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Wafer Level Burn-In

WLBI3800

Wafer level Burn-in System


The WLBI3800 Wafer Level Burn-in System is a high-end, specialized SiC wafer burn-in testing solution capable of performing High-Temperature Gate Bias (HTGB) and High-Temperature Reverse Bias (HTRB) burn-in on up to 3 wafers simultaneously. It supports a wide range of burn-in durations, from a few minutes to several hours, and can extend to thousands of hours, meeting the burn-in requirements of various products. The system integrates an automated loading and unloading system with a dual-cassette design for seamless switching. It features automatic adjustment of burn-in conditions and precise threshold voltage (Vth) measurement for each die. Each channel is equipped with independent overcurrent protection to ensure the safety of the devices under test. Additionally, the system generates Map data for detailed performance analysis and quality control. It provides stable and reliable burn-in testing support for mass production and flexible configuration options for R&D applications. 


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 2112 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
  • Precise Temperature Control

    Ensures uniformity within ±3℃, accuracy within 1℃, and resolution of 0.1℃

Functions and Advantages

  • System Configuration

    The system supports up to three independent layers, each equipped with its own fixture and independently controlled circuits. This design allows each layer to operate in different modes, enabling flexible burn-in verification through customizable burn-in plans.





The specific configuration is as follows:

No.

Module

Part Number

Description

1

System Cabinet

WLBI3800-M

Includes system rack, electrical cabinet, and loading/unloading machine

Supports fully automated wafer loading and unloading

Achieves probe mark repositioning accuracy of ±25μm

Supports map data binding with traceable data

Automatically switches between HTGB and HTRB modes

Test Igss and Idss leakage

Integrates Vth parameter testing

Offers flexible configuration of burn-in plans

Supports SECS/GEM communication interface

Software supports local data and database uploads, and EAP integration

Supports CP map data import

Supports online editing of test recipes

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

Note: HTGB + HTRB: Fully configured with 3 layers

2

Burn-in Layer

WLBI3800-L

High-precision leakage current testing with a maximum resolution of 0.1nA.

Supports nitrogen protection to prevent high-voltage arcing and pad oxidation.

Temperature uniformity ≤±3℃, accuracy ≤1℃, resolution 0.1℃.

High-density probe cards and support for high-voltage chuck.

High-precision and high-reliability heating and temperature control system.

Compatible with 6- and 8-inch wafers.

Full touch interface allowing simultaneous burn-in up to 2112 dies.

One year of free maintenance.

Note: HTGB + HTRB: Fully configured with 3 layers.

 

3

Burn-in Fixture

WLBI3800-F

Designed for SiC wafer burn in: HTGB + HTRB

Supports 6- and 8-inch wafers

Supports up to 2112 dies

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Details
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