Liyang Semiconductor
Liyang Semiconductor (里阳半导体) is a privately held Chinese IDM founded in 2018 that designs and manufactures power semiconductor discrete devices — TVS, ESD, GDT, SPG, TSS, rectifier diodes, and thyristors — serving automotive, industrial, communications, consumer, and photovoltaic energy storage customers primarily across China.
- Company typePrivate
- Founded2018
- HeadquartersTaizhou, China
- Headcount11–50
- GTM typeB2B
- OfferingHardware or Manufacturing
What Liyang Semiconductor does
Liyang Semiconductor (里阳半导体) is a privately held Chinese Integrated Device Manufacturer (IDM) founded in August 2018, specializing in power semiconductor discrete devices for circuit protection. The company's portfolio spans Transient Voltage Suppression (TVS) diodes, Electrostatic Discharge (ESD) protection diodes, Gas Discharge Tubes (GDT), Glass Discharge Tubes (SPG), Thyristor Surge Suppressors (TSS), rectifier diodes, and silicon-controlled rectifiers (thyristors). It claims four proprietary process technologies — multi-layer stacking, high junction-temperature low-leakage, multi-layer passivation, and ultra-strong anti-interference thyristor — that underpin a catalog of more than 3,000 AEC-Q101-qualified automotive SKUs across 200+ package types.
The company operates a vertically integrated model with chip design, wafer fabrication, packaging, and testing in-house, headquartered at the Liyang Semiconductor Industrial Park in Yuhuan City, Zhejiang Province, and supported by a sales and marketing center in Shenzhen. Its customers span automotive electronics (primary), network communications, security/surveillance, consumer appliances, photovoltaic energy storage, industrial power, and LED lighting, with AEC-Q101, IATF 16949, ISO 9001, and ISO 14001 certifications as gating credentials for OEM and Tier-1 design wins.
Commercially, Liyang sells direct to enterprise customers via its Shenzhen sales center and through a website-based sample request and order system for mid-market accounts, with quote-based pricing typical of automotive-grade and industrial-grade discrete components. Revenue is not publicly disclosed, but the company reported 27.87% year-over-year revenue growth and full production capacity utilization in Q1 2026, and its website advertises 100+ open positions, indicating active scaling beyond the 11–50 headcount baseline. The business has been funded to date by a ~$15.7M round led by IDG Capital in March 2022, and participated in the May 2026 STAR Market semiconductor earnings briefing, signaling positioning toward the Chinese public capital markets.
Liyang Semiconductor firmographics
Firmographics- Name
- Liyang Semiconductor
- Legal name
- 深圳市里阳半导体有限公司 (Shenzhen Liyang Semiconductor Co., Ltd.)
- Website
- https://liownsemi.com
- Company type
- Private
- Founded year
- 2018
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Liyang Semiconductor (里阳半导体) is a privately held Chinese IDM founded in 2018 that designs and manufactures power semiconductor discrete devices — TVS, ESD, GDT, SPG, TSS, rectifier diodes, and thyristors — serving automotive, industrial, communications, consumer, and photovoltaic energy storage customers primarily across China.
- Ownership category
- akta.pro rank
Liyang Semiconductor industry classification
Industry- Product category
- Power Semiconductor Discrete Devices
- NAICS
- Semiconductor and Other Electronic Component Manufacturing (33441), Semiconductor and Related Device Manufacturing (334413)
- SIC
- Semiconductors & Related Devices (3674)
- akta.pro primary industry
- Automotive & Industrial-Grade IDMs (HDAHAAAI)
- akta.pro secondary industries
- Semiconductors for Industrial Control & Power (MCUs, DSPs, FPGAs, ASICs, IGBTs, MOSFETs, diodes) (IMAGAJAE), EV/Industrial Charging Power Electronics (Chargers, rectifiers, power stages) (IMAGADAF)
Keywords
Where Liyang Semiconductor is headquartered
LocationHeadquarters
- HQ city
- Taizhou
- HQ country
- China
- HQ region
- Asia
Offices2 records
Markets served
Liyang Semiconductor business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Technology or R&D, Operations, Personnel, Supply Chain, Infrastructure, Marketing or Sales
Revenue model
- Discrete Semiconductor Device Sales: Liyang Semiconductor generates revenue primarily through the design, manufacturing, and sale of discrete power semiconductor components including TVS diodes, ESD protection devices, gas discharge tubes, thyristor surge suppressors, and rectifier diodes. Revenue is one-time product sale based, with repeat orders from established customer relationships in automotive, industrial, and consumer electronics sectors. The company operates as an IDM, controlling both design and manufacturing.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Pay-as-you-go | B2B direct sales with sample request and order system |
Go-to-market motion1 record
Distribution channels2 records
Marketing channels3 records
Liyang Semiconductor product offering
Product offeringCore offering
Liyang Semiconductor is an Integrated Device Manufacturer (IDM) that designs, manufactures, packages, and tests discrete power semiconductor protection components, including Transient Voltage Suppression (TVS) diodes, Electrostatic Discharge (ESD) protection diodes, Gas Discharge Tubes (GDT), Glass Discharge Tubes (SPG), Thyristor Surge Suppressors (TSS), rectifier diodes, and silicon-controlled rectifiers (SCRs). The company serves automotive, industrial, communications, photovoltaic, security, consumer appliance, and lighting applications with AEC-Q101 qualified automotive-grade variants and offers over 3,000 automotive-certified products across 200+ package options.
