features n superior circuit protection n overcurrent and overvoltage protection n blocks surges up to rated limits n high-speed performance n small smt package n agency listing: applications n voice / vdsl cards n protection modules and dongles n process control equipment n test and measurement equipment n general electronics tbu-ca series - tbu ? high-speed protectors *rohs directive 2002/95/ec jan. 27, 2003 including annex and rohs recast 2011/65/eu june 8, 2011. specifcations are subject to change without notice. the device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time. users should verify actual device performance in their specifc applications. general information the tbu-ca series of bourns ? tbu ? products are low capacitance single bidirectional high-speed protection components, constructed using mosfet semiconductor technology, and designed to protect against faults caused by short circuits, ac power cross, induction and lightning surges. the tbu ? high-speed protector placed in the system circuit will monitor the current with the mosfet detection circuit triggering to provide an effective barrier behind which sensitive electronics will not be exposed to large voltages or currents during surge events. the tbu ? device is provided in a surface mount dfn package and meets industry standard requirements such as rohs and pb free solder refow profles. agency listing description ul file number: e315805 absolute maximum ratings (@ t a = 25 c unless otherwise noted) symbol parameter part number value unit v imp peak impulse voltage withstand with duration less than 10 ms tbu-ca025-xxx-wh tbu-ca040-xxx-wh tbu-ca050-xxx-wh tbu-ca065-xxx-wh tbu-ca085-xxx-wh 250 400 500 650 850 v v rms continuous a.c. rms voltage tbu-ca025-xxx-wh tbu-ca040-xxx-wh tbu-ca050-xxx-wh tbu-ca065-xxx-wh tbu-ca085-xxx-wh 100 200 250 300 425 v t op operating temperature range -55 to +125 c t stg storage temperature range -65 to +150 c t jmax maximum junction temperature +125 c esd hbm esd protection per iec 61000-4-2 2 kv tbu ? device line in/ line out line out/ line in *rohs compliant lead free *rohs compliant versions available lead free versions are rohs compliant* asia-pacifc: tel: +886-2 2562-4117 ? fax: +886-2 2562-4116 emea: tel: +36 88 520 390 ? fax: +36 88 520 211 the americas: tel: +1-951 781-5500 ? fax: +1-951 781-5700 www.bourns.com
tbu-ca series - tbu ? high-speed protectors electrical characteristics (@ t a = 25 c unless otherwise noted) symbol parameter part number min. typ. max. unit i trigger current required for the device to go from operating state to protected state tbu-caxxx-050-wh tbu-caxxx-100-wh tbu-caxxx-200-wh tbu-caxxx-300-wh tbu-caxxx-500-wh 50 100 200 300 500 75 150 300 450 750 100 200 400 600 1000 ma r device series resistance of the tbu device v imp = 250 v i trigger (min.) = 50 ma v imp = 250 v i trigger (min.) = 100 ma v imp = 250 v i trigger (min.) = 200 ma v imp = 250 v i trigger (min.) = 300 ma v imp = 250 v i trigger (min.) = 500 ma v imp = 400 v i trigger (min.) = 50 ma v imp = 400 v i trigger (min.) = 100 ma v imp = 400 v i trigger (min.) = 200 ma v imp = 400 v i trigger (min.) = 300 ma v imp = 400 v i trigger (min.) = 500 ma v imp = 500 v i trigger (min.) = 50 ma v imp = 500 v i trigger (min.) = 100 ma v imp = 500 v i trigger (min.) = 200 ma v imp = 500 v i trigger (min.) = 300 ma v imp = 500 v i trigger (min.) = 500 ma v imp = 650 v i trigger (min.) = 50 ma v imp = 650 v i trigger (min.) = 100 ma v imp = 650 v i trigger (min.) = 200 ma v imp = 650 v i trigger (min.) = 300 ma v imp = 650 v i trigger (min.) = 500 ma v imp = 850 v i trigger (min.) = 50 ma v imp = 850 v i trigger (min.) = 100 ma v imp = 850 v i trigger (min.) = 200 ma v imp = 850 v i trigger (min.) = 300 ma v imp = 850 v i trigger (min.) = 500 ma tbu-ca025-050-wh tbu-ca025-100-wh tbu-ca025-200-wh tbu-ca025-300-wh tbu-ca025-500-wh tbu-ca040-050-wh tbu-ca040-100-wh tbu-ca040-200-wh tbu-ca040-300-wh tbu-ca040-500-wh tbu-ca050-050-wh tbu-ca050-100-wh tbu-ca050-200-wh tbu-ca050-300-wh tbu-ca050-500-wh tbu-ca065-050-wh TBU-CA065-100-WH tbu-ca065-200-wh tbu-ca065-300-wh tbu-ca065-500-wh tbu-ca085-050-wh tbu-ca085-100-wh tbu-ca085-200-wh tbu-ca085-300-wh tbu-ca085-500-wh 13.3 7.1 4.2 3.2 2.6 14.3 8.1 5.2 4.3 3.6 15.7 9.5 6.6 5.6 5.0 17.7 11.5 8.6 7.6 7.0 21.4 15.2 12.3 11.3 10.7 15.3 8.2 4.8 3.8 3.0 16.5 9.4 6.0 5.0 4.2 18.0 10.9 7.5 6.5 5.7 20.3 13.2 9.8 8.8 8.0 24.5 17.4 14.0 13.0 12.2 ? t block time for the device to go from normal operating state to protected state 1 s i q current through the triggered tbu ? device with 50 vdc circuit voltage 0.25 0.50 1.00 ma v reset voltage below which the triggered tbu ? device will transition to normal operating state 12 16 20 v r th(j-l) junction to package pads - fr4 using recommended pad layout 98 c/w r th(j-l) junction to package pads - fr4 using heat sink on board (6 cm 2 ) (1 in 2 ) 40 c/w specifcations are subject to change without notice. the device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time. users should verify actual device performance in their specifc applications.
