AEC-Q100标准解读之HTOL及ELFR

发布时间:2022-07-28 09:16:27
AEC-Q100标准解读之JEDEC JESD22-A108 High Temperature Operating Life(HTOL),AEC Q100-008 Early Life Failure Rate(ELFR)
High Temperature Operating Life(HTOL)
参考标准:JEDEC JESD22-A108; 
目的:评估器件在超热和超电压情况下一段时间的耐久力;
失效机制:电子迁移,氧化层破裂,相互扩散,不稳定性,离子玷污等;
试验通过判断依据:芯片试验完成后FT常、高、低温测试pass;
试验条件:
For devices containing NVM, endurance preconditioning must be performed before HTOL per Q100-005.
Grade 0: +150oC Ta for 1000 hours. 
Grade 1: +125oC Ta for 1000 hours. 
Grade 2: +105oC Ta for 1000 hours.
Grade 3: +85oC Ta for 1000 hours.
Vcc (max) at which dc and ac parametrics are guaranteed. Thermal shut-down shall not occur during this test. 
TEST before and after HTOL at room, cold and hot temperature (in that order).
需求确认:需客户提供客户提供HTOL参考原理图或者设计需求、芯片POD、具体试验条件、试验样品数量、硬件需求数量、 HTOL条件下单颗芯片预计功耗等。

Early Life Failure Rate(ELFR)
参考标准: AEC Q100-008;
目的:评估工艺的稳定性,加速缺陷失效率,去除由于天生原因失效的产品;
失效机制:材料或工艺的缺陷,包括诸如氧化层缺陷,金属刻镀,离子玷污等由于生产造成的失效;
试验通过判断依据:芯片试验完成后FT常、高温测试pass;
试验条件:
Grade 0: 48 hours at 150oC or 24 hours at 175oC 
Grade 1: 48 hours at 125oC or 24 hours at 150oC 
Grade 2: 48 hours at 105oC or 24 hours at 125oC 
Grade 3: 48 hours at 85oC or 24 hours at 105oC 
TEST before and after ELFR at room and hot temperature.
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