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Core Material Solutions
Material Overview
What Is UPGM308 Material for IGBT Applications?
UPGM308 is a high-performance glass-fiber-reinforced thermosetting composite laminate material, widely recognized as a critical substrate and insulation component in the fabrication of Insulated Gate Bipolar Transistor (IGBT) modules for power applications. With the global acceleration of electrification — spanning electric vehicles (EVs), renewable energy infrastructure, industrial automation, and ultra-high-voltage (UHV) power transmission — UPGM308 has emerged as one of the most technically demanding and commercially strategic materials in the power electronics supply chain.
🔬 Material Composition and Technical Properties
The UPGM308 designation refers to a specific grade within the epoxy glass cloth laminate family, manufactured using woven glass fiber reinforcement impregnated with a high-purity epoxy resin system. The cured composite exhibits a suite of properties that make it indispensable for IGBT power module applications:
Dielectric Strength: UPGM308 delivers dielectric strength values typically exceeding 20 kV/mm, ensuring robust electrical insulation between high-voltage copper conductors and heat-sink baseplate structures in IGBT modules operating at 600V–6500V blocking voltages.
Thermal Performance: With a glass transition temperature (Tg) of 130°C–150°C and continuous operating capability beyond 130°C, UPGM308 withstands the thermal cycling stress inherent in power converter duty cycles — including traction inverters and grid-tied converters where junction temperatures routinely exceed 125°C.
Mechanical Rigidity: A flexural strength exceeding 350 MPa and a high modulus of elasticity ensure dimensional stability under thermomechanical stress, preventing delamination or warpage during wire bonding, soldering, and long-term thermal cycling.
Flame Retardancy: UPGM308 achieves UL94 V-0 classification, meeting the stringent fire safety requirements for power electronics in railway traction systems, wind turbine converters, and industrial drives.
Low Moisture Absorption: The material demonstrates very low moisture uptake (<0.5%), which is critical for maintaining stable dielectric properties in humid operating environments such as marine and outdoor renewable energy installations.
Why Choose UPGM308
Outstanding Performance Characteristics
High Dielectric Strength
Exceeds 20 kV/mm, providing reliable insulation for IGBT modules up to 6500V blocking voltage applications.
Thermal Stability
Tg of 130–150°C sustains structural integrity through intense thermal cycling in traction and industrial converters.
Mechanical Rigidity
Flexural strength >350 MPa prevents delamination and warpage under wire bonding and soldering stresses.
UL94 V-0 Rated
Halogen-containing and halogen-free grades available with highest flame retardancy for safety-critical power systems.
Market Intelligence
Commercial & Industrial Landscape for UPGM308 in Power Applications
📊 Global IGBT Market Driving Material Demand
The global IGBT market was valued at approximately USD 7.2 billion in 2023 and is projected to reach USD 14.5 billion by 2031, growing at a compound annual growth rate (CAGR) of approximately 9.1%. This robust growth is being propelled by several macroeconomic and technological trends that directly expand demand for high-quality IGBT substrate materials like UPGM308:
Electric Vehicle (EV) Proliferation: Each EV traction inverter requires between 6 and 24 IGBT modules. With global EV production forecast to exceed 40 million units annually by 2030, the downstream demand for UPGM308 substrates is enormous. Automotive-grade IGBT modules require substrate materials that comply with IATF16949:2016 quality management standards — a certification held by leading manufacturers such as Sichuan EM Technology Co., Ltd.
Renewable Energy Expansion: Wind turbines, photovoltaic inverters, and grid-scale battery energy storage systems (BESS) all utilize IGBT-based power converters at the multi-megawatt scale. Offshore wind converters operating in corrosive marine environments place particular emphasis on low moisture absorption and high dielectric reliability — characteristics squarely addressed by UPGM308.
Ultra-High Voltage (UHV) Transmission: China's State Grid and global TSOs are deploying HVDC (High Voltage Direct Current) transmission projects requiring IGBT valves at ±800 kV and beyond. The reliability requirements for insulation materials in these applications are among the most demanding in the power industry.
