?00 9 fairchild semiconductor corporation 1 rurd4120s 9a_f085 rev. a rurd4120s 9a_f085 4a, 1200v ultrafast diodes the rurd4120 s 9a_f085 are ultrafast diodes with soft recovery characteristics (t rr < 70ns). they have low forward voltage drop and are silicon nitride passivated ion-implanted epitaxial planar construction. these devices are intended for use as freewheeling/ clamping diodes and recti?rs in a variety of switching power supplies and other power switching applications. their low stored charge and ultrafast soft recovery minimize ringing and electrical noise in many power switching circuits reducing power loss in the switching transistors. formerly developmental type ta49036. symbol features ultrafast with soft recovery . . . . . . . . . . . . . . . . . . . <70ns operating temperature . . . . . . . . . . . . . . . . . . . . . . 175 o c reverse voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1200v avalanche energy rated planar construction applications switching power supplies power switching circuits general purpose packaging jedec style to-252 ordering information part number package brand rurd4120s 9a_f085 9a_f085 to -252 ur4120 k a anode cathode cathode (flange) absolute maximum ratings t c = 25 o c, unless otherwise speci?d RURD4120S9A_f085 units peak repetitive reverse voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v rrm 1200 v working peak reverse voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v rwm 1200 v dc blocking voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v r 1200 v average recti?d forward current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .i f(av) (t c = 152 o c) 4a repetitive peak surge current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . i frm (square wave, 20khz) 8a nonrepetitive peak surge current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . i fsm (halfwave, 1 phase, 60hz) 40 a maximum power dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . p d 50 w avalanche energy (see figures 10 and 11). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . e avl 10 mj operating and storage temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . t stg , t j -65 to 175 o c data sheet march 200 9 qualified to ace q101 rohs compliant
?009 fairchild semiconductor corporation 2 RURD4120S9A_f085 rev. a electrical speci?ations t c = 25 o c, unless otherwise speci?d symbol test condition min typ max units v f i f = 4a - - 2.1 v i f = 4a, t c = 150 o c - - 1.9 v i r v r = 1200v - - 100 a v r = 1200v, t c = 150 o c - - 500 a t rr i f = 1a, di f /dt = 200a/ s--70ns i f = 4a, di f /dt = 200a/ s--90ns t a i f = 4a, di f /dt = 200a/ s - 40 - ns t b i f = 4a, di f /dt = 200a/ s - 28 - ns q rr i f = 4a, di f /dt = 200a/ s - 335 - nc c j v r = 10v, i f = 0a - 15 - pf r jc --3 o c/w definitions v f = instantaneous forward voltage (pw = 300 s, d = 2%). i r = instantaneous reverse current. t rr = reverse recovery time (see figure 9), summation of t a + t b . t a = time to reach peak reverse current (see figure 9). t b = time from peak i rm to projected zero crossing of i rm based on a straight line from peak i rm through 25% of i rm (see figure 9). q rr = reverse recovery time. c j = junction capacitance. r jc = thermal resistance junction to case. pw = pulse width. d = duty cycle. typical performance curves figure 1. forward current vs forward voltage figure 2. reverse current vs reverse voltage v f , forward voltage (v) i f , forward current (a) 1 20 0.5 10 0 0.5 1 1.5 2 2.5 3 25 o c 175 o c 100 o c v r , reverse voltage (v) 0 400 800 1200 600 1000 100 0.01 0.1 1 10 i r , reverse current ( a) 200 0.001 25 o c 100 o c 175 o c RURD4120S9A_f085
?009 fairchild semiconductor corporation 3 RURD4120S9A_f085 rev. a figure 3. t rr , t a and t b curves vs forward current figure 4. t rr , t a and t b curves vs forward current figure 5. t rr , t a and t b curves vs forward current figure 6. current derating curve figure 7. junction capacitance vs reverse voltage typical performance curves (continued) i f , forward current (a) 0.5 0 45 30 15 75 4 1 t rr 60 t, recovery times (ns) t b t a t c = 25 o c, di f /dt = 200a/ s 0.5 0 60 100 4 1 t, recovery times (ns) i f , forward current (a) t b 80 20 t rr t a 40 t c = 100 o c, di f /dt = 200a/ s 0.5 0 25 125 4 1 t rr t b 100 t a t, recovery times (ns) i f , forward current (a) 50 75 t c = 175 o c, di f /dt = 200a/ s 5 1 0 125 135 155 175 165 2 3 4 t c , case temperature ( o c) i f(av) , average forward current (a) 145 dc sq. wave v r , reverse voltage (v) 30 15 0 0 50 100 150 200 75 c j , junction capacitance (pf) 60 45 RURD4120S9A_f085
?009 fairchild semiconductor corporation 4 RURD4120S9A_f085 rev. a test circuits and waveforms figure 8. t rr test circuit figure 9. t rr waveforms and definitions figure 10. avalanche energy test circuit figure 11. avalanche current and voltage waveforms r g l v dd igbt current sense dut v ge t 1 t 2 v ge amplitude and t 1 and t 2 control i f r g control di f /dt + - dt di f i f t rr t a t b 0 i rm 0.25 i rm dut current sense + lr v dd r < 0.1 ? e avl = 1/2li 2 [v r(avl) /(v r(avl) - v dd )] q 1 = igbt (bv ces > dut v r(avl) ) - v dd q 1 i = 1a l = 20mh iv t 0 t 1 t 2 i l v avl t i l rurd4120s 9a_f085 i l rurd4120s 9a_f085 i l rurd4120s 9a_f085 i l rurd4120s 9a_f085
