RIR Power Electronics

What RIR Power Electronics does

RIR Power Electronics Limited (formerly Ruttonsha International Rectifier Limited) is a 55+ year-old Indian high-power semiconductor manufacturer, founded in 1969 with technical collaboration from International Rectifier Corporation (USA). The company designs, manufactures, and markets silicon and silicon carbide (SiC) power semiconductor devices, power modules, and integrated power electronics systems for mission-critical applications across railways, defense, electric vehicles, power generation, and industrial sectors. It claims to be India's only vertically integrated SiC semiconductor manufacturer and the only private-sector company manufacturing semiconductors from the diffusion stage, with proven capability in devices rated up to 20,000V and 12,000A.

The product portfolio spans Si Phase Control Thyristors (16A to 5,000A, up to 5,200V), Inverter Grade Thyristors (40A to 3,370A), Standard Recovery Diodes (12A to 12,000A, up to 6,000V), Fast Recovery Diodes, 1200V SiC MOSFETs, 1200V SiC Merged-PiN Schottky (MPS) Diodes, High Voltage Modules (up to 6,500V), IGBT modules (as authorized StarPower distributor), battery chargers (up to 3,000A DC), AC voltage regulators, DSP-based Universal Control Cards, and custom application-specific rectifier systems. The company also developed India's first indigenous 25 kV–120 kA capacitor discharge high-voltage thyristor switch for defense and medical applications, and holds proprietary SiC IP through an exclusive technology transfer from Sicamore Semi (USA).

Revenue is generated primarily through B2B direct enterprise sales to government and large industrial customers (Indian Railways, BARC, NFC, Adani Power, Hindalco, NTPC) and through a global distribution network led by Richardson Electronics covering 14+ countries, complemented by regional distributors in India, USA, UK, Canada, and Australia. FY26 standalone revenue reached Rs 90.87 crore (up 5.41% YoY from Rs 86.21 crore), with PAT of Rs 6.72 crore and adjusted EBITDA margin of 11.64%. The company is investing Rs 618 crore in a vertically integrated SiC manufacturing facility in Bhubaneswar, Odisha (target completion December 2027) and is publicly listed on BSE (since 1986) and NSE (since July 16, 2026), with market capitalization of approximately Rs 1,257 crore.

Name

RIR Power Electronics

Legal name

RIR Power Electronics Ltd.

Website

https://rirpowersemi.com

Company type

Public

Founded year

1969

Operating status

Operating

Headcount range

101–250 employees

Short description

RIR Power Electronics is an Indian high-power semiconductor manufacturer producing silicon and silicon carbide thyristors, diodes, MOSFETs, power modules, and custom rectifier systems for railways, defense, EVs, power generation, and industrial customers across 20+ countries.

Ownership category

akta.pro rank

Product category

Power Semiconductors

NAICS

Semiconductor and Other Electronic Component Manufacturing (33441), Power, Distribution, and Specialty Transformer Manufacturing (335311), Electrical Equipment Manufacturing (3353)

SIC

Semiconductors & Related Devices (3674), Power, Distribution & Specialty Transformers (3612)

akta.pro industry

PRIMARYHDAHAHAH

Power Modules (IGBT/MOSFET/SiC/GaN Modules)

Hardware, Technology & Telecom/Semiconductors & Electronic Components/Discrete Semiconductors (Power & Signal)

SECONDARYHDAHAAAK

High-Voltage, Power Discretes & Modules (IGBT/MOSFET/SiC/GaN)

Hardware, Technology & Telecom/Semiconductors & Electronic Components/Integrated Device Manufacturers (IDMs)

SECONDARYHDAHAHAG

Wide-Bandgap Power Devices (SiC/GaN Discretes)

Hardware, Technology & Telecom/Semiconductors & Electronic Components/Discrete Semiconductors (Power & Signal)

SECONDARYHDAHAHAF

Thyristors (SCRs/Triacs/Diacs)

Hardware, Technology & Telecom/Semiconductors & Electronic Components/Discrete Semiconductors (Power & Signal)

SECONDARYIMACAJAE

Automotive Power Electronics & Inverters/Converters Manufacturing

Industrials, Manufacturing & Construction/Automotive & Mobility Manufacturing/Automotive Electrical & Electronics Manufacturing (ECUs/Sensors/Wiring/Lighting)

Keywords

• High-power semiconductors
• Silicon carbide devices
• Power thyristors
• Power electronics systems
• Semiconductor fabrication

