this is information on a product in full production. december 2012 doc id 2973 rev 5 1/8 8 bzw50 transil?, transient voltage surge suppressor (tvs) datasheet ? production data features peak pulse power: 5000 w (10/1000 s) stand-off voltage range from 10 v to 180 v unidirectional and bidirectional types low clamping factor fast response time ul497b, file number: qvgq2.e136224 description transil diodes provide high overvoltage protection by clamping action. their instantaneous response to transient overvoltages makes them particularly suited to protect voltage sensitive devices such as mos technology and low voltage supplied ics. tm:transil is a trademarks of stmicroelectronics. r6 www.st.com
characteristics bzw50 2/8 doc id 2973 rev 5 1 characteristics figure 1. electrical characteristics - definitions figure 2. pulse definition for electrical characteristics table 1. absolute maximum ratings (t amb = 25 c) symbol parameter value unit p pp peak pulse power dissipation (1) t j initial = t amb 5000 w p power dissipation on infinite heatsink t amb = 75 c 6.5 w i fsm non repetitive surge peak forward current for unidirectional types t p = 10 ms t j initial = t amb 500 a t stg storage temperature range -65 to + 175 c t j maximum operating junction temperature 175 c t l maximum lead temperature for soldering during 10 s at 5 mm from case. 260 c 1. for a surge greater than the maximum val ues, the diode will fail in short-circuit. table 2. thermal resistances symbol parameter value unit r th(j-l) junction to leads 15 c/w r th(j-a) junction to ambient on printed circuit. l lead = 10 mm 65 v cl v br v rm i rm i r i pp v i i rm i r i pp v rm v br v cl v cl v br v rm i rm i r i pp v i i rm i r i pp v rm v br v cl v cl v br v rm i rm i r i pp v i i f v f v cl v br v rm i rm i r i pp v i i f v f unidirectional bidirectional symbol parameter v stand-off voltage v breakdown voltage v clamping voltage i leakage current @ v i peak pulse current t voltage temperature coefficient v forward voltage drop r dynamic resistance rm br cl rm rm pp f d repetitive pulse current t r = rise time (s) t p = pulse duration time (s) t r t p
bzw50 characteristics doc id 2973 rev 5 3/8 table 3. electrical characteristics - values (t amb = 25 c) order code i rm @ v rm v br @ i r (1) v cl @ i pp 10/1000 s v cl @ i pp 8/20s ? t (2) c (3) max min max max max typ unidirectional bidirectional a v v ma v a v a 10 -4 / c pf bzw50-10 bzw50-10b 5 10 11.1 1 18.8 266 23.4 2564 7.8 24000 bzw50-12 bzw50-12b 5 12 13.3 1 22 227 28 2143 8.4 18500 bzw50-15 bzw50-15b 5 15 16.6 1 26.9 186 35 1714 8.8 13500 bzw50-18 bzw50-18b 5 18 20 1 32.2 155 41.5 1446 9.2 11500 bzw50-22 bzw50-22b 5 22 24.4 1 39.4 127 51 1177 9.6 8500 bzw50-27 bzw50-27b 5 27 30 1 48.3 103 62 968 9.8 7000 bzw50-33 bzw50-33b 5 33 36.6 1 59 85 76 789 10 5750 bzw50-39 bzw50-39b 5 39 43.3 1 69.4 72 90 667 10.1 4800 bzw50-47 bzw50-47b 5 47 52 1 83.2 60.1 108 556 10.3 4100 bzw50-56 bzw50-56b 5 56 62.2 1 99.6 50 129 465 10.4 3400 bzw50-68 bzw50-68b 5 68 75.6 1 121 41 157 382 10.5 3000 bzw50-82 bzw50-82b 5 82 91 1 145 34 189 317 10.6 2600 BZW50-100 BZW50-100b 5 100 111 1 179 28 228 263 10.7 2300 bzw50-120 bzw50-120b 5 120 133 1 215 23 274 219 10.8 1900 bzw50-150 bzw50-150b 5 150 166 1 269 19 343 175 10.8 1700 bzw50-180 bzw50-180b 5 180 200 1 322 16 410 146 10.8 1500 1. pulse test: t p < 50 ms. 2. ? v br = ? t (t amb - 25) v br (25c). 3. v r = 0 v, f = 1 mhz. for bidirectional types, capacitance valu e is divided by 2.
