3RLab

What 3RLab does

3RLab Corporation (쓰리알랩 주식회사) is a privately held South Korean manufacturer founded in June 2000, headquartered in Anyang City, Gyeonggi-do, with a second factory in Gunpo City. The company positions itself as a "Total High Voltage System & Solutions Manufacturer," producing components engineered for high-voltage, high-energy, and high-frequency applications across a voltage range of 5kV to 10,000kV. With 11–50 employees and no external investors on record, 3RLab is a focused niche industrial supplier rather than a scaled platform business.

The company sells five core product categories: (1) High Voltage Non-Inductive Resistors including cylinder-type (HTE, HS, UR, LTC), tube-type (UT), composite (ET), and heatsink-attached packages (3R-100, 3R-250); (2) High Voltage DC Power Supply & Switching Systems; (3) High Voltage Capacitors spanning polypropylene film (VX, DX, BX series), aluminum (FX), air-cooled (AX), high-temperature (TX7), smoothing (MX), and IGBT snubber (IX7) variants; (4) High Voltage Dividers and Probes including standard R-C (SVD), gas-insulated (TID), silicone-insulated (PVD), capacitor (CD), and high-voltage DC (CSVD) configurations; and (5) High Voltage Diode Modules (HVDA, 19–153kV). Underlying technical differentiators include non-inductive resistor architectures, self-healing metallized film capacitor constructions, precision measurement accuracy (e.g., 0.01% DC accuracy, 5ppm temperature coefficient on the SVD divider), and an in-house developed non-contact optical ultra-high voltage measurement system launched in 2017.

3RLab generates revenue through direct B2B hardware sales to industrial OEMs, equipment manufacturers, and research institutions. Its primary customer segments are nuclear fusion and scientific research (notably KSTAR at Korea's National Fusion Research Institute, where it has contributed HF heating systems since 2001), display and semiconductor manufacturing equipment, medical equipment including nuclear medicine, and electric vehicle and energy storage systems. Sales motion is consultative: pricing is not publicly disclosed, product specifications are delivered via multilingual datasheets (Korean, English, Chinese, Japanese), and inquiries route through a direct contact channel. The company has no disclosed revenue, no funding rounds, no parent company, and no subsidiaries; all known capital and capacity additions — including the 2012 research institute, the 2019 DC film capacitor mass production line, and the 2021 building expansion — have been internally funded.

Name

3RLab

Legal name

쓰리알랩 주식회사

Website

https://3rlab.com

Company type

Private

Founded year

2000

Operating status

Operating

Headcount range

11–50 employees

Short description

3RLab is a privately held South Korean manufacturer of high-voltage, high-energy, and high-frequency electronic components — resistors, capacitors, dividers, probes, and diodes — serving nuclear fusion research, semiconductor and display equipment, medical imaging, and electric vehicle and energy storage customers worldwide.

Ownership category

akta.pro rank

Product category

High Voltage Electronic Components

NAICS

Capacitor, Resistor, Coil, Transformer, and Other Inductor Manufacturing (334416)

SIC

Electronic & Other Electrical Equipment (No Computer Equip) (3600), Instruments For Meas & Testing Of Electricity & Elec Signals (3825)

akta.pro primary industry

Medium-Voltage Distribution Components (MV breakers, disconnects, reclosers, MV terminations & joints) (IMAGAEAL)

akta.pro secondary industry

High-Voltage Electrical Systems (Switchgear, Transformers, Protection & Control) (EUAEAFAA)

Keywords

• High voltage resistors
• High voltage capacitors
• High voltage dividers
• High voltage diodes
• Precision power electronics

Headquarters

HQ city

Kunpo

HQ country

South Korea

HQ region

Asia

Offices2 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. High Voltage Component Sales: 3RLab generates revenue through the sale of high voltage system components including resistors, capacitors, dividers, probes, and diode modules. The company operates as a manufacturer and exporter of precision high voltage electronic components for industrial and scientific applications.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels2 records

Core offering

3RLab is a South Korean manufacturer specializing in high voltage, high energy, and high frequency electronic components. Its product portfolio includes five core lines: non-inductive resistors, DC film capacitors, voltage dividers and probes, high voltage diodes, and DC power supply and switching systems, with voltage ratings spanning from under 1kV up to 10,000kV. Products are designed for precision measurement, pulse energy, snubber, and RF filtering applications serving industrial, scientific research, and medical equipment customers.

Product overview

3RLab is a Total High Voltage System & Solutions Manufacturer specializing in High Voltage, High Energy, and High Frequency components. The company offers five core product lines: (1) High Voltage Non-Inductive Resistors including cylinder-type resistors (HTE, HS, UR, LTC), tube-type resistors (UT), composite resistors (ET), and heatsink-attached packages (3R-100, 3R-250); (2) High Voltage DC Power Supply & Switching Systems; (3) High Voltage Capacitors including PP film capacitors (VX series, DX series, BX series), aluminum capacitors (FX), air-cooled capacitors (AX series), high-temperature capacitors (TX7), smoothing capacitors (MX series), and IGBT snubber capacitors (IX7); (4) High Voltage Dividers & Probes including standard R-C dividers (SVD), gas/silicone-insulated dividers (TID, PVD), capacitor dividers (CD), and DC dividers (CSVD); and (5) High Voltage Diodes (HVDA). The company serves industrial, scientific research, and medical equipment applications with products ranging from 5kV to 10,000kV.

