What BTU International does

BTU International, founded in 1950 and headquartered in Westford, Massachusetts, is a global supplier of advanced thermal processing equipment for the electronics manufacturing market and operates as a wholly-owned subsidiary of Amtech Systems Inc. (NASDAQ: ASYS). The company designs and manufactures two principal product families: reflow ovens (Aurora as the next-generation platform and Pyramax as the proven workhorse, with sub-variants including Pyramax TrueFlat for warpage control, Pyramax Vacuum for void reduction, and Pyramax ZeroTurn dual-chamber) and custom continuous belt furnaces (controlled atmosphere furnaces, fast fire muffle-less furnaces, and convection dryers). Bruce Technologies, a wholly-owned division, adds horizontal tube and diffusion furnaces for semiconductor wafer processing. Its technology stack centers on proprietary closed-loop convection control, patented gas barrier technology achieving less than 2ppm O2 atmosphere purity, recipe-controlled TrueFlat warpage control for ultra-thin substrates, and the patent-pending Aqua Scrub aqueous-based flux management system. The Wincon 8 control platform, developed since 1988, integrates with CFX, Hermes, OPC, REST, MQTT, and SECS/GEM protocols for Industry 4.0 and MES connectivity.

The company sells primarily through an enterprise field sales motion supplemented by regional representative channel partners, with active presence at industry events including APEX, NEPCON China, SEMICON, PCIM Europe, and SMTA Expos. Revenue streams span capital equipment (reflow ovens and custom belt furnaces), recurring replacement parts, equipment upgrades (Intellimax/Wincon, Aqua Scrub, Profile Guardian, closed-loop convection retrofits), and 24/7 global service and support contracts across 50+ countries. Manufacturing operates on two-to-three continents — United States, China, and a newly announced Singapore facility — supported by process applications laboratories for product testing and customer demonstrations. Customer segments are diversified across electronics manufacturing/SMT, semiconductor advanced packaging (including AI chip 2.5D/3D packaging, CoWoS, panel-level packaging), automotive and power electronics, AI server and data center hardware, aerospace electronics, and specialty materials processing. With 10,000+ cumulative units shipped, 75+ years of operating history, and 50+ industry awards, BTU is positioned in the highest-quality tier of thermal processing equipment suppliers serving the AI-driven advanced packaging buildout.

Name

BTU International

Legal name

BTU International

Website

https://btu.com

Company type

Private

Founded year

1950

Operating status

Operating

Headcount range

101–250 employees

Short description

BTU International, a wholly-owned subsidiary of Amtech Systems, designs and manufactures advanced thermal processing equipment — reflow ovens (Aurora, Pyramax) and custom belt furnaces — serving semiconductor advanced packaging, SMT electronics manufacturing, automotive, and AI server hardware customers across 50+ countries.

Ownership category

akta.pro rank

Product category

Thermal processing equipment

NAICS

Industrial Process Furnace and Oven Manufacturing (333994)

SIC

Industrial Process Furnaces & Ovens (3567)

akta.pro primary industry

Industrial Furnaces, Kilns & Thermal Processing Equipment (IMAHAEAE)

Keywords

• Solder reflow ovens
• Thermal processing equipment
• Custom belt furnaces
• Semiconductor diffusion furnaces
• SMT manufacturing systems

Headquarters

HQ city

Westford

HQ country

United States

HQ region

North America

Offices3 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Reflow Ovens: Sale of high-performance convection reflow ovens including Aurora and Pyramax families for SMT printed circuit board assembly and semiconductor packaging processes. Sold as capital equipment with various configurations and zone options.
2. Custom Belt Furnaces: Sale of precision-controlled high-temperature belt furnaces for custom applications including controlled atmosphere furnaces, fast fire furnaces, and dryers. Custom-configured to customer specifications.
3. Replacement Parts: Sales of spare parts for reflow ovens and furnaces including Aurora replacement parts, Pyramax replacement parts, Aqua Scrub spare parts, belt furnace heating elements, and Bruce diffusion furnace heater cores.
4. Equipment Upgrades: Sales of performance upgrades for existing equipment including Intellimax & Wincon upgrades, Aqua Scrub upgrades, Profile Guardian upgrades, flux trap lip vents, nitrogen fast purge, cooler flux filters, blower fail detection, closed loop convection, and edge rail chain oiler.
5. Service and Support: 24/7 global customer service and technical support, health check programs, training classes, and applications labs. Service plans and support contracts for installed base.

Go-to-market motion3 records

Distribution channels4 records

Marketing channels5 records

Core offering

BTU International designs, manufactures, and services advanced thermal processing equipment — primarily convection reflow ovens (Aurora, Pyramax, TrueFlat, Vacuum, ZeroTurn platforms) and custom continuous belt furnaces (Controlled Atmosphere, Fast Fire, Dryers), plus Bruce Technologies horizontal tube diffusion furnaces — for SMT printed circuit board assembly, semiconductor advanced packaging, automotive and power electronics, heavy-board applications, and specialty materials processing. Revenue is generated through sales of capital equipment, replacement parts and upgrades, and 24/7 service contracts.