Product overview
Liyang Semiconductor (里阳半导体) is an IDM (Integrated Device Manufacturer) enterprise established in August 2018, specializing in the design and manufacturing of power semiconductor devices. The company's product portfolio centers on circuit protection components including Transient Voltage Suppression (TVS) diodes available in automotive-grade (AEC-Q101 compliant), industrial-grade, and high-current variants; Electrostatic Discharge (ESD) protection diodes in single and multi-channel configurations; Gas Discharge Tubes (GDT), Glass Discharge Tubes (SPG), and Thyristor Surge Suppressors (TSS); Power rectifier diodes; and Silicon Controlled Rectifiers (Thyristors/SCR). The company serves applications across new energy vehicles, network communications, security surveillance, home appliances, photovoltaic energy storage, industrial power supplies, and lighting systems.
Differentiator
Problem solved
Functional benefit
Products and services
- Transient Voltage Suppression Diodes (TVS) TVS diodes that clamp voltage spikes and surge events to safe levels, protecting sensitive electronic circuits. Available in automotive-grade (AEC-Q101 qualified), industrial-grade, and high-surge variants for OEMs and Tier 1/2 suppliers across automotive, industrial, and consumer applications.
- Electrostatic Discharge Protection Diodes (ESD) ESD protection diodes that protect sensitive electronic components from static electricity damage, with low-capacitance variants for high-speed data line applications. Sold to electronics manufacturers for consumer, communications, and industrial products.
- Discharge Tubes (GDT/SPG/TSS) Gas Discharge Tubes (GDT), Glass Discharge Tubes (SPG), and Thyristor Surge Suppressors (TSS) that provide overvoltage protection for telecom lines, base station equipment, and power systems. Sold to telecom equipment manufacturers, network infrastructure providers, and surge protection device integrators.
- Rectifier Diodes Power rectifier diodes that convert AC to DC in electronic and power supply applications, with current ratings from 10A to 200A and voltage ratings up to 2000V. Sold to power supply manufacturers, motor drive makers, and industrial equipment OEMs.
- Silicon Controlled Rectifiers (Thyristor/SCR) Silicon Controlled Rectifiers (Thyristor/SCR) used for power control in AC/DC motor control, dimming, and voltage regulation applications. Sold to industrial control, motor drive, and lighting equipment manufacturers.
Quantifiable outcome
- 27.87% year-over-year revenue growth reported in Q1 2026
- +3 more outcomes
Companies that use Liyang Semiconductor
Customer profileSegments7 records
Ideal customer profiles4 records
Liyang Semiconductor technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature4 records
Liyang Semiconductor partnerships and signals
Strategic signalScale indicators5 records
Recent moves6 records
Expansion highlights5 records
Liyang Semiconductor competitors and assessment
Company assessmentDirect peers
- Littelfuse: Global leader in circuit protection with directly overlapping TVS, ESD, GDT, TSS, and thyristor surge suppressor product lines. Littelfuse is the most directly comparable peer given its dominant position in automotive and industrial protection devices and IDM-style operations.
- Vishay Intertechnology: Major discrete semiconductor manufacturer with extensive TVS, rectifier diode, and power module portfolios serving automotive, industrial, and consumer markets. Closely matches Liyang's discrete protection device focus and IDM-style vertical integration.
