net Sales Year

IoT – Machine to Machine (M2M) Growth Opportunities: Power, Sensor, DC-DC Gate Driver, BJT, MOSFET XTAL and clock Packet switch, ReDriver, IO Expander, MIPI, and USB charging M2M – Dominated by short range technology 73% are short range, mostly Wi-Fi 2030: connections @ 29,400 million M2M – By Application IoT and M2M Modems POS, Routers, Edge Server On-Premise Edge Gateway AGV (Automated Guided Vehicle) AMR (Autonomous Mobile Robots) UAV (Unmanned Aerial Vehicle) POS Display PortSwitch I2C Level Shifterw/Buffer USBSwitch USB PowerSwitch USB 3.0ReDriver USB 3.0Switch PCI Switch/ReDriver SATA Switch/ReDriver VoltageDetector Xtal USB Port USB 3.0Controller HighBandwidthMux ReDriver AC-DC Adapter GPIO Expander TemperatureSensor DVI Scaler Mobile DDR/NOR Flash NAND Flash USB 3.0 PCIe/SATA DP I2C Bus UART USB 2.0 CPU STDLIN DC-DC / LDO AC-DC Diodes’ Key Products $ / AGV Discrete $3.50 Analog & Power Mgmt. $2.20 Timing and Connectivity $18.00 Total $23.70 PMU DDR WiFiModule Gate Driver and MOS LiDAR /Gyro Sensor PCIe Packet Switch CameraSensor CANTransceiver Embedded Processor SSD M Isolated DCDC 48V Battery LDO, DCDC, Hall sensor, Audio Amp IO Expander AGV

Cloud Computing Accelerating Enterprise Market ReDriver support for PCIe or USB connectivity Wide range of signal protocols: PCIe, CXL, SAS, SATA, USB MUX products for high capacity solid state storage Crystal oscillators for increasing clocking speeds LDOs, DCDC, SBR, and TVS for power management and protection

Server Platform Solution Almost all of Server vendors are Diodes’ existing customers Diodes’ products are well positioned in this segment Connectivity, Signal Integrity, Timing, Standard Linear, Power Management, Power Switch, Level shifter, Protection or HV MOSFET / SBR devices AC-DC MOSFET / SBR Power Adapter BLADE SERVER PLATFORM Dual/Quad Core CPU’s HDD SAS 2.0/SATA 3.0 PCIe 3.0/4.0/5.0 PCIe SSD USB 3.0 ReDriver I2C L/S & I3C Mux SERVER PLATFORM HDD RAID Card Expander Card MEZZ Card XTAL PCIe Clock InfiniBand Card 10G ReDriver XO 4 x 10G 1 x 1G Middle Plane HDD Plane Reset IC System Clock XO 100G QSFP 10G ReDriver SATA 3.0 USB 2.0 S & C 2546 To Back-plane I2C Buffer BMC Front Rear PCIe slot M.2 SATA/PCIe BusSwitch I2C MUX IO Expander PCIe 4.0/5.0 Clock Buffer GTL L/S PCIe NVME PCIe SSD XO 10G ReDriver SAS 3.0 ReDriver Front SAS 3.0 ReDriver PCIe ClockBuffer VGA Switch MOSFET Vcore DCDC Controller SBR Clock Buffer BMC LAN Card XO TVS TVS TVS TVS PCIe 3.0/4.0/5.0 ReDriver Combo ReDriver SATA 3.0 Signal Switch SAS 2.0/SATA 3.0ReDriver Dual/Quad Core CPU’s CPU XO Chipset DCDC / LDO Power Management Diodes’ Key Products $ / Server Analog 3.80 Discrete 3.60 Timing and Connectivity 33.00 Total $40.40 WW server market is expected to grow during 2023 – 2027 with CAGR of 7.7% Computing Platform: Server/Storage Solution DDR 4/5

Consumer: IoT Driving Power & Connectivity Requirements Diodes’ Key Products $ / Box Analog >$0.20 Power Management >$1.30 MOS/BJT >$10.00 Diodes and Rectifiers >$5.00 Timing and Connectivity $3.50 Total $20.00 Enterprise Smart Infrastructure Wearables Consumer & Home Asset Tracking Security & Surveillance Retail

