Automated Test Equipment (Automatic Test Equipment,ATE) it is an automated electronic test equipment, widely used in the electronics manufacturing industry for integrated circuits (Integrated Circuit,IC) and other products for comprehensive testing of functionality and performance. The Leakage test is an important part of the ATE system, which is used to detect the leakage current of the IC device in the non-working state. This article will introduce the definition, principle, steps and application of Leakage testing in integrated circuit production.

1. Leakage Test Definition

in an integrated circuit device, a minute leakage current may be generated in a non-operating state due to limitations in materials and processes. The Leakage test is to use the ATE system to supply power to the device under test and detect the tiny leakage current drawn or discharged in its non-working state.

2. Leakage test principle

Leakage testing is mainly based on the internal structure and material characteristics of integrated circuit devices. When the device to be tested is in a non-working state, a small leakage current is generated due to local carrier diffusion and drift caused by the internal structure of the element such as a transistor. These tiny leakage currents are detected by using precision instruments and high-sensitivity sensors, and whether they are qualified or not is judged according to prescribed standards.

3. Leakage test steps

this includes the following main steps:

• configuration: Set the ATE system parameters to fit the chip specifications under test.
• Condition setting: determine the required conditions (such as temperature, pressure supply, etc.) for the chip to be tested to enter the non-working state.
• Supply control: Provide the corresponding input signal to the chip through the ATE system and keep it stable.
• Detection: The use of high-sensitivity sensors to monitor the small leak point of the chip under test, and the results are fed back to the ATE system.
• Analysis and judgment: Analyze the obtained data according to the standards and specifications, and judge whether it meets the relevant requirements.

4. Importance in the production of integrated circuits

Leakage testing plays an important role in the integrated circuit (IC) production process. It can effectively evaluate product quality and prevent potential problems, and plays a key role in ensuring product reliability and long-term operation stability. Only after strict and reliable Leakagetesting, in order to ensure that the quality of IC products to meet corporate standards, enhance customer satisfaction, beat competitors, gain market share.

In a word, Leakage testing is an indispensable part of ATE system, which is of positive significance to improve the quality of IC devices and the competitiveness of enterprises.