AMAT 0190‑49758 PRE‑ALIGNER
Overview
AMAT 0190‑49758 PRE‑ALIGNER is a core positioning component for semiconductor EFEM front‑end modules. It performs wafer pre‑alignment and notch / flat edge angle recognition. Installed between the equipment front‑end robot and process chamber, it provides positional reference for wafer handling. The AMAT 0190‑49758 PRE‑ALIGNER completes wafer center correction via optical scanning and rotating mechanism, reducing robot handling offset and minimizing production losses such as wafer chipping and misalignment. Designed for 300 mm wafer processes, this unit is widely deployed on front‑end units of AMAT etch and deposition equipment, serving as a critical part to guarantee wafer transfer consistency across the fab production line.
Technical Specifications
| Wafer Compatibility | 300 mm silicon wafer, notch positioning supported, SEMI‑standard wafer specification compliant |
| Position Detection Method | Optical edge scanning, recognizes wafer edge profile and notch features |
| Repeat Positioning Accuracy | Angular repeat accuracy ≤±0.1°, center repeat accuracy ≤±2 μm |
| Drive Type | Built‑in brushless DC rotary motor with closed‑loop encoder feedback control |
| Operating Environment | Class 1 cleanroom, operates under atmospheric pressure outside vacuum |
| Communication Interface | Internal equipment bus connected to EFEM controller unit |
| Mounting | Rack‑mounted integrated assembly, matches front‑end module mounting position |
| Power Consumption | Low‑voltage DC power supply, compatible with semiconductor equipment internal power architecture |
Core Advantages
- Short detection cycle reduces pre‑alignment time per wafer and improves overall EFEM throughput.
- Non‑contact optical detection avoids contact with wafer film layers to eliminate scratching and particle contamination risks.
- Closed‑loop motor control keeps positioning drift under control during long‑term continuous production and lowers frequent calibration requirements.
- Modular integrated construction allows independent disassembly and maintenance without full EFEM unit teardown.
- Output signals directly interface with equipment robot control system and reduce host program adaptation workload.
Product Features
- AMAT 0190‑49758 PRE‑ALIGNER integrates optical sensor assembly and rotary drive unit into one complete assembly.
- Real‑time transmission of wafer center coordinate and notch angle data to host control unit.
- Edge anomaly detection capability identifies chipped or edge‑damaged wafers and sends alarm signals to equipment alarm system.
- Metal housing meets semiconductor clean‑room requirements with anti‑particle‑release surface treatment.
- Internal cables feature anti‑bend protection for high‑frequency continuous front‑end operation conditions.
Supports periodic zero‑point calibration via equipment software to compensate positional deviation caused by mechanical wear.
Application Fields
- Front‑end wafer pre‑alignment for 300 mm wafer etcher EFEM
- Front‑end transfer units of PVD and CVD thin‑film deposition equipment
- Wafer loading alignment for semiconductor metrology and inspection tools
- Front‑end‑module retrofitting and replacement for fab mass‑production tools
- Semiconductor spare‑parts replacement and equipment refurbishment projects
Product Comparison
| AMAT 0190‑49758 PRE‑ALIGNER | Targeted for 300 mm mass‑production tools, optimized for high‑speed continuous operation, high‑precision angle detection, complete integrated drive‑sensor assembly for direct machine installation. |
| 200 mm Pre‑Aligner Assembly | For 8‑inch production lines, smaller footprint, lower positioning specifications, incompatible with 300 mm wafers. |
| Simplified Center‑Finding Module | Only outputs coordinates without rotary actuator; requires external rotary stage, suitable for modification projects, not for standard EFEM drop‑in replacement. |
Matching Accessories
- 0190‑17208 FES Vacuum Handler Assembly
- 0010‑76968 Center Finder Board Assembly
- 0040‑48594 300 mm Electrostatic Chuck Assembly
- 0100‑90451 EFEM Control Board Assembly
- 0050‑00828 CCD Laser Harness Assembly
0020‑48972 300 mm Face Plate
FAQ
Q: Can AMAT 0190‑49758 PRE‑ALIGNER directly replace older‑generation pre‑aligners?
