Reliability Testing refers to simulating the actual use, transportation and storage environments of products throughout their full life cycle, so as to test the capacity of products to perform specified functions under specified conditions within specified timeframes. Its core is to verify the product’s stability, durability and failure resistance. It is widely applied in industries including electrical and electronics, automotive, aerospace, semiconductors, medical devices and more.

Core Objectives

1. Early Defect Identification: Detect potential flaws in design, materials and manufacturing processes during product R&D or pre-mass-production phases, preventing large-scale failures after mass launch.

2. Performance Compliance Verification: Confirm whether products meet reliability requirements specified by industrial standards, internal corporate standards or customer technical agreements.

3. Product Design Optimization: Guide design improvements via test data to extend product service life and enhance environmental adaptability.

4. Market Access Support: For products in certain sectors (automotive, medical, military industry, etc.), reliability test reports are mandatory supporting documents for product certification and market access.

Main Test Categories

Based on simulated environments and testing purposes, reliability testing is divided into the following major categories:

1. Environmental Reliability Testing

• Simulate impacts of natural environments including temperature & humidity, air pressure, salt spray, mold, dust and sand on products.

• Common test items: High-low temperature cycling test, temperature-humidity alternating test, salt spray corrosion test, rain & dust ingress test, low air pressure test.

2. Mechanical Reliability Testing

• Simulate mechanical stresses such as vibration, shock, drop and collision generated during transportation, installation and usage.

• Common test items: Random vibration test, sine vibration test, mechanical shock test, drop test, plug & pull endurance test.

3. Electrical Reliability Testing

• Verify product stability under electrical stress, applicable to electronic components, circuit boards, power supplies and other products.

• Common test items: High-low voltage surge test, insulation resistance test, dielectric withstand voltage test, Electromagnetic Compatibility (EMC) test, electrical cycling aging test.

4. Service Life Reliability Testing

• Rapidly evaluate product service life through accelerated aging and other methods.

• Common test items: Accelerated Life Test (ALT), constant stress test, step stress test, fatigue life test.