J
JLSemi
A manufacturing company that specializes and excels in high-speed Analog, advanced DSP, and mixed-signal designs
About JLSemi
JLSemi is a fabless semiconductor company headquartered in Shanghai, China, that specializes in the design of high-performance Ethernet physical layer (PHY) chips. Founded in 2019 by Co-CEOs Ho Ion Sang and Dr. He Runsheng, the firm concentrates on developing solutions for high-speed analog, advanced digital signal processing (DSP), and mixed-signal applications. The company operates on a fabless business model, focusing exclusively on chip design and the development of its intellectual property, while outsourcing the capital-intensive manufacturing process to dedicated semiconductor foundries. JLSemi has established research and development centers in key Chinese technology hubs, including Shanghai, Nanjing, and Shenzhen, to support its innovation pipeline.
The company's product portfolio is engineered to enhance data transmission capabilities, primarily for telecommunications providers and industrial network operators. JLSemi has developed a range of Ethernet PHY and switch products, including its Antelope™ Industrial Series, Cheetah™ Automotive Series, and SailFish™ Data Communication Series, which were introduced in 2020. These products cater to various Ethernet standards such as 10/100/1000Base-T and automotive-specific 100/1000Base-T1. A notable area of focus is the automotive sector, where the company's technology supports the shift in vehicle E/E architecture toward Ethernet-based systems for applications like advanced driver-assistance systems (ADAS) and in-vehicle vision solutions. In August 2021, JLSemi entered into a strategic joint venture with Will Semiconductor to co-develop in-vehicle video transmission chips, aiming to provide end-to-end solutions for next-generation smart cars.
JLSemi's business model revolves around the sale of its semiconductor chips to clients in the industrial automation, video surveillance, and automotive industries. Its products, like the JL1101-N032C Fast Ethernet PHY transceiver, are designed for space-constrained embedded systems and are noted for features that exceed IEEE specifications, such as extended cable range performance beyond 200 meters. The company has successfully secured significant investment from various capital firms, including Matrix Partners China, Summitview Capital, and GP Capital, to fuel its research, development, and market expansion efforts.
Source: Dealroom company dataAt a glance
- Status
- Operational
- Founded
- 2009
- Headquarters
- Jing'an District, China
- Employees
- 36
- Open positions
- None listed
- Dealroom signal
- 39.0/100
- Industry
- Semiconductors
- Sector
- Semiconductors, Semiconductor Designers and Manufacturers, Hard Tech, DT and LS, science-based
- Technology
- Hardware, Deep Tech
- Business model
- Manufacturing
- Client focus
- b2b
- Investment activity
- 1 company, latest Jun 2022
- Capital deployed
- $14M
- Preferred round
- SERIES A
Knowledge graph
More headlines
Funding history
Company financing events and reported valuations.
| Deal type | Date | Amount | Valuation | Investors | Source |
|---|---|---|---|---|---|
| LATE VCOther financing | Jun 2025 | $28M | $756M | SDIC Fund Management | ↗ |
| SERIES COther financing | Jul 2022 | $90M | $360M | Renchen Semiconductor · Summitview Capital · GP Capital · Inno-Chip | ↗ |
Growth signals
Latest recorded traffic for JLSemi is 160 monthly website visits, down 77.5% over the last three months. JLSemi's team grew 0% over the past year.
Similar companies
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Investments and acquisitions
Recent portfolio relationships for companies that also act as investors or acquirers.
Investors
From Dealroom's funding and investor records, grouped by the round each investor first entered.
Series A4 investors entered at this stage
- JCJingwei China
Hengxu Capital- INInno-Chip
- RSRenchen Semiconductor
Series B and later3 investors entered at this stage
Summitview Capital- GCGP Capital
SDIC Fund Management
Source: Dealroom Talent Intelligence.
Global footprint
team presence
Market sentiment
An AI-synthesised read of the highest-engagement posts about JLSemi on X, ranked by likes and reposts, corporate channels excluded.
Reading the room on X — pulling top posts and synthesizing themes…
Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour
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