ISOCOM
ISOCOM Limited designs and manufactures radiation-hard optoelectronic and microelectronic components — optocouplers, power MOSFETs, solid state relays, VCSEL lasers, and voltage regulators — serving space, defence, and aerospace customers globally through direct sales and a nine-region distributor network from its UK headquarters.
- Company typePrivate
- Founded1982
- HeadquartersPeterlee, United Kingdom
- Headcount11–50
- GTM typeB2B
- OfferingHardware or Manufacturing
What ISOCOM does
ISOCOM Limited is a UK-based, privately held designer and manufacturer of high-reliability (HiRel) radiation-hard optoelectronic and microelectronic components, founded in 1982 and headquartered in a purpose-built 18,000 sq ft facility in Peterlee, County Durham. The company's core product portfolio includes optocouplers and opto-isolators (in transistor, AC-DC logic, high-speed, high-gain, high-voltage, linear, and zero-crossing triac variants), radiation-tolerant power MOSFETs, solid state relays and latching solid state relays, VCSEL laser diodes, voltage regulators, detectors, and emitters. All products are hermetically sealed, screened to MIL-PRF-38534 Class K and MIL-PRF-19500 JANS specifications, and tested for total ionizing dose tolerance up to 1 Mrad(Si). Proprietary technology includes N-channel and P-channel SR MOSFET platforms, the world's first 4-pin ceramic optocoupler, and the CHD320 photovoltaic coupler with 10-15V output — all independently validated by NASA JPL, ESA, Fraunhofer Institute, BAE Systems, and Alter Technology TÜV NORD.
The company's primary end markets are space (satellites, launch vehicles, spacecraft, planetary rovers, DC-DC converters), defence and aerospace (military systems including the Eurofighter Typhoon), and adjacent verticals including nuclear/particle physics research (CERN), medical, communications, and industrial applications. ISOCOM generates revenue through direct sales of standard and custom-designed components and through a global authorized distributor network spanning the UK/Europe, USA, India, South Korea, Japan, Israel, Spain, the Nordics, and Southern Europe, with quote-based pricing on long-cycle defense and space contracts. The company holds AS9100D, ISO 9001:2015, JOSCAR registration, and RoHS compliance, and is led by founder Thomas Bayat (CEO and Managing Director since acquiring the business in 1994) with a headcount of 11-50 employees. Space-heritage design wins include the International Space Station, Galileo, Glonass, PROBA-3, ExoMars, and the Yenisey A1 geostationary satellite.
ISOCOM firmographics
Firmographics- Name
- ISOCOM
- Legal name
- ISOCOM Limited
- Website
- https://isocom.uk.com
- Company type
- Private
- Founded year
- 1982
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- ISOCOM Limited designs and manufactures radiation-hard optoelectronic and microelectronic components — optocouplers, power MOSFETs, solid state relays, VCSEL lasers, and voltage regulators — serving space, defence, and aerospace customers globally through direct sales and a nine-region distributor network from its UK headquarters.
- Ownership category
- akta.pro rank
ISOCOM industry classification
Industry- Product category
- HiRel Radiation-Hardened Optoelectronic and Microelectronic Components
- NAICS
- Semiconductor and Other Electronic Component Manufacturing (33441), Other Electronic Component Manufacturing (334419)
- SIC
- Electronic Components & Accessories (3670), Semiconductors & Related Devices (3674), Electronic Components, Nec (3679)
- akta.pro primary industry
- Optoelectronic Components (LEDs, photodiodes, optocouplers, optical sensors) (IMAGAJAF)
Keywords
Where ISOCOM is headquartered
LocationHeadquarters
- HQ city
- Peterlee
- HQ country
- United Kingdom
- HQ region
- Europe
Offices1 record
Markets served
ISOCOM business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Operations, Personnel, Technology or R&D, Supply Chain, Marketing or Sales, Infrastructure
Revenue model
- Optoelectronic Components Sales: ISOCOM generates revenue through the sale of radiation-hard, high-reliability optoelectronic and microelectronic components including optocouplers, power MOSFETs, solid state relays, VCSEL lasers, and voltage regulators. Products are sold directly and through a global distributor network to defence, space, aerospace, medical, communications, and industrial sectors.
- Custom Design and Manufacturing Services: ISOCOM offers custom design and manufacturing services for bespoke components based on individual customer requirements, with the ability to manufacture custom parts with complex specifications.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Multi-year contract | Standard and Custom Component Sales |
Go-to-market motion2 records
Distribution channels9 records
Marketing channels5 records
ISOCOM product offering
Product offeringCore offering
ISOCOM designs, manufactures, and tests radiation-hardened, hermetically sealed optoelectronic and microelectronic components — including optocouplers/opto-isolators, power MOSFETs, solid state relays, latching solid state relays, VCSEL lasers, voltage regulators, detectors, and emitters — from its 18,000 sq ft UK clean-room facility. The products are built to MIL-PRF-38534 and MIL-PRF-19500 specifications for use in space, defence, aerospace, communications, medical, and nuclear research applications, with bespoke custom design and manufacturing services also offered.