🏭 Industrial Applications and End-Use Sectors
UPGM308 material for IGBT applications touches virtually every segment of the modern power economy. The following sectors represent the highest-volume and highest-growth end markets:
| Sector | IGBT Application | UPGM308 Role | Growth Driver |
|---|---|---|---|
| Electric Vehicles | Traction Inverters, OBC, DC-DC | Module substrate insulation | EV adoption, carbon neutrality targets |
| Wind Power | Full-power converters | Baseplate insulation laminates | Offshore wind expansion |
| Rail Traction | Traction drives, auxiliary converters | High-reliability insulation substrate | High-speed rail network growth |
| Industrial Drives | Variable frequency drives (VFDs) | Power module packaging material | Industrial automation, Industry 4.0 |
| Smart Grid / UHV | HVDC valves, STATCOM | High-voltage insulation laminate | Grid modernization investments |
| 5G Infrastructure | Power amplifiers, base station PSUs | PCB substrate-adjacent insulation | 5G rollout worldwide |
By the Numbers
IGBT Power Market at a Glance
Deep-Dive Application Analysis
UPGM308 IGBT Power Application Scenarios
EV Traction Inverters
UPGM308 substrates provide the electrical isolation between high-current copper clips and the aluminum heat sink in automotive IGBT modules rated 650V–1200V for EV powertrains.
Wind Turbine Converters
In full-power 6MW–15MW offshore converters, UPGM308 endures constant thermal cycling and salt-fog conditions, maintaining dielectric integrity over 20+ year service lives.
Railway Traction Systems
High-speed rail and metro traction drives demand IGBT modules with IEC 61373 vibration compliance — UPGM308's rigid laminate structure provides the required mechanical robustness.
Solar PV Inverters
String and central inverters for utility-scale solar plants use IGBT modules where UPGM308 ensures decades of reliable insulation in high UV and temperature swing environments.
Industrial Motor Drives
VFDs for pumps, fans, and compressors in chemical, oil & gas, and manufacturing sectors rely on UPGM308-based IGBT modules for continuous 24/7 duty cycle reliability.
Battery Energy Storage
Grid-scale BESS converters operating in bidirectional charge/discharge cycles require IGBT modules with ultra-reliable insulation to ensure long calendar life and low O&M costs.
UHV HVDC Transmission
±800 kV HVDC valve stacks use thousands of IGBT modules in series, where UPGM308 insulation must sustain extraordinary partial discharge resistance and long-term stability.
5G & Data Center Power
Uninterruptible power supplies (UPS) and telecom rectifiers in 5G base stations and hyperscale data centers leverage IGBT efficiency gains enabled by UPGM308 substrates.
Future Outlook
Development Trends for UPGM308 in Power Electronics
🚀 Toward Silicon Carbide (SiC) Co-Existence
While SiC MOSFETs are increasingly displacing IGBTs in certain sub-1200V EV applications, IGBT technology retains dominance in medium-voltage (1700V–6500V) industrial and traction segments, where cost-per-ampere competitiveness and proven long-term reliability remain decisive. Accordingly, demand for UPGM308 substrates is forecast to remain robust through 2035 and beyond.
Furthermore, hybrid modules combining SiC diodes with IGBT switches — a growing architectural trend — still require UPGM308-grade insulation laminates, meaning that the material's relevance is not diminished by the SiC transition but evolves alongside it.
🌿 Halogen-Free and Eco-Friendly Formulations
Regulatory pressure from REACH, RoHS, and China's GB standards is driving laminate manufacturers to develop halogen-free UPGM308 variants that maintain V-0 flammability ratings using phosphorus-based or nitrogen-based flame retardants. EMT's expertise in phosphorus-containing epoxy resin systems positions the company at the forefront of this transition, enabling UPGM308 laminates that satisfy both environmental mandates and the demanding performance criteria of power module assembly.
🏗️ Localization and Supply Chain Security
Geopolitical disruptions and supply chain vulnerabilities exposed during the 2020–2022 period have accelerated "China-for-China" procurement strategies among domestic IGBT module manufacturers such as BYD, CRRC, and NARI. This trend strongly favors domestic suppliers of certified UPGM308 materials — particularly those with ISO9001, IATF16949:2016, and ISO14001 certification — as OEMs seek to reduce dependence on imported laminate substrates.
