onsemi Powers Sineng Electric’s Advanced Solar and Energy Storage Solutions

Rhea-AI Summary

onsemi (NYSE:ON) won a design contract with Sineng Electric to supply its latest FS7 IGBT + EliteSiC hybrid power integrated modules (PIMs) for Sineng’s 430 kW liquid‑cooled energy storage systems and 320 kW utility‑scale solar inverters.

Benchmarks show up to 0.1% efficiency gains, 32% higher power density, and reduced switching losses and thermal resistance, enabling higher system ratings without increasing footprint.

Positive

• System power density +32% enabling higher ratings in same footprint
• Switching losses -10% at module level reducing conversion losses
• Thermal resistance -9.3% to heat sink improving cooling efficiency

Negative

• None.

Key Figures

ESS power rating: 430 kW Solar inverter rating: 320 kW Efficiency gain: 0.1% +5 more

8 metrics

ESS power rating 430 kW Sineng next-generation liquid-cooled energy storage systems

Solar inverter rating 320 kW Sineng utility-scale solar string inverter baseline power

Efficiency gain 0.1% Increase in efficiency vs previous generation modules

Power density improvement 32% Increase in power-to-weight/system power density at inverter level

Lower power dissipation 8% Reduction in power dissipation vs previous generation

Lower switching losses 10% Reduction in switching losses vs previous generation

RTE increase 0.75% Round-trip efficiency improvement in 430 kW string ESS

Aux power reduction 5% Reduction in auxiliary power consumption for 430 kW string ESS

Market Reality Check

Price: $55.66 Vol: Volume 8,366,091 vs 20-da...

normal vol

$55.66 Last Close

Volume Volume 8,366,091 vs 20-day avg 7,397,680 (relative volume 1.13) ahead of the announcement. normal

Technical Price at 55.66, trading slightly above 200-day MA of 55.27 but 24.54% below 52-week high.

Peers on Argus

ON was down 4.61% with key peers also weak: GFS -4.84%, STM -4.96%, UMC -3.37%, ...

ON was down 4.61% with key peers also weak: GFS -4.84%, STM -4.96%, UMC -3.37%, ASX -5.45%, CRDO -7.69%. Despite broad peer softness, the momentum scanner did not flag a coordinated sector move.

Historical Context

5 past events · Latest: Feb 24 (Neutral)

Pattern 5 events

Date	Event	Sentiment	Move	Catalyst
Feb 24	Analyst Day announcement	Neutral	-0.5%	Planned Financial Analyst Day outlining strategy and long-term financial plan.
Feb 09	Earnings results	Positive	+3.5%	Q4 and full-year 2025 results with strong free cash flow and new buyback.
Jan 23	Earnings date notice	Neutral	-1.7%	Announcement of date and logistics for Q4 and 2025 results release.
Dec 18	Technology collaboration	Positive	+1.9%	GaN power device development partnership with GlobalFoundries for high-growth markets.
Dec 15	Management board role	Neutral	-1.0%	ON’s CFO joining Lumentum’s board, highlighting his corporate finance expertise.

Pattern Detected

Recent ON news, including earnings and technology collaborations, has typically produced modest single-digit price moves, with no clear pattern of selling on positive announcements.

Recent Company History

Over the last six months, ON has combined financial execution with strategic technology moves. Q4 2025 results showed revenue of $1,530.1M and full-year revenue of $5,995.4M, alongside a new $6B repurchase authorization. The company also announced a GaN collaboration with GlobalFoundries aimed at higher-efficiency power devices. Other items included scheduling the Q4/2025 earnings release and a future Financial Analyst Day. Today’s design-win news with Sineng Electric continues the theme of expanding ON’s power solutions footprint in renewable and AI-related infrastructure.

Market Pulse Summary

This announcement highlights a design win that places ON’s FS7 IGBT and EliteSiC-based hybrid module...

Analysis

This announcement highlights a design win that places ON’s FS7 IGBT and EliteSiC-based hybrid modules at the core of Sineng’s 430 kW ESS and 320 kW solar inverters. System-level gains include up to 0.75% higher round-trip efficiency and 32% better power density. In recent months, ON has paired such technology milestones with solid financial results and capital return plans. Investors may watch future design wins, execution in renewable and AI power markets, and ongoing regulatory filings for additional context.