Product overview
ISOCOM Limited is a designer and manufacturer of HiRel (high reliability) optoelectronic and microelectronic components, primarily serving space, defence, aerospace, industrial, communications, and medical sectors. The product portfolio centers on radiation-hard, hermetically sealed components built to withstand extreme radiation environments. Core product lines include: Optocouplers/Opto-Isolators (offering transistor, AC-DC logic interface, high speed, high gain, high voltage, linear, zero crossing triac, and photon variants); Power MOSFETs (N-channel, P-channel, and combination configurations); Solid State Relays/MOSFET Switches (single, dual, quad, and optional channel); Latching Solid State Relays; VCSEL Lasers; Voltage Regulators; Detectors; and Emitters. These products are used in space applications including the International Space Station, Galileo, Glonass, PROBA-3, and ExoMars, as well as in defence systems like the Eurofighter Typhoon. All products are AS9100D and ISO 9001 certified and screened to MIL-PRF-38534 and MIL-PRF-19500 specifications.
Differentiator
Problem solved
Functional benefit
Products and services
- Optocouplers/Opto-Isolators Radiation-hard, hermetically sealed optocouplers providing galvanic isolation for high-voltage power systems in space, satellite, and high-reliability applications. Available in transistor, AC-DC logic interface, high speed, high gain, high gain photon, high voltage, linear, and zero crossing triac configurations.
- Power MOSFETs Radiation-tolerant power MOSFETs in N-channel, P-channel, and combination N+P-channel configurations for space-grade applications including DC-DC converters, H-bridges, motor controllers, and bus converters. Voltage range 20-200V with current handling up to 65A.
- Solid State Relays / MOSFET Switches High-reliability solid state relays and MOSFET switches offering non-wearing, silent, reliable switching. Available in single, dual, quad, and optional channel configurations as a replacement for mechanical relays in space, military, and aerospace applications. Hermetically sealed.
- Latching Solid State Relays Latching solid state relays capable of switching currents up to 60 Amps with positional memory, no moving parts for extended lifespan, faster switching speeds, and resistance to shock and vibration. Available in high-side, low-side, and combined switching configurations.
- VCSEL Lasers High-power VCSEL laser diodes in hermetically sealed TO-18, TO-46, and LCC-3 packages, serving as efficient radiation sources for continuous wave and pulsed operations.
- Voltage Regulators Hermetically sealed, HiRel radiation-hard voltage regulators for space, military, and aerospace applications. Available in adjustable linear, dual, low dropout adjustable, low dropout fixed, low dropout high current, quad precision operational amplifier, and shunt configurations.
- Detectors Hermetically sealed, HiRel radiation-hard and tested detectors for use in demanding radiation environments.
- Emitters Hermetically sealed, HiRel radiation-hard and tested emitters for use in harsh radiation environments.
- Custom Design and Manufacturing Services Bespoke design and manufacturing services for radiation-hard optoelectronic and microelectronic components tailored to individual customer specifications, including alternatives and drop-in replacements for legacy parts.
- ISMQ10ND1-1 Quad Channel MOSFET 100V/1.6A quad N-Channel logic enhancement mode power MOSFET with RDS(on) of 290mΩ, super high cell density DMOS technology optimized for DC-DC converters, manufactured to MIL-PRF-19500 specification. Available in 16-pin DIP package.
- ISMQ10NF1-1 Quad Channel MOSFET 100V/1.6A quad N-Channel logic enhancement mode power MOSFET with RDS(ON) of 290mΩ, super high density cell design for low RDS(ON) and fast switching speeds, optimized for DC-DC converter efficiency. Available in 16-pin flatpack package.
- IS49 Transistor Optocoupler Hermetically sealed single-channel transistor optocoupler with infrared emitting diode and silicon phototransistor. Continuous maximum forward current of 50mA, CTR over 350%, and 1000VDC withstand test voltage. TID tested to 150Krad(Si) and displacement damage tested to 1 MeV x 10^13. Used in Yenisey A1 geostationary satellite.
- CSM100 4-Pin LCC Optocoupler Europe's first 4-Pin ceramic optically coupled isolator. Single-channel optocoupler with IR-emitting diode and silicon phototransistor in 4-pin LCC package, hermetically sealed with solder dip option, high current transfer ratio, 1000 Vdc withstand test voltage. Radiation tested by ESA and NASA JPL up to 150 krad TID.
