SMT Reflow Oven - Mark7

The World's Best SMT Convection Reflow Oven for High-Throughput Applications

The New MK7 platform revolutionizes the Reflow industry with several new and ground breaking designs! The MK7 incorporates all of the customer requests for lower Delta T, reduced nitrogen consumption and extended PM into a new low height package that makes it easy to see across the production floor.

We invite you to visit any of our three locations to run profiles and gather DATA for yourself to see the strong advantages of the MK7 for your production! Or if you prefer, send us your toughest board and we will run profiles and generate the data for you. We are happy to work with you to custom configure your system to suit your needs.

  • Highest Yields!
  • Lowest Delta T on the board
  • Lowest Nitrogen & Electrical Usage!
  • Maintenance Free!
  • VOID Free - with Vacuum option
  • INDUSTRY 4.0 Compatibility
  • Integrated Cpk software at No Charge!
Mark 7 SMT Reflow Oven System

New Low Height Top Shell

New low height top shell provides much easier access for operators. All skins have double insulation to save up to 10-15% in energy losts.

INDUSTRY 4.0 Compatibility

Internet of Manufacturing (IoM) —Smart factories, intelligent machines and networked processes through the use of cyber-physical systems.

Enhanced Low Height Heater Modules

reflow oven heater modules

Enhanced low height heater module provides the lowest Delta Ts on the product with better air flow and uniformity! The Uniform Gas Management system eliminates "net flow" which results in nitrogen consumption reductions of up to 40%! New semi-circular heater is more robust and efficient with much longer life time.

Revolutionary Flux Management System

reflow oven flux management

Our revolutionary flux collection system traps the flux in collection jars that can be easily removed and replaced while the oven is running - saving time consuming P.M. The new flux filtration box also has no risk of flux clogging for a longer term P.M. interval. Additionally, our proprietary Flux-Free Grill system limits the flux residue on the cooling grills giving the Heller system the highest production yields of any oven!

Programmable Cooling

reflow oven cooling module

The new Big Flat Coil Cooling module provides cool rates of >3oC/sec. That rate meets even the most demanding lead-free profile requirements. Heller can also easily achieve slow cooling rate required by the flip chip process. Heller’s unique design using a 10-inch (250 mm) long heater module provides more modules within the same heating length which means more process control and reduced liquid times.

Energy Management Software

reflow oven energy management software

Proprietary software allows you to program exhaust draw to optimize energy consumption during the various production times - heavy, light or idle. Energy savings of up to 10-20% have been realized!

Reflow Oven CPK

reflow oven CPK

Heller provides dynamic 3 tiered system (Tier 1: Oven CPK, Tier 2 Process CPK, Tier 3 Product Traceability) enables customer to quickly improve product quality and yield while reducing costs. And the additional benefits of automatic record keeping and recall provide customers with the peace of mind that all process parameters are under control and within spec.

Learn More

适用所有Heller SMT回流焊炉

Available Features:

Mark7 Series SMT Reflow Oven Models Specifications

MK7 Models

Overall Length

# of Heating Zones

# of Cooling Zones

Max PCB Width

1707 MK7 SMT Reflow Oven


360 cm (142")


1 Top (std.) Bottom Cool/
External Cool optional


1826 MK7 SMT Reflow Oven


465 cm (183")


2 Top (std) Bottom Cool /
External Cool optional



465 cm (183")


2 Top (std) Bottom Cool /
External Cool optional


1936 MK7 SMT Reflow Oven


590 cm (232")


3 Top (std) Bottom Cool /
External Cool optional



590 cm (232")


3 Top (std) Bottom Cool /
External Cool optional


2043 MK7 SMT Reflow Oven


678 cm (267")


3 Top (std) Bottom Cool /
External Cool optional


2049 MK7 SMT Reflow Oven


744 cm (292")


4 Top (std) Bottom Cool /
External Cool optional


2156 MK7 SMT Reflow Oven


869 cm (342")


5 Top (std) Bottom Cool /
External Cool optional


*1913, 1809 & 1707 Reflow Ovens have 10 inch wide heater modules for reduced liquidus time.

**2043, 1936 & 1826 Reflow Ovens have 12 inch modules for profile compatibility with competitor systems.