What Aeonsemi does

Aeonsemi is a fabless semiconductor company founded in August 2018 in Santa Clara, California, with primary R&D operations in Nanjing, China. The company designs mixed-signal and DSP-centric communication ICs organized into three core product families: ChronoPHY multi-rate 10GBASE-T Ethernet PHYs (with second-generation AS22010 in production as of May 2026, delivering a 40% power reduction versus first-generation); Arcadium pure-CMOS silicon oscillators and Kronos-D/Kronos-S TCXO timing devices (with over 10 million Arcadium units shipped with zero defects across broadband, networking, data center, and industrial applications); and Nemo, an IEEE 802.3ch compliant multi-Gigabit automotive Ethernet chipset family for ADAS, zonal E/E architectures, and in-vehicle networking. The portfolio targets OEMs and Tier-1 suppliers in enterprise networking, broadband access, AI edge infrastructure, and automotive segments, with products manufactured on TSMC's advanced process nodes and certified to AEC-Q100 Grade 2 and ISO26262 ASIL-B for automotive variants.

The company operates a fabless business model, generating revenue through direct hardware sales of its ICs on a quote-based, multi-year contract basis, with samples, evaluation boards, and custom OEM part numbering available through its direct sales channel. Go-to-market combines a digital presence (corporate website, resource library, LinkedIn), industry events (notably AutoSens Detroit for automotive), press and PR distribution, and consultative enterprise field sales. Target customers include networking equipment manufacturers, broadband CPE vendors, AI infrastructure platforms (e.g., Radxa AI NAS), automotive Tier-1s and OEMs, and industrial systems integrators requiring high-precision timing and deterministic Ethernet connectivity.

Aeonsemi has raised approximately $36 million in disclosed equity across two rounds: a $10.95 million oversubscribed Series A in February 2019 led by Walden International and Eight Square Capital, and a $25 million Series B in May 2021 led by IDG Capital and co-led by Susquehanna International Group (SIG), with additional participation from Sequoia Capital and Walden International. The company is led by co-founder and CEO Yunteng Huang alongside co-founders Colin Weltin-Wu and Xi Chen, with a team of 51-100 employees. Revenue, valuation, and unit-level shipment data beyond the 10M+ Arcadium milestone remain undisclosed.

Name

Aeonsemi

Legal name

Aeonsemi, Inc.

Website

https://aeonsemi.com

Company type

Private

Founded year

2018

Operating status

Operating

Headcount range

51–100 employees

Short description

Aeonsemi is a fabless semiconductor company designing mixed-signal DSP-centric Ethernet PHY, silicon oscillator, and automotive Ethernet ICs (ChronoPHY, Arcadium/Kronos, Nemo families) for enterprise networking, broadband access, AI edge infrastructure, and automotive Tier-1/OEM customers.

Ownership category

akta.pro rank

Product category

Networking Semiconductors

NAICS

Other Communications Equipment Manufacturing (334290), Instrument Manufacturing for Measuring and Testing Electricity and Electrical Signals (334515)

SIC

Electronic & Other Electrical Equipment (No Computer Equip) (3600)

akta.pro primary industry

Analog & Mixed-Signal ICs (HDAHAAAD)

akta.pro secondary industry

Embedded & Industrial Network Interfaces (PCIe/M.2/SOM/SoC NICs) (HDAFAEAI)

Keywords

• Mixed-signal ICs
• Ethernet PHY chips
• Automotive Ethernet
• Silicon oscillators
• Timing synchronization

Headquarters

HQ city

Santa Clara

HQ country

United States

HQ region

North America

Offices2 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Technology or R&D, Personnel, Supply Chain, Operations, Marketing or Sales

Revenue model

1. Semiconductor IC Sales: Aeonsemi generates revenue through the sale of mixed-signal communication ICs including Ethernet PHYs, silicon oscillators, TCXOs, and automotive Ethernet chipsets. The company operates as a fabless semiconductor company, selling chips directly to customers for integration into their products.
2. Custom/OEM Semiconductor Solutions: Aeonsemi offers customizable oscillator and PHY solutions with configurable options, allowing customers to order custom part numbers with specific configurations, supporting volume production and specialized applications.