Sensor IoT Segment: Smart Home Smart Home Safety and Security Climate Control Consumer Electronics Lighting control Host Controller X1 PCIe2 100MHz HCSL Clk SSD X1 PCIe2 (or SATA controller) 25MHz Xtal PCIe CG PI6C557-05 PCIe Packet SW PI7C9X2G304SL Wireless Controller Wireless Controller Smart Home Gateway Smart Lighting MHz Xtal kHz Xtal AC Power LED Driver AC-DC Light User Interface Smart Speaker MHz Xtal SoC Growth Opportunities Power LED driver Xtal and clock Packet switch SoC MHzXtal MOSFET TVS NAND SDRAM Wi-Fi LED Drive Audio Amp Digital Assistant Diodes’ Key Products $ / Box Analog $0.55 ~ $0.80 Power Management $1.80 MOS/BJT $1.10 Diodes and Rectifiers $0.50 Timing and Connectivity $3.50 Total $7.70 AC-DC Audio Amp Wi-Fi Memory Ethernetport AC Power SoC DC-DC / LDO DC-DC / LDO Op Amp

Communications - 5G Applications Expanding Growth Opportunities Focus Applications: Cloud Computing AI / Data Center Server Gateway Internet Gateway Fiber network Core Network, Cell Stations Small Cells Base Station Edge Computing Server Smart antenna Fiber network End Products Portables: Smartphone, Tablet Smart Car Consumer: VR/AR, Drone, IoT Telecom: 5G CPEs Embedded/Industrial

5G Macro Cell Platform Advanced Solution in Signal Integrity, Signal/Bus/Power Switches and IO Expanders for diversified networking applications Global Logistics provide cost-competitive solution with industry standard pin-outs and flexible package options Diodes' Key Products $ / Box Analog >$0.60 Power Management $0.90 MOS/BJT >$0.50 Timing and Connectivity $11.00 Total $13.00 Xtal 25MHz KX6000G IO Expander IO Expander LV Translator I2C MUX 8-ch x2 I2C SFP Module I2C / GPIO eUSB to USB Repeater x2 eUSB Type A USB2.0 Power Switch 1.5A 1-ch VBUS GPIO SMA Low Power 3.3V 4-output Clock Gen 100MHz HCSL x 4 eMMC eMMC 4x4 RU 25GbE 25GbE mmWAVE / Sub-6GHz BasebandProcessor 4x4 RU 4x4 RU 4x4 RU Server MB 5V to 3.3V, 1.2V, 1.15V for Processor : Sync Buck Converter, 5V 4~8A (under development) Power In to 1.1V, 3.3V, 5V system : Sync Buck Converter, 24V 10~12A (under development) USB-to-UART LDO: Low Dropout Regulator, 5V 150mA, Adjustable 3.3V to 1.0V, 2.0V for PHY : Low Dropout Regulator, 5V 1A, Adjustable 4-ch Low Cj TVS Diode Array Single-buffer Gate (open-drain) Single 2-input Positive AND Gate (push-pull) Single Schmitt-Trigger Buffer (push-pull) MOSFET : Complementary MOS pair, 20V PowerMgmt.Solutions Networking Processor 8bit Bus Switch1.8~3.3V, x2 PCIe 5.0 X8 PCIe 5.0 8ch ReDriver AIC PCIe 5.0 X8 PCIe 5.0 8ch ReDriver AIC XO SMD 3225 – 12MHz, 25Mhz, 49.152 MHz XO SMD 3225 (1.2V Low Jitter)- 24MHz Clock Options Summary Logic IC Summary 1-bit Translator1.8V to 3.3V, x2