Headquarters

HQ city

Mumbai

HQ country

India

HQ region

Asia

Offices3 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Power Semiconductor Devices: Sale of discrete semiconductor devices including Si thyristors (Phase Control, Inverter Grade), Si diodes (Standard Recovery, Fast Recovery), SiC MOSFETs, SiC diodes, and IGBTs. Revenue is primarily hardware-based with one-time sale per unit. Revenue grew 5.41% YoY to Rs 90.87 crore in FY26.
2. Power Electronics Systems and Assemblies: Sale of power modules (thyristor-diode modules, high voltage modules, diode bridge rectifiers, diode bridge modules), equipment (battery chargers, AC voltage regulators, universal control cards, stacks and assemblies). Mix of standard products and application-specific configurations.
3. Custom/Application-Specific Rectifier Systems: Design and supply of custom rectifier systems for specific applications including railways (DC to AC conversion for EMU coaches), defense, nuclear (NFC Hyderabad), power plants (Adani Power), hydrogenation (Green Hydrogen, Egypt), and industrial processes (BARC, Hindalco). Revenue recognized upon delivery and commissioning.

Pricing tiers

Go-to-market motion3 records

Distribution channels6 records

Marketing channels6 records

Core offering

RIR Power Electronics designs and manufactures high-power semiconductor devices (Si phase control and inverter grade thyristors, standard and fast recovery diodes, SiC MOSFETs, SiC MPS diodes, IGBT modules) and assembled power electronics systems (battery chargers, AC voltage regulators, stack assemblies, DSP-based universal control cards, custom rectifiers). The company's products serve industrial power conversion, railway electrification, defense, electric vehicles, power generation, and renewable energy applications across 20+ countries, with operations spanning semiconductor fabrication in Halol, Gujarat and a forthcoming SiC facility in Bhubaneswar, Odisha.

Product overview

RIR Power Electronics offers a comprehensive portfolio of high-power semiconductor solutions organized across four main product lines: (1) Silicon Thyristors & Diodes — Phase Control Thyristors (stud and capsule type, 16A–5000A), Inverter Grade Thyristors (40A–3370A), Standard Recovery Diodes (12A–12000A), and Fast Recovery Diodes (12A–3200A); (2) SiC MOSFETs & Diodes — 1200V Silicon Carbide MOSFETs and MPS Diodes for EVs, renewables, data centers, and industrial applications; (3) Power Modules, IGBTs & IPMs — High Voltage Modules (up to 6500V), Diode Bridge Rectifiers, Diode Bridge Modules, StarPower IGBT Modules (as authorized distributor), and Power Rectifiers; (4) Equipment — Battery Chargers (up to 3000A), Stack & Assemblies (thyristor/diode stacks, welding stacks, water-cooled assemblies), AC Voltage Regulators (10–440VAC), and Universal Control Cards (DSP-based with CAN/RS-485/USB interfaces). Additionally, the company developed India's first indigenous 25kV–120kA capacitor discharge thyristor switch for defense and medical applications. The portfolio targets mission-critical sectors including railways, defense, electric vehicles, power generation, and industrial manufacturing.

