december 2009 doc id 9346 rev 3 1/7 7 STTH310 high voltage ultrafast rectifier features low forward voltage drop high reliability high surge current capability soft switching for reduced emi disturbances planar technology description the STTH310, which uses st ultrafast high voltage planar technology, is specially suited for free-wheeling, clamping, snubbering, demagnetization in power supplies and other power switching applications. table 1. device summary i f(av) 3 a v rrm 1000 v t j 175 c v f (max) 1.42 v t rr (max) 75 ns smc STTH310s do-201ad c2 STTH310 do-201ad STTH310 www.st.com
characteristics STTH310 2/7 doc id 9346 rev 3 1 characteristics to evaluate the conduction losses use the following equation: p = 1.20 x i f(av) + 0.075 i f 2 (rms) table 2. absolute ratings (limiting values) symbol parameter value unit v rrm repetitive peak reverse voltage 1000 v i f(av) average forward current, = 0.5 t l = 75 c, = 0.5 do-201ad 3 a t l = 75 c, = 0.5 smc 3 i fsm forward surge current t p = 8.3 ms sinusoidal do-201ad 55 a smc 45 t stg storage temperature range - 50 to + 175 c t j maximum operating junction temperature + 175 c table 3. thermal parameters symbol parameter value unit r th(j-l) junction to lead l = 10 mm do-201ad 20 c/w smc 20 r th(j-a) junction to ambient l = 10 mm do-201ad 75 table 4. static electrical characteristics symbol parameter test conditions min. typ. max. unit i r reverse leakage current t j = 25 c v r = v rrm --10 a t j = 125 c - - 50 v f forward voltage drop t j = 25 c i f = 3 a --1.7 v t j = 150 c - 0.98 1.42 table 5. dynamic electrical characteristics symbol parameter test conditions min. typ. max. unit t rr reverse recovery time i f = 0.5 a, i rr = 0.25 a i r = 1 a, t j = 25 c - - 75 ns t fr forward recovery time i f = 3 a, di f /dt = 50 a/s v fr = 1.1 x v fmax , t j = 25 c --300ns v fp forward recovery voltage - - 12 v
STTH310 characteristics doc id 9346 rev 3 3/7 figure 5. thermal resistance junction to ambient versus copper surface under each lead figure 1. conduction losses versus average current figure 2. forward voltage drop versus forward current p(w) 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 i (a) f(av) t =tp/t tp = 1 = 0.05 = 0.5 = 0.2 = 0.1 i (a) fm 0.1 1.0 10.0 100.0 0.0 0.5 1.0 1.5 2.0 2.5 t =25c (maximum values) j v (v) fm t =150c (maximum values) j t =150c (typical values) j figure 3. relative variation of thermal impedance junction ambient versus pulse duration (do-201ad) figure 4. relative variation of thermal impedance junction ambient versus pulse duration (smc) z/r th(j-c) th(j-c) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.e-01 1.e+00 1.e+01 1.e+02 1.e+03 = 0.5 = 0.2 = 0.1 single pulse t =tp/t tp t (s) p epoxy printed circuit board, fr4, l = 10 mm leads z/r th(j-c) th(j-c) 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 1.e-01 1.e+00 1.e+01 1.e+02 1.e+03 t =tp/t tp t (s) p = 0.5 = 0.2 = 0.1 single pulse epoxy printed circuit board, fr4, s = 1cm 2 r (c/w) th(j-a) 0 10 20 30 40 50 60 70 80 90 100 110 012345 smb do-201ad l =10mm leads s(cm2) epoxy printed circuit board, fr4, copper thickness = 35 m
package information STTH310 4/7 doc id 9346 rev 3 2 package information epoxy meets ul94, v0 band indicates cathode cooling method: by conduction (c) in order to meet environmental requirements, st offers these devices in different grades of ecopack ? packages, depending on their level of environmental compliance. ecopack ? specifications, grade definitions and product status are available at: www.st.com . ecopack ? is an st trademark. figure 6. footprint, dimensions in mm (inches) table 6. smc dimensions ref. dimensions millimeters inches min. max. min. max. a1 1.90 2.45 0.075 0.096 a2 0.05 0.20 0.002 0.008 b (1) 1. dimensions b and c apply to plated leads 2.90 3.20 0.114 0.126 c (1) 0.15 0.40 0.006 0.016 d 5.55 6.25 0.218 0.246 e 7.75 8.15 0.305 0.321 e1 6.60 7.15 0.260 0.281 e2 4.40 4.70 0.173 0.185 l 0.75 1.50 0.030 0.059 e c l e2 e1 d a1 a2 b 8.19 1.54 5.11 1.54 (0.061) (0.201) (0.322) (0.124) (0.061) 3.14
STTH310 package information doc id 9346 rev 3 5/7 table 7. do-201ad dimensions ref. dimensions millimeters inches min. max. min. max. a - 9.50 - 0.374 b 25.40 - 1.000 - c - 5.30 - 0.209 d - 1.30 - 0.051 e - 1.25 - 0.049 notes 1 - the lead diameter ? d is not controlled over zone e 2 - the minimum length which must stay straight between the right angles after bending is 0.59"(15mm) table 8. do-201ad c2 dimensions ref. dimensions millimeters inches min. typ. max. min. typ. max. a - - 9.5 - - 0.374 b 13.75 - 17.75 0.541 - 0.699 c - - 5.3 - - 0.208 d - - 1.3 - - 0.051 e 3.1 3.6 4.1 0.122 0.142 0.161 f 2.4 3.15 3.9 0.094 0.124 0.153 g - 1.6 - - 0.063 - h 14.9 - 15.6 0.587 - 0.614 i 0.5 0.6 0.8 0.019 0.024 0.031 j - 18.78 - - 0.739 - k 3.8 - 4.8 0.150 - 0.189 note the difference between e dimensions on both sides of resinous body (which express the bending centering) must not be larger than 0.7 millimeter. ?c ?d a ee note 2 note 1 note 1 bb j a i d 55.9 50.8 h g = d + 0.2 to 0.4 mm e r0.5 r0.5 b min max k f (g = hole in the pcb) 10 max c
ordering information STTH310 6/7 doc id 9346 rev 3 3 ordering information 4 revision history table 9. ordering information order code marking package weight base qty delivery mode STTH310s s10 smc 0.245 g 2500 tape and reel STTH310 STTH310 do-201ad 1.16 g 600 ammopack STTH310rl STTH310 do-201ad 1.16 g 1900 tape and reel STTH310-c2 stth 310 do-201ad c2 1.12 g 500 box table 10. document revision history date revision changes jan-2003 1 first release. 03-apr-2007 2 do-201ad c2 package added. smc package information updated. 07-dec-09 3 updated ta b l e 6 package dimensions.
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