- CHD320 Photovoltaic Optocoupler Photovoltaic optocoupler for isolated Solid-State Relays with minimum open circuit voltage of 10-15V (2x-3x standard 5V devices), ceramic package with metal or ceramic hermetic lid sealing (3.85 x 3.85 x 1.6 mm), minimum isolation voltage 500V rms, operating range -55 to 125°C. Suited for Defence, Aerospace, and Space applications.
- CH100 Ultra-low Profile Optocoupler Series Single channel, radiation hard, ultra-low profile opto-isolators composed of an infrared emitting diode and silicon phototransistor, designed to operate well below -150°C for hybrid applications and direct PCB mounting.
- N & P Channel MOSFETs for Space Applications Radiation-tolerant MOSFETs based on proprietary N-channel and P-channel SR technology platform for space-grade applications including DC-DC converters, H-bridge, motor controllers, switching power controllers, and bus converters. Low RDS(on) from 10mΩ, drain current up to 65A, voltage range 20-200V, in hermetically sealed surface mount ceramic packages.
Quantifiable outcome
- Radiation withstanding minimum 100KRad(SI) with displacement damage of 1Mev at 10^-12
- +5 more outcomes
Companies that use ISOCOM
Customer profileNamed customers10 records
Segments7 records
Ideal customer profiles4 records
ISOCOM technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature6 records
ISOCOM partnerships and signals
Strategic signalPartnerships
Twelve partnerships are on record, tiered core, strategic and minor.
- Rhopoint ComponentscoreRhopoint Components appointed as new distributor for ISOCOM in UK and Europe. Partnership announced December 2025, effective immediately. Rhopoint has over 50 years of experience providing local support and global reach, focusing on defence, space, and aerospace sectors. Thomas Bayat, CEO and Managing Director, stated this will significantly enhance availability of ISOCOM's specialised products across UK and European markets.
- MICROSS Components Inc.coreMICROSS Components appointed as ISOCOM's distribution partner in the USA in February 2022. CEO Thomas Bayat stated MICROSS has a long-standing track record of excellent demand creation and high calibre customer service. Graham Jefferies, Managing Director of MICROSS Components Limited, noted alignment with ISOCOM will solve customers' Optoelectronic and Power component needs in USA and India.
- MilexiacoreMilexia appointed to promote and supply ISOCOM product lines across Italy, Greece, France, Switzerland and Luxembourg since August 2020. Milexia has been in business since 1974 with advanced market knowledge enabling promotion to defence, aerospace, and space industries.
- NationalChips KoreacoreNationalChips Korea signed as high reliability component distributor to space, defence and aerospace markets. Agreement provides full range of radiation hard optoelectronic components including optocouplers to South Korean market.
- Syratron Technologies Pvt LtdcoreSyratron Technologies appointed as distributor in India. High reliability component distributor to space, defence and aerospace markets providing radiation hard optoelectronic components.
- DonalbacoreDonalba appointed as high reliability component distributor to space, defence and aerospace markets in Spain and Portugal. Provides full range of radiation hard optoelectronic components including optocouplers.
- BeTech Engineering LtdcoreBeTech Engineering appointed as distributor in Israel. Major importer and distributor to electronic component market serving space, aerospace, oil & gas and defence industries with high reliability radiation hard components.
- Expando Electronics ABcoreExpando Electronics appointed as distributor for Nordic territory. Leading supplier of electronic components with over 15 years experience supplying radiation hard optoelectronic components to space, aerospace and defence industries.
- Shoshin Corp LtdcoreShoshin Corp appointed as distributor in Japan. Leading supplier with half a century of experience in aviation, marine and defence industry. Provides high reliability radiation hard components to space, aerospace, oil & gas and defence markets.
- University of NorthumbriastrategicISOCOM partnered with University of Northumbria to build the world's first commercial laser-based satellite communications system through funding provided by the UK Space Agency. Partnership enables development of innovative space communication technology.
- Business Durham / North East Satellite Applications Centre of ExcellencestrategicBusiness Durham supported ISOCOM through the North East Satellite Applications Centre of Excellence at NETPark in Sedgefield, providing funding, advice, networking and new opportunities since 2014. Facilitated UK Space Agency innovation funding.
- Data Device CorporationminorCo-exhibiting partner at 34th Space Symposium in 2018. Data Device Corporation and ISOCOM shared booth space at the exhibition.
Scale indicators8 records
Recent moves7 records
Expansion highlights6 records
ISOCOM competitors and assessment
Company assessmentDirect peers
- Excelitas Technologies: Global manufacturer of high-reliability photonic and electronic components, including optocouplers, photodetectors, and emitters for defence, aerospace, and space markets. Closely comparable product portfolio (optoelectronics, sensors, emitters) and end-customer overlap with ISOCOM.