Differentiator

Problem solved

Functional benefit

Products and services

• High Voltage Non-Inductive Resistors High voltage, high energy, and high frequency non-inductive resistors for precision measurement and pulse applications. Product family includes cylinder-type resistors (HTE, HS, UR, LTC), tube-type resistors (UT), composite resistors (ET), and heatsink-attached packages (3R-100, 3R-250). Used by industrial manufacturers, scientific research institutions, and power electronics equipment makers.
• High Voltage DC Power Supply and Switching System High voltage DC power supply and switching systems including HV RF filters for LCD and semiconductor manufacturing equipment and satellite antenna applications. Provides high power RF filtering and stable voltage delivery in manufacturing processes and high-frequency systems.
• High Voltage Capacitors High voltage DC capacitors including polypropylene (PP) and polyester (PT) film capacitors (VX3, VX5, VX7, VX9, DX6, DX8, BX3, BX5, BX7), aluminum DC capacitors (FX), air-cooled capacitors (AX8, AX9), high-temperature capacitors (TX7), smoothing capacitors (MX3, MX7), and IGBT snubber capacitors (IX7). Features self-healing characteristics and low loss factor. Used for general high voltage, snubber, energy conversion, pulse, SMPS, electric vehicle power conversion, photovoltaic/ESS inverter, and smoothing applications.

Segments4 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Three partnerships are on record, tiered core.

• Nuclear Medicine Academy (Korea)coreStrategic or Co-development Partner · 1 January 20133RLab supplied high voltage plasma systems to the Nuclear Medicine Academy, supporting medical research and treatment applications that require specialized high voltage technology.
• SIEMENS Brazil National Power ProjectcoreStrategic or Co-development Partner · 1 January 20033RLab served as a partner company for SIEMENS Brazil National Power Project, providing high voltage components for power infrastructure applications. This international partnership with Siemens validates the company's capabilities in delivering high voltage solutions for major infrastructure projects.
• National Fusion Research Institute (Korea)coreStrategic or Co-development Partner · 1 January 20013RLab was selected as a participant company for Korea's National Fusion Research Institute. The company developed high frequency heating systems for the KSTAR (Korean Superconducting Tokamak Advanced Research) device and participated in developing accelerator modulator high voltage high energy assemblies. This partnership demonstrates 3RLab's capabilities in precision high voltage systems for scientific applications.

Scale indicators1 record

Recent moves12 records

Expansion highlights3 records

Direct peers

• Directed Energy Inc (DEI): DEI is a US-based niche manufacturer of high-voltage pulsers, HV diode modules, HV probes, and HV measurement components serving pulsed-power, scientific, and defense markets. Highly comparable to 3RLab's HVDA diode modules, dividers/probes, and precision HV measurement portfolio.
• Spellman High Voltage Electronics Corporation: Spellman is a global leader in high-voltage DC power supplies and HV converter/X-ray subsystems, serving medical imaging, semiconductor, and industrial customers. Directly comparable to 3RLab's HV DC Power Supply & Switching System line and overlapping HV capacitor/resistor portfolio.
• HIGHVOLT Prüftechnik Dresden GmbH: HIGHVOLT designs and manufactures HV testing systems, HV dividers, and impulse generators primarily for utility/laboratory HV testing. Overlaps with 3RLab's HV divider/probe (SVD, TID, PVD, CD, CSVD) and modulator assembly business in HV measurement and pulse applications.

Broad incumbents

• Yageo Corporation (KEMET): Yageo acquired KEMET in 2022 to form one of the world's largest passive-component manufacturers, producing MLCCs, film capacitors, and inductors. Overlaps with 3RLab's capacitor portfolio for industrial and EV/power electronics customers, but at vastly greater scale and breadth.
• Murata Manufacturing Co., Ltd. Murata is a global leader in passive electronic components (MLCCs, inductors, EMI/RFI filters) with growing HV capacitor offerings for automotive and industrial power applications. Comparable to 3RLab's HV capacitor and HV RF filter product segments serving EV and grid customers.
• Nichicon Corporation: Nichicon is a Japanese manufacturer of aluminum electrolytic, film, and small lithium-ion capacitors with significant presence in EV, photovoltaic inverter, and industrial power applications. Overlaps with 3RLab's smoothing and pulse-energy capacitor families (MX, FX, AX series).
• KYOCERA AVX Components: KYOCERA AVX (formerly AVX) is a global manufacturer of advanced electronic components including HV capacitors, film capacitors, and IGBT snubbers for automotive, industrial, and consumer markets. Direct overlap with 3RLab's HV capacitor offering, especially snubber and smoothing capacitors for power conversion.
• TDK Electronics (EPCOS): TDK/EPCOS manufactures a broad portfolio of capacitors and inductors including HV-rated film capacitors and IGBT snubber capacitors. Direct overlap with 3RLab's VX/MX/IX capacitor lines, but operates at significantly larger scale across many product categories.
• Vishay Intertechnology: Vishay is one of the world's largest manufacturers of discrete semiconductors (diodes) and passive components including HV resistors, HV rectifiers, and capacitors. Comparable to 3RLab's non-inductive HV resistor (UR, LTC, ET) and HVDA diode module product families.

Others

• General Atomics Electromagnetic Systems: General Atomics' Electromagnetic Systems division develops pulsed-power, HV capacitor banks, and HV systems for defense, fusion, and energy research programs. Comparable customer profile (national labs, fusion/scientific) to 3RLab's KSTAR engagements, though at much larger scale.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat3 records

Key risks6 records

Key highlights7 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 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 3RLab