Complete Platform Solutions: Notebooks DCDCConverter CPU PCH MOSFET LED Driver USB 2.0Switch A/V Codec DDRRegulator LDO Analog Switch TVS USB 3.0ReDriver CrossbarSwitch Vcore DCDC Controller Sleep / Charge Detect VideoSwitch MCU USB3 /DP Switch LSP Con LCDPanel TVS DP-to-VGAConverter VideoSwitch TVS HDMIReDriver SATA / PCIeReDriver HDD / SSD USB2 / 3Switch USBPower Switch TVS Docking Sub-system DDR4 DIMM 3DCamera LDO USB3ReDriver UART D+, D- Memory Bus DP0..3 Tx, Rx I2C D+, D- D+, D- AUXHPD+AUXHPD- SATA / PCIe DDI USB3.0 eDP1.3 DP1.2b HDMI 1.4 TVS LANSwitch MOSFET AudioAmplifier Sensor DCDC LDO Logic Sensor TVS USB Switch LED Driver Timing Signal Integrity Switching Connectivity Audio SBR ACDC Std Linear High-Speed Serial Connectivity SBR Diode Diode DP/LAN Mux Clock Buffer ACDC External Adapter / Charger MOSFET / SBR TVS, LDO,Thyristor Bridge Rectifier TVS Thyristor Bridge Rectifier

Technology Focus Products 32 Gbps ReDrivers and Switches Automotive Packet Switch for Telematics / ADAS Complete USB Type-C Solution Low jitter timing solution for cloud computing Ultra low power and low noise LDOs for IoT Low Cj TVS for signal integrity Lowest RDS(ON) LDMOS for battery efficiency SiC Merged PiN Schottky Diodes and SiC MOSFET for industrial and automotive applications Compact QFN and DFN Power density PowerDI Chip scale packaging and plating capability Extensive multi-chip package technology High performance 8” MOSFET trench technology Advanced Epi bipolar transistor processes Proprietary rectifier technology Rugged automotive grade NMOS and PMOS Assembly/Test Wafer Fab

Assembly and Test Efficient Manufacturing + Superior Processes China: Shanghai, Chengdu, and Wuxi Taiwan: Jhongli Germany: Neuhaus US: South Portland, Maine China: Shanghai and Wuxi Taiwan: Hsinchu and Keelung UK: Greenock and Oldham Bipolar, BiCMOS, CMOS and BCD process Global footprint with strong engineering capabilities Wafer Fabs

Revenue Profile for First Quarter 2023 By End Market Computing Consumer Industrial Communications Automotive By Channel Distribution Direct By Region Asia Europe Americas 18% 13% 22% 29% 18% 71% 29% 69% 17% 14%

Income Statement – First Quarter 2023 ($ in millions, except per share amounts) 1Q22 4Q22 1Q23 Net sales 482.1 496.2 467.2 Gross profit (GAAP) 196.7 206.2 194.5 Gross profit margin % (GAAP) 40.8% 41.6% 41.6% Net income (GAAP) 72.7 92.1 71.2 Net income (non-GAAP) 80.3 79.6 73.4 Diluted EPS (non-GAAP) 1.75 1.73 1.59 Cash flow from operations 72.3 102.9 99.8 EBITDA (non-GAAP) 118.2 129.6 121.8

Balance Sheet ($ in millions) Dec 31, 2021 Dec 31, 2022 Mar 31, 2023 Cash* 373 348 335 Inventory 349 360 342 Current Assets 1,188 1,162 1,122 Total Assets 2,194 2,288 2,286 Total Debt 301 185 125 Total Liabilities 892 705 620 Total Equity 1,303 1,583 1,666 * Cash, Restricted Cash and Short-term investments

Revenue to be ~$467 million, +/- 3.0% GAAP gross margin of 41.8%, +/- 1%  Non-GAAP operating expenses 22.0% of revenue, +/- 1%, which are GAAP operating expenses adjusted for amortization of acquisition-related intangible assets Net Interest expense of ~$1.0 million Income tax rate to be 20%, +/- 3% Shares used to calculate diluted EPS approximately 46.5 million Amortization of acquisitions-related intangible assets of $3.1 million, after tax, for previous acquisitions is not included in these non-GAAP estimates *Guidance as provided on May 9, 2023 Second Quarter 2023 Business Outlook

Summary Vision: Expand shareholder value Mission: Profitability growth to drive 20%+ operating profit Next Strategic Goal: $1B gross profit Tactics: Increased focus on high-margin automotive, industrial, and Pericom products Investment for technology leadership in target products, fab processes, and advanced packaging System solutions to drive business expansion