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Wafer Level Burn-In

WLBI3810

Wafer Level Burn-in System


Semight WLBI3810 Wafer Level Burn-In System is a high-end burn-in test equipment specifically designed for SiC and GaN wafers, featuring efficient and precise testing capabilities. This system can simultaneously perform High-Temperature Gate Bias (HTGB) and High-Temperature Reverse Bias (HTRB) burn-in tests on 9 wafers, with a testing time range from several minutes to thousands of hours, flexibly adapting to the burn-in requirements of different products. This equipment features a fully automated loading and unloading system, incorporates a three-cassette design, supports seamless test mode switching, and automatically adjusts burn-in conditions, ensuring both efficiency and continuity throughout the testing process.

The system is capable of high-precision detection of the threshold voltage (Vth) for each die, ensuring the accuracy of test data. Each test channel is equipped with an independent over-current protection function, effectively safeguarding the safety of the devices under test. Additionally, the system can generate detailed map data, providing users with comprehensive performance analysis and quality control references. The WLBI3810 system provides reliable solutions for diverse testing needs, from stable burn-in tests in large-scale batch production to flexible configuration in R&D.

Features

  • Automated Loading and Unloading

    Fully automated wafer handling minimizes manual intervention, boosting efficiency and accuracy
  • Precise Probing

    Delivers ±25μm probe mark repositioning accuracy for reliable testing
  • Comprehensive System Features

    Supports map data binding for traceability and testing up to 2560 dies simultaneously
  • Multimode Burn-in

    Automatically switches between HTGB and HTRB modes
  • Leakage Current Monitoring

    Igss and Idss leakage current moitoring
  • Integrated Testing Functions

    Includes Vth parameter testing for in-depth analysis
  • Exceptional Measurement Accuracy

    Offers maximum resolution of 0.1nA
    Maximum leakage current accuracy 0.5nA
  • Precise Temperature Control

    Ensures uniformity within ±2℃@ TR~175℃, accuracy within 1℃, and resolution of 0.1℃

Functions and Advantages

  • System Configuration

    The system accommodates up to nine burn-in stations, each dedicated to a single wafer and independently controlled. This design enables multiple stations to operate in different modes simultaneously, and supports various burn-in verifications by running the burn-in plan.





WLBI3810(RB+GB)System Configuration

No.

Model

Description

Specification

1

Wafer Level Burn-in System Loader

WLBI3810-AL

- Supports fully automatic wafer loading and unloading

- Can be adapted to SMIF docking with customer's overhead transport system

- Automatically obtains wafer status within cassette

- Wafer ID reading

- Wafer flattening

2

Wafer Level Burn-in System Handler 1

WLBI3810-H1

- Implement wafer transfer between the loader and burn-in machine layers 1-3

3

Wafer Level Burn-in System Handler 2

WLBI3810-H2

- Implement wafer transfer between the loader and burn-in machine layers 4-9

4

Wafer Level Burn-in System Burn-in Chamber

WLBI3810-M

- Includes burn-in system cabinets and their automation parts.

- 6&8 inch wafers

- Temperature RT~175℃

- Temperature uniformity ≤±2℃, accuracy ≤1℃, resolution 0.1℃

- Supports pin mark repeatability ≤ ±25μm

- Supports nitrogen protection to prevent high-voltage arcing and Pad oxidation

Note: HTGB+HTRB: Full configuration with 9 stations

5

Wafer Level Burn-in System Single Layer

WLBI3810-L

- High-precision leakage current testing, with leakage current resolution up to 0.1nA

- Supports Map data binding for traceable data

- HTGB and HTRB automatically switchable, with negative voltage applied to the Gate during RB aging

- Igss and Idss leakage configuration can be scanned

- Integrated Vth parameter testing

- Flexible configuration of burn-in plans

- Support for SECS/GEM communication interface

- Software supports local data and database upload, and supports EAP integration

- Supports CP MAP data import

- Supports online editing of test Recipe

- Software supports three-level permission management and multi-account management

- 1 year free maintenance

Note: HTGB+HTRB fully configured with 9 workstations

6

Wafer  Level Burn-in System Fixture

WLBI3810-F

- Supports 6&8 inch wafers

- For SiC wafer aging: HTGB+HTRB

- Fixture maximum withstand voltage 2000V (maximum withstand voltage may be affected by individual die size)

- Full Touch, aging all Die at once, up to 2112 Die (2560 Die requires customization)

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Details
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