A: Verify host tool model, firmware version and interface definition. Even if mechanical mounting dimensions match, equipment control program updates may be necessary. Direct blind replacement is not recommended.
Q: What are typical causes for misalignment on AMAT 0190‑49758 PRE‑ALIGNER?
A: Dust contamination on optical lens surface, encoder zero‑point offset, increased mechanical motor clearance, or loose wiring harness can induce positioning offset. Perform lens cleaning and zero‑point calibration first for troubleshooting.
Q: What key information shall be confirmed when purchasing AMAT 0190‑49758 PRE‑ALIGNER?
A: Confirm host equipment model, part revision number, wiring harness configuration, clean‑room class requirements, and whether matched boards or cables are required.
Q: Does AMAT 0190‑49758 PRE‑ALIGNER support 200 mm wafers?
A: This model is natively designed for 300 mm wafers. Hardware structure does not support 200 mm substrates; compatibility cannot be achieved via parameter adjustment.
Q: How to perform incoming inspection after receiving AMAT 0190‑49758 PRE‑ALIGNER?
A: Inspect housing and optical window for scratches or impact damage; check connector integrity. Execute repeated pre‑alignment cycles on‑tool and verify angular and center repeat‑accuracy specifications.
Q: “Wafer not detected” alarm during pre‑alignment, does this mean the PRE‑ALIGNER assembly itself is defective?
A: Not necessarily. First check light‑source power supply, optical path obstructions, and robot hand placement position. Confirm external conditions before judging assembly failure.
Q: What are the key points for routine maintenance of AMAT 0190‑49758 PRE‑ALIGNER?
A: Clean optical inspection window periodically inside clean‑room environment, inspect cables for bending wear, and run zero‑point calibration according to tool manual. Disassembly of internal motor and encoder sub‑components is prohibited.
Recommended AMAT Part Numbers
- 0190‑49758 PRE‑ALIGNER
- 0190‑17208 VACUUM HANDLER ASSY
- 0010‑76968 CENTER FINDER MODULE
- 0040‑48594 300MM MCA E‑CHUCK
- 0100‑90451 CONTROL BOARD ASSY
- 0050‑00828 HARNESS ASSY
- 0020‑48972 FACE PLATE 300MM
- 0190‑22205 TEMP CONTROLLER ASSY
- 0190‑26495 TEMP CONTROLLER UNIT
- 0010‑00215 PHASE MAG DETECTOR ASSY
- 0040‑76426 GROUND HARNESS ASSY
- 0020‑34525 LOAD LOCK PLATE ASSY
- 0190‑08248 CERAMIC BEARING ASSY
- 0010‑01152 AIR CYLINDER ASSY
- 0090‑07485 SERVER ASSEMBLY
Precautions
- AMAT 0190‑49758 PRE‑ALIGNER is a high‑precision opto‑mechanical assembly. Disassembling internal components will destroy factory calibration parameters. Do not open the assembly housing without professional repair capabilities.
- All mounting operations must be performed inside clean‑room environment; never touch optical window with bare hands.
- Verify power‑supply voltage and bus pin definition before power‑on. Incorrect wiring will damage sensor and motor units.
- Store under controlled temperature‑humidity conditions; avoid long‑term storage in humid or dusty surroundings.
- Protect cable routing during installation and removal to prevent insulation damage caused by mechanical squeezing.
- Full equipment calibration procedure must be completed after replacement before releasing to mass‑production wafer processing.
Product Tags
AMAT 0190‑49758,0190‑49758 PRE‑ALIGNER,wafer pre‑aligner, semiconductor pre‑aligner, EFEM component, 300mm wafer positioning module, semiconductor equipment spare parts, wafer pre‑centering assembly, Applied Materials pre‑aligner, wafer edge‑finding unit
