Foster Transformer Company
Foster Transformer Company, a privately-held Cincinnati manufacturer founded in 1937, produces inductors, LED power supplies and drivers, EMI filters, coils, and magnetic components for OEM customers across electronic and electrical equipment industries.
- Company typePrivate
- Founded1937
- HeadquartersCincinnati, United States
- Headcount11–50
- GTM typeB2B
- OfferingHardware or Manufacturing
What Foster Transformer Company does
Foster Transformer Company is a privately-held, Cincinnati-based manufacturer of electromagnetic and passive magnetic components, in continuous operation since 1937. The company produces inductors, LED power supplies and drivers, EMI filters, coils, and related magnetic components, supplying these as built-to-specification parts to OEMs that integrate them into electronic and electrical equipment. Its product portfolio is anchored in analog magnetics — a category where value is delivered through winding design, core material selection, EMI suppression performance, and qualification to customer-specific electrical and mechanical requirements rather than through software or digital features.
The business operates as a small specialist B2B contract/manufacturing supplier with a headcount of 11–50 employees. Based on the absence of disclosed pricing, an e-commerce storefront, or self-service catalog in available data, revenue mechanics appear to rely on direct sales relationships, quotation-based custom orders, and OEM bill-of-material qualifications rather than high-volume channel sales. The company's longevity in a niche corner of the magnetics market is consistent with a model built on repeat custom work for a limited set of industrial, lighting, and electronics OEM customers, where qualification cycles and incumbent-supplier inertia create stickiness on existing programs.
Available evidence is materially thin. The corporate website (foster-transformer.com) returned only a loader/verification page during data collection, and no financial disclosures, customer logos, management team, partnerships, certifications, M&A history, or recent strategic actions were captured. This evidence gap constrains the depth of any investment-grade assessment and is itself a finding: a 1937-vintage industrial supplier with no observable digital footprint, no recent press cadence, and no disclosed leadership or capital actions is difficult to diligence from external sources alone.
Foster Transformer Company firmographics
Firmographics- Name
- Foster Transformer Company
- Website
- https://foster-transformer.com
- Company type
- Private
- Founded year
- 1937
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Foster Transformer Company, a privately-held Cincinnati manufacturer founded in 1937, produces inductors, LED power supplies and drivers, EMI filters, coils, and magnetic components for OEM customers across electronic and electrical equipment industries.
- Ownership category
- akta.pro rank
Foster Transformer Company industry classification
Industry- Product category
- Magnetic and Electronic Components
- NAICS
- Power, Distribution, and Specialty Transformer Manufacturing (335311), Electrical Equipment Manufacturing (3353)
- SIC
- Electronic Coils, Transformers & Other Inductors (3677), Power, Distribution & Specialty Transformers (3612)
- akta.pro primary industry
- Transformers & Magnetics (Power/Signal) (HDAHANAD)
- akta.pro secondary industry
- DC-DC Converters & Power Modules (Isolated/non-isolated, POL modules) (IMAGADAB)
Keywords
Where Foster Transformer Company is headquartered
LocationHeadquarters
- HQ city
- Cincinnati
- HQ country
- United States
- HQ region
- North America
Markets served
Foster Transformer Company business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Supply Chain, Personnel, Operations, Technology or R&D, Marketing or Sales
Foster Transformer Company product offering
Product offeringCore offering
Foster Transformer Company manufactures and supplies electromagnetic and power-conversion components, including inductors, coils, EMI filters, LED power supplies, LED drivers, and related magnetic components. The company sells these engineered hardware parts to business customers that integrate them into electronic systems, lighting products, and industrial equipment.
Differentiator
Problem solved
Functional benefit
Products and services
- Inductors
- LED Power Supplies
- LED Drivers
- EMI Filters
- Coils
- Magnetic Components
Companies that use Foster Transformer Company
Customer profileIdeal customer profiles1 record
Foster Transformer Company technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Foster Transformer Company competitors and assessment
Company assessmentDirect peers
- Coilcraft: Coilcraft is a US-based manufacturer of inductors, transformers, and EMI/RFI filters serving industrial, automotive, and consumer electronics. Directly comparable to Foster on core magnetics product lines (inductors, coils, EMI filters) and customer base.
