Soumac

What Soumac does

Soumac Assembly Services Ltd is a UK-based Contract Electronics Manufacturer (CEM) founded in 1992 and headquartered in Portsmouth, Hampshire. The company specialises in high-mix, low-to-mid volume printed circuit board (PCB) assembly, delivered to IPC-A-610 Class 2 Standard, alongside integrated PCB testing, rapid prototyping, materials procurement, and repair/rework services. Operationally, Soumac runs a single 8,159 sq ft factory equipped with five Essemtec pick-and-place machines (combined 25,000 cph capacity), a DEK screen printer, reflow ovens, a Vantage EXR 100 X-Ray System, a 190-litre environmental test chamber (-40°C to +180°C), and BGA rework capability, supported by bonded warehouse storage and full component traceability.

The business serves mid-market and enterprise customers across three primary verticals — Aviation, Audio and Broadcast, and Industrial Electronics — using a direct sales motion via phone, email, and website-driven quote requests based on Gerber files and BOM submissions. Pricing is quote-based and project-specific, with no published tiers, and customers are encouraged to visit the Portsmouth facility. The company is ISO 9001:2015 and ISO 14001:2015 certified.

On 29 November 2024, Soumac was acquired by Cherrytech Limited, a UK CEM with a wholly owned manufacturing operation in Thailand. Under the acquisition, Soumac's team and services continue unchanged in the near term, with the parent group planning to offer a wider range of products and greater flexibility. Prior to the acquisition, the company was founder-led by Mike Souter (Managing Director), Tony Mack, Steve Woods, and Chris Collins, with no disclosed external funding history.

Name

Soumac

Legal name

Soumac Assembly Services Ltd

Website

https://soumac.co.uk

Company type

Private

Founded year

1992

Operating status

Acquired

Headcount range

11–50 employees

Short description

Soumac is a UK Contract Electronics Manufacturer founded in 1992, specialising in high-mix, low-to-mid volume PCB assembly, testing, prototyping, and materials procurement from its Portsmouth factory for aviation, audio/broadcast, and industrial electronics customers. Acquired by Cherrytech Limited in November 2024.

Ownership category

akta.pro rank

Product category

Contract Electronics Manufacturing

NAICS

Printed Circuit Assembly (Electronic Assembly) Manufacturing (334418), Bare Printed Circuit Board Manufacturing (334412)

SIC

Printed Circuit Boards (3672), Services-Testing Laboratories (8734)

akta.pro primary industry

PCB Assembly (PCBA/EMS) (HDAHAOAI)

Keywords

• PCB assembly services
• Contract electronics manufacturing
• Printed circuit board testing
• PCB prototyping services
• Surface mount technology

Headquarters

HQ city

Portsmouth

HQ country

United Kingdom

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. PCB Assembly Services: Core revenue stream from contract PCB assembly, specialising in high mix, low-to-mid volume production from prototype to full production. Assembly services delivered to IPC-A-610 Class 2 Standard.
2. PCB Testing Services: Testing services for electronic units and PCBs, including in-house environmental stress testing, functional testing, and Special To-Type Test Equipment (STTE) development.
3. PCB Prototyping Services: Rapid prototyping services for bringing PCB designs to market faster, from initial prototype through to full production.
4. Materials Procurement: Supply of bare boards and components as part of full turnkey assembly services, with full traceability and supply chain management. Also handles free-issue parts for customer-supplied BOMs.
5. Repair and Rework Services: Cost-effective repair and rework services for products not performing to specification, along with counterfeit component detection.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels6 records

Core offering

Soumac is a UK Contract Electronics Manufacturer (CEM) providing high mix, low-to-mid volume printed circuit board assembly using Surface Mount Technology and through-hole processes, delivered to IPC-A-610 Class 2 Standard. The company offers a turnkey service covering PCB Assembly, PCB Testing (functional, environmental stress, X-ray), PCB Prototyping, and Materials Procurement, supported by ISO 9001 certification, a bonded warehouse, and full component traceability.

Product overview

Soumac is a UK-based Contract Electronics Manufacturer (CEM) offering a suite of integrated PCB services. The core portfolio consists of four interconnected service lines: PCB Assembly (specialising in high mix, low-to-mid volume SMT and through-hole assembly), PCB Testing (functional, environmental, and X-ray inspection), PCB Prototyping (rapid turnaround from prototype to production), and Materials Procurement (bare boards, components, tooling, and stencil supply with full traceability). Together, these services provide a complete 'concept to completion' offering for printed circuit board requirements, with quality assurance to IPC-A-610 Class 2 and ISO 9001 standards.

