Flux AS
Flux A/S is a Danish privately-held manufacturer of custom transformers, inductors, chokes, and magnetorquer rods for defence and space, commercial space, renewable energy, automotive, and industrial customers. One of only six ESA Technology Flow Qualified Manufacturers worldwide, with engineering in Denmark and scaled manufacturing in Thailand.
- Company typePrivate
- Founded1995
- HeadquartersAsnæs, Denmark
- Headcount101–250
- GTM typeB2B
- OfferingHardware or Manufacturing
What Flux AS does
Flux A/S is a Danish privately-held designer and manufacturer of custom electromagnetic components — transformers, inductors, chokes, and magnetorquer rods — serving demanding applications in defence and space, commercial space, renewable energy, automotive, and industrial markets. The company traces its space heritage to a 1995 exclusive agreement with Alcatel Space and now operates a dual-site production model: an engineering and space-qualified manufacturing site in Asnæs, Denmark, and a larger LEAN manufacturing facility in Bangkok, Thailand (Flux International Limited) employing roughly 300 staff. Flux holds ESA Technology Flow Qualification (one of only six manufacturers globally), AS9100, ISO 9001, UL1446, and adherence to US MIL-STD-981/MIL-PRF-27 standards, and authored the ESA Detail Specification ESCC3201/013 for custom magnetics.
The business model is engineering-led and project-based. Senior design engineers engage directly with customer engineering teams under three cooperation models — full custom build from drawings, design assistance, or specification-to-production — and pricing is quote-based with multi-year contracts. Revenue is generated through hardware sales of bespoke components. Flux serves marquee enterprise customers across multiple verticals: Airbus (Crew Dragon European Service Module), Terma (20+ year partnership; HERA, RAMSES, CO2M, Harmony missions), Micross/OneWeb (over 9,000 magnetic components delivered for the satellite constellation), Space Inventor (magnetorquer rods), Orbex (launch vehicle solenoid coils), Texas Instruments (co-designed catalogue transformers for TI's space-grade PWM controllers), and nanoTRONIC (Gateway lunar station pump controllers). Go-to-market combines direct enterprise engineering sales with industry exhibitions (PCIM Europe, Space Tech Expo Europe) and content marketing through blog.flux.dk.
The company has deliberately built a vertical specialization in segments requiring zero-failure reliability — space-grade magnetic components with a documented 0% failure rate, AEC-Q200-capable parts for EV powertrain and charging, and harsh-environment magnetics for wind, solar, and wave energy. Its proprietary HiRel (High Reliability) production concept combines true space-grade design and reliability with scalable Thailand-based manufacturing, enabling space-grade quality at commercial-space pricing. The Bangkok facility additionally generates roughly 70% of its energy consumption (380,000 kWh annually) from an early-2023 solar installation.
Flux AS firmographics
Firmographics- Name
- Flux AS
- Legal name
- Flux A/S
- Website
- https://flux.dk
- Company type
- Private
- Founded year
- 1995
- Operating status
- Operating
- Headcount range
- 101–250 employees
- Short description
- Flux A/S is a Danish privately-held manufacturer of custom transformers, inductors, chokes, and magnetorquer rods for defence and space, commercial space, renewable energy, automotive, and industrial customers. One of only six ESA Technology Flow Qualified Manufacturers worldwide, with engineering in Denmark and scaled manufacturing in Thailand.
- Ownership category
- akta.pro rank
Flux AS industry classification
Industry- Product category
- Power Electronics Components
- NAICS
- Power, Distribution, and Specialty Transformer Manufacturing (335311), Electrical Equipment Manufacturing (33531), All Other Electrical Equipment and Component Manufacturing (33599)
- SIC
- Electronic Coils, Transformers & Other Inductors (3677), Power, Distribution & Specialty Transformers (3612), Electrical Industrial Apparatus (3620)
- akta.pro primary industry
- Power Electronics & Grid-Tie Equipment Manufacturing (Converters, Transformers, Switchgear) (EUAMAHAH)
Keywords
Where Flux AS is headquartered
LocationHeadquarters
- HQ city
- Asnæs
- HQ country
- Denmark
- HQ region
- Europe
Offices2 records
Markets served
Flux AS business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Personnel, Operations, Technology or R&D, Supply Chain, Marketing or Sales, Infrastructure
Revenue model
- Custom Magnetic Components: Flux designs, develops, and manufactures custom electromagnetic components including transformers, inductors, and chokes for space, defence, automotive, renewable energy, and industrial applications. The company offers design verification and production, design assistance, and specification-to-production services.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Multi-year contract | Custom project-based pricing |
Go-to-market motion1 record
Distribution channels1 record
Marketing channels5 records
Flux AS product offering
Product offeringCore offering
Flux AS designs, develops, and manufactures custom electromagnetic components—transformers, inductors, and chokes—for power electronics applications in space, defence, automotive, renewable energy, and industrial sectors. The company offers three cooperation models: complete production from customer drawings, design assistance, and full specification-to-production services. It holds ESA Technology Flow Qualification (one of only six globally) and operates production facilities in Asnæs, Denmark and Bangkok, Thailand.
