What Sankosha USA does

Sankosha U.S.A., Inc. is the 100%-owned Americas subsidiary of Japan's Sankosha Corporation, established in 1987 and headquartered in Torrance, California. The company manufactures and distributes ceramic gas discharge tubes (GDTs) and related surge protection devices (SPDs), serving as the direct sales, distribution, and technical support channel for the Americas market. Its parent company has developed GDT technology for over 75 years and invented the world's first self-restoring gas tube surge arrester in 1948, as well as the SAN-EARTH M5C conductive concrete ground enhancement material in the 1970s.

The core product portfolio spans surface-mount, two-electrode, three-electrode, high-voltage, and coaxial GDTs across 168+ models, supplemented by LAN and coaxial SPDs, the SAN-EARTH grounding material, and a next-generation DWDM bandpass filter module for optical communications. The business operates a B2B hardware sales model with direct sales force outreach, quote-based pricing, and an authorized distributor network. Customers include consumer electronics manufacturers, CATV and broadband providers, telecom equipment makers, cell tower operators, electric utilities, and broadcast and wireless infrastructure operators. Strategic expansion is pursued through ongoing product development (Smart SPD with deterioration monitoring, GPS-specific protectors), new regional sales offices across Asia, and certification-driven penetration into telecom, power, and electronics verticals.

Name

Sankosha USA

Legal name

Sankosha U.S.A., Inc.

Website

https://sankosha-usa.com

Company type

Private

Founded year

1987

Operating status

Operating

Headcount range

11–50 employees

Short description

Sankosha U.S.A., Inc. is the Americas subsidiary of Japan's Sankosha Corporation, manufacturing and distributing ceramic gas discharge tubes, surge protection devices, and SAN-EARTH conductive concrete grounding materials to electronics, telecom, utility, and broadcast customers.

Ownership category

akta.pro rank

Product category

Surge Protection Components and Lightning Protection Equipment

NAICS

Electrical Equipment Manufacturing (33531)

SIC

Electronic & Other Electrical Equipment (No Computer Equip) (3600), Electrical Industrial Apparatus (3620)

akta.pro primary industry

TVS/ESD & Surge Protection Devices (HDAHAHAE)

akta.pro secondary industries

Varistors & Surge Protection (MOV/TVS-like passive protectors/GDT) (HDAHANAI), Circuit Protection Devices (MCBs, MCCBs, ACBs, fuses, RCD/GFCI, surge protection) (IMAGAEAB), Grounding, Bonding & Lightning Protection (grounding bars, clamps, earthing systems, lightning arrestors) (IMAGAEAJ), Busbars, Insulators, Surge Arresters & Substation Primary Hardware (EUADACAI)

Keywords

• Surge protection devices
• Gas discharge tubes
• Lightning protection components
• Grounding enhancement materials
• Fiber optic filters

Headquarters

HQ city

Torrance

HQ country

United States

HQ region

North America

Offices7 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Gas Discharge Tube (GDT) Sales: Sale of ceramic gas tube surge arresters - the company's core product line for over 75 years. GDTs protect personnel, equipment and circuitry from abnormally high voltages caused by lightning or electrical transients. Available in various configurations (2-electrode, 3-electrode, surface mount, high voltage) and voltage ranges (75V to 6000V).
2. Surge Protection Device (SPD) Sales: Complete surge protection devices including coaxial SPDs for antenna lines, LAN protectors for Ethernet equipment (GigE, 100Base-TX, 10Base-T, PoE), and Smart SPDs with monitoring capabilities.
3. SAN-EARTH Ground Enhancement Materials: Sale of SAN-EARTH M5C conductive concrete ground enhancement material used to build highly effective grounding electrodes. The product is sold as powder in bags for horizontal trench or vertical installation around grounding electrodes.

Go-to-market motion2 records

Distribution channels3 records

Marketing channels4 records

Core offering

Sankosha USA manufactures and sells ceramic gas tube surge arresters (GDTs) and complete surge protection devices (SPDs) that protect personnel, equipment, and circuitry from abnormally high voltages caused by lightning or electrical transients. The company also offers SAN-EARTH M5C, a patented conductive concrete ground enhancement material, and DWDM bandpass filter modules for optical communications. Products serve consumer electronics, telecommunications, power/energy, broadcast, and network infrastructure applications.

