Heller
MK7
Plate 01HELLER MK7 Reflow Soldering Oven
Heller Industries IncWatch on YouTubePlate 02HELLER MK7 Reflow Oven
Heller Industries IncWatch on YouTube
What it is
The Heller MK7 reflow oven is an ISO-certified system. The MK7 is built in a low-height package that is intended to improve operator visibility across the production floor. The MK7 is highly customizable with nitrogen chamber, air, and vacuum process gas options. The MK7 series is available in several configurations that differ in the number of heated zones and cooling zones. The 1707 MK7 model has seven heated zones and one cool zone. The 1826 MK7 model has ten heated zones (ten top and ten bottom) and two cool zones. The 1913 MK7 model has thirteen heated zones and three cool zones. The 1936 MK7 model has ten heated zones and three cool zones. The 2043 MK7 model has thirteen heated zones and three cool zones.[1][2][3][4][5]
Where it fits in the process flow
General reference — not yet source-verifiedIn a surface-mount technology assembly line, the reflow oven is placed after the solder paste printer and the pick-and-place machine. The oven receives populated boards and performs the final soldering step. After reflow soldering, boards pass to inspection equipment such as automated optical inspection (AOI) or X-ray inspection.
Applications
The MK7 reflow oven is used for convection reflow soldering in surface-mount technology assembly. The MK7 is also applied in semiconductor advanced packaging and power electronics manufacturing. The MK7 is used in consumer electronics assembly.[1][2][3][4][5]
- Reflow soldering
- Surface Mount Technology
- Semiconductor
- Advanced Packaging
- Power Electronics
- Consumer Electronics Assembly
What do the numbers mean?
Power & electrical2
Gas & chemistry1
Control & software1
Dimensions & facilities5
Configuration & options32
- Oven Length
- 5900 mm (1936MK7, 1913MK7), 3615 mm (1707MK7), 465 cm / 183" (1826MK7), 6774 mm (2043MK7 with 3 cooling zones)[1]
- Heated Length (Convection/Total)
- 1920 mm (1707MK7), 3600 mm (1936MK7), 3560 mm (1913MK7), 360 cm (1826MK7), 4390 mm (2043MK7)[2]
- Flux Management System
- Green flux management using catalyst, produces no waste byproduct, allows flux removal while oven is running[1]
Vintage & configurations
Documented models & variants
| Designation | Generation | Vintage | Changes | Source |
|---|---|---|---|---|
| 1936 MK7 | — | — | Variant with 5900 mm oven length, 10 heated zones, 3600 mm heated length, 3 cool zones, and standard maximum working temperature of 350°C. | web.archive.org[1] |
| 1707 MK7 | — | — | Variant with 3615 mm oven length, 7 heated zones, 1920 mm heated length, 1 cool zone, and standard maximum working temperature of 350°C. | web.archive.org[2] |
| 1913 MK7 | — | — | Variant with 5900 mm oven length, 13 heated zones, 3560 mm heated length, 3 cool zones, and standard maximum working temperature of 350°C. | web.archive.org[3] |
| 1826 MK7 | — | — | Eight heated zones mentioned in the description; belt speeds up to 1.88 m/min; oven length 465 cm; heated length 360 cm; two cool zones; standard maximum working temperature 350°C with 400°C option. | hellerindustries.com[4] |
| 2043 MK7 (3 Cooling Zone) | — | — | Thirteen heating zones; belt speed up to 1.88 m/min; cooling zones: 3; length 6.774 m; width 1520 mm; height 1.440 m; weight 4180 kg; conveyor speed 250 - 1,880 mm/min. | sinerji-grup.com[5] |
What replaced it?
Alternatives
Tools documented as functional equivalents — same process step and wafer size, from a different manufacturer. Each equivalence cites its source.
- BTU Pyramax 100 A— Same function class: Thermal / Diffusion, nullCompare in depthsource[6]
What does it need to run?
Site utility requirements, footprint, and infrastructure needed to install and operate this tool. Sourced from public records.
Where are the manuals?
Generated from public-source data on file. Enter your email to access — nothing is published; details are routed privately.
Not publicly documented
Field notes
No research found yet — worked with this tool? Share what you know.
Frequently asked questions
What process gas options does the Heller MK7 support?
The Heller MK7 supports air and nitrogen as process gas options.[1][2][3]
What is the maximum working temperature of the Heller MK7?
The standard maximum working temperature of the Heller MK7 is 350°C, with an optional upgrade to 400°C (or 450°C on some models).[1][2][3]
Not publicly documented
The following facts about the MK7 are absent from this record as of this revision. First-hand knowledge or a citation closes a gap; every submission is reviewed before publication.
No publicly documented production dates or lifecycle milestones (introduction, end of production, EOL) for the MK7 are on record.
Answerable by: OEM historical records or a trade-press announcement
The control-system platform and OS era of the MK7 are not on record.
Answerable by: an engineer who operated it or OEM installation records
No publicly documented failure modes or field errata for the MK7 are on record.
Answerable by: a field service engineer, process engineer, or maintenance technician
The process node or technology generation of the MK7 is not on record.
Answerable by: an OEM datasheet or a fab qualification report
No publicly documented compatible parts, consumables, or accessories for the MK7 are on record.
Answerable by: an OEM parts catalog or a service engineer
No research found yet — worked with this tool? Share what you know.
Sources & citations
Sources (7)Every fact above is drawn from these public sources
- [1]web.archive.org — web.archive.orgweb.archive.org
- [2]web.archive.org — web.archive.orgweb.archive.org
- [3]web.archive.org — web.archive.orgweb.archive.org
- [4]hellerindustries.com — hellerindustries.comhellerindustries.com
- [5]sinerji-grup.com — sinerji-grup.comsinerji-grup.com
- [6]Equipment inventory listing
- [7]Heller 1936 MK7 SMT Reflow Oven — flason-smt.comflason-smt.com
Last updated Sep 27, 2026.
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