- Micross Components: US-based distributor and supplier of high-reliability/military-grade electronic components. Direct comparable as a channel and solutions provider for rad-hard discrete semiconductors, optocouplers, and microcircuits into space, defence, and aerospace customers. Already ISOCOM's USA and India distributor.
- Cissoid: Belgian designer and supplier of radiation-hardened semiconductor ICs (power, analog, mixed-signal) for space, defence, and industrial applications. Direct competitor in rad-hard power MOSFETs, voltage regulators, and analog ICs serving European and US space primes.
- Alter Technology TÜV NORD: European supplier of high-reliability and radiation-tested optoelectronic and microelectronic components, and a leading qualification test house. Comparable hi-rel component portfolio and serves many of the same space/defence customers; has independently validated ISOCOM's optocouplers.
- VPT (a HEICO company): US manufacturer of radiation-hardened and high-reliability DC-DC power converters and power components for space, defence, and aerospace. Comparable mission profile (rad-hard power electronics for satellite and avionics programs) and shares ISOCOM's MIL-spec and DC-DC converter customer base.
- Solid State Devices Inc (SSDI): US manufacturer of high-reliability and radiation-hardened power MOSFETs, solid-state relays, and power conversion components for space, defence, and aerospace. Direct overlap with ISOCOM's MOSFET and SSR product lines and its MIL-PRF-19500/MIL-PRF-38534 screening focus.
Broad incumbents
- Infineon Technologies: Global semiconductor leader with a significant rad-hard power MOSFET and discrete semiconductor portfolio inherited from International Rectifier. Competes head-to-head with ISOCOM in space-grade power switching, with vastly greater R&D and manufacturing scale.
- Microchip Technology (Microsemi): Large incumbent offering a broad portfolio of radiation-hardened and rad-tolerant semiconductors (FPGAs, analog ICs, MOSFETs, optocouplers) for space and defence. Direct product overlap with ISOCOM but at much greater scale and with vertically integrated fabs.
- Teledyne Technologies: Diversified US conglomerate with multiple defence/aerospace electronics subsidiaries producing hi-rel components, imaging sensors, and power subsystems. Overlaps with ISOCOM on radiation-tolerant electronics and represents a potential strategic acquirer for the niche.
Regional players
- Rhopoint Components: UK and European distributor of high-reliability electronic components to defence, space, and aerospace markets. Direct comparability as a UK/Europe channel partner, and appointed as ISOCOM's new UK/Europe distributor in December 2025.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks6 records
Key highlights6 records
Customer concentration
ISOCOM social profiles
Digital presenceISOCOM compliance and trust
Trust signalCompliance7 records
ISOCOM financial estimates
Financial estimateRevenue estimate
Valuation estimate
ISOCOM leadership team
Management profileNumber of profiles
Profiles3 records
ISOCOM funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
ISOCOM 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 ISOCOM
What does ISOCOM do?
ISOCOM designs, manufactures, and tests radiation-hardened, hermetically sealed optoelectronic and microelectronic components — including optocouplers/opto-isolators, power MOSFETs, solid state relays, latching solid state relays, VCSEL lasers, voltage regulators, detectors, and emitters — from its 18,000 sq ft UK clean-room facility. The products are built to MIL-PRF-38534 and MIL-PRF-19500 specifications for use in space, defence, aerospace, communications, medical, and nuclear research applications, with bespoke custom design and manufacturing services also offered.
Is ISOCOM a public or private company?
ISOCOM is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was ISOCOM founded?
ISOCOM was founded in 1982. It employs 11 to 50 people.
Where is ISOCOM based?
ISOCOM is headquartered in Peterlee, United Kingdom, in the Europe region.
How does ISOCOM make money?
Two revenue lines are on record. Optoelectronic Components Sales are the primary driver. The others are custom Design and Manufacturing Services.
Who are ISOCOM's main competitors?
Direct peers on record are Excelitas Technologies, Micross Components, Cissoid, Alter Technology TÜV NORD, VPT (a HEICO company) and Solid State Devices Inc (SSDI). Broad incumbents are Infineon Technologies, Microchip Technology (Microsemi) and Teledyne Technologies. Rhopoint Components is listed as a regional player.
Does ISOCOM have an API?
No public API is recorded for ISOCOM.
What industry is ISOCOM in?
ISOCOM's product category is HiRel Radiation-Hardened Optoelectronic and Microelectronic Components. Its primary akta.pro industry code is IMAGAJAF, Optoelectronic Components (LEDs, photodiodes, optocouplers, optical sensors). Its NAICS code is 33441 and its SIC code is 3670.