- Bourns: Circuit protection specialist offering TVS diodes, GDTs, thyristors, and resettable fuses for automotive, telecom, and industrial applications. Direct competitor in the same discrete protection product categories.
- Diodes Incorporated: Discrete semiconductor manufacturer with strong TVS, rectifier, and protection IC portfolios serving automotive, industrial, and consumer markets. Comparable IDM-style business model and product overlap.
- Nexperia: Large discrete semiconductor IDM with broad TVS, ESD, and rectifier portfolios for automotive and industrial customers. Comparable IDM model and direct product overlap in discrete protection devices.
- BrightKing (君耀电子): China-based discrete protection device manufacturer with TVS, ESD, GDT, TSS, and thyristor products. Closest domestic Chinese peer with directly comparable product line and target markets.
- UN Semiconductor (优恩半导体): Chinese competitor specializing in TVS, ESD, GDT, TSS, and other circuit protection discrete semiconductors. Comparable IDM-style operations and direct overlap with Liyang in automotive and industrial verticals.
- Prisemi (芯导科技): Chinese fabless/design-house semiconductor company with TVS, ESD, and power protection products targeting consumer, industrial, and telecom applications. Comparable in product line though with a fabless model rather than IDM.
Broad incumbents
- STMicroelectronics: Global IDM with TVS, ESD, and protection IC offerings as part of a much broader automotive and industrial portfolio. Larger and more diversified than Liyang but competes directly in discrete protection for automotive customers.
- onsemi (ON Semiconductor): Broad-line IDM with discrete protection devices (TVS, Zener, ESD) alongside power, analog, and sensing products for automotive and industrial customers. Overlaps with Liyang on automotive-grade discrete protection parts.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat4 records
Key risks6 records
Key highlights6 records
Customer concentration
Liyang Semiconductor compliance and trust
Trust signalCompliance4 records
Liyang Semiconductor financial estimates
Financial estimateRevenue estimate
Valuation estimate
Liyang Semiconductor leadership team
Management profileNumber of profiles
Liyang Semiconductor funding detail
Funding detailFunding overview
Funding rounds1 record
Investors1 record
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Liyang Semiconductor M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Liyang Semiconductor
What does Liyang Semiconductor do?
Liyang Semiconductor is an Integrated Device Manufacturer (IDM) that designs, manufactures, packages, and tests discrete power semiconductor protection components, including Transient Voltage Suppression (TVS) diodes, Electrostatic Discharge (ESD) protection diodes, Gas Discharge Tubes (GDT), Glass Discharge Tubes (SPG), Thyristor Surge Suppressors (TSS), rectifier diodes, and silicon-controlled rectifiers (SCRs). The company serves automotive, industrial, communications, photovoltaic, security, consumer appliance, and lighting applications with AEC-Q101 qualified automotive-grade variants and offers over 3,000 automotive-certified products across 200+ package options.
Is Liyang Semiconductor a public or private company?
Liyang Semiconductor is a private company. It is classified as venture growth investor backed and is currently operating.
When was Liyang Semiconductor founded?
Liyang Semiconductor was founded in 2018. It employs 11 to 50 people.
Where is Liyang Semiconductor based?
Liyang Semiconductor is headquartered in Taizhou, China, in the Asia region.
How does Liyang Semiconductor make money?
One revenue line is on record: discrete Semiconductor Device Sales.
Who are Liyang Semiconductor's main competitors?
Direct peers on record are Littelfuse, Vishay Intertechnology, Bourns, Diodes Incorporated, Nexperia, BrightKing (君耀电子), UN Semiconductor (优恩半导体) and Prisemi (芯导科技). Broad incumbents are STMicroelectronics and onsemi (ON Semiconductor).
Does Liyang Semiconductor have an API?
No public API is recorded for Liyang Semiconductor.
What industry is Liyang Semiconductor in?
Liyang Semiconductor's product category is Power Semiconductor Discrete Devices. Its primary akta.pro industry code is HDAHAAAI, Automotive & Industrial-Grade IDMs, with a secondary code of IMAGAJAE, Semiconductors for Industrial Control & Power (MCUs, DSPs, FPGAs, ASICs, IGBTs, MOSFETs, diodes). Its NAICS code is 33441 and its SIC code is 3674.