characteristics bzw50 4/8 doc id 2973 rev 5 figure 3. peak power dissipation vs. initial junction temperature (printed circuit board) figure 4. peak pulse power vs. exponential pulse duration 0 0 20 40 60 80 100 20 40 60 80 100 120 140 160 180 200 % t j initial(c) 0.001 0.01 0.1 1 10 100 1e2 1e3 1e4 1e5 1e6 1e7 p p (w) p tp(ms)expo. t j initial(c) figure 5. clamping voltage vs. peak pulse current (1) figure 6. capacitance vs. reverse applied voltage for unidirectional types (typical values). 1. the curves in figure 5 are specified for a junction temperature of 25 c before surge. the given results may be extrapolated for other junction temperatur es by using the following formula: ? v br = ? t x [t amb -25] x v br (25 c) for intermediate voltages, ex trapolate the given results. 0.1 1 10 100 1000 10000 10 100 1000 v cl ipp (a) v ( v ) cl ipp (a) bzw50 -180 bzw50 - 82 bzw50 - 82 bzw50 - 82 bzw50 - 39 bzw50 - 12 bzw50 - 18 bzw50 - 12 bzw50 - 10 t %ipp 100 50 0 t r t<10 s r t t %ipp 100 50 0 t r t<10 s r t p t j initial(c) c(nf) 110100 1 10 100 v(v) r b z w 5 0 - 3 9 b z w 5 0 - 8 2 b z w 5 0 - 1 8 0 b z w 5 0 - 1 0 b z w 5 0 - 1 8 0.1 500 t j = 25 c f = 1 mhz figure 7. capacitance vs. reverse applied voltage for bidirectional types (typical values) figure 8. peak forward voltage drop vs. peak forward current for unidirectional types (typical value). (1) 1. multiply by 2 for units with v br > 220 v. c(nf) 110100 1 10 100 v(v) r 0.1 500 b z w 5 0 - 1 8 0b b z w 5 0 - 3 9b b z w 5 0 - 8 2b b z w 5 0 - 1 0b b z w 5 0 - 1 8b t j = 25 c f = 1 mhz
bzw50 ordering information scheme doc id 2973 rev 5 5/8 2 ordering information scheme figure 11. ordering information scheme figure 9. transient thermal impedance junction to ambient vs. pulse duration figure 10. relative variation of leakage current vs. junction temperature 0.01 0.1 1 10 100 1000 1 10 100 zth (j-a) (c/w) t (s) p bzw 50 10 ca rl transil peak pulse power breakdown voltage packaging 50 = 5000 w 100 = 100 v blank = ammopack tape rl = tape and reel types a = unidirectional ca = bidirectional
package information bzw50 6/8 doc id 2973 rev 5 3 package information epoxy meets ul94, v0 lead-free package 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. table 4. r6 dimensions ref. dimensions millimeters inches min. max. min. max. a 8.6 9.1 0.338 0.358 b25.4 1 ? c 8.6 9.1 0.338 0.358 ? d 1.2 1.3 0.047 0.051 table 5. marking unidirectional order code marking bidirectional order code marking bzw50-10 bzw50-10 bzw50-10b bzw50-10b bzw50-12 bzw50-12 bzw50-12b bzw50-12b bzw50-15 bzw50-15 bzw50-15b bzw50-15b bzw50-18 bzw50-18 bzw50-18b bzw50-18b bzw50-22 bzw50-22 bzw50-22b bzw50-22b bzw50-27 bzw50-27 bzw50-27b bzw50-27b bzw50-33 bzw50-33 bzw50-33b bzw50-33b bzw50-39 bzw50-39 bzw50-39b bzw50-39b bzw50-47 bzw50-47 bzw50-47b bzw50-47b bzw50-56 bzw50-56 bzw50-56b bzw50-56b bzw50-68 bzw50-68 bzw50-68b bzw50-68b bzw50-82 bzw50-82 bzw50-82b bzw50-82b BZW50-100 BZW50-100 BZW50-100b BZW50-100b bzw50-120 bzw50-120 bzw50-120b bzw50-120b bzw50-150 bzw50-150 bzw50-150b bzw50-150b bzw50-180 bzw50-180 bzw50-180b bzw50-180b ?c ?d a bb
bzw50 ordering information doc id 2973 rev 5 7/8 4 ordering information 5 revision history table 6. ordering information order code marking (1) 1. logo, date code, type code, cathode band (for unidirectional types only). package weight base qty delivery mode bzw50xxxx see ta b l e 5 r6 2.050g 1000 tape and reel bzw50xxxxb bzw50xxxxrl 100 ammopack bzw50xxxxbrl table 7. document revision history date revision changes feb-2003 4 last update 14-dec-2012 5 updated ecopack statement.
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