Differentiator

Problem solved

Functional benefit

Products and services

• Phase Control Thyristors (SCR) Silicon-controlled rectifier (SCR) devices for phase-controlled rectification, soft starting, AC switching, motor control, UPS, welding, high-power inversion, battery charging, and electrolysis. Range includes stud type (16A to 500A, up to 5200V) and capsule type (323A to 5000A). Targeted at industrial power conversion, motor control, UPS, welding, and electrolysis applications.
• Inverter Grade Thyristors Fast-switching thyristor devices for inverters, choppers, induction heating, and force-commutated converters. Available in stud type (40A to 300A, 200V to 1200V) and capsule type (300A to 3370A, 200V to 2500V). Targeted at inverter, chopper, induction heating, and force-commutated converter applications.
• Standard Recovery Diodes Diffused-junction rectifier diodes in normal and reverse polarity configurations. Forward current ratings from 12A to 12,000A and voltage ratings from 200V to 6000V. Applications include welding, alternator/generator motor control, high-power inversion, battery charging, electroplating, traction, and electrolysis.
• Fast Recovery Diodes High-speed rectifier diodes in stud and capsule types for applications requiring rapid switching. Stud type covers 12A to 200A at 200–1200V; capsule type covers 430A to 3200A at 400–4500V. Targeted at high-speed rectification applications.
• 1200V SiC MOSFETs Silicon Carbide Metal-Oxide-Semiconductor Field-Effect Transistors for high-efficiency and high-reliability power applications including EV onboard chargers, traction inverters, MW charging systems, solar inverters, energy storage, UPS, motor drives, and industrial equipment. Targeted at EV, renewable energy, data center, and industrial power conversion applications.
• SiC MPS (Merged-PiN Schottky) Diodes Silicon Carbide Merged-PiN Schottky diodes combining Schottky and PiN structures for improved efficiency, high-voltage blocking capability, and thermal robustness over traditional SiC Schottky Barrier Diodes. Target EVs, data centers, renewable energy, industrial drives, aerospace, defense, and green hydrogen.
• 1200V SiC Diodes (Schottky Barrier Diodes) 1200V Silicon Carbide Schottky Barrier Diodes with current ratings from 2A to 60A, manufactured in partnership with Pro Asia Semiconductor Corporation (PASC) Taiwan. Targeted at EVs, data centers, renewable energy, industrial drives, and defense applications.
• IGBT Modules (StarPower Products) Authorized distribution of StarPower IGBT modules including low-power, medium-power, and high-power modules; SiC modules; discrete IGBTs; and Intelligent Power Modules (IPMs) for Trench FS IGBT, NPT Ultra Fast IGBT, and various circuit structures (Half Bridge, PIM, Single Switch). Voltage ratings from 650V to 1700V and current ratings from 10A to 900A. Targeted at industrial motor drives, UPS, solar inverters, and EV charging applications.
• High Voltage Modules High-voltage diode and thyristor modules (IRKHT, IRKT, IRKE, IRKD, IRKH series) with current ratings from 115A to 1100A and maximum voltage up to 6500V. Applications include battery chargers, welders, plating equipment, and windmills.
• Diode Bridge Rectifiers Three-phase and single-phase bridge rectifiers with two current ratings (25A and 35A for three-phase; 25A, 35A, and 50A for single-phase) and voltage classes from 200V to 1600V. Used in DC power supplies, welding inverters, drives, and rectifiers.
• Diode Bridge Modules Single-phase and three-phase diode bridge modules including single-phase half-controlled bridge modules and ultra-fast recovery diode modules. Current ratings from 25A to 400A; voltage ratings from 200V to 1800V. Targeted at industrial power conversion and rectifier applications.
• Power Modules (Thyristor-Diode, Non-Isolated, Isolated Water Cooled) Power modules in Thyristor-Thyristor, Diode-Diode, and Thyristor-Diode configurations, including non-isolated 3-thyristor and isolated water-cooled modules. Used in power electronics assemblies and industrial systems.
• Battery Chargers Thyristorized industrial battery chargers including Float cum Boost Chargers (FCBC), Float and Boost Chargers, and dual configurations. Supports lead acid, NiCd, VRLA, Plante, and automotive batteries. Output current up to 3000A DC. Targeted at industrial battery charging applications.
• Stack & Assemblies (Rectifier and Thyristor Stacks) Pre-configured thyristor stacks (B6C), diode stacks (B6U), welding rectifier stacks, and water-cooled assemblies for industrial power applications. Various current and voltage classes for different duty cycles. Targeted at industrial power conversion, welding, and water-cooled assembly applications.
• AC Voltage Regulator Thyristorized three-phase AC voltage regulator stack with full seamless control of resistive loads using burst firing and phase angle firing. Voltage range 10 to 440 VAC; current range 50 to 200 Amps AC. Used in furnaces, ovens, dryers, and HVAC air curtain applications.
• Universal Control Card (UCC) DSP-based control card (Texas Instruments TMS320F28335) with multiple I/O options including USB, RS-485, CAN Bus, 16 analog inputs, 4 analog outputs, 9 digital inputs, 4 digital outputs, and up to 12 programmable PWM channels. Supports local, remote, and BMS control. Targeted at power electronics control applications.
• Power Rectifiers High-power rectifier systems for industrial applications. Targeted at industrial power conversion, electrolysis, hydrogenation, electroplating, traction, and custom rectifier applications.
• 25 kV–120 kA High-Voltage Thyristor Switch India's first indigenous 25 kV–120 kA capacitor discharge high-voltage thyristor switch using a 125mm SCR with up to 8kV blocking voltage. Developed and tested at the Halol, Gujarat facility. Designed for defense systems, advanced medical technologies, and directed energy applications.
• 125mm 5kV SCR Thyristors (Overseas Order Edition) Advanced 125mm 5kV SCR thyristors for high-power press-pack applications, designed for a leading Class I Electrical EPC contractor. Features 125mm diameter silicon chip in press-pack construction with high mechanical reliability and optimized lifetime control. Handles very high peak currents and high di/dt pulses for short durations.

Quantifiable outcome

• SiC inverter efficiency up to 99.1% vs 97.1% for silicon inverters
• +3 more outcomes

Named customers10 records

Segments8 records

Ideal customer profiles6 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature8 records

Partnerships

Five partnerships are on record, tiered core and minor.