- Triad Magnetics: Triad Magnetics manufactures transformers, inductors, chokes, and EMI filters for audio, industrial, and power applications. Closely matches Foster's transformer-and-magnetics product portfolio and small/mid-sized US manufacturer profile.
- Hammond Manufacturing: Hammond Manufacturing produces transformers, inductors, and related electronic enclosures for industrial and electrical markets. Comparable to Foster in transformer and magnetics manufacturing with an overlapping customer base.
- Signal Transformer (Bel Fuse): Signal Transformer, part of Bel Fuse, manufactures transformers, chokes, and inductors for power and signal applications. Directly overlaps Foster's transformer and inductor product lines and serves similar industrial/electronics customers.
- Prem Magnetics: Prem Magnetics designs and manufactures transformers, inductors, and custom magnetic components for industrial, medical, and communications markets. Closely comparable as a US-based custom magnetics specialist of similar size.
Broad incumbents
- Würth Elektronik: Würth Elektronik is a major global manufacturer of electronic components including a broad portfolio of inductors, transformers, and EMI filters. Larger and broader incumbent competing with Foster in the same magnetics categories.
- TDK Corporation: TDK is a global electronics leader with a substantial magnetics portfolio covering inductors, transformers, and EMI components. Competes with Foster across all product categories but at vastly greater scale and breadth.
- Bourns, Inc. Bourns manufactures a wide range of electronic components including magnetics, circuit protection, and EMI filtering products. Overlaps with Foster in magnetics and EMI filter categories as a much larger, diversified incumbent.
- Schneider Electric: Schneider Electric is a global energy management and industrial automation leader with a substantial transformer and power conversion portfolio. Represents the broad-incumbent, large-scale end of the transformer category in which Foster operates.
- Eaton Corporation: Eaton is a large diversified industrial manufacturer with significant exposure to transformers, power conversion, and electrical components. Competes in adjacent transformer categories and serves many of the same industrial OEM customers as Foster.
Market position
Strengths4 records
Weaknesses4 records
Competitive moat2 records
Key risks6 records
Key highlights5 records
Customer concentration
Foster Transformer Company social profiles
Digital presenceFoster Transformer Company financial estimates
Financial estimateRevenue estimate
Valuation estimate
Foster Transformer Company leadership team
Management profileNumber of profiles
Foster Transformer Company funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Foster Transformer Company M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Foster Transformer Company
What does Foster Transformer Company do?
Foster Transformer Company manufactures and supplies electromagnetic and power-conversion components, including inductors, coils, EMI filters, LED power supplies, LED drivers, and related magnetic components. The company sells these engineered hardware parts to business customers that integrate them into electronic systems, lighting products, and industrial equipment.
Is Foster Transformer Company a public or private company?
Foster Transformer Company is a private company. It is classified as unknown and is currently operating.
When was Foster Transformer Company founded?
Foster Transformer Company was founded in 1937. It employs 11 to 50 people.
Where is Foster Transformer Company based?
Foster Transformer Company is headquartered in Cincinnati, United States, in the North America region.
Who are Foster Transformer Company's main competitors?
Direct peers on record are Coilcraft, Triad Magnetics, Hammond Manufacturing, Signal Transformer (Bel Fuse) and Prem Magnetics. Broad incumbents are Würth Elektronik, TDK Corporation, Bourns, Inc., Schneider Electric and Eaton Corporation.
Does Foster Transformer Company have an API?
No public API is recorded for Foster Transformer Company.
What industry is Foster Transformer Company in?
Foster Transformer Company's product category is Magnetic and Electronic Components. Its primary akta.pro industry code is HDAHANAD, Transformers & Magnetics (Power/Signal), with a secondary code of IMAGADAB, DC-DC Converters & Power Modules (Isolated/non-isolated, POL modules). Its NAICS code is 335311 and its SIC code is 3677.