Thermco 4104 3-Zone Tube Furnace Thermal Probe & Wiring Block Set 15 Probes

Thermco 4104 3-Zone Tube Furnace Thermal Probe & Wiring Block Set 15 Probes

This is a surplus lot of thermal temperature probes and contact/wiring block assemblies pulled directly from a Thermco 4104 3-zone tube furnace system. The lot includes 15 ceramic-sheathed thermal probes and 11 screw-terminal wiring/contact block assemblies, sold together as shown. Each assembly pairs one or more ceramic probes with a multi-terminal block mounted on an aluminum bracket backed by a red PCB-style board — the format used in zone temperature sensing within the Thermco furnace.

Specifications & What's Included

• Compatible system: Thermco 4104 3-Zone Tube Furnace
• Quantity – Thermal Probes: 15 ceramic-sheathed temperature probes
• Quantity – Contact/Wiring Blocks: 11 assemblies
• Probe construction: Ceramic-sheathed rod probe with red heat-shrink tip and red/black lead wires
• Wiring block construction: Multi-position screw-terminal block (black housing) mounted on red PCB and aluminum bracket with mounting holes
• Lead wire colors: Red, black (and in some assemblies a third wire visible)
• Lot sold as-is — no additional cables, connectors, or mounting hardware included

Applications

The Thermco 4104 is a 3-zone horizontal tube furnace used in semiconductor wafer processing — primarily silicon oxidation, diffusion, and annealing operations. Zone temperature probes like these are placed at the entrance, center, and exit zones of the furnace tube to monitor and regulate temperature uniformity along the heated length. Each probe feeds temperature data back to the furnace controller, which adjusts the heating elements to maintain tight zone tolerances critical for consistent diffusion or oxide growth. These assemblies are purpose-built replacement or spare parts for the Thermco 4104 platform and are sought by semiconductor fabs, university research labs, and equipment refurbishers maintaining legacy Thermco diffusion furnace systems.