Onsemi Components

• Global semiconductor leader in power, analog, and sensing solutions
• Broad portfolio: MOSFETs, IGBTs, SiC devices, analog ICs, image sensors, and discrete components
• Key markets: automotive electrification, industrial automation, AI data centers, renewable energy, medical devices
• Strong quality and reliability standards with full traceability
• Expert support for BOM analysis, EOL mitigation, and equivalent component validation

About onsemi: Company Overview

onsemi (Nasdaq: ON) is a publicly traded American semiconductor company focused on developing energy‑efficient power and sensing technologies. The company designs, manufactures, and distributes a wide range of semiconductor components, including discrete devices, analog and mixed‑signal ICs, power modules, and image sensors. With approximately 23,000 employees worldwide (as of 2025) and a global network of manufacturing facilities, sales offices, and design centers across North America, Europe, and Asia Pacific, onsemi serves customers in over 100 countries. The brand’s mission is to drive innovation that builds a safer, cleaner, and smarter world by enabling electrification, automation, and sustainable energy solutions.

History & Milestones

onsemi’s history is marked by strategic growth, acquisitions, and technological innovation:

• 1999: Spun off from Motorola as ON Semiconductor, focusing on analog and discrete semiconductors.
• 2000: Completed IPO and acquired Cherry Semiconductor, expanding power management capabilities.
• 2006: Acquired LSI Logic’s design and manufacturing facility in Oregon, strengthening process technology and packaging expertise.
• 2016: Acquired Fairchild Semiconductor, a major move that expanded its power semiconductor portfolio and market reach.
• 2021: Rebranded from ON Semiconductor to onsemi, reflecting its focus on intelligent power and sensing solutions.
• 2022–2025: Invested heavily in silicon carbide (SiC) manufacturing, becoming a leading supplier of SiC power devices for electric vehicles and renewable energy systems.

Core Product Portfolio

onsemi offers a diverse range of semiconductor products organized into three main segments:

1. Power Solutions Group (PSG)

• Discrete Power Devices: MOSFETs (including high‑voltage and SiC MOSFETs), IGBTs, diodes, rectifiers, and thyristors.
• Power Modules: Integrated power modules for automotive traction inverters, industrial drives, and renewable energy systems.
• Wide‑Bandgap (WBG) Devices: Silicon carbide (SiC) and gallium nitride (GaN) devices for high‑efficiency, high‑power applications.

2. Analog & Mixed‑Signal Group (AMG)

• Power Management ICs: DC‑DC converters, AC‑DC controllers, multi‑phase controllers, and voltage regulators.
• Sensor Interface ICs: Amplifiers, comparators, and signal conditioning circuits for industrial and automotive sensors.
• Connectivity ICs: CAN transceivers, LIN controllers, and Ethernet PHYs for automotive and industrial communication.

3. Intelligent Sensing Group (ISG)

• Image Sensors: CMOS image sensors for automotive ADAS, industrial machine vision, medical imaging, and consumer electronics.
• Sensing Solutions: Temperature sensors, pressure sensors, and motion sensors for industrial and automotive applications.

Key Applications

onsemi components are integral to a wide range of high‑growth industries:

• Automotive: Electric vehicle (EV) traction inverters, on‑board chargers (OBC), DC‑DC converters, ADAS imaging, and body electronics.
• Industrial: Motor drives, power supplies, solar inverters, energy storage systems, and industrial automation.
• Cloud & Data Center: High‑efficiency power supplies, server VRMs, and AI accelerator power management.
• Medical: Imaging systems, patient monitoring devices, and power‑efficient medical equipment.
• Communications: 5G base stations, telecom power supplies, and fiber optic communication systems.

How to Select onsemi Components

Proper selection ensures optimal performance, reliability, and cost‑effectiveness. Use this framework to evaluate onsemi parts:

Datasheet Review Best Practices

The onsemi datasheet is the primary source of technical specifications and application guidelines. Focus on these critical divs:

• Absolute Maximum Ratings: Never exceed these values (voltage, current, temperature) to prevent permanent damage.
• Electrical Characteristics: Verify parameters at operating conditions (Vcc, temperature, load).
• Thermal Resistance: Calculate junction temperature (Tj) to ensure reliable operation.
• Package Dimensions: Confirm footprint compatibility with your PCB design.
• Application Circuits: Use reference designs for optimal performance (e.g., DC‑DC converter layouts).
• Reliability Data: Review MTBF (Mean Time Between Failures) and qualification test results.

Equivalent, Alternative & Cross‑Reference Guidelines

Supply chain disruptions, shortages, and EOL status often require alternative components. Follow this process to identify valid onsemi equivalents:

When to Seek Alternatives

• Shortage: onsemi part is out of stock with long lead times (>16 weeks).
• EOL/Obsolete: Part is discontinued or marked NRND.
• Cost Reduction: Target lower‑cost alternatives without compromising performance.
• Improved Performance: Upgrade to newer onsemi parts with better efficiency or specs.

Critical Cross‑Reference Checks

Cross‑referencing is not just about matching pinouts. Verify these parameters before approving an alternative:

Key Note: All alternative parts must be reviewed and approved by engineering before production implementation.

Genuine onsemi Components: Verification Methods

Counterfeit semiconductors pose severe risks, including system failure, safety hazards, and production delays. Use this multi‑layered inspection process to verify genuine onsemi components:

Managing Shortage, EOL & Obsolete Risks

Proactive supply chain management minimizes disruptions from onsemi part shortages or obsolescence:

1. Monitor Lifecycle Status: Regularly check onsemi’s website or BOM management tools for EOL/NRND updates.
2. Secure Allocations: Work with authorized distributors to secure allocated stock for high‑volume parts.
3. Identify Approved Alternatives: Use onsemi’s cross‑reference tools or contact technical support for recommended replacements.
4. Last‑Time Buys (LTB): Purchase sufficient inventory during the LTB window for EOL parts.
5. Redesign Opportunities: For critical obsolete parts, evaluate redesign with newer onsemi components (e.g., SiC MOSFETs replacing silicon devices).
6. Safety Stock: Maintain strategic safety stock for high‑risk, long‑lead‑time components.

RFQ & BOM Preparation: What to Provide

Accurate and complete information speeds up quoting and ensures accurate pricing and lead times. Prepare these details for onsemi component RFQs:

Frequently Asked Questions (FAQs)

Conclusion

Selecting and sourcing onsemi components requires careful attention to technical specifications, quality verification, and supply chain risk management. Before finalizing any purchase, engineers and procurement teams must confirm product fit with system requirements, conduct a thorough datasheet review, verify lifecycle status to avoid obsolescence, validate equivalent or alternative parts for supply chain resilience, perform genuine component verification to mitigate counterfeit risks, and confirm packaging, date code, and lot consistency for traceability. Additionally, evaluating lead time and supplier traceability ensures reliable, on‑time delivery for production.

Customers can contact us for onsemi products and related component sourcing. We support safe and reliable supply chain sourcing, providing 100% genuine onsemi components with traceable supply records and inspection before shipment. Our team helps buyers find, verify, and qualify approved equivalent alternatives for obsolete, EOL, or out‑of‑stock onsemi components. We can provide 15‑year traceability records for supplied components and offer free BOM health analysis to check EOL risk, shortage risk, lead time risk, alternative options, and supply chain availability. We also support DFM checks for PCBA‑related projects to reduce design, sourcing, and production risks before manufacturing.

For all your onsemi component sourcing needs, reach out to our expert team at sales@melsonchip.com.