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JLSemi

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A manufacturing company that specializes and excels in high-speed Analog, advanced DSP, and mixed-signal designs

Jing'an District, ChinaFounded 2009Semiconductors
Valuation $500M–1B Last recorded · 2025
Headcount <100 Current team size
Total funding $100–500M Disclosed equity funding
Unlock exact values This page shows ranges. Dealroom has the exact numbers for JLSemi and the history behind them.

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 data

At 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

Funding history

6 recorded events

Company financing events and reported valuations.

Deal typeDateAmountValuationInvestorsSource
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 ↗
Showing the latest 2 of 6 recorded eventsBook a demo for the full funding history →

Growth signals

JLSemi website traffic

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.

Latest monthly visits160 3-month web change-77.5% 1-year team growth0%
Summary metrics are public; monthly history is available with a demoCompare with peers →

Similar companies

Closest operating peers by Dealroom taxonomy

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Investments and acquisitions

Capital deployed

Recent portfolio relationships for companies that also act as investors or acquirers.

Investors

7 investors on the cap table

From Dealroom's funding and investor records, grouped by the round each investor first entered.

Series A4 investors entered at this stage

  • Jingwei China
  • Hengxu Capital
  • Inno-Chip
  • Renchen Semiconductor

Series B and later3 investors entered at this stage

  • Summitview Capital
  • GP Capital
  • SDIC Fund Management
Employees 36 total headcount
Founders Hidden — book a demo/100 quality score
Key operators Hidden — book a demo quality score
Potential founders Hidden — book a demo likely future founders
Startup mafia Hidden — book a demo alumni-founded startups
Talent movements Hidden — book a demo in · Hidden — book a demo out past 12 months

Source: Dealroom Talent Intelligence.

Global footprint

Workforce and web traffic by country
Workforce by country
3 countries with
team presence
🇨🇳 China89.3%
🇺🇸 United States7.1%
🇸🇪 Sweden3.6%
3 countries shown

Market sentiment

Posts on X, past 7 days

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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