SP6121CN-L Datasheet, PDF (42/42 Pages) Sipex Corporation – Low Voltage, Synchronous Step Down PWM Controller

Based on the above criteria SP6128A product FIT rates for 25°, 55°, and 70°C of
operation at 60% and 90% confidence levels have been calculated and listed below.
FIT Failure Rates: SP6128A BC1 Silan Process
Confidence Level
+25°C
60%
2.4
90%
6.3
1 FIT = 1 Failure per Billion Device-Hours
+55°C
35.3
90.6
+70°C
113.2
290.3
MTBF Calculation: SP6128A BC1 Silan Process
Confidence Level
60%
90%
+25°C
4.09E+08
1.60E+08
+55°C
2.83E+07
1.10E+07
+70°C
8.83E+06
3.44E+06
ESD Testing
Human Body Model ESD – 77 units were subjected to Human Body Model ESD testing
at +/- 2KV. All units passed.
Latch-up Testing
JED-STD Latch-up Testing 85C - 77 units from the qualification lot were subjected to
JED-STD Latch-up testing at 85C. All units passed at +/-200mA.
Additional Reliability Tests
77 of the units were placed on -65C/+150C Temperature Cycle testing, 77 of the units were placed
on Highly-Accelerated Temp. and Humidity Stress testing (130C, 85% RH), 200 of the units were placed
on ELFR testing and 77 on -65C/+150C Thermal Shock testing. All units passed testing as summarized in
the following table.
Test
TEMP. Cycles
HAST Unbiased
ELFR
Thermal Shock
Condition
-65C/+150C
130C/85%RH
125C
-65C/+150C
Time
1000 Cycles
96hrs
Sample Size
# of
rejects
77
0
77
0
48hrs
200
0
500 Cycles
77
0
SP6128A Reliability Report
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