🔧 Advanced Processing Compatibility
Modern IGBT module assembly techniques — including direct copper bonding (DCB), active metal brazing (AMB), and sintered silver die-attach — are placing new demands on substrate materials. Next-generation UPGM308 formulations are being developed with improved surface planarity, tighter thickness tolerances, and enhanced adhesion properties to support these advanced packaging processes, enabling higher power density modules with superior thermal performance.
Our Philosophy
Vision & Mission
To Become a World-renowned Innovative New Material Product and Service Supplier.
To Provide Safe and Environment-friendly New Material Solution for the Society, Create a Better New Life.
About the Manufacturer
— COMPANY PROFILE
Sichuan EM Technology Co., Ltd., established in 1966 and headquartered in Mianyang, Sichuan, south-west part of China, as the 1st public company of electrical insulation material manufacturer in China and National Insulation Material Engineering Technical Research Center, we have comprehensive R&D and manufacturing capabilities to manufacture polyester films, halogen-free polycarbonate and polypropylene films, capacitor polypropylene films, rigid & flexible laminates, mica tapes, thermosetting composites, precision coating product, molding compounds (DMC, SMC), functional PET chips (FR PET chip, anti-bacterial PET chip, etc.), impregnating varnishes and wire enamels, PVB resin & interlayers, special resin (esp. for CCL), etc. We are certified by ISO9001, IATF16949:2016, ISO10012, OHSAS18001 and ISO14001.
We export to the worldwide markets in varied industries, including power generation equipment, UHV power transmission, smart grid, new energy, rail transportation, consumer electronics, 5G communication, and panel display. EMT has established long-term and stable cooperative partnerships with all our partners across the world, whilst providing strong supports in manufacturing services to original equipment manufacturers (OEMs).
Manufacturing Sites
- Mianyang Site
- Chengdu Site
- Sichuan EMT New Material
- Central China Site
- Eastern China Site
- Shandong Dongrun New Material
- Shandong EMT New Material
- SNTON Optical Material
Group Structure
- Sichuan Dongfang Insulation Material Co., Ltd.
- Sichuan EMT New Material Co., Ltd.
- Jiangsu EMT New Material Co., Ltd.
- Shandong Shengtong Optical Materials Technology Co., Ltd.
- EMT Chengdu New Materials Technology Co., Ltd.
- Chengdu D&C Pharma. Technology Co., Ltd.
- Sichuan EMT Aviation Equipment Co., Ltd.
- Henan Huajia New Material Technology Co., Ltd.
- Shandong EMT New Material Co., Ltd.
- Shandong Dongrun New Material Co., Ltd.
- Sichuan EM Functional Film Materials & Technology Co., Ltd.
- Sichuan EM Technology (Chengdu) International Trading Co., Ltd.
Our Journey
Milestone
2024
Meishan base established. Chengdu second headquarters officially completed.
2023
Shandong Aimonte awarded "Little Giant with Specialization" in Shandong Province. Aimonte Aviation awarded National Second-Class Confidentiality Qualification. Henan Huajia awarded "Gazelle" Enterprise in Henan Province.
2022
Established Chengdu Glenson Health Technology Co., Ltd., and Sichuan EM Technology (Chengdu) International Trading Co., Ltd.
2021
Established Sichuan EM Functional Film Materials & Technology Co. Ltd., and Sichuan EMT New Material Co., Ltd.
2020
Wholly-owned acquired Shandong Shengtong Optical Materials Technology Co., Ltd., and established Shandong EMT New Material Co., Ltd.
2018
Established EMT Chengdu New Material Co., Ltd., and Chengdu Drug and Cancer Pharmaceutical Technology Co., Ltd.
2015
Acquired 51% of total equity of Taihu Jinzhang Science & Technology Co., Ltd.
2014
Acquired 62.5% of total equity of Henan Huajia New Material Technology Co., Ltd.
2012
Established Jiangsu EMT New Material Co., Ltd.
2011
Listed on the Shanghai A-share market, the first electrical insulation materials industry listed company in China.
2007
Renamed Sichuan EM Technology Co., Ltd.
2005
Wholly-owned acquisition by Guangzhou Gaoking Group.
1994
Restructured into Sichuan Dongfang Insulation Materials Co., Ltd., and established Sichuan EM Enterprise Group Company.
1966
EMT's predecessor, state-owned Dongfang Insulation Material Factory relocated from Harbin to Sichuan.
Complete Product Range for Power & IGBT Applications
