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Key Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Lam Research Corporation |
| Part Number | 853-002499-200 |
| Board Classification | LonWorks Process Control Node Circuit Board |
| Input Voltage | 24 V DC nominal (±10%) |
| Power Consumption | 15 W maximum |
| Network Protocol | LonWorks ANSI/CTA-709.1 fieldbus protocol |
| Operating Temperature | −20 °C to +60 °C (−4 °F to +140 °F) |
| Storage Temperature | −40 °C to +85 °C (−40 °F to +185 °F) |
| Humidity Range | 5% to 95% non-condensing |
| Connector Interface | Gold-plated edge card contacts and multi-pin header pins |
| Tool Compatibility | Lam Research Etch, CVD, and Thin-Film Deposition Tool Racks |
Product Introduction & Supply Chain Strategy
The Lam Research 853-002499-200 LonWorks controller board provides real-time signal translation and node orchestration across semiconductor chamber systems. It handles critical feedback loops between local sensors, mass flow controllers, and main system processors where deterministic execution directly affects wafer yield consistency.
Securing this unit as New Surplus maintains fab line readiness while avoiding extended OEM lead times on legacy hardware. Refurbished boards present latent failure risks due to thermal fatigue and degraded surface-mount capacitors from years of cleanroom operation. Keeping 1 to 2 units on-site as strategic buffer stock prevents unscheduled tool shutdowns that can cause severe wafer loss and production bottlenecks.
Installation & Configuration Guide
High-Voltage & Static Sensitivity Hazard
Turn off all power to the semiconductor equipment card cage and wear a grounded ESD wrist strap before touching this assembly to prevent immediate electrostatic discharge damage.
1
Lock-Out/Tag-Out & Safety Verification
Prerequisite
1.Lock-Out/Tag-Out & Safety Verification:Prerequisite.
Execute full LOTO procedures on the wafer tool power distribution unit (PDU). Verify zero potential across the local 24 V DC bus terminals using a calibrated digital multimeter before accessing the rack enclosure.
2
Document Existing Unit Settings
5 min prep
2.Document Existing Unit Settings:5 min prep.
Take a high-resolution photo of the original card’s DIP switch banks, jumper positions, and cable routings before disconnecting any wiring or extracting the board.
3
Extract the Faulty Module
Step Verification: No bent pins
3.Extract the Faulty Module:Step Verification: No bent pins.
Unscrew the faceplate retention fasteners. Press the top and bottom ejector levers outward simultaneously to disengage the board from the backplane, then slide it straight out along the card guides.
4
Configure & Seat New Module
Step Verification: Flush connector seating
4.Configure & Seat New Module:Step Verification: Flush connector seating.
Replicate all DIP switch and jumper configurations from the old board onto the 853-002499-200. Align the card edges with the guide tracks and slide the unit inward until it seats fully flush into the backplane connector.
5
Power-On & Diagnostic Verification
Step Verification: Solid green RUN LED
5.Power-On & Diagnostic Verification:Step Verification: Solid green RUN LED.
Restore 24 V DC power. Observe the boot sequence to verify that the main power LED turns solid green and communication activity indicators flash normally during system initialization.
853-002499-200
853-002499-200
Firmware/Software Versions & Upgrade Notes
- Recommended Firmware Version: Revision 4.20 or system-matched tool software image.
- Compatibility Notice: Software revisions must match overall tool firmware requirements; mismatched versions can cause node registration timeouts or prevent the main tool controller from executing process recipes.
- Upgrade/Downgrade Caution: Never perform firmware flashes while the board is installed in an active production rack. Flashing over an active backplane can corrupt bootloader routines—always program and verify revision levels on an offline test rig prior to installation.
Frequently Asked Questions (FAQ)
Is this 853-002499-200 PCB genuinely brand new, or has it been pulled from a decommissioned tool? This is a New Surplus unit. It has never been installed or operated in a live semiconductor manufacturing environment. All inventory originates from verified spare parts stock reserves or cancelled fab project inventory. Each unit passes physical inspection and static verification in original ESD packaging without secondary board-level repairs.
Why should we choose New Surplus over a refurbished or repaired module? Refurbished modules frequently carry hidden stress from extended thermal cycles and aged passive components. Thermal fatigue in surface-mount components can lead to intermittent micro-faults during chamber processing. New Surplus provides full OEM reliability (10–15 years expected operational life) while avoiding high OEM list pricing.
Is this card safe to hot-swap while the tool frame is powered? No. Hot-swapping is strictly prohibited on non-hot-plug backplane architectures. Removing or inserting this module while the backplane carries 24 V DC can generate destructive voltage transients, blow onboard protection fuses, or corrupt active memory registers on adjacent system cards. Always isolate system power prior to extraction.
How do I transfer the node address to the new 853-002499-200 card? The node address is set via onboard DIP switch banks and jumper blocks on the surface of the PCB. Replicate the exact physical switch and jumper patterns from your original card onto the new assembly before mounting so the tool controller recognizes the module automatically upon boot.
What warranty coverage is included with this New Surplus board? Every 853-002499-200 unit comes with a 1-year replacement warranty. If any operational anomaly or hardware defect occurs under standard operating conditions, we replace the unit directly from our warehouse buffer stock to keep tool downtime minimal.
