page 1 formosa ms sfm31-bs thru sfm38-bs 1 2 2 2 2 3 4 4 4 5 6 6 7 list list................................................................................................. package outline............................................................................... features.......................................................................................... maximum ratings ............................................................................. rating and characteristic curves........................................................ pinning information........................................................................... marking........................................................................................... suggested solder pad layout............................................................. packing information.......................................................................... reel packing.................................................................................... suggested thermal profiles for soldering processes............................. high reliability test capabilities........................................................... mechanical data............................................................................... http://www.formosams.com/ tel:886-2-22696661 fax:886-2-22696141 document id issued date revised date revision page. ds-121445 2011/09/26 - a 7 chip super fast rectifiers
package outline page 2 formosa ms batch process design, excellent power dissipation offers better reverse leakage current and thermal resistance. low profile surface mounted application in order to optimize board space. high current capability. high surge current capability. glass passivated chip junction. features lead-free parts meet rohs requirments. ? superfast recovery time for switching mode application. ? suffix "-h" indicates halogen free parts, ex. sfm31-bs-h. ? ? ? ? ? ? 3.0a surface mount super fast rectifiers-50-600v parameter conditions forward rectified current forward surge current reverse current diode junction capacitance storage temperature see fig.2 8.3ms single half sine-wave (jedec methode) f=1mhz and applied 4v dc reverse voltage symbol min. typ. max. unit i o i fsm i r c j t stg a a ua o c pf 3.0 100 5.0 +175 -65 v = v t = 25 c r rrm j o v = v t = 125 c r rrm j o 45 100 sfm31-bs SFM32-BS sfm33-bs 50 100 150 35 70 105 symbols v rrm (v) v rms v r (v) (v) *1 *2 *3 v f (v) *4 sfm34-bs sfm35-bs 200 300 140 210 1.70 -55 to +150 sfm36-bs sfm37-bs 400 500 280 350 t rr (ns) *5 35 50 100 150 200 300 400 500 0.95 1.25 sfm38-bs 600 600 420 (c) o operating temperature t, j http://www.formosams.com/ tel:886-2-22696661 fax:886-2-22696141 document id issued date revised date revision page. *1 repetitive peak reverse voltage *2 rms voltage *3 continuous reverse voltage *4 maximum forward voltage@i =3.0a f *5 maximum reverse recovery time, note 1 note 1. reverse recovery time test condition, i =0.5a, i =1.0a, i =0.25a frrr ds-121445 2011/09/26 - a 7 mechanical data epoxy:ul94-v0 rated flame retardant case : molded plastic, terminals : solder plated, solderable per mil-std-750, method 2026 polarity : indicated by cathode band mounting position : any weight : 0.072 gram ? ? ? ? ? ? do-214aa / smb-s approximated sfm31-bs thru sfm38-bs dimensions in inches and (millimeters) smb-s 0.220(5.6) 0.205(5.2) 0.020(0.5) typ. 0.138(3.5) 0.122(3.1) 0.075(1.9) 0.083(2.1) 0.067(1.7) 0.060(1.5) 0.040 (1.0) typ. 0.040(1.0) typ. maximum ratings and electrical characteristics (at t =25 a o c unless otherwise noted) chip super fast rectifiers
page 3 .4 .6 .8 1.0 1.2 1.4 .003 .03 .3 3.0 10 rating and characteristic curves (sfm31-bs thru sfm38-bs) fig.1-typical forward characteristics instantaneous for ward current ,(a) forward voltage,(v) pulse width 300us 1% duty cycle (+) (+) 25vdc (approx.) ( ) ( ) pulse generator (note 2) oscilliscope (note 1) 1 non- inductive notes: 1. rise time= 7ns max., input impedance= 1 megohm.22pf. 2. rise time= 10ns max., source impedance= 50 ohms. +0.5a 0 -0.25a -1.0a | | | | | | | | 1cm set time base for 50 / 10ns / cm trr d.u.t. fig.3- test circuit diagram and reverse recovery time characteristics 10 noninductive 50 noninductive t =25 c j fig.2-typical forward current average for ward current ,(a) 0.6 1.2 1.8 2.4 3.0 3.6 derating curve lead temperature ( c) 1.6 1.8 sfm35-bs~sfm36-bs sfm31-bs~sfm34-bs 0 25 50 75 100 125 150 175 0 fig.4-maximum non-repetitive forward surge current 20 0 40 60 80 100 number of cycles at 60hz 110 5 50 100 t =25 c j 8.3ms single half sine wave jedec method peak for ward surge current ,(a) sfm37-bs~sfm38-bs http://www.formosams.com/ tel:886-2-22696661 fax:886-2-22696141 document id issued date revised date revision page. ds-121445 2011/09/26 - a 7 fig.5-typical junction capacitance reverse voltage,(v) junction cap acitance,(pf) 0 1 . 10 1000 1 0 . 4 0 . 10 100 100 tj 25 c = f1 0hz =.m p.c.b. mounted on 0.2"x0.2" (5.0 mm x 5.0 mm) copper pad areas
