Supplementary Data 1 Cautionary Statements with Respect to Forward-Looking Statements This material contains forward-looking statements, including projections, plans, policies, management strategies, targets, schedules, understandings and evaluations, about TDK or its group companies (TDK Group). These forward-looking statements are based on the current forecasts, estimates, assumptions, plans, beliefs and evaluations of TDK Group in light of information currently available to it, and contain known and unknown risks, uncertainties and other factors. TDK Group therefore wishes to caution readers that, being subject to risks, uncertainties and other factors, TDK Group’s actual results, performance, achievements or financial position could be materially different from any future results, performance, achievements or financial position expressed or implied by these forward-looking statements, and TDK Group undertakes no obligation to publicly update or revise any forward-looking statements after the issue of this material except as provided for in laws and ordinances. The electronics markets in which TDK Group operates are highly susceptible to rapid changes. Risks, uncertainties and other factors that can have significant effects on TDK Group include, but are not limited to, shifts in technology, fluctuations in demand, prices, interest and foreign exchange rates, and changes in economic environments, conditions of competition, laws and regulations. 2 Expenses / Foreign exchange sensitivity (JPY billion） FY2010 Full Year Results FY2011 Full Year Results Change Yen billion % Capital expenditures 64.4 78.6 14.2 22.0 Depreciation and amortization 83.8 77.6 -6.2 -7.4 Research and development 53.9 53.0 -0.9 -1.7 US$ Ex-rate EURO Sensitivit by 1Yen appreciation 92.89 131.18 85.73 113.12 Appreciation by 7.7% Appreciation by 13.8% US$/Yen :Net Sales about 5.5 billion yen, Operating Income about 2.0 billion yen EURO/Yen :Net Sales about 1.5 billion yen, Operating Income less than 100 million yen 3 Business overview in Passive components（3Q vs 4Q) Sector Net sales in 3Q Net sales in 4Q Change % Capacitors 35.2 billion yen 34.5 billion yen -2.0% Inductive devices 33.9 billion yen 35.0 billion yen +3.2% Other 39.3 billion yen 38.6 billion yen -1.8% Sales status Ceramic capacitors Slightly increased sales for automobiles Decreased sales for PCs, AV equipment and communication device Aluminum & Film capacitors Steady sales for industrial equipment applications and renewable energy equipment Lower sales for AV equipment and PCs Increased sales of noise filters for automobiles, industrial and renewable energy equipment Slightly increased sales for automobiles, smart phones and tablet devices High-frequency components Lower sales of high-frequency components for mobile devices Piezoelectric materials products, circuit protection components Higher sales for automobiles 4 Quarterly Results (4Q vs. 4Q) (3Q vs. 4Q) JPY billion 4Q of FY 2010 Jan 1- Mar 31, 2010 （Ａ） 3Q of FY 2011 Oct 1- Dec 31, 2010 （B） 4Q of FY 2011 Jan 1- Mar 31, 2011 （C） YoY Change （Ｃ）－（Ａ） Yen billion QoQ Change （Ｃ）－（Ｂ） % JPY billion % 211.3 219.9 213.6 2.3 1.1 -6.3 -2.9 Passive Components 96.5 108.4 108.1 11.6 