Heller
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The Heller 1809 EXL is a reflow oven used for surface-mount technology (SMT) board assembly. The Heller 1809 EXL features 9 top and 9 bottom forced convection heating zones. The Heller 1809 EXL can operate in air or nitrogen and has a temperature range of 25–350°C.[1][2]

A reflow oven heats a populated printed circuit board through a controlled thermal profile so solder paste melts and then solidifies to form joints. A machine in this class typically moves the board through heated zones and cooling zones on a conveyor.
A reflow oven sits after solder paste printing and component placement in SMT assembly. The machine completes the thermal soldering step before the board moves to downstream inspection or test operations.
Reflow ovens are used for soldering surface-mount assemblies on printed circuit boards. A machine in this class is used for production of populated boards that require repeatable thermal processing.
Tools documented as functional equivalents — same process step and wafer size, from a different manufacturer. Each equivalence cites its source.
Site utility requirements, footprint, and infrastructure needed to install and operate this tool. Sourced from public records.
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The overall dimensions are 183 inches (465 cm) in length, 54 inches (137 cm) in width, and 63 inches (160 cm) in height.[6][1][8]
The oven has 9 top and 9 bottom forced-convection heating zones.[6][1][2][8]
The maximum conveyor speed is 74 inches per minute (188 cm per minute).[1][8]
The following facts about the 1809 EXL 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 1809 EXL are on record.
Answerable by: OEM historical records or a trade-press announcement
No publicly documented variants, configuration options, or revision breakpoints of the 1809 EXL are on record.
Answerable by: an OEM product catalog or an engineer who ordered or specified the tool
The control-system platform and OS era of the 1809 EXL 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 1809 EXL are on record.
Answerable by: a field service engineer, process engineer, or maintenance technician
The process node or technology generation of the 1809 EXL is not on record.
Answerable by: an OEM datasheet or a fab qualification report
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Last updated Oct 13, 2026.
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