Key Terms

silicon carbide, energy storage systems, string inverter, silicon carbide

4 terms

silicon carbide technical

"Field Stop (FS7) insulated-gate bipolar transistor (IGBT) and silicon carbide (SiC) hybrid PIMs"

Silicon carbide is a hard, durable material made from silicon and carbon, often used in industrial applications like cutting tools and electronics. Its ability to withstand high temperatures and conduct electricity efficiently makes it valuable in manufacturing advanced electronic devices. For investors, companies working with silicon carbide are seen as key players in the growing market for high-performance electronics and energy-efficient technologies.

energy storage systems technical

"430 kW liquid-cooled energy storage systems (ESS) and 320 kW utility‑scale solar inverter"

Energy storage systems are technologies that capture electricity when it’s plentiful or cheap and release it when demand or prices are higher, like a large rechargeable battery for a neighborhood or power grid. They matter to investors because they enable more reliable power, smooth out the ups and downs of renewable energy, and can create new revenue streams or cost savings by shifting when power is sold or used.

string inverter technical

"320 kW utility‑scale solar string inverter"

A string inverter is an electrical device that converts the direct current produced by a string of solar panels into the alternating current used by homes, businesses and the power grid. Think of it as the translator between solar panels and usable electricity; its efficiency, reliability and built‑in monitoring affect energy output, maintenance costs and project returns, so investors watch inverter choice as part of solar system performance and risk.

silicon carbide technical

"Si/SiC Hybrid Modules Datasheet: NXH500B100H7F5SHG"

Silicon carbide is a hard, durable material made from silicon and carbon, often used in industrial applications like cutting tools and electronics. Its ability to withstand high temperatures and conduct electricity efficiently makes it valuable in manufacturing advanced electronic devices. For investors, companies working with silicon carbide are seen as key players in the growing market for high-performance electronics and energy-efficient technologies.

AI-generated analysis. Not financial advice.

EliteSiC technology boosts efficiency, power density and long-term reliability for Sineng’s high-power energy storage and solar inverter solutions

Summary

onsemi announced a new design win with Sineng Electric, which will feature onsemi’s latest‑generation hybrid power integrated module (PIM) in two utility‑scale renewable energy platforms. The PIM features onsemi’s FS7 insulated‑gate bipolar transistor (IGBT) and EliteSiC technology and will be used in Sineng’s next‑generation 430 kW liquid‑cooled energy storage systems (ESS) and 320 kW utility‑scale solar string inverter. Using onsemi’s technology, the Sineng solutions will deliver improved efficiency, higher power density, lower switching losses and improved thermal performance, advancing performance standards in utility-scale renewable energy applications. In benchmark testing against competing power modules, onsemi’s FS7‑based hybrid PIM delivered a 0.07% efficiency improvement and reduced losses by 225 W in a 320 kW solar inverter configuration.

News Highlights

• onsemi secures new design win with Sineng Electric to power its 430 kW liquid-cooled energy storage systems and 320 kW solar inverter
• onsemi’s latest‑generation PIM enables up to a 0.1% efficiency increase, driving a 32% improvement in power‑to‑weight performance at the inverter system level
• The hybrid power integrated module features a high-density F5BP package integrating FS7 insulated-gate bipolar transistors and EliteSiC technology to deliver up to 8% lower power dissipation, 10% lower switching losses, and higher power density

SCOTTSDALE, Ariz., March 31, 2026 (GLOBE NEWSWIRE) -- onsemi announced today that its hybrid power integrated modules (PIMs) will be featured in Sineng Electric’s next-generation 430 kW liquid-cooled string energy storage systems (ESS) and 320 kW utility-scale solar inverter. The design win builds upon the longstanding collaboration between onsemi and Sineng to deliver high-performance, future-ready solutions in the growing renewable energy and AI infrastructure markets.

Industry-Leading Power Module Technology
At the core of Sineng’s new platforms, onsemi’s latest-generation Field Stop (FS7) insulated-gate bipolar transistor (IGBT) and silicon carbide (SiC) hybrid PIMs in the F5BP package are engineered to boost the power output of utility-scale solar string inverters and energy storage systems (ESS). Compared to previous generations, the modules offer 32% increased power density with 0.1% higher efficiency within the same footprint to increase the total system power of a solar inverter from 320 kW to 350 kW.

Setting New Standards for Efficiency and Reliability
onsemi’s hybrid F5BP PIMs integrate the company’s FS7 IGBT and EliteSiC diode technologies, reducing power dissipation by up to 8% and switching losses by 10% compared to previous generations. Their advanced direct bonded copper (DBC) substrate design minimizes stray inductance and lowers thermal resistance to the heat sink by 9.3%. Together, the reduction in switching losses and thermal resistance enables up to 32% higher system power at the same weight and density compared to prior‑generation designs. The modules also feature an optimized electrical layout and an innovative baseplate design that enhance thermal management. This combination enables superior system performance and enhanced long-term reliability.

