The quality and reliability of a product are substantially affected by product design. When designing a product, NPC uses the quality and reliability data, which we have accumulated over the years, taking your operating conditions into consideration. Then we check the product using the reliability test that is in compliance with "JEITA EIAJ ED-4701" or "MIL-STD-883". We periodically collect the test results and feed them back to the design department and the product process department in an effort to improve reliability. The following table shows the requirements of the standard reliability test of NPC.
[Reliability test requirements (standard)]
| Test item | Test Method | Criteria | |||||
| Reference standard |
Test condition | LTPD | Test period | Number of samples |
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| High-temperature storage | JEITA EIAJ ED-4701 MIL-STD-883 |
Ta=125°C | 3% | 1000hr | 77 | 0-1 criteria Electrical specification standard |
|
| Operating life | JEITA EIAJ ED-4701 MIL-STD-883 |
Ta=125 VDD=MAX |
3% | 1000hr | 77 | 0-1 criteria Electrical specification standard |
|
|
High-temperature-high-humidity bias |
JEITA EIAJ ED-4701 MIL-STD-883 |
Ta=85°C RH=85% VDD=MAX |
5% | 1000hr | 45 | 0-1 criteria Electrical specification standard |
|
| Saturated steam pressure (autoclave) |
JEITA EIAJ ED-4701 | Ta=121°C RH=100% 2 atm. |
5% | 100hr | 45 | 0-1 criteria Electrical specification standard |
|
| Temperature cycle | JEITA EIAJ ED-4701 MIL-STD-883 |
-55°C/RT/125°C 30min/5min/30min |
10% | 100cycle | 22 | 0-1 criteria Electrical specification standard |
|
| Thermal shock | JEITA EIAJ ED-4701 MIL-STD-883 |
Ta=0°C~100°C | 10% | 15cycle | 22 | 0-1 criteria Electrical specification standard |
|
| Solder heat resistance | JEITA EIAJ ED-4701 JIS-C0050, C0054 |
Insertion type Ta=260°C With lead dipped SMD type Ta=240°C (non-lead-free) Ta=260°C (lead-free) IR reflow |
10sec | 11 | 0-1 criteria Electrical specification standard Exterior standard |
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| Solderability | JEITA EIAJ ED-4701 MIL-STD-883 |
Ta=215°C | 3sec | 11 | 0-1 criteria 95% or more of outer lead must be wetted with solder. |
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| Pin strength | Tensile | JEITA EIAJ ED-4701 | Insertion type: 5 or 10N SMD type: 1 or 2.5 N |
10sec | 5 | 0-1 criteria Electrical specification standard Exterior standar |
|
| Bending | 90 degree SSMD types are not subjected. |
back and forth twice | 5 | 0-1 criteria Must not crack Electrical specification standard |
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| Resistance of marking to solution | JEITA EIAJ ED-4701 JIS-C0052 |
Ta=23°C (IPA used) | 5min | 5 | 0-1 criteria Marking specification |
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| Electrostatic discharge | JEITA EIAJ ED-4701 | Capacitor charge method C=200pF,R=0Ω Applied 5 times Positive and negative strengths of all pins Ta=RT |
5 | All pins, ±300 V min. |
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| Latchup | JEITA EIAJ ED-4701 JESD 17 |
Pulse voltage method VDD=MAX,Ta=RT Positive and negative strengths of all input and output pins Application of +10V positive pulse to VDD Application of -10V negative pulse to VSS f=10kHz, Duty10%, Z=50Ω |
5 | All input and output pins. ±10V min. |
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