Product overview

Sankosha USA offers a comprehensive portfolio of surge protection products centered around Ceramic Gas Tube Surge Arresters (GDTs). The core product line includes multiple GDT series across three categories: Surface Mount types (SD3, SD4, SDH4, SD8, 3SD4, 3SDH4), Two Electrode types (U, Y05, Y06S, Y08JS, Y08SV, Y, CA series), and Three Electrode types (3H, 3J, 3P, 3Y06, 3YD, 3YW series). Supporting product lines include Coaxial Surge Protection Devices with various connector types (TNC, SMA, F, N, BNC, M, CX), LAN Surge Protection Devices with RJ45 connectors for Ethernet/PoE applications, SAN-EARTH M5C conductive concrete ground enhancement material, and DWDM Bandpass Filter Modules for fiber optic applications. Smart SPDs add monitoring capabilities with surge counting and deterioration testing. The company serves diverse markets including consumer electronics, modems, satellite, computer, CATV/Broadband, industrial, and telecom sectors.

Differentiator

Problem solved

Functional benefit

Brands

• SAN-EARTH: Conductive concrete ground enhancement material (M5C) for building highly effective permanent grounding electrodes
• Smart SPD
• LAN-CAT5e-P
• LAN-1000IS
• LAN-1000BO
• DWDM Bandpass Filter Module

Products and services

• Gas Discharge Tubes (GDT) - Ceramic Surge Arresters Ceramic Gas Tube Surge Arresters (GDTs) that protect personnel, equipment and circuitry from abnormally high voltages caused by lightning or electrical transients. Feature sparkover at specific voltage levels, high surge ratings with very low capacitance, available in axial leaded, radial leaded, surface mount, and special packages. Discharge voltages from 75V to 6000V in two and three electrode configurations.
• Coaxial Surge Protection Devices (SPDs) Heavy duty surge protection devices for coaxial cables providing protection from surges caused by lightning or other transients. Ideal for radio and wireless telephone communication, Broadband, CATV, GPS and cellular applications. Feature GDT technology with low capacitance for high frequency transmission applications.
• LAN Surge Protection Devices (SPDs) RJ45 LAN SPDs providing reliable surge protection for GigE (1000Base-T), 100Base-TX, 10Base-T and Power Over Ethernet (PoE) equipment. Compact modules with integrated clips for 35mm DIN rail installation. Models include LAN-CAT5e-P, LAN-CAT6-IS, LAN-1000IS, and LAN-1000IS-2.
• SAN-EARTH M5C Conductive Concrete Ground enhancement material - a fine powder conductive concrete used to build highly effective, environmentally safe, permanent grounding electrodes. Absorbs moisture from surrounding soil and hardens to become a conductive solid, dramatically increasing electrode surface area. Manufactured according to ISO 9001 Quality Standards and meets IEC 62561-7 standard.
• DWDM Bandpass Filter Module Next generation Dense Wavelength Division Multiplexing (DWDM) filter module with 50GHz and 100GHz spacing. Standard configuration provides 16 channels with 50GHz spacing or 8 channels with 100GHz spacing. Passive system with no power or cooling required. Accurately extracts ITU-defined channel wavelengths to reduce crosstalk and operational errors.
• Smart SPD with Surge Counting Surge protection devices with surge counting capability and deterioration testing for monitoring the history and health of lightning protection systems. Enables users to track when protection requires replacement.
• GPSP1-L1 GPS Surge Protector Surge protector specifically designed to protect GPS equipment from surges entering through the antenna port.

Named customers7 records

Segments5 records

Ideal customer profiles5 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature7 records

Partnerships

Eight partnerships are on record, tiered core and minor.

