Supplementary data for the 1st Half FY March 2007 (April 1, 2006 – September 30, 2006) October 30, 2006 Corporate Communications Dept. 1H, FY March 2007 1 Cautionary Statements with Respect to Forward-Looking Statements This Thismaterial materialcontains containsforward-looking forward-lookingstatements, statements,including includingprojections, projections,plans, plans,policies, policies, management strategies, targets, schedules, understandings and evaluations, about management strategies, targets, schedules, understandings and evaluations, aboutTDK TDKand anditsits group groupcompanies companies(TDK (TDKGroup). Group). These Theseforward-looking forward-lookingstatements statementsare arebased basedon onthe thecurrent current forecasts, forecasts,estimates, estimates,assumptions, assumptions,plans, plans,beliefs beliefsand andevaluations evaluationsofofTDK TDKGroup Groupininlight lightofof information informationcurrently currentlyavailable availabletotoit,it,and andcontain containknown knownand andunknown unknownrisks, risks,uncertainties uncertaintiesand andother other factors. factors.TDK TDKGroup Grouptherefore thereforewishes wishestotocaution cautionreaders readersthat, that,being beingsubject subjecttotorisks, risks,uncertainties uncertainties and andother otherfactors, factors,TDK TDKGroup’s Group’sactual actualresults, results,performance, performance,achievements achievementsororfinancial financialposition position could couldbe bematerially materiallydifferent differentfrom fromany anyfuture futureresults, results,performance, performance,achievements achievementsororfinancial financial position positionexpressed expressedororimplied impliedby bythese theseforward-looking forward-lookingstatements, statements,and andTDK TDKGroup Groupundertakes undertakesno no obligation to publicly update or revise any forward-looking statements after the issue of this material obligation to publicly update or revise any forward-looking statements after the issue of this material except exceptas asprovided providedfor forininlaws lawsand andordinances. ordinances. The electronics markets in which TDK The electronics markets in which TDKGroup Groupoperates operatesare arehighly highlysusceptible susceptibletotorapid rapidchanges. changes. Risks, uncertainties and other factors that can have significant effects on TDK Group include, Risks, uncertainties and other factors that can have significant effects on TDK Group include,but but are arenot notlimited limitedto, to,shifts shiftsinintechnology, technology,fluctuations fluctuationsinindemand, demand,prices, prices,interest interestand andforeign foreignexchange exchange rates, rates,and andchanges changesinineconomic economicenvironments, environments,conditions conditionsofofcompetition, competition,laws lawsand andregulations. regulations. 1H, FY March 2007 2 Sales by major customer industry (Electronic materials and components segment) 1st Half, FY Mar. ‘07 Year on Year Sales Weight IT Home Electronics Plus 17% 68% High-Speed, Large Capacity Networks Plus 25% 9% Car Electronics Plus 9% 8% Others Plus 17% 15% Electronic materials and components (ex. Lambda Power) 1H, FY March 2007 3 Capital expenditures, Depreciation and amortization, Research and development October 30, 2006 Unit:Yen millions FY March 2006 [Results] FY March 2007 FY March 2007 Projections Jul. 27 '06 Projections Oct. 30 '06 Capital expenditures 73,911 70,000 70,000 Depreciation and amortization 58,540 62,000 62,000 Research and development 45,528 47,000 47,000 (Share of net sales) <Net sales> 5.7% 795,180 5.7% 820,000 1H, FY March 2007 5.7% 820,000 4 Consolidated results and projections Unit:Yen millions,% FY March 2006 [Results] (Yen mill.) (%) FY March 2007 October 30, 2006 FY March 2007 Projections Jul. 27 '06 Projections Oct. 30 '06 Y on Y growth (Yen mill.) (%) (Yen mill.) (%) (%) 795,180 100.0% 820,000 100.0% 820,000 100.0% 3.1% 687,750 86.5% 718,000 87.6% 718,000 87.6% 4.4% Electronic materials 180,766 22.7% 196,700 24.0% 195,000 23.8% 7.9% Electronic devices 154,680 19.5% 191,700 23.4% 190,000 23.2% 22.8% Recording devices 315,928 39.7% 289,000 35.2% 293,000 35.7% -7.3% 36,376 4.6% 40,600 5.0% 40,000 4.9% 10.0% 107,430 13.5% 102,000 12.4% 102,000 12.4% -5.1% Operating income 60,523 7.6% 82,000 10.0% 82,000 10.0% 35.5% Income before income taxes 66,103 8.3% 88,000 10.7% 88,000 10.7% 33.1% Net income 44,101 5.5% 61,000 7.4% 61,000 7.4% 38.3% Net sales Electronic materials and components Other electronic components Recording media Exchange rate (U.S.$=Yen) 113 111 1H, FY March 2007 113 An average exchange rate of Yen110=US$1 for the 2nd Half FY March 2007. 5 Sales (Yen million) Sales and Operating income ratio 250,000 15.0% 200,000 12.0% 150,000 9.0% 100,000 6.0% 50,000 3.0% 0 Sales Operating income ratio 2Q 3Q 4Q 1Q 2Q 3Q 4Q 1Q 2Q 0.0% 160,265 174,218 166,143 167,422 182,965 222,654 222,139 203,640 221,198 8.3% 9.9% FY Mar. 05 8.9% 7.7% 8.3% 9.6% FY Mar. 06 1H, FY March 2007 5.0% 8.8% 9.2% FY Mar. 07 6 Share of sales by products(2Q of FY Mar. 07) Other electronic components 7% Recording devices 36% Electronic materials 23% Sales and Operating income ratio of Electronic materials and components Electronic devices 23% Sales (Yen millions) Recording media 11% 250,000 15.0% 200,000 12.0% 150,000 9.0% 100,000 6.0% 50,000 3.0% 0 2Q 3Q 4Q 1Q 2Q 3Q 4Q 1Q 2Q 0.0% 131,282 143,746 140,382 143,328 157,392 192,091 194,939 180,131 196,576 Sales Operating income ratio 11.8% 13.6% 12.2% FY Mar. 05 1H, FY March 2007 10.7% 10.7% 11.6% FY Mar. 06 10.2% 10.9% 10.6% FY Mar. 07 7 Share of sales by products(2Q of FY Mar. 07) Other electronic components 7% Recording devices 36% Electronic materials 23% Electronic devices 23% Sales of Electronic materials 60,000 Sales (Yen millions) Recording media 11% 50,000 40,000 30,000 20,000 10,000 0 2Q 3Q 4Q 1Q 2Q 3Q 4Q 1Q 2Q Sales 46,273 43,002 40,762 41,047 45,042 47,613 47,064 47,666 51,047 FY Mar. 05 1H, FY March 2007 FY Mar. 06 FY Mar. 07 8 Share of sales by products(2Q of FY Mar. 07) Other electronic components 7% Recording devices 36% Electronic materials 23% Electronic devices 23% Sales of Electronic devices 60,000 Sales (Yen millions) Recording media 11% 50,000 40,000 30,000 20,000 10,000 0 2Q 3Q 4Q 1Q 2Q 3Q 4Q 1Q 2Q Sales 29,263 30,571 28,305 28,687 32,265 46,979 46,749 46,351 50,231 FY Mar. 05 1H, FY March 2007 FY Mar. 06 FY Mar. 07 9 Share of sales by products(2Q of FY Mar. 07) Other electronic components 7% Recording devices 36% Electronic materials 23% Electronic devices 23% Sales of Recording devices 100,000 Sales (Yen millions) Recording media 11% 80,000 60,000 40,000 20,000 0 2Q 3Q 4Q 1Q 2Q 3Q 4Q 1Q 2Q Sales 51,170 65,351 65,894 68,464 71,824 85,736 89,904 73,788 80,267 FY Mar. 05 1H, FY March 2007 FY Mar. 06 FY Mar. 07 10 Share of sales by products(2Q of FY Mar. 07) Other electronic components 7% Recording devices 36% Electronic materials 23% Electronic devices 23% Sales of Other electronic components 20,000 Sales (Yen millions) Recording media 11% 10,000 0 2Q Sales 4,576 3Q 4Q 4,822 5,421 1Q 5,130 FY Mar. 05 1H, FY March 2007 2Q 3Q 4Q 1Q 2Q 8,261 11,763 11,222 12,326 15,031 FY Mar. 06 FY Mar. 07 11 Share of sales by products(2Q of FY Mar. 07) Other electronic components 7% Recording devices 36% Electronic materials 23% Sales and Operating income ratio of Recording media 40,000 0.0% 30,000 -10.0% 20,000 -20.0% 10,000 -30.0% Electronic devices 23% Sales (Yen millions) Recording media 11% 0 2Q 3Q 4Q 1Q 2Q 3Q 4Q 1Q 2Q Sales 28,983 30,472 25,761 24,094 25,573 30,563 27,200 23,509 24,622 Operating income ratio -7.3% -7.6% -9.1% -10.4% -6.7% -3.0% -31.9% -7.0% -2.7% FY Mar. 05 1H, FY March 2007 FY Mar. 06 -40.0% FY Mar. 07 12