12.0 -0.3 -0.3 Magnetic Application Products 98.6 90.8 85.2 -13.4 -13.6 -5.6 -6.2 Other 16.3 20.7 20.3 4.0 24.5 -0.4 -1.9 8.3 17.2 9.4 1.1 13.3 -7.8 -45.3 Passive Components -1.5 6.3 5.0 6.5 - -1.3 -20.6 Magnetic Application Products 15.0 11.5 6.8 -8.2 -54.7 -4.7 -40.9 Other 2.1 2.0 0.8 -1.3 -61.9 -1.2 -60.0 Corporate and eliminations -7.3 -2.5 -3.2 4.1 - -0.7 - Operating Income Margin 3.9% 7.8% 4.4% +0.5pt - -3.4pt - 11.1 16.6 8.9 -2.2 -19.8 -7.7 -46.4 3.6 12.6 6.6 3.0 83.3 -6.0 -47.6 Net Sales Breakdown Operating Income Breakdown Income Before Income Taxes Net Income Ex-rate US$ Yen 90.69 Yen 82.65 Yen 82.31 EURO Yen 125.49 Yen 112.20 Yen 112.66 5 Quarterly Sales and Operating Income by Segment （JPY billion） Net Sales １Q 181.5 FY March 2010 ２Q ３Q ４Q 204.3 211.7 211.3 Total 808.8 １Q 221.9 FY March 2011 ２Q ３Q ４Q 220.3 219.9 213.6 Total 875.7 Breakdown Breakdown Passive Components Magnetic Applications Others 80.2 86.9 14.4 93.8 96.3 14.3 94.3 102.0 15.4 96.5 98.6 16.3 364.8 383.7 60.3 105.1 100.3 16.6 109.5 92.2 18.6 108.4 90.8 20.7 108.1 85.2 20.3 431.1 368.5 76.1 Operating Income -3.6 9.0 12.1 8.3 25.8 20.2 17.0 17.2 9.4 63.8 Passive Components Magnetic Applications Others Sub-total -9.2 5.9 0.8 -2.4 -1.2 97.36 132.66 0.2 11.3 1.2 12.7 -3.7 93.73 133.75 0.3 14.6 1.1 15.9 -3.8 89.73 132.66 -1.5 15.0 2.1 15.6 -7.3 90.69 125.49 -10.3 46.7 5.2 41.6 -15.9 92.89 131.18 6.2 16.1 1.1 23.3 -3.1 92.01 117.03 7.3 12.5 1.7 21.5 -4.5 85.88 110.67 6.3 11.5 2.0 19.7 -2.5 82.65 112.20 5.0 6.8 0.8 12.6 -3.2 82.31 112.66 24.7 46.9 5.5 77.1 -13.3 85.73 113.12 Corporate and Eliminations Ex-rate ￥/USD ￥/EURO JPY billion 250.0 200.0 14.3 15.4 16.3 14.4 150.0 16.6 18.6 20.7 20.3 100.3 92.2 90.8 85.2 96.3 102.0 98.6 80.2 93.8 94.3 96.5 105.1 109.5 108.4 108.1 １Q ２Q ３Q ４Q １Q ２Q ３Q ４Q 86.9 100.0 50.0 Others Magnetic Applications Products Passive Components 0.0 6 Quarterly Sales by Segment （JPY billion） １Q FY March 2010 ２Q ３Q ４Q Total １Q FY March 2011 ２Q ３Q ４Q Total Breakdown Net Sales 181.5 204.3 211.7 211.3 808.8 221.9 220.3 219.9 213.6 875.7 Passive Components 80.2 93.8 94.3 96.5 364.8 105.1 109.5 108.4 108.1 431.1 Capacitors 28.8 33.6 34.6 36.1 133.1 38 37.7 35.2 34.5 145.4 Inductive Devices 24.8 28.9 28.9 29.3 112.0 32.5 34.3 33.9 35.0 135.8 Other Passive Components 26.7 31.3 30.7 31.1 119.7 34.6 37.5 39.3 38.6 150.0 86.9 96.3 102 98.6 383.7 100.3 92.2 90.8 85.2 368.5 Recording Devices 62.9 71 73.8 72.3 280.0 71.7 65.3 63 57.5 257.5 Other Magnetic Applications Products 24.1 25.2 28.2 26.3 103.7 28.6 26.9 27.7 27.7 111.0 14.4 14.3 15.4 16.3 60.3 16.6 18.6 20.7 20.3 76.1 97.36 93.73 89.73 90.69 92.89 92.01 85.88 82.65 82.31 85.73 132.66 133.75 132.66 125.49 131.18 117.03 110.67 112.20 112.66 113.12 16.6 18.6 20.7 28.6 26.9 20.3 27.7 27.7 71.7 65.3 63.0 57.5 Magnetic Applications Products Breakdow Other Sales Ex-rate ￥/USD ￥/EURO JPY billion 250 14.3 25.2 15.4 16.3 28.2 26.3 71.0 73.8 72.3 31.3 30.7 31.1 34.6 37.5 39.3 38.6 24.8 28.9 28.9 29.3 32.5 34.3 33.9 35.0 28.8 33.6 34.6 36.1 38 37.7 35.2 34.5 １Q ２Q ３Q ４Q １Q ２Q ３Q ４Q 200 150 100 14.4 24.1 62.9 26.7 50 0 Others Other Magnetic Application Products Recording Devices Oher Passive Components Inductive Devices Capacitors 7 8 9