Pricing tiers

Go-to-market motion2 records

Distribution channels2 records

Marketing channels4 records

Core offering

Aeonsemi is a fabless IC company that designs and sells mixed-signal, DSP-centric communication semiconductors for network communication applications. Its product portfolio includes multi-rate copper Ethernet PHYs (ChronoPHY™ series), automotive multi-gigabit Ethernet chipsets (Nemo™ series), and silicon-based timing devices including oscillators and TCXOs (Arcadium™ and Kronos families). The chips are sold to enterprise OEMs and module makers in broadband access, networking, data center, and automotive markets.

Product overview

Aeonsemi is a fabless semiconductor company designing high-performance mixed-signal and DSP-centric communication ICs for intelligence computing networks. The product portfolio spans three core families: ChronoPHY multi-rate copper Ethernet PHYs (targeting broadband access, enterprise networking, and Wi-Fi backhaul), Nemo multi-gigabit automotive Ethernet chipsets (for in-vehicle networking in robots, autonomous vehicles, and UAVs), and Arcadium silicon oscillators, TCXOs, and timing synchronization devices (for high-speed networking equipment). ChronoPHY products are organized into first-generation AS210xx variants (offering 10 Gbps, 5 Gbps, and 2.5 Gbps single-port PHYs in 7×7 mm and 11×11 mm BGA packages with IEEE 1588v2 PTP and SyncE options) and second-generation AS22010 variants (featuring 40% power reduction, enhanced SyncE+PTP timing, and ITU-T G.8273.2 Class D compliance). The Nemo family provides IEEE 802.3ch-compliant end-to-end in-vehicle networking with single/dual-port 10GBASE-T1 PHYs (AS30010/20), a CSI-2 serializer bridge (AS30110), a quad-port aggregation deserializer hub with TSN (AS30240), and a 6-port zonal Ethernet switch with 40 Gbps bandwidth (AS30340). The timing portfolio includes the Kronos-D differential TCXO series (AS5201/21/03/23, 10 MHz to 156.25 MHz, 52 fs jitter, ±5/20 ppm stability) and Kronos-S LVCMOS TCXO series (AS5211/31, 10 MHz to 76.8 MHz, 93 fs jitter, ±0.5/20 ppm stability), alongside the Arcadium pure-silicon oscillator series (AS500x/AS51x, 10 kHz to 350 MHz, 350 fs jitter, no quartz or MEMS components) offered in fixed-frequency, multi-frequency, and I2C-programmable configurations.

Differentiator

Problem solved

Functional benefit

Brands

• ChronoPHY: Multi-rate 10G Ethernet PHY product family featuring advanced timing architecture for low-jitter and low-latency operation in time-sensitive networking applications.
• Nemo
• Arcadium

Products and services

• ChronoPHY Multi-Rate 10G Ethernet PHY Series Multi-rate single-port 10GBASE-T/5GBASE-T/2.5GBASE-T Ethernet PHY family using ChronoPHY technology with IEEE 1588v2 PTP (<1 ns timestamping) and SyncE jitter filtering PLL. Designed for broadband access, Wi-Fi 7/8 APs, XGS-PON CPE, multi-gigabit enterprise edge, AI NAS, desktop workstations, and embedded compute platforms.
• ChronoPHY AS22010 2nd Generation 10GBASE-T PHY Low-power multi-rate single-port 10GBASE-T Ethernet PHY with integrated SyncE PLL and 25-250 MHz any-rate fractional SyncE output clock, designed for deterministic AI edge infrastructure such as Wi-Fi 7/8 APs, XGS-PON CPE, AI NAS, and multi-gigabit enterprise edge switches.
• Nemo Multi-Gigabit Automotive Ethernet Chipset Complete IEEE 802.3ch-compliant multi-gigabit automotive Ethernet chipset family comprising single/dual-port 10GBASE-T1 PHYs (AS30010/AS30020), CSI-2 to Ethernet serializer bridge (AS30110), quad-port TSN aggregation deserializer hub (AS30240), and a 6-port zonal Ethernet switch with integrated MGBASE-T1 PHYs and 40 Gbps bandwidth (AS30340). Targets ADAS, FSD, sensor integration, and zonal E/E architectures.
• Arcadium Silicon Oscillator Family Pure-CMOS silicon oscillator family (AS5001, AS5002, AS5003 differential; AS511, AS512 LVCMOS) providing quartz-free, MEMS-free clocks from 10 kHz to 350 MHz with 350 fs typical phase jitter, available in fixed-frequency, multi-frequency, and I2C-programmable configurations for high-speed networking equipment.
• Kronos-D Differential TCXO Family High-performance differential temperature-compensated crystal oscillator (TCXO) family (AS5201, AS5221, AS5203, AS5223) using digital temperature sensing and compensation, generating ±5 ppm or ±20 ppm temperature-stable differential clocks from 10 MHz to 156.25 MHz with 52 fs jitter, in fixed-frequency and I2C digitally controlled configurations.
• Kronos-S LVCMOS TCXO Family High-precision LVCMOS TCXO family (AS5211, AS5231) using digital temperature sensing and compensation, generating ±0.5 ppm or ±20 ppm temperature-stable LVCMOS clocks from 10 MHz to 76.8 MHz with 93 fs jitter for high-precision clocking in networking and industrial applications.