Product overview
Flux AS is a magnetic component manufacturer specializing in custom-designed electromagnetic components for demanding industries. The core product portfolio consists of Transformers, Inductors, and Chokes, which are sold individually and as part of custom-designed solutions. The company also offers specialized products including Magnetorquer Rods for satellite attitude control and a Standard Space Product Catalogue for commercial space applications. All products are designed, developed, and manufactured to meet the stringent requirements of space, automotive, renewable energy, and industrial sectors, with a focus on high reliability and customization.
Differentiator
Problem solved
Functional benefit
Products and services
- Transformers
- Inductors Custom inductors for energy storage, filtering, and power management across demanding applications including EV systems and space power conditioning.
- Chokes Magnetic choke components for filtering and power quality applications in automotive, industrial, and renewable energy systems.
- Magnetorquer Rod Specialized magnetic component for attitude control and stabilization of satellites and space vehicles, providing precise momentum control in Low Earth Orbit.
- Standard Space Product Catalogue Standardized magnetic components designed for commercial and deep space applications, certified to meet ESA and space industry quality standards.
Quantifiable outcome
- 0% component failure rate for space applications
- +3 more outcomes
Companies that use Flux AS
Customer profileNamed customers7 records
Segments5 records
Ideal customer profiles4 records
Flux AS technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature5 records
Flux AS partnerships and signals
Strategic signalPartnerships
Nine partnerships are on record, tiered core and minor.
- European Space Agency (ESA)coreLong-standing strategic partnership where Flux serves as ESA Technology Flow Qualified Manufacturer (one of only six globally). Collaboration began with planar magnetics development for electrical propulsion in 2005. Flux authored the ESA specification ESCC3201/013 for Custom Magnetics.
- Space InventorcorePartnership for magnetorquer rod development for LEO satellite momentum control. Flux handles precise windings and coating of Space Inventor's integrated magnetorquer solution. Also collaborated on the Máni lunar mission.
- OrbexcoreDevelopment partnership for high-performance solenoid valve coils for Orbex's next-generation launch vehicle. Flux's ESA qualification and innovative approach were key factors in the partnership selection.
- MicrosscoreStrategic collaboration for manufacturing, testing, and screening magnetic components for Micross's DC/DC converters for OneWeb satellite constellation. Over 9,000 magnetic components delivered across 2,000+ converter units.
- Termacore20+ year collaboration supplying magnetic components for Terma's satellite systems including RTUs and PCDUs. Components used in HERA, RAMSES, CO2M, and Harmony missions. Flux provides design expertise complementing Terma's satellite system capabilities.
- Texas InstrumentscoreCollaboration releasing off-the-shelf catalogue transformers designed specifically for TI's space-grade PWM controller families. Includes reference kits for satellite designers to accelerate development cycles.
- nanoTRONICcorePartnership supplying EMI filter inductors for nanoTRONIC's pump motor controllers used in the Gateway lunar space station. Flux provides custom inductor designs meeting stringent space-grade requirements.
- Protec GmbHminorDistribution partner representing Flux at Space Tech Expo Europe trade shows in Germany.
- Alcatel SpaceminorFirst space customer in 1995 for exclusive agreement to manufacture magnetic components for booster rockets. Exclusive agreement terminated in 2001.
Scale indicators6 records
Recent moves10 records
Expansion highlights5 records
Flux AS competitors and assessment
Company assessmentMarket position
Competitive moat5 records
Key risks5 records
Key highlights7 records
Customer concentration
Flux AS social profiles
Digital presenceFlux AS compliance and trust
Trust signalCompliance7 records
Flux AS financial estimates
Financial estimateRevenue estimate
Valuation estimate
Flux AS leadership team
Management profileNumber of profiles
Profiles13 records
Flux AS subsidiaries and ownership
Company hierarchySubsidiaries1 record
Flux AS funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Flux AS 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 Flux AS
What does Flux AS do?
Flux AS designs, develops, and manufactures custom electromagnetic components—transformers, inductors, and chokes—for power electronics applications in space, defence, automotive, renewable energy, and industrial sectors. The company offers three cooperation models: complete production from customer drawings, design assistance, and full specification-to-production services. It holds ESA Technology Flow Qualification (one of only six globally) and operates production facilities in Asnæs, Denmark and Bangkok, Thailand.
Is Flux AS a public or private company?
Flux AS is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was Flux AS founded?
Flux AS was founded in 1995. It employs 101 to 250 people.
Where is Flux AS based?
Flux AS is headquartered in Asnæs, Denmark, in the Europe region.
How does Flux AS make money?
One revenue line is on record: custom Magnetic Components.
Does Flux AS have an API?
No public API is recorded for Flux AS.
What industry is Flux AS in?
Flux AS's product category is Power Electronics Components. Its primary akta.pro industry code is EUAMAHAH, Power Electronics & Grid-Tie Equipment Manufacturing (Converters, Transformers, Switchgear). Its NAICS code is 335311 and its SIC code is 3677.