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Exhibit 12.1

ALPHA AND OMEGA SEMICONDUCTOR LIMITED
COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES        
(Amount in thousands of dollars)
 
 
 
Year Ended June 30,
 
 
 
2016
 
2015
 
2014
 
2013
 
2012
Fixed charges:
 
 
 
 
 
 
 
 
 
 
Interest expense
 
$
0

 
$
109

 
$
225

 
$
279

 
$
324

Interest expenses related to finance lease
 
23

 
72

 
41

 
77

 
18

Total fixed charges
 
$
23

 
$
181

 
$
266

 
$
356

 
$
342

 
 
 
 
 
 
 
 
 
 
 
 
Earnings available for fixed charges:
 
 
 
 
 
 
 
 
 
 
(Income) loss before taxes
 
$
(989
)
 
$
3,867

 
$
335

 
$
1,574

 
(16,498
)
Less: Fixed charges
 
23

 
181

 
266

 
356

 
342

Less: net loss - noncontrolling interest
 
104

 
—

 
—

 
—

 
—

Total Earnings available for fixed charges
 
$
(1,116
)
 
$
3,686

 
$
69

 
$
1,218

 
(16,840
)
 
 
 
 
 
 
 
 
 
 
 
 
Ratio of earnings to fixed charges
 
(48.52)

 
20.36

 
0.26

 
3.42

 
(49.24)

 
 
 
 
 
(A)
 
(B)
 
( C)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
(A)
Due to the Company's loss in 2015, the ratio coverage was less than 1:1. The Company must generate additional earnings of $3,867 to achieve a coverage ratio of 1:1.
(B)
Due to the Company's loss in 2014, the ratio coverage was less than 1:1. The Company must generate additional earnings of $335 to achieve a coverage ratio of 1:1.
(C)
Due to the Company's loss in 2013, the ratio coverage was less than 1:1. The Company must generate additional earnings of $1,574 to achieve a coverage ratio of 1:1.