1/4 STBR406/408 august 2001 - ed: 4c 50-60hz rectification bridge ? single-phase 4a bridge for 50 & 60hz rectification in switch mode power supplies. application: home appliances, automation, telecommunications, pc, servers. description n dielectric strength of 2000v n high surge overload rating n high surge current capability n ul94v0 n planar technology features and benefits i f(av) 4a v rrm 600 v / 800 v v f (max) 1.05 v major product characteristics gbu STBR406/408 - + ~ ~ symbol parameter STBR406 stbr408 unit v rrm repetitive peak reverse voltage 600 800 v v rms rms voltage 420 560 v v dc dc blocking voltage 600 800 v i f(av) average forward current t c = 90c 4a i fsm non repetitive surge peak forward current tp = 8.3 ms single sine wave (jedec method) 120 a i 2 t rating for fusing (tp < 8.3ms) 60 a 2 s tj maximum operating junction temperature 150 c t stg storage temperature range -50to150 c absolute ratings (limiting values) ~~ + -
STBR406/408 2/4 symbol parameter min. typ. max. unit r th(j-c) junction to case 7.6 8.4 c/w r th(j-a) junction to ambient 35 c/w thermal parameters symbol parameter test conditions min. typ. max. unit v f forward voltage drop i f =4a 1.05 v i r reverse leakage current per leg v r =v rrm tj = 25c 5 m a tj =125c 50 m a c junction capacitance per leg (note 1) 40 pf note 1 : measured at 1mhz and applied reverse voltage of 4v. electrical characteristics 0 1 2 3 4 5 6 7 8 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 if(av)(a) ip / if(av)=20 ip / if(av)=10 ip / if(av)=5 (capacitive load) ip / if(av)=p (resistive load) pf(av)(w) fig. 1: average power dissipation of bridge versus average output current. 0 1 2 3 4 5 0 25 50 75 100 125 150 tamb(c) rth(j-a)=rth(j-c) rth(j-a)=15c/w rth(j-a)=35c/w if(av)(a) fig. 2: average output current versus ambient temperature (resistive load or inductive load) 0.1 1.0 10.0 100.0 1.e-02 1.e-01 1.e+00 1.e+01 1.e+02 1.e+03 tp(s) free air zth(j-a)(c/w) fig. 3: variation of thermal impedance junction to ambient versus pulse duration (printed circuit board epoxy fr4). 0.1 1.0 10.0 100.0 1000.0 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 vfm(v) tj=25c tj=125c ifm(a) fig. 4: forward voltage drop versus forward current (typical values, per leg).
STBR406/408 3/4 1.e-05 1.e-04 1.e-03 1.e-02 1.e-01 1.e+00 1.e+01 0 100 200 300 400 500 600 700 800 vr(v) tj=150c tj=125c tj=75c tj=25c ir(a) fig. 5: reverse leakage current versus reverse voltage applied (typical values, per leg). 1.e-05 1.e-04 1.e-03 1.e-02 1.e-01 1.e+00 1.e+01 0 25 50 75 100 125 150 tj(c) vr=800v ir(a) fig. 6: reverse leakage current versus junction temperature (typical values). 1 10 100 1 10 100 1000 vr(v) f=1mhz vosc=30mv rms tj=25c c(pf) fig. 7: junction capacitance versus reverse voltage applied (typical values). 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1 10 100 dif/dt(a/s) if=4a vr=400v tj=125c if dif/dt s=[dif/dt]/[dir/dt] t s(softness factor) fig. 8: softness factor versus dif/dt (typical values). 0 20 40 60 80 100 120 1 10 100 1000 number of cycles non repetitive tj initial=150c repetitive tj initial=50c tp=10ms ifsm(a) fig. 9: surge peak forward current versus number of cycles (per leg).
STBR406/408 4/4 information furnished is believed to be accurate and reliable. however, stmicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. no license is granted by implication or otherwise under any patent or patent rights of stmicroelectronics. specifications mentioned in this publication are subject to change without notice. this publication supersedes and replaces all information previously supplied. stmicroelectronics products are not authorized for use as critical components in life support devices or systems without express written ap- proval of stmicroelectronics. the st logo is a registered trademark of stmicroelectronics ? 2001 stmicroelectronics - printed in italy - all rights reserved. stmicroelectronics group of companies australia - brazil - china - finland - france - germany - hong kong - india - italy - japan - malaysia malta - morocco - singapore - spain - sweden - switzerland - united kingdom - u.s.a. http://www.st.com package mechanical data gbu b d i h g ? p f c e a j -~ ~+ nn n k q m o o o l o front side ref. dimensions millimeters inches min. max. min. max. a 21.8 22.3 0.86 0.88 b 18.3 18.8 0.72 0.74 c 3.2 typ. 45 0.125 typ. 45 d 17.5 18 0.69 0.71 e 7.4 7.9 0.29 0.31 f 1.65 2.16 0.065 0.085 g 2.25 2.75 0.089 0.108 h 1.95 2.35 0.077 0.093 i 1.02 1.27 0.04 0.05 j 3.5 4.1 0.14 0.16 k 3.3 3.56 0.13 0.14 l 0.76 1 0.03 0.04 m 0.46 0.56 0.018 0.022 n 4.83 5.33 0.19 0.21 o 7 typ. 7 typ. p 1.9 typ. 0.075 typ. q 7 typ. 7 typ. ordering type marking package weight base qty delivery mode STBR406 STBR406 gbu 4.0g 20 tube stbr408 stbr408 gbu 4.0g 20 tube n epoxy meets ul94,v0 n cooling method: c n recommended torque value: 0.8 m.n n maximum torque value: 1.0 m.n
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