• British TelecomcoreChannel Partner/ Reseller/ Distributor · 1 January 2014SAN-EARTH was approved for use in British Telecom broadband grounding cabinets, representing a significant validation of the product for telecommunications infrastructure applications.
• Nanjing Jyunkoh Technology Inc.minorStrategic or Co-development Partner · 1 January 2008Joint venture company established in China in 2008.
• Doble EngineeringcoreChannel Partner/ Reseller/ Distributor · 1 January 2007Doble Engineering of Boston, MA became the exclusive distributor in Japan for Doble's power condition evaluation products (transformers, relays, cells, etc.), representing a mutual partnership where Sankosha distributes Doble products while maintaining their own product lines.
• P.T. Santelindo KencanaminorStrategic or Co-development Partner · 1 September 1995Joint venture company established in Indonesia in September 1995.
• Global Atmospherics, Inc.minorStrategic or Co-development Partner · 1 February 1995Sankosha acquired and consolidated US companies Lightning Location and Protection (LLP), Atmospheric Research Systems (ARSI), and GeoMet Data Services (GDS) to form Global Atmospherics, Inc. in February 1995.
• KroneminorChannel Partner/ Reseller/ Distributor · 1 August 1988Krone became an authorized distributor for Sankosha gas tube arresters in August 1988.
• Northern TelecomminorChannel Partner/ Reseller/ Distributor · 1 November 1984Northern Telecom became an authorized distributor for Sankosha products in Japan in November 1984.
• World Products Inc.minorChannel Partner/ Reseller/ Distributor · 1 November 1975World Products Inc. became an authorized distributor in the USA for Sankosha gas tube arresters in November 1975, representing one of Sankosha's early international distribution relationships.

Scale indicators4 records

Recent moves7 records

Expansion highlights5 records

Direct peers

• Bourns: Major direct competitor in gas discharge tubes and surge protection devices for telecom, industrial, and consumer electronics applications. Offers overlapping 2-electrode and 3-electrode GDTs with comparable voltage and form-factor coverage, and is the most direct US-market GDT rival.
• Raycap: Direct peer in surge protection for telecom, wireless, and broadband infrastructure, including cell tower and small-cell applications. Competes with Sankosha's coaxial and LAN SPDs in the same end markets.
• DEHN: German specialist in surge protection, lightning protection, and grounding components. Direct competitor in SPDs, GDTs, and grounding enhancement products for utilities, telecom, and industrial customers, with comparable IEC 62561-compliant product lines.
• CITEL: French surge protection manufacturer specializing in SPDs, GDTs, and AC/DC power protection. Direct peer in coaxial, telecom, and PV surge protection with similar application focus in utility and broadcast markets.
• nVent (ERICO): Direct peer in lightning protection and grounding systems; ERICO Cadweld grounding connections and nVent ERICO grounding enhancement materials compete head-to-head with SAN-EARTH M5C in utility, telecom, and rail applications. Also offers SPDs and lightning protection components.

Broad incumbents

• ABB: Global power and automation incumbent with surge arresters, station class SPDs, and substation protection products that overlap with Sankosha's utility-grade offerings and SAN-EARTH deployment at substations and transmission systems.
• Littelfuse: Large US-listed incumbent in circuit protection with broad GDT, TVS diode, MOV, fuse, and SPD portfolios. Competes with Sankosha across nearly every surge protection category, but operates a much wider product set aimed at automotive, industrial, and electronics OEMs globally.
• Eaton: Large electrical equipment incumbent with a substantial surge protection and SPD portfolio within its Electrical Americas segment. Competes in facility-level SPDs, TVSS, and electrical protection for data centers, healthcare, and industrial customers.
• TDK (EPCOS): Major electronic components manufacturer with GDTs, varistors, and surge arresters in its EPCOS product line. Competes with Sankosha in surface-mount and 2-electrode GDTs serving telecom, industrial, and consumer electronics customers globally.
• Phoenix Contact: Large German industrial connectivity and surge protection incumbent. Competes in DIN-rail mounted SPDs, signal-line protection, and lightning protection modules for industrial automation, with broader portfolio including terminal blocks and power supplies.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/sankosha-usa-inc

Compliance8 records

Revenue estimate

Valuation estimate

Number of profiles

Subsidiaries7 records

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 Sankosha USA