pinning information pin1 cathode pin2 anode pin simplified outline symbol suggested solder pad layout page 4 1 2 formosa ms marking type number marking code sfm31-bs s31 SFM32-BS s32 sfm33-bs s33 sfm34-bs s34 sfm35-bs s35 sfm36-bs s36 sfm37-bs s37 sfm38-bs s38 http://www.formosams.com/ tel:886-2-22696661 fax:886-2-22696141 document id issued date revised date revision page. ds-121445 2011/09/26 - a 7 sfm31-bs thru sfm38-bs dimensions in inches and (millimeters) a c b b 0.059 (1.50) a 0.078 (2.00) c 0.110 (2.80) package smb-s 1 2 chip super fast rectifiers
page 5 formosa ms http://www.formosams.com/ tel:886-2-22696661 fax:886-2-22696141 document id issued date revised date revision page. ds-121445 2011/09/26 - a 7 sfm31-bs thru sfm38-bs packing information item tolerance smb-s carrier width carrier length carrier depth sprocket hole 13" reel outside diameter 7" reel outside diameter 13" reel inner diameter 7" reel inner diameter feed hole diameter sprocket hole position punch hole position punch hole pitch sprocket hole pitch embossment center reel width overall tape thickness tape width p 0 p 1 e b c d f t w p a d d d 1 d 1 d 2 w 1 symbol 0.1 0.1 0.1 min min 0.5 0.1 0.3 1.0 0.1 0.1 0.1 0.1 0.1 0.1 2.0 2.0 unit:mm 1.50 330.00 178.00 50.00 62.00 13.00 1.75 5.50 8.00 4.00 2.00 0.23 12.00 18.00 p 0 p 1 e b d f w p a d d 1 d 2 w 1 c t note:devices are packed in accor dance with eia standar rs-481-a and specifications listed above. 3.81 5.74 2.24 chip super fast rectifiers
page 6 formosa ms http://www.formosams.com/ tel:886-2-22696661 fax:886-2-22696141 document id issued date revised date revision page. profile feature soldering condition average ramp-up rate(t to t ) <3 /sec preheat -temperature min(tsmin) 150 -temperature max(tsmax) 200 -time(min to max)(t ) 60~120sec tsmax to t -ramp-uprate <3 /sec time maintained above: -temperature(t ) 217 -time(t ) 60~260sec peak temperature(t ) 255 0/ 5 time within 5 of actual peak temperature(t ) ramp-down rate <6 /sec time 25 to peak temperature <6minutes lp s l l l p p o o o o o oo o o o c c c c c c- + c c c c 3.reflow soldering 10~30sec 1.storage environment: temperature=5 ~40 humidity=55%25% 2.reflow soldering of surface-mount devices oo cc suggested thermal profiles for soldering processes critical zone tl to tp critical zone tl to tp tl tsmax tsmin ramp-up tp ts preheat t25 c to peak o time 25 tl tp ramp-down temperature ds-121445 2011/09/26 - a 7 sfm31-bs thru sfm38-bs reel packing smb-s 4,000 8.0 8,000 337*337*37 330 350*330*360 64,000 16.9 package reel size reel component spacing box inner box reel dia, carton size carton approx. gross weight (kg) (pcs) (m/m) (m/m) (m/m) (pcs) (m/m) (pcs) 13" chip super fast rectifiers
page 7 formosa ms http://www.formosams.com/ tel:886-2-22696661 fax:886-2-22696141 document id issued date revised date revision page. ds-121445 2011/09/26 - a 7 sfm31-bs thru sfm38-bs 1. solder resistance 2. solderability 3. high temperature reverse bias 4. forward operation life 5. intermittent operation life 6. pressure cooker 7. temperature cycling 8. forward surge 9. humidity 10. high temperature storage life at 260 5 for 10 2sec. immerse body into solder 1/16" 1/32" at 245 5 for 5 sec. v =80% rate at t =150 for 168 hrs. rated average rectifier current at t =25 for 500hrs. t = 25 c, i = i on state: power on for 5 min. off state: power off for 5 min. on and off for 500 cycles. 15p at t =121 for 4 hrs. -55 to +125 dwelled for 30 min. and transferred for 5min. total 10 cycles. 8.3ms single half sine-wave , one surge. at t =85 , rh=85% for 1000hrs. at 175 for 1000 hrs. c c c c c cc c c o o o o o oo o o rj a afo sig a a o mil-std-750d method-2031 mil-std-202f method-208 mil-std-750d method-1038 mil-std-750d method-1027 mil-std-750d method-1036 mil-std-750d method-1051 mil-std-750d method-4066-2 mil-std-750d method-1021 mil-std-750d method-1031 jesd22-a102 item test conditions reference high reliability test capabilities chip super fast rectifiers
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