Product overview

BTU International is a global leader in advanced thermal processing equipment for the electronics manufacturing market. The company offers two main product families: Reflow Ovens (Aurora and Pyramax platforms) for SMT printed circuit board assembly and semiconductor packaging, and Custom Continuous Belt Furnaces for high-temperature custom applications. The product portfolio spans from entry-level 6-zone reflow ovens to advanced multi-zone systems with vacuum, TrueFlat warpage control, and dual-chamber configurations. Key platforms include the Aurora (next-generation with configurable zones, integrated flux management, and energy-saving features) and Pyramax (proven high-throughput with closed-loop convection control). BTU also offers the Wincon proprietary control system (Wincon 8) as the software platform managing all ovens and furnaces, with modules including EnergyPilot, Smart Power, RecipePro, Profile Guardian, and Profile Tracer. The company manufactures controlled atmosphere furnaces, fast fire muffle-less furnaces, convection dryers, and Bruce Technologies diffusion furnaces. Aqua Scrub Flux Management is an integrated/add-on aqueous-based flux management system. With over 10,000 units shipped and 75+ years of experience, BTU serves high-tech customers requiring precision thermal processing for AI chips, advanced packaging, power electronics, and semiconductor manufacturing.

Differentiator

Problem solved

Functional benefit

Brands

• Aurora: Next-generation reflow oven platform with factory-configurable heating and cooling zones for advanced packaging and SMT applications
• Pyramax
• Wincon
• Aqua Scrub
• TrueFlat
• EnergyPilot
• Smart Power
• Bruce Technologies
• Profile Guardian
• RecipePro

Products and services

• Aurora Reflow Oven Platform Next-generation high-performance convection reflow oven platform for SMT printed circuit board assembly and advanced semiconductor packaging. Factory-configurable heating and cooling zones, integrated Aqua Scrub flux management, Smart Power energy savings, and Wincon 8 control system; available in multiple lengths up to 200 inches heated length with nitrogen atmosphere support.
• Pyramax Reflow Oven High-throughput convection reflow oven platform delivering thermal uniformity and versatile configuration for SMT and advanced packaging. Closed-loop convection control, 6-12 zone configurations, air or nitrogen atmosphere, temperatures up to 400°C.
• Pyramax TrueFlat Reflow Oven Advanced warpage control reflow oven built on the Pyramax platform for ultra-thin substrates. Recipe-controlled suction technology eliminates die tilt and substrate warpage without custom carriers or vacuum pumps; designed for substrates 0.15-0.30mm, up to 350°C, with dual-lane edge transport.
• Pyramax Vacuum Reflow Oven Vacuum reflow oven for high-volume manufacturing with solder void reduction to less than 5%. 10 zones of closed-loop convection heating, nitrogen atmosphere capable, max process temperature 350°C, production width 457x457mm under vacuum; designed for large EMS and high-volume automotive customers.
• Pyramax ZeroTurn Dual Chamber Reflow Oven Dual chamber reflow oven enabling rapid recipe switching and high throughput. Independent temperature, belt speed, and static pressure convection rate controls for each chamber allow lead-free and leaded processes to run simultaneously side-by-side; 12 zones of closed-loop convection heating.
• Aqua Scrub Flux Management System Eco-friendly closed-loop aqueous-based flux management system that continuously extracts flux-laden atmosphere from the reflow oven and returns clean atmosphere. Achieves 90% flux removal efficiency at 4X lower cost of ownership than conventional designs; field retrofit ready and available on Pyramax nitrogen ovens.
• Controlled Atmosphere Belt Furnace Precision-controlled belt furnace with muffle construction for high-purity N2 atmosphere (less than 2ppm O2). Designed for glass-to-metal sealing, stainless steel brazing, and processes requiring tight atmosphere and temperature control. Available with hydrogen, nitrogen, forming gas, and argon atmospheres and temperatures up to 1150°C.
• Fast Fire Belt Furnace Muffle-less conveyor furnace combining precision temperature control with low-cost operation. Enables rapid heating and cooling, allows weekend shutdown, and offers precision atmosphere control, independent over-temperature protection per zone, and programmable active cooling for thick film processing, thin-film circuits, and precision resistors.
• Convection Dryers (Radian & Convection) Inline dryers configured with radiant heaters (ceramic fully enclosed coil), convection plenums, or combinations thereof. Integrates with Controlled Atmosphere and Fast Fire furnaces for pre-heating or binder burn-out; top/bottom heating configurations and closed-loop convection control up to 48-inch widths.
• Bruce Diffusion Furnaces (BDF) Horizontal tube furnaces for semiconductor applications offered through the Bruce Technologies division. Available for 100-300mm wafers with OEM replacement heater cores, precision loading, and proven throughput; over 1,000 furnaces and nearly 6,000 horizontal furnace tubes delivered worldwide.
• Wincon Control System Proprietary Windows-based control platform for BTU reflow ovens and furnaces, purpose-built for thermal processes since 1988. Wincon 8 features next-generation control with SEMI E95-style UI, light/dark mode, and full MES integration; supports CFX, Hermes, OPC, REST, and MQTT protocols with real-time diagnostics, barcode traceability, and custom alerts.