1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0.0 -75 -50 -25 02 55 07 5 100 125 150 junction temperature (c) normalized trip current 2.2 1.6 1.8 2.0 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0.0 -75 -50 -25 02 55 07 5 100 125 150 junction temperature (c) normalized resistance tbu-ca series - tbu ? high-speed protectors reference application the tbu ? devices are general use protectors used in a wide variety of applications. the maximum voltage rating of the tbu ? device should never be exceeded. where necessary, an ovp should be employed to limit the maximum voltage. a cost- effective protection solution combines bourns ? tbu ? protection devices with a pair of bourns ? movs. for bandwidth sensitive applications, a bourns ? gdt may be substituted for the mov. the tbu ? device, constructed using mosfet semiconductor technology, placed in the system circuit will monitor the current with the mosfet detection circuit triggering to provide an effective barrier behind which sensitive electronics are not exposed to large voltages or currents during surge events. the tbu ? device operates in approximately 1 s - once line current exceeds the tbu ? devices trigger current i trigger . when operat- ed, the tbu ? device will limit the current to less than the i trigger value within the t block duration. if voltage above v reset is contin- uously sustained, the tbu ? device will subsequently reduce the current to a quiescent current level within a period of time that is dependent upon the applied voltage. after the surge, the tbu ? device resets when the voltage across the tbu ? device falls to the v reset level. the tbu ? device will automatically reset on lines which have no dc bias or have dc bias below v reset (such as unpowered signal lines). if the line has a normal dc bias above v reset , the voltage across the tbu ? device may not fall below v reset after the surge. in such cases, special care needs to be taken to ensure that the tbu ? device will reset, with software monitoring as one method used to accomplish this. bourns application engineers can provide further assistance. basic tbu operation performance graphs typical v-i characteristics (tbu-ca050-300-wh) typical trigger current vs. temperature equip. ovp ovp line line tbu ? device tbu ? device line in / line out line out / line in line out / line in line in / line out typical resistance vs. temperature power derating curve current (100 ma/div) voltage (5 v/div) i trip v reset no additional pcb cu 0.5 sq. in. additional pcb cu junction temperature (c) 20 3.0 2.5 2.0 1.5 1.0 0.5 0.0 40 60 80 100 120 140 total max. power (w) ? ?? ? ? ? ? ? ? 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0.0 -75 -50 -25 02 55 07 5 100 125 150 junction temperature (c) normalized trip current 2.2 1.6 1.8 2.0 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0.0 -75 -50 -25 02 55 07 5 100 125 150 junction temperature (c) normalized resistance
tbu-ca series - tbu ? high-speed protectors product dimensions dimensions: mm (inches) recommended pad layout tbu ? high-speed protectors have a 100 % matte-tin termination fnish. for improved thermal dissipation, the recommended layout uses pcb copper areas which extend beyond the exposed solder pad. the exposed solder pads should be defned by a solder mask which matches the pad layout of the tbu ? device in size and spac- ing. it is recommended that they should be the same dimension as the tbu ? pads but if smaller solder pads are used, they should be centered on the tbu ? package terminal pads and not more than 0.10-0.12 mm (0.004-0.005 in.) smaller in overall width or length. solder pad areas should not be larger than the tbu ? pad sizes to ensure adequate clearance is maintained. the recommended stencil thickness is 0.10-0.12 mm (0.004-0.005 in.) with a stencil opening size 0.025 mm (0.0010 in.) less than the solder pad size. extended copper areas beyond the solder pad signifcantly improv e the junction to ambient thermal resistance, resulting in operation at lower junction temperatures with a corresponding beneft of reli- ability. all pads should soldered to the pcb, including pads marked as nc or nu but no electrical connection