Differentiator

Problem solved

Functional benefit

Products and services

• PCB Assembly High mix, low-to-mid volume printed circuit board assembly service using Surface Mount Technology (SMT) and conventional through-hole processes, delivered to IPC-A-610 Class 2 Standard for industrial, aviation, and audio electronics OEMs.
• PCB Testing Electronic unit and PCB testing service with over 20 years of experience, including environmental stress testing, X-ray inspection, functional testing, Special To-Type Test Equipment (STTE) design and build, and counterfeit component detection.
• PCB Prototyping Rapid, high quality, cost-effective PCB prototyping service with extensive know-how in PCB assembly and component selection to help customers move designs to market faster, from initial prototype through to full production.
• Materials Procurement Procurement service for PCB assembly including bare boards up to 16 layers (CEM1, FR4, IMS, Thermal Clad, PTFE, Polyimide, Flexible and flex-rigid), component sourcing from trusted suppliers, stencil management, moisture control via baking ovens and dry storage, and bonded warehouse for IP protection with full traceability.
• PCB Repair and Rework Cost-effective repair and rework service for products not performing to specification, leveraging over 20 years of test and repair expertise and including counterfeit component detection.

Quantifiable outcome

• Flexible production with accurate and consistent results from prototype through to full production
• +3 more outcomes

Named customers1 record

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

One partnership is on record.

• Cherrytech LimitedcoreOthers · 29 November 2024Cherrytech Limited, a Contract Electronics Manufacturer (CEM) with over 25 years of experience, acquired Soumac Assembly Services on 29 November 2024. Cherrytech operates a UK manufacturing facility in Hampshire and a wholly owned operation in Thailand, offering a combination of low and high-volume manufacturing with cost-competitive production. Cherrytech is accredited to ISO9001 and IPC-A-610 and is working towards ISO14001 certification in 2025. Following the acquisition, Soumac's services and team will continue unchanged in the near term, with plans to offer a wider range of products and services with greater flexibility.

Scale indicators5 records

Recent moves6 records

Expansion highlights4 records

Broad incumbents

• Scanfil: Finland-headquartered global EMS provider with broad PCB assembly, box-build, and supply chain services. A larger incumbent operating in the same EMS space but at much greater scale across multiple geographies.

Direct peers

• Axiom Manufacturing Services: UK-based CEM offering PCB assembly, prototyping, and box-build services across low-to-mid volume production. Comparable in customer targeting (UK mid-market industrial/electronics OEMs) and service-line breadth.
• Merlin Circuit Technology: UK-based PCB fabrication and assembly specialist serving industrial, aerospace, and defence customers. Comparable in vertical mix and small-to-mid volume orientation.
• Bitbox: UK CEM offering contract electronics manufacturing, PCB assembly, and prototyping with similar service-line breadth to Soumac and comparable UK customer base.
• C-MAC Microcircuits: UK Contract Electronics Manufacturer specializing in high-reliability PCB assembly for aerospace, defence, and industrial customers. Highly comparable given Soumac's aviation vertical and IPC-A-610 Class 2 standard.
• Spirit Circuits: UK PCB manufacturer and assembler offering quickturn prototyping, low-to-mid volume production, and assembly services. Overlaps significantly with Soumac's prototyping and high-mix specialty positioning.
• Cherrytech Limited: UK-based Contract Electronics Manufacturer with operations in Hampshire (UK) and Thailand. Now Soumac's parent company following the November 2024 acquisition. Directly comparable CEM offering low- and high-volume PCB assembly with IPC-A-610 accreditation.
• Noteus Group: UK-based electronic manufacturing services provider offering PCB assembly and box build for industrial, aerospace, and medical sectors. Directly comparable in business model, customer base, and UK mid-market positioning.
• Qualitek: UK-based EMS provider offering PCB assembly, prototyping, and box-build for industrial and commercial customers. Comparable in scale, service offering, and UK domestic focus.
• Custom Interconnect: UK-based CEM offering PCB assembly, box-build, and cable harness assembly for industrial and high-reliability sectors. Comparable in mid-market UK CEM positioning and customer mix.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• Xtwitter.com/soumac_pcb
• YouTubeyoutube.com/channel/UCleaguZEr1IMuggWxe8RITw
• LinkedInlinkedin.com/company/soumac

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 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 Soumac