tpa series bidirectional crowbar protection. voltage range: from 62 v to 270 v. holding current : i h = 150ma min. repetitive peak pulse current : i pp = 50 a, 10/1000 m s. features f126 the tpa series are trisil devices especially de- signed for protecting sensitive telecommunication equipment against lightning and transient voltages induced by ac power lines. they are available in the f126 axial package. trisil devices provide bidirectional protection by crowbar action. their characteristic response to transient overvoltages makes them particularly suited to protect voltage sensitive telecommuni- cation equipment. description schematic diagram trisil ? complies with the following standards: peak surge voltage (v) voltage waveform ( m s) current waveform ( m s) admissible ipp (a) necessary resistor ( w ) (ccitt) itu-k20 1000 10/700 5/310 25 - (ccitt) itu-k17 1500 10/700 5/310 38 - vde0433 2000 10/700 5/310 50 - vde0878 2000 1.2/50 1/20 50 - iec-1000-4-5 level 3 level 4 10/700 1.2/50 5/310 8/20 50 100 - - fcc part 68, lightning surge type a 1500 800 10/160 10/560 10/160 10/560 75 55 12.5 6.5 fcc part 68, lightning surge type b 1000 9/720 5/320 25 - bellcore tr-nwt-001089 first level 2500 1000 2/10 10/1000 2/10 10/1000 150 50 11.5 10 bellcore tr-nwt-001089 second level 5000 2/10 2/10 150 11.5 cnet l31-24 1000 0.5/700 0.8/310 25 - ? october 1998 - ed: 9a 1/5
symbol parameter v rm stand-off voltage i rm leakage current at stand-off voltage v r continuous reverse voltage v br breakdown voltage v bo breakover voltage i h holding current i bo breakover current i pp peak pulse current c capacitance electrical characteristics (t amb =25 c) symbol parameter value unit r th (j-l) junction to leads (l lead = 10mm) 60 c/w r th (j-a) junction to ambient on printed circuit (l lead = 10 mm) 100 c/w thermal resistances note 1: i r measured at v r guarantee v brmin v r note 2: measured at 50 hz (1 cycle) - see test circuit 1. note 3: see test circuit 2. note 4: v r = 1v, f = 1mhz. refer to fig.3 for c versus v r . type i rm @v rm i r @v r v bo @i bo i h c max. max. note 1 max. note 2 min. note 3 max. note 4 m av m av vmamapf tpa62 tpa68 tpa100 tpa120 tpa130 tpa180 tpa200 tpa220 tpa240 tpa270 2 2 2 2 2 2 2 2 2 2 56 61 90 108 117 162 180 198 216 243 50 50 50 50 50 50 50 50 50 50 62 68 100 120 130 180 200 220 240 270 82 90 133 160 173 240 267 293 320 360 800 800 800 800 800 800 800 800 800 800 150 150 150 150 150 150 150 150 150 150 150 150 100 100 100 100 100 100 100 100 symbol parameter value unit p power dissipation on infinite heatsink t amb =50 c 1.7 w i pp peak pulse current 10/1000 m s 8/20 m s 50 100 a i tsm non repetitive surge peak on-state current tp = 20 ms 30 a i 2 ti 2 t value for fusing tp = 20 ms 9 a 2 s dv/dt critical rate of rise of off-state voltage v rm 5 kv/ m s t stg t j storage temperature range maximum junction temperature - 55 to + 150 150 c c t l maximum lead temperaturefor soldering during 10s at 5mm from case 230 c absolute maximum ratings (t amb =25 c) tpa series 2/5
test circuit 1 for i bo and v bo parameters: 220v static relay. r1 r2 240 140 d.u.t v bo measure i bo measure tp = 20ms k transformer 220v/800v 5a auto transformer 220v/2a v out test procedure : pulse test duration (tp = 20ms): - for bidirectional devices = switch k is closed - for unidirectional devices = switch k is open. v out selection - device with v bo < 200 volt -v out = 250 v rms ,r 1 = 140 w . - device with v bo 200 volt -v out = 480 v rms ,r 2 = 240 w . test circuit 2 for i h parameter. r -v p v bat = - 48 v surge generator d.u.t. this is a go-nogo test which allows to confirm the holding current (i h ) level in a functional test circuit. test procedure : 1) adjust the current level at the i h value by short circuiting the ak of the d.u.t. 2) fire the d.u.t with a surge current : ipp = 10a , 10/1000 m s. 3) the d.u.t will come back off-state within 50 ms max. tpa series 3/5
tsm (a) fig. 1: non repetitive surge peak on-state current versus overload duration (tj initial=25 c). fig. 2: relative variation of holding current versus junction temperature. tp(s) fig. 5: transient thermal impedance junction to ambient versus pulse duration (for fr4 pc board with t lead = 10 mm). v (v) r fig. 3: relative variation of junction capacitance versus reverse applied voltage (typical values). note: for v rm upper than 56v, the curve is extrapolated(dotted line). i (a) t v (v) t fig. 4: on-state current versus on-state voltage (typical values). tpa series 4/5
order code tpa 100 rl voltage packaging: rl = tape and reel. = ammopack. trisil protection 50a packaging : standard packaging is in tape and reel. marking : logo, date code, part number. 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 ? 1998 stmicroelectronics - printed in italy - all rights reserved. stmicroelectronics group of companies australia - brazil - canada - china - france - germany - italy - japan - korea - malaysia - malta - mexico - morocco - the netherlands - singapore - spain - sweden - switzerland - taiwan - thailand - united kingdom - u.s.a. http://www.st.com weight: 0.40 g package mechanical data f126 plastic ac c d d b ref. dimensions millimeters inches min. typ. max. min. typ. max. a 6.05 6.20 6.35 0.238 0.244 0.250 b 2.95 3.00 3.05 0.116 0.118 0.120 c 26 31 1.024 1.220 d 0.76 0.81 0.86 0.030 0.032 0.034 tpa series 5/5
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