Quantifiable outcome

• 40% lower power consumption compared to first-generation ChronoPHY™ at 10G/100m
• +5 more outcomes

Named customers2 records

Segments4 records

Ideal customer profiles3 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Two partnerships are on record, tiered core.

• RadxacoreTechnology or Integration · 2 June 2026Radxa integrates Aeonsemi's AS22010 10GBASE-T Ethernet PHY into their AI NAS platforms (DragonBay NAS and DragonStation NAS). The AS22010 enables dual 10GBASE-T connectivity providing high-bandwidth RJ45 copper Ethernet for AI-assisted workflows, media file transfers, and shared storage access over standard Cat6a copper cabling up to 100 meters.
• TSMC (Taiwan Semiconductor Manufacturing Company)coreTechnology or IntegrationAeonsemi's ChronoPHY™ and Nemo™ products are designed on TSMC's advanced process node, leveraging TSMC's manufacturing capabilities for production. This partnership enables Aeonsemi to deliver high-performance ICs with industry-leading cable reach and reliability.

Scale indicators5 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Marvell Technology: Marvell is a leading supplier of multi-gigabit Ethernet PHYs, automotive Ethernet, and networking ICs. Directly comparable to Aeonsemi's ChronoPHY and Nemo product families, competing for the same enterprise networking, broadband, and automotive Tier 1 customers.
• Microchip Technology: Microchip (via its Micrel acquisition) is a major supplier of Ethernet PHYs across multi-gigabit copper and automotive segments, and a leading provider of timing/oscillator products. Direct competitor to both Aeonsemi's ChronoPHY/Nemo and Arcadium families.
• NXP Semiconductors: NXP is a dominant supplier of automotive Ethernet PHYs, switches, and networking ICs through its automotive-focused portfolio. Competes head-to-head with Aeonsemi's Nemo chipset family for Tier 1 automotive design wins in zonal E/E architectures and ADAS.
• Realtek Semiconductor: Realtek is a high-volume supplier of Ethernet PHYs and networking ICs, particularly in consumer and SMB networking equipment. Competes with Aeonsemi's ChronoPHY in multi-gigabit switches, routers, and broadband CPE markets.
• SiTime: SiTime is the leading pure-play silicon (MEMS-based) oscillator company, directly competing with Aeonsemi's Arcadium family in timing and TCXO markets. Both target displacement of quartz oscillators in networking, data center, and industrial applications.
• Silicon Labs: Silicon Labs offers timing products, oscillators, and mixed-signal ICs targeting IoT, industrial, and networking applications. Overlaps with Aeonsemi's Arcadium silicon oscillator portfolio and shares a similar fabless mixed-signal DNA.
• Renesas Electronics: Renesas (including the former IDT timing business) supplies automotive Ethernet PHYs and switches, plus a broad timing portfolio. Competes with both Aeonsemi's Nemo automotive chipsets and Arcadium timing products.
• Abracon: Abracon is a major supplier of timing devices including oscillators and TCXOs targeting networking, broadband, and industrial applications. Competes with Aeonsemi's Arcadium and Kronos product families, particularly where customers still use quartz-based timing solutions.

Broad incumbents

• Broadcom: Broadcom is the dominant incumbent in Ethernet PHY and switching silicon for data center, enterprise, and broadband. While not a specialized competitor, its broad portfolio and scale set the competitive ceiling for Aeonsemi's ChronoPHY products.
• Texas Instruments: Texas Instruments is a broad-line analog and mixed-signal semiconductor leader with Ethernet PHY and oscillator/timing product lines. While not specializing in Aeonsemi's niches, TI's scale and customer reach make it a competitive factor in both PHY and timing segments.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/aeonsemi

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 records

Funding overview

Funding rounds1 record

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Aeonsemi