17 Reliability Tests: 6 / Mechanical Property 6 / Environmental Test 5 Endurance
Reliability Test is the process that can identify potential failure mechanisms of product, evaluate its failure rate, and ensure that the product does not exhibit any failure mechanisms during normal use.
Mechanical Test
| Test Equipment | Test Item | Test Purpose | Test Standard | Test Ability |
|---|---|---|---|---|
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Vibration Test | Verify the robustness of the mechanical structure and the stability of the electrical connections. The vibration load of the power module during application is simulated and the vibration resistance of the power module is verified in the presence of failure modes such as structural detachment and material fatigue. | IEC 60068 2-6 |
Frequency Range: 1~3500Hz Amax: 981m/s X, Y, Z directions test |
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Shock Test | Verify the integrity of the mechanical structure and the stability of the electrical connections | IEC 60068 2-27 |
Acceleration range：0~15000m/s2 Pulse Width:0.5~20ms X, Y, Z directions test |
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Terminal Strength | Evaluate whether the product terminals have sufficient mechanical strength. | The appearance is not damaged, and the PIN is not falling off. |
Temp. Range: -40~200°C Tension Range: 0~960N.m
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Mounting Strength | Evaluate the reliability of the product in condition of fixed torque. | Shell integrity, no rupture0~350°C |
Torque Range: 0.2~20N.m
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Solderability | Evaluate the weldability of the product | GB/T 2423.28 |
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Resistance to Solder Heat | Evaluate the heat resistance of product pins | GB/T 2423.28 |
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Environmental Test
| Test Equipment | Test Item | Test Purpose | Test Standard | Test Ability |
|---|---|---|---|---|
|
High Temperature Storage (HTS) | Evaluate the reliability and electrical performance of products in condition of high temperature. | IEC 60749-6 | Temperature range: 60~300°C |
| Latent Heat Storage (LHS) | Evaluate the reliability and electrical performance of products in condition of low temperature. | JESD22-A119 |
Temperature range: -70~150°C Humidity range: 20~98%RH |
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| Highly Accelerated Stress Test (HAST) | Evaluate the lifespan and electrical performance of products in condition of environmental stress and working stress. | IEC 60068-2-66 |
Temperature range: 105~1429°C
Humidity range: 75~100%RH Pressure range: 0.02~0.196MPa |
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Temperature Humidity Storage (THS) | Evaluate the reliability and electrical performance of products in condition of constant temperature and humidity. | IEC 60068-2-67 |
Temperature range: -20 ~ 180°C Humidity range: 10 ~ 98% RH |
| Temperature Cycling Test (TCT) | Used to simulate the impact of external temperature changes on products, verify the overall structure and materials of power devices or modules. | IEC 60749-25 |
Temperature range:-70 ~ 180°C
Temperature change rate: 26°C/min |
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| Temperature Shock Testing (TST) | Verify the resistance of IGBT to mechanical stress in condition of passive temperature changes. | IEC60068-2-14 |
High temperature range: 60 ~ 205°C
Low temperature range: -77 ~ 0°C Temperature conversion phase time:10s |
Endurance Test
| Test Equipment | Test Item | Test Purpose | Test Standard | Test Ability |
|---|---|---|---|---|
|
High Temperature Reverse Bias (HTRB) | Evaluate the leakage current of the power device in condition of high temperature and reverse bias conditions. | IEC 60749-9 |
Temperature range: 20 ~ 200°C
Voltage range: 0-2000V |
| High Temperature Gate Bias (HTGB) | Verify the stability of gate leakage current, the test object is the IGBT gate oxide layer. | IEC 60749-9 |
Temperature range: 20 ~ 200°C
Voltage range: 0 ~ 30V |
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High Humidity High Temperature Reverse Bias (H3TRB) | Also known as Double 85 Test, it is mainly used to test the impact of humidity on the long-term characteristics of power devices. | IEC 60749-9 |
Temperature range: 20 ~ 100°C
Humidity range: 25 ~ 98% RH Voltage range: 0 ~ 2000V |
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Power Cycling (PC min) | Evaluate the reliability and lifespan of the device in condition of repeated thermal stress. (Minute-level) | IEC 60749-34 |
Current output: four channels
Single channel maximum current 600A Maximum output current 2400A |
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Power Cycling (PC sec) | Evaluate the reliability and lifespan of the device in condition of repeated thermal stress. | IEC 60749-34 |
Current output: four channels
Single channel maximum current 600A Maximum output current 1800A |
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