• Silicon University, OdishacoreStrategic or Co-development Partner · 1 November 2025Industry-academia research partnership under MoU signed November 2025. Joint research papers selected for IEEE MWSCAS 2026 covering SiC MOSFET vs IGBT comparisons for EV traction inverters and 4H-SiC Implant Epitaxy MOSFET designs for high-voltage applications. Collaboration focuses on next-generation SiC semiconductor devices and high-voltage power electronics technologies.
• Pro Asia Semiconductor Corporation (PASC), TaiwancoreTechnology or Integration · 5 June 2025Strategic contract fab partnership for SiC diode manufacturing at PASC's state-of-the-art fabrication facility in Taiwan. Enabled successful production expansion and shipment of 1200V SiC diodes (2A to 60A) to India and global customers. Scale-up achieved with technical support from Vortex Semi and PASC. Serves as interim manufacturing while RIR's Odisha fab is being built.
• Sicamore Semi (USA)coreTechnology or Integration · 17 October 2024Comprehensive technology transfer agreement signed on October 17, 2024, granting RIR Power exclusive rights to manufacture, market and commercialize SiC diodes, MOSFETs and IGBTs using Sicamore's proven IP and process knowhow. Originally developed for 4-inch wafers, successfully adapted for 6-inch wafer production. This partnership is foundational to RIR's SiC strategy.
• Richardson Electronics (Global)coreChannel Partner/ Reseller/ DistributorGlobal distribution partner with dedicated power semiconductor division (rellpower.com). Offices in USA, UK, Japan, Singapore, South Korea, Taiwan, Thailand, China, Australia, India, Mexico, Brazil, Vietnam. Authorized distributor reselling RIR's full product range including SiC devices. Richardson Electronics has also placed purchase orders for SiC devices for commercial, industrial and defence sectors.
• StarPower Semiconductor Ltd.minorChannel Partner/ Reseller/ DistributorRIR became distributor of StarPower IGBT Modules for India starting 2019. RIR resells StarPower IGBT modules (Low Power, Medium Power, High Power, SiC Modules, Discrete IGBTs, Intelligent Power Modules) as an authorized distributor.

Scale indicators10 records

Recent moves8 records

Expansion highlights6 records

Broad incumbents

• STMicroelectronics: Global semiconductor incumbent with leading SiC MOSFET portfolio (SiC products for Tesla, Renault, etc.) and broad power discrete business. Comparable to RIR across Si thyristors, SiC MOSFETs, IGBT modules, and power modules.
• ON Semiconductor (onsemi): Major power discrete and SiC MOSFET supplier with strong automotive and industrial presence. Comparable to RIR's SiC product line and broad discrete portfolio, including thyristor and diode families.
• Infineon Technologies: World's largest power semiconductor manufacturer offering IGBT, SiC, and Si-based discretes across EVs, renewables, industrial, and rail. Closest peer to RIR's full product portfolio of thyristors, diodes, IGBTs, and emerging SiC.
• Hitachi Energy: Major supplier of high-voltage power electronics, HVDC valves, and grid-connected thyristor/diode systems. Highly comparable to RIR's HVDC-adjacent thyristor, high-voltage module, and grid infrastructure offerings.
• ROHM Semiconductor: Japanese SiC pioneer (SiC MOSFETs, SBDs, power modules) with broad discrete semiconductor portfolio serving EVs, industrial, and renewables. Comparable to RIR's SiC MOSFET, MPS diode, and discrete semiconductor portfolio.
• Toshiba Electronic Devices & Storage: Producer of discrete power semiconductors including IGBTs, MOSFETs, diodes, and thyristors for industrial, rail, and automotive applications. Directly comparable across RIR's core silicon discrete and power module families.
• Mitsubishi Electric: Global power module leader with strong SiC and IGBT module portfolio serving rail, EVs, and industrial drives. Comparable to RIR's high-power modules, IGBT modules, and emerging SiC module strategy.

Direct peers

• Vishay Intertechnology: Manufacturer of discrete semiconductors including MOSFETs, diodes, rectifiers, and thyristors across industrial, automotive, and military markets. Closely aligned with RIR's silicon thyristor, diode, and bridge rectifier portfolio.
• Wolfspeed: Pure-play SiC semiconductor leader producing SiC MOSFETs, diodes, and power modules targeting EVs, renewables, and industrial applications. Directly comparable to RIR's SiC MOSFET and diode roadmap, though at vastly larger scale.

Emerging players

• StarPower Semiconductor: Chinese IGBT module manufacturer (Low/Medium/High Power, SiC modules, IPMs) for which RIR serves as authorized India distributor. Closely tied commercial partner and partial competitor in IGBT modules.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks7 records

Key highlights7 records

Customer concentration

• Xx.com/RIR_Power

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles9 records

Subsidiaries1 record

Funding overview

Funding rounds

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 RIR Power Electronics