Compared to previous-generation modules, onsemi’s latest FS7‑based hybrid PIM combines lower switching losses and reduced thermal resistance, enabling the following system‑level improvements in Sineng’s new 430 kW string ESS:

• A 0.75% increase in round-trip efficiency (RTE), building on module‑level efficiency gains demonstrated in benchmark testing
• 5% reduction in auxiliary power consumption, lowering total operating costs
• Higher power density, reducing the number of required modules and cutting component costs
• Cooler operation under high loads and improved reliability

Enabling a More Stable and Reliable Renewable Grid
“Utility‑scale operators are laser‑focused on squeezing more kilowatts from the same footprint while cutting lifecycle costs. By integrating onsemi’s F5BP package hybrid modules into our 430 kW ESS and 320 kW inverter platforms, we’re addressing two industry imperatives at once: higher power density that uplifts system ratings, and conversion efficiency gains that compound at gigawatt scale. Those incremental improvements translate into real savings for product development and a more stable, dispatchable renewable grid.” – Jianfeng Sun, General Manager of Research and Development, Sineng Electric

“Developers need solutions that fit existing layouts, simplify thermal design, and reduce energy losses. By pairing FS7 IGBTs with EliteSiC diodes in our F5BP modules, we deliver higher conversion efficiency and power density without increasing the footprint, enabling significantly higher power ratings at the same system size. This combination allows utility‑scale solar and storage sites to increase output from existing installations, while improving reliability and lowering lifetime operating costs.” – Sravan Vanaparthy, VP & GM of IGBT Power Division, onsemi

More Information:

Product Pages: NXH500B100H7F5SHG; NXH600N105L7F5P2HG; NXH600N105L7F5S2HG; NXH600N105L7F5SHG; Si/SiC Hybrid Modules

Datasheet: NXH500B100H7F5SHG

Solution Guides: Solar Inverter; Energy Storage

White Papers: BRD8095 - Overcoming the Challenges of Silicon Carbide to Ensure Application Success; TND6386 - Topologies for Commercial String Solar Inverter

About onsemi
onsemi (Nasdaq: ON) delivers intelligent power and sensing technologies that enable electrification, energy efficiency, safety, and automation across automotive, industrial, and AI data center end‑markets. With a highly differentiated and innovative product portfolio, onsemi helps customers solve complex challenges to achieve higher efficiency, improved performance, and lower system cost, while supporting a safer, cleaner, and more energy‑efficient world. The company is part of the S&P 500® index. Learn more at www.onsemi.com.

onsemi and the onsemi logo are trademarks of Semiconductor Components Industries, LLC. All other brand and product names appearing in this document are registered trademarks or trademarks of their respective holders. Although the Company references its website in this news release, information on the website is not to be incorporated herein.

Contact:
Michael Mullaney
michael.mullaney@onsemi.com
+1 838-289-7314

FAQ

What does onsemi's design win with Sineng (ON) mean for the 430 kW ESS?

It means Sineng’s 430 kW ESS will use onsemi hybrid PIMs to raise system performance and efficiency. According to onsemi, the modules cut switching losses and thermal resistance, enabling higher power density, improved round‑trip efficiency, and cooler operation under heavy load.

How much power density improvement does onsemi claim for Sineng’s inverter platforms (ON)?

onsemi claims up to a 32% increase in power density at the system level for Sineng platforms. According to onsemi, the F5BP package and FS7/EliteSiC hybrid design deliver higher kilowatts per footprint while keeping inverter size unchanged.

What efficiency and loss reductions did onsemi report for the 320 kW solar inverter (ON)?

Benchmarks showed up to a 0.07% efficiency gain and a 225 W loss reduction in a 320 kW inverter configuration. According to onsemi, the FS7‑based hybrid PIM also supports up to 0.1% efficiency increases and lower overall power dissipation.

Which onsemi technologies power Sineng’s new solar and storage products (ON)?

Sineng’s products integrate onsemi’s FS7 insulated‑gate bipolar transistors and EliteSiC diode technology in an F5BP hybrid PIM. According to onsemi, this combination reduces switching losses and improves thermal performance for utility‑scale applications.

What system‑level benefits does Sineng expect from using onsemi PIMs in 2026 (ON)?

Sineng expects higher system ratings, lower auxiliary consumption, and improved reliability from onsemi PIMs. According to Sineng, the modules enable increased output from existing installations, lower operating costs, and cooler operation under high loads.