LA-SiC Series Furnaces

High Temperature
Production Laboratory Furnaces

The LA-SiC series furnace is a versatile computer-controlled high temperature furnace for production and laboratory applications. Heating is accomplished by silicon carbide (SiC) infrared heating elements with microprossor-based SCR power controllers. Process atmosphere is controlled much like a clean room: pressurized gas is pushed through the heating chamber insulation providing a pre-heated, laminar flow for a uniform, stable atmosphere. Precise temperature is maintained by control thermocouples above the belt in each zone quickly sensing changing conditions. IR SiC elements inside the chamber instantaneously adjust their output to achieve tight temperature control: each load through the furnace sees the same temperature.

Computer Controlled. The furnace is operated via TPS FurnaceControl software installed on a robust industrial rack mount furnace computer. The process engineer can easily vary process parameters using the sophisticated PID and power control parameters in the software. An almost infinite number of recipes and profiles can be labeled and stored for ready access on the furnace computer. The software includes 3 levels of password protected control (Engineer and Operator) and logs each change in recipe load or furnace state useful for troubleshooting product and process performance.

The furnace software operates in a Microsoft Windows environment. The program and all settings and recipes are stored on the rack mounted industrial computer hard drive. The computer is complete with a high resolution color graphic screen, full size keyboard/mouse and/or touchscreen interface. The furnace includes two (2) local USB ports at the computer below the control console for connecting profilers and jump drive storage devices.

Laboratory and Production Applications. The LA-series-SiC can process surface mount devices, substrates, wafers, PCBs, metal, ceramic, glass or polycarbonate parts for electronic package sealing, thermo-setting polymer curing, reflow soldering, copper and hybrid/thick film firing, brazing, brazing, tempering and metal sintering applications, or almost any kind of general thermal processing requiring precision temperature control in a controlled atmosphere environment. The LA-series-SiC can also be used for precise curing of coatings on optical lenses, advanced thin film crystalline silicon, cadmium telluride (CdTe alloys) and certain copper indium diselenide (CIS-alloys) as well as many other production applications.

Furnace Arrangement

ParameterLA-306, LA-309, LA-310
Load Station 38 cm (15 inches)
Entrance Baffle with Venturi Exhaust38 cm (15 inches)
IR Heating Chamber, Zone 119 cm (7.5 inches)
IR Heating Chamber, Zone 238 cm (15 inches)
IR Heating Chamber, Zone 319 cm (7.5 inches)
Exit Baffle38 cm (15 inches)
CACT Closed Atmosphere Cooling Chamber76 cm (30 inches)
Unload Station38 cm (15 inches)

Belt Width6 inches
(15.2 cm)
9 inches
(22.8 cm)
10 inches
(25.4 cm)
Entrance Exhaust Stack1 standard1 standard1 standard
Exit Exhaust Stack1 stanmdard1 standard1 standard
Edge Heatersn/aoptional1 pair standard

Furnace Specifications

ParameterLA-306-SiC, LA-309-SiC, LA-310-SiC
Process Gas CDA, Nitrogen (-N), or noncombustible Forming Gas (-FG)
Control Zones3 zones
Heating Chamber length76 cm (30 inches)
Cooling Chamber36 cm (30 inches) CACT – CDA or N2 convective and radiant cooling, exterior fan heat removal.
Belt Speed2.5-25 cm/min (1-10 ipm)
5.0-50 cm/min (2-20 ipm)
10-100 cm/min (4-40 ipm)
(or as specified)
Conveyor Belt BNV- low mass, stabilized Nichrome-V
Exhaust Improved venturi exhaust stack(s) to reduce process gas consumption.
Max Design Temperature 1150 C
ElectricalAll models include universal transformers which accommodate 380-500 Vac and 50/60 Hz frequency anywhere in the world, allowing furnace relocation without external equipment. All furnace systems are phase balanced to improve facility efficiency. IR lamp controls automatically keep IR spectrum constant.

Facility Requirements

Power Configuration
3 phase, 50/60 Hz
Connected LoadTyp Operating @ 850 C
380-400 Vac
415 Vac
440-500 Vac
56.6 kW, 76.1 A
65.0 kW, 80.0 A
76.4 kW, 78.2 A
30.2 kW, 40.5 A
34.4 kW, 42.3 A
40.4 kW, 40.1 A
ParameterProcess SectionTyp 425 C operation (CDA exchange rate: 2x, balanced flow)Low O2 operation, 850 C (N2/FG exch rate:3x, 50 sLpm excess flow)
Process Gas SupplyGas 1357 Lpm @ 5 bar
(756 scfh @ 70 psig)
96 sLpm @ 5 bar
(203 scfh @ 70 psig)
Gas 2 (Heating Chamber only)n/a69 sLpm @ 5 bar
(146 scfh @ 70 psig)
Process Gas ExhaustGas 1 + Gas 2357 sLpm
(756 scfh)
115 sLpm
(243 scfh)
Enclosure VentilationFurnace Cabinet, vent to
room or exhaust system
260 Lpm @ 30 C   (550 cfm @ 86 F)

Length3.01 m (120 inches)
Width1.1 m (42.5 inches)
Height (min-max)1.74-1.9 m (68.4-74.9 inches)*
Adjustable Conveyor Height91.4 cm +10/-6.3
(36 inch +4.0/-2.5)
91.4 cm +10/-0.0
(36 inch +4.0/-0.0)
Weight730 kg (1600 LB)

*minimum height with castors off; maximum  height with chamber raised using MCL.

LA-SiC Standard Features and Options

Standard OEM features and options are listed below. Click on hyperlink for feature details:

Code DescriptionCode DescriptionCode Description
CXE15Load Extension, 380 mmCXX15Unload Extension, 380 mmDGODual Gas Operation (annealing, thick film)
EMElement Monitoring SystemOAOxygen AnalyzerAFRCoalescing Air Filter Regulator
MAMoisture AnalyzerEHEdge Heaters (-309, -310)MCLMotorized Chamber Lift
LTProcess Ready Light TowerCB-33-PH Circuit Breaker DisconnectPH1-5Product Clearance (1"-5" available)

Many more options can be selected to configure the furnace for your particular application.

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