Quantifiable outcome

• Oxygen levels as low as 2ppm in peak reflow zones for nitrogen processing
• +5 more outcomes

Named customers6 records

Segments5 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration7 records

Feature10 records

Partnerships

Four partnerships are on record, tiered regional and core.

• Performance Technologies GroupregionalChannel Partner/ Reseller/ DistributorBTU International appointed Performance Technologies Group as the exclusive representative for the tri-state region (NY, NJ, CT area). They provide sales representation and customer support for BTU's thermal processing equipment in this territory.
• SMarTsol AmericaregionalChannel Partner/ Reseller/ DistributorBTU International named SMarTsol America as representative for Texas territory. They provide sales representation and customer support for BTU's thermal processing equipment in the Texas market.
• Bruce TechnologiescoreTechnology or IntegrationBruce Technologies is a division of BTU International within the Amtech Group. Bruce Technologies specializes in horizontal tube furnaces for semiconductor applications. The companies are co-located in Westford, MA, and together provide diffusion furnace products and services.
• Amtech GroupcoreOthersBTU International is An Amtech Company. Amtech Systems is the parent company. BTU operates as a premier brand within the Amtech family of companies, benefiting from shared resources and corporate structure while maintaining its market leadership in thermal processing.

Scale indicators10 records

Recent moves8 records

Expansion highlights5 records

Direct peers

• SEHO Systems: German manufacturer of selective soldering, reflow soldering, and wave soldering equipment, directly competing with BTU in electronics manufacturing thermal processing. Both serve high-reliability automotive, aerospace, and industrial electronics manufacturers.
• Heller Industries: US-based reflow oven manufacturer specializing in convection reflow soldering systems for SMT assembly, directly competing with BTU in PCB reflow applications. Both target high-volume electronics manufacturers with similar throughput and thermal uniformity value propositions.
• Rehm Thermal Systems: German manufacturer of reflow soldering systems with convection and vacuum reflow technology, directly competing with BTU's Pyramax and Pyramax Vacuum platforms. Both serve automotive electronics, power electronics, and SMT manufacturers with energy-efficient thermal processing solutions.
• Tempress Systems: Dutch manufacturer of horizontal and vertical diffusion furnaces for semiconductor applications, directly competing with BTU's Bruce Technologies division. Both serve semiconductor manufacturers with thermal processing equipment for wafer processing up to 300mm.
• Shenzhen JT Automation Equipment: Chinese manufacturer of reflow soldering ovens and SMT assembly equipment, directly competing with BTU in Asia-Pacific markets. Both target cost-conscious SMT manufacturers with convection reflow solutions, with JT positioned as a lower-cost regional alternative.
• Centrotherm International: German-based supplier of thermal processing equipment for semiconductor and photovoltaic applications, including diffusion furnaces and controlled atmosphere systems. Competes with BTU's Bruce Technologies division in horizontal tube furnace and diffusion furnace markets.
• Kurtz Ersa: German-based global manufacturer of reflow soldering systems and selective soldering equipment, directly competing with BTU's Pyramax and Aurora platforms in SMT electronics manufacturing. Both serve automotive electronics, consumer electronics, and industrial customers with convection-based reflow ovens.

Emerging players

• Despatch Industries: US-based manufacturer of industrial thermal processing equipment including furnaces and ovens for electronics, aerospace, and materials processing applications. Partially overlaps with BTU's custom belt furnace and controlled atmosphere furnace product lines.

Broad incumbents

• ITW Electronics Assembly Equipment: Division of Illinois Tool Works (ITW) offering a broad portfolio of electronics assembly equipment including reflow ovens, selective soldering, and wave soldering. As a larger diversified industrial conglomerate subsidiary, ITW EAE competes across BTU's served markets with greater financial scale and broader product breadth.
• ASMPT (ASM Pacific Technology): Hong Kong-headquartered global supplier of semiconductor assembly equipment and materials, including die bonding and advanced packaging solutions. ASMPT is a larger, broader incumbent whose thermal processing and packaging equipment intersects with BTU's advanced packaging and semiconductor customer base.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/106118102772276
• LinkedInlinkedin.com/company/btu-international

Compliance5 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Subsidiaries1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A1 record

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about BTU International