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The Anafaze Board carrying LAM OEM part number 778-091827-011 is a dedicated multi-loop temperature and process controller printed circuit board used within LAM Research plasma etch and deposition platforms. The “Anafaze” designation derives from the original controller technology family that LAM integrated into its tool electronics, a multi-channel PID (proportional–integral–derivative) controller that reads multiple temperature sensors and drives multiple heater and cooling outputs in a single, coordinated control package. In a modern fab this board is the component responsible for holding chamber surfaces, chuck pedestals, gas lines, and process kit hardware at the precise set-points that a recipe demands.
Physically, the board is a populated PCB built around a microcontroller or dedicated control ASIC, analogue front-end circuitry for thermocouple and RTD inputs, output stages that command solid-state relays or analogue heater drivers, and a serial communications interface that links the controller to the tool’s host computer. It sits inside an electronics bay or control rack rather than in the vacuum environment, but its outputs reach deep into the process chamber, governing the thermal behaviour of the surfaces that contact the wafer and the plasma.
Because etch and deposition rates, selectivity, and film stress are all strongly temperature dependent, the Anafaze controller is not a peripheral convenience, it is part of the process-critical control chain. When it drifts or fails, the symptoms appear directly on the wafer, which is why fabs treat a verified spare of 778-091827-011 as standing inventory.
The board’s purpose is to convert temperature measurements into stable, closed-loop control of heating and cooling actuators across several independent zones simultaneously. Within a LAM tool it typically performs the following functions:
As an analogue-and-digital control board, the Anafaze controller must deliver both clean measurement and stable actuation. Its value in the tool rests on the integrity of its signal path and the reliability of its output stages.
The input front-end conditions low-level thermocouple voltages and RTD resistances, applies cold-junction compensation, and digitises them with sufficient resolution that fractions of a degree are distinguishable. Stable references, low-drift amplifiers, and good grounding all matter, because the controller cannot regulate a temperature more accurately than it can measure it.
On the actuation side, the board switches or modulates heater power and signals cooling demand, while a serial interface keeps the host informed. The output stages and communications link must remain stable through thousands of recipe cycles and the thermal stress of a continuously running tool.
Because temperature directly governs etch and deposition behaviour, a degraded Anafaze controller propagates straight into wafer-level results. A board that no longer holds set-point tightly can undermine an otherwise healthy process in the following ways:
The heater-driving output stages carry the heaviest electrical and thermal duty on the board. Repeated switching and elevated ambient temperatures degrade driver transistors, relay-control circuitry, and associated components, eventually producing a zone that fails to heat, heats continuously, or oscillates around set-point.
Ageing of the analogue front-end, reference components, or cold-junction circuitry causes the controller to misread temperature even when the sensor is healthy. The loop then regulates to the wrong value, so the chamber appears correct on the display while the actual surface temperature is off, or a phantom sensor-break alarm halts production.
Failing on-board regulators or filter capacitors can corrupt logic operation, while loss of non-volatile memory wipes stored tuning and configuration. A degraded serial interface can drop communication with the host, leaving the tool unable to download set-points or confirm process status and forcing an equipment fault.
Replacement should be carried out by a qualified equipment technician following LAM service procedures and the host fab’s electrical safety and ESD controls. A typical sequence is as follows:
Control electronics like the Anafaze board are low-cost relative to the lost output of an idle etch tool, which makes a verified spare one of the highest-value items a fab can hold. ESCT Fab Support supplies this controller as a stocked, tested alternative to chasing scarce OEM inventory. Working with ESCT offers:
It is a multi-loop PID temperature controller. It reads temperature sensors across the chamber and process kit, runs independent control loops, and drives heater and cooling outputs to hold each zone at its recipe set-point while reporting status to the tool host.
No. This board is supplied by ESCT Fab Support as a refurbished, reconditioned unit. It is cross-referenced to LAM OEM part number 778-091827-011 and verified to match the original in form, fit, and function, but it is not an original OEM-branded part.
Typical signs include a zone that will not reach or hold set-point, temperature readings that disagree with independent measurement, recurring sensor-break or over-temperature alarms, oscillating control, or loss of communication with the host. Any of these warrants inspection and a controlled swap test with a known-good board.
Yes. You must match the original switch, jumper, and node-address settings, then download or confirm the correct set-points and PID tuning parameters. Always validate loop behaviour and run qualification wafers before resuming production.
Yes. Because etch and deposition results depend on temperature, a controller that drifts or regulates poorly can shift etch rate, selectivity, uniformity, and critical dimensions, leading to out-of-specification wafers, scrap, and unplanned downtime.
Confirm the LAM OEM part number 778-091827-011 and the ESCT reference R-ES2022-147, and verify that the board fits your specific tool configuration. The ESCT team can help reconcile your existing board against these references before you commit to an order.
The LAM Anafaze Temperature Controller Board (OEM P/N 778-091827-011, ESCT P/N R-ES2022-147) is a multi-loop PID control PCB that holds the critical thermal zones of a LAM plasma etch or deposition tool at recipe set-point. It measures temperature, runs closed-loop control, drives heaters and cooling, and communicates with the host, making it a process-critical component whose health is reflected directly in wafer results. As a verified refurbished spare, it offers fabs a dependable, cost-effective way to keep ageing platforms running and protect against costly thermal-control downtime.
Disclaimer: This part is supplied by ESCT Fab Support as a reconditioned, OEM-compatible component, verified to the form, fit and function of Lam Research part number 778-091827-011. It is not an original OEM part and is not sold as one. It is not manufactured by, endorsed by, or affiliated with Lam Research, and all manufacturer names and part numbers are quoted for identification and compatibility purposes only.
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