What CSI Technologies does

CSI Technologies, Inc. is a US-based specialty manufacturer of connectivity solutions for telecommunications and electronics applications, founded in 1980 and incorporated in California. The company designs and produces copper connectivity products (terminal blocks, cable assemblies, attenuators, RF filters, DSL splitters, alarm modules), fiber optic components (distribution hardware, adaptor panels, loaded cassettes, splice trays, optical jumpers and trunks), and Wilcom-branded electronic test equipment (optical fiber identifiers, visual fault locators, power meters, light sources). It also operates a contract manufacturing services business covering SMT and thru-hole PCBA, over-molded cable assemblies, wire harnesses, motor lead terminations, and turnkey electromechanical assembly at its ISO 9001:2008-certified facility in Belmont, NH. CSI holds two registered patents covering its H-pad copper attenuator architecture and modular RFI filter design used in telco line treatment.

CSI generates revenue through two streams: direct hardware product sales (connectivity components and test equipment) and professional services contract manufacturing, both delivered via its own e-commerce site (gotocsitech.com), downloadable product catalogs, and toll-free phone sales using quote-based pricing. Its customer base is organized across four segments — telecommunications carriers and service providers (primary), FTTH/FTTP network operators (primary), OEM manufacturers, and the general electronics manufacturing industry — with regulatory certifications (UL, CSA, FCC, RoHS) used as procurement qualifications for telco and industrial buyers.

On March 19, 2026, CSI was acquired by I-Pulse, a strategic operating company pursuing US-based high-energy, high-voltage capacitor manufacturing. The acquisition positions CSI to extend its manufacturing footprint into capacitors serving mining, geothermal, water resource management, and defense end markets, with multi-year capital investment commitments from I-Pulse to scale production capacity and prototyping capability.

Name

CSI Technologies

Legal name

CSI Technologies, Inc.

Website

https://gotocsitech.com

Company type

Private

Founded year

1980

Operating status

Operating

Headcount range

11–50 employees

Short description

CSI Technologies is a US-based, ISO 9001-certified manufacturer founded in 1980 that produces copper and fiber optic connectivity components, Wilcom-branded fiber test equipment, and contract electronics manufacturing services for telecommunications carriers, FTTH/FTTP operators, OEMs, and electronics manufacturers from its Belmont, NH facility.

Ownership category

akta.pro rank

Product category

Telecommunications Connectivity Hardware

NAICS

Electronic Connector Manufacturing (334417), Communication and Energy Wire and Cable Manufacturing (33592), Fiber Optic Cable Manufacturing (335921), Other Communication and Energy Wire Manufacturing (335929)

SIC

Electronic Connectors (3678), Communications Equipment, Nec (3669)

akta.pro primary industry

Cable Assemblies & Patch Cords (Copper/Fiber) (HDAFALAF)

akta.pro secondary industries

Fiber Optic Cabling (Singlemode/Multimode) (HDAFALAB), Connectors, Jacks & Couplers (RJ45/LC/SC/MPO/MTP) (HDAFALAD), Cable Assemblies & Wire Harnesses (HDAHAOAB), Fiber-Optic Interconnects (Connectors/Cables/Transceivers Interfaces) (HDAHAOAE), RF & Microwave Connectors and Coaxial Assemblies (HDAHAOAD)

Keywords

• Fiber optic connectivity
• Telecom hardware manufacturing
• Copper connectivity solutions
• Contract electronics manufacturing
• Fiber optic test equipment

Headquarters

HQ city

Meredith

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Hardware Products Sales: Sale of connectivity hardware including fiber optic distribution hardware, copper telco products, and electronic test equipment. Products are manufactured in the USA at the Belmont, NH facility and sold directly to customers.
2. Contract Manufacturing Services: Turnkey contract manufacturing services including SMT PCBA, thru-hole PCBA, over-molded cable assemblies, wire harnesses, and mechanical assembly for the electronics manufacturing industry.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels1 record

Core offering

CSI Technologies manufactures and sells copper and fiber optic connectivity hardware including terminal blocks, cable assemblies, DSL splitters, RF filters, fiber distribution hardware, optical jumpers, and fiber optic test equipment. The company also provides turnkey contract manufacturing services such as SMT PCBA, thru-hole PCBA, wire harnesses, and mechanical assembly from its ISO 9001:2008 certified facility in Belmont, NH.

Product overview

CSI Technologies is a manufacturer of connectivity solutions established in 1980, operating as a U.S.-based provider of central office and outdoor plant (OSP) solutions. The company offers a multi-product portfolio organized around four main categories: Copper Products (OEM components, telco equipment including terminal blocks and cable assemblies, and line treatment devices such as DSL splitters and RF filters), Fiber Optics (distribution hardware, adaptors, loaded cassettes, splice trays, and optical jumpers/trunks), Test Equipment (optical fiber identifiers, visual fault locators, power meters, and light sources primarily from Wilcom), and Contract Manufacturing Services (full PCBA, wire harnesses, and turnkey manufacturing). Products are manufactured in the USA at the company's Belmont, NH facility, with ISO 9001:2008 certification.

Differentiator

Problem solved

Functional benefit

Products and services

• Copper Products Copper connectivity solutions including OEM products, telco equipment (terminal blocks, IDC cable assemblies, coaxial assemblies, loose cable), and line treatment devices (copper attenuators, RF filters, DSL splitters) sold to telcos and OEMs.
• Fiber Optics Comprehensive fiber optic components including distribution hardware, adaptor plates, adaptors, loaded cassettes, splice trays, relay racks, wire management, optical jumpers, and optical trunks for local network deployment.
• Test Equipment Fiber optic test equipment including optical fiber identifiers, visual fault locators (VFL), power meters, and light sources for FTTH and FTTP installation and maintenance.
• Contract Manufacturing Services Full-service electronics manufacturing including SMT and thru-hole PCBA, over-molded cable assemblies, wire harnesses, motor lead terminations, and turnkey manufacturing solutions at the Belmont, NH facility.

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

One partnership is on record.

• I-PulsecoreStrategic or Co-development Partner · 19 March 2026I-Pulse has acquired CSI Technologies to expand U.S. high-energy capacitor manufacturing capabilities. The acquisition enables I-Pulse to bring capacitor production in-house, strengthening its U.S. supply chain and accelerating the development of compact, high-energy-density capacitors for sectors including mining, geothermal energy, and water resource management. I-Pulse plans strategic investments in CSI Technologies over the next several years to expand production capacity and prototype development for commercial and defense markets.

Scale indicators2 records

Recent moves5 records

Expansion highlights4 records

Direct peers

• AFL: AFL manufactures fiber optic cable, connectivity, fiber management products, and test/inspection tools for telecom, broadband, and enterprise networks. It is highly comparable to CSI's fiber distribution hardware, optical jumpers/trunks, and fiber test equipment focus.
• Clearfield: Clearfield provides fiber management, cabinets, terminals, and connectivity products for broadband and FTTH deployments. It is comparable to CSI's FTTH/FTTP-oriented distribution hardware, loaded cassettes, optical jumpers, and network-operator customer base.
• Optical Cable Corporation: Optical Cable Corporation is a U.S.-based manufacturer of fiber optic and copper data communication cabling and connectivity products. It is comparable to CSI's fiber/copper cable assemblies, interconnects, and domestic manufacturing positioning.
• RF Industries: RF Industries manufactures interconnect products including coaxial, fiber, and custom cable assemblies for communications and industrial applications. It is comparable to CSI's coaxial assemblies, custom cable assembly work, and OEM connectivity solutions.

Broad incumbents

• Amphenol Network Solutions: Amphenol Network Solutions supplies central office, outside plant, fiber distribution, and telecom network infrastructure products. It overlaps directly with CSI's central office/OSP positioning and copper/fiber connectivity hardware.
• CommScope: CommScope is a global supplier of broadband, enterprise, and telecom network infrastructure, including fiber and copper connectivity, cabinets, terminals, and structured cabling. It is a larger incumbent competing across many of CSI's fiber, copper, and OSP categories.
• Corning Optical Communications: Corning Optical Communications offers optical fiber, cable, connectors, hardware, and FTTH/broadband network solutions. It is comparable to CSI's fiber optic cabling, distribution hardware, and service-provider deployment focus, but at much larger scale.
• Leviton Network Solutions: Leviton Network Solutions provides copper and fiber structured cabling systems, patch panels, connectors, and related network infrastructure. It is comparable to CSI's copper/fiber interconnect and distribution products serving enterprise and telecom-style network installations.
• Belden: Belden manufactures cable, connectivity, and network infrastructure products for industrial, enterprise, and communications applications. Its copper/fiber cable and connectivity portfolio overlaps with CSI's cable assemblies, loose cable, and fiber interconnect products.
• Panduit: Panduit supplies network infrastructure, fiber/copper connectivity, patching, cabinets, and cable management products. It is comparable to CSI's fiber distribution hardware, adaptor panels, wire management, and network connectivity catalog, though Panduit operates at broader global scale.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/gotocsitech
• LinkedInlinkedin.com/company/csi-technologies-inc.

Compliance5 records

Revenue estimate

Valuation estimate

Number of profiles

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 CSI Technologies