rev. i39 trademarks the following includes registered and unregistered trademarks and service marks, owned by fairchild semiconductor and/or its gl obal subsidiaries, and is not intended to be an exhaustive list of all such trademarks. * trademarks of system general corporation, used under license by fairchild semiconductor. disclaimer fairchild semiconductor reserves the right to make changes with out further notice to any products herein to improve reliability, function, or design. fairchild does not assume an y liability arising out of the application or use of any product or circuit described herein; neither does it convey an y license under its patent rights, nor the rights of others. these specifications do not expand the terms of fairchild?s worldwide terms and conditions, specifically the warranty therein, which covers these products. life support policy fairchild?s products are not authorized for use as critical components in life support devices or systems without the express written approval of fairchild semiconductor corporation. as used herein: 1. life support devices or systems ar e devices or systems which, (a) are intended for surgical implant into the body or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury of the user. 2. a critical component in any component of a life support, device, or system whose failure to perform can be reasonably expected to cause the failure of the life su pport device or system, or to affect its safety or effectiveness. product status definitions definition of terms build it now? coreplus? corepower? crossvolt ? ctl? current transfer logic? ecospark ? efficentmax? ezswitch? * ? fairchild ? fairchild semiconductor ? fact quiet series? fact ? fast ? fastvcore? flashwriter ? * fps? f-pfs? frfet ? global power resource sm green fps? green fps? e-series? gto? intellimax? isoplanar? megabuck? microcoupler? microfet? micropak? millerdrive? motionmax? motion-spm? optologic ? optoplanar ? ? pdp spm? power-spm? powertrench ? powerxs? programmable active droop? qfet ? qs? quiet series? rapidconfigure? ? saving our world, 1mw /w /kw at a time? smartmax? smart start? spm ? stealth? superfet? supersot?-3 supersot?-6 supersot?-8 supremos? syncfet? ? the power franchise ? tinyboost? tinybuck? tinylogic ? tinyopto? tinypower? tinypwm? tinywire? trifault detect? truecurrent?* serdes? uhc ? ultra frfet? unifet? vcx? visualmax? xs? tm ? tm tm datasheet identification product status definition advance information formative / in design datasheet contains the design specificati ons for product development. specifications may change in any manner without notice. preliminary first production datasheet contains preliminary data; supplementary data will be published at a later date. fairchild semiconductor reserves the ri ght to make changes at any time without notice to improve design. no identification needed full production datasheet contains final specifications. fair child semiconductor reserves the right to make changes at any time withou t notice to improve the design. obsolete not in production datasheet contains specifications on a product that is discontinued by fairchild semiconductor. the datasheet is for reference information only. anti-counterfeiting policy fairchild semiconductor corporation?s anti-counterfeiting policy . fairchild?s anti-counterfeiting policy is also stated on our external website, www.fairchildsemi.com, under sales support . counterfeiting of semiconductor parts is a growing problem in t he industry. all manufactures of semiconductor products are expe riencing counterfeiting of their parts. customers who inadvertently purchase counterfeit parts exper ience many problems such as loss of brand reputation, substa ndard performance, failed application, and increased cost of production and manufacturing delays. fairchild is taking strong measures to protect ourselve s and our customers from the proliferation of counterfeit parts. fairchild strongly encourages customers to purchase fairchild parts either directly from fa irchild or from authorized fairchild distributors who are listed by country on our web page cited above. products customers buy either from fairchild directly or fr om authorized fairchild distributors are genuine parts, have full traceability, meet fa irchild?s quality standards for handing and storage and provide access to fairchild?s full range of up-to-date technical and product information. fairchild and our authorized distributors will stand behind all warranties and wi ll appropriately address and warranty issues that may arise. fairchild will not provide any warranty coverage or other assistance for parts bought from unau thorized sources. fairchild is committed to combat this global problem and encourage our customers to do their part in stopping this practice by buying direct or from authorized distributors. ?009 fairchild semiconductor corporation 1 RURD4120S9A_f085 rev. b ?009 fairchild semiconductor corporation 1 RURD4120S9A_f085 rev. b ?009 fairchild semiconductor corporation 1 RURD4120S9A_f085 rev. b ?009 fairchild semiconductor corporation 1 RURD4120S9A_f085 rev. b ?009 fairchild semiconductor corporation 1 RURD4120S9A_f085 rev. b ?009 fairchild semiconductor corporation 1 RURD4120S9A_f085 rev. b ?009 fairchild semiconductor corporation 1 RURD4120S9A_f085 rev. b ?009 fairchild semiconductor corporation 1 RURD4120S9A_f085 rev. b ?009 fairchild semiconductor corporation 5 RURD4120S9A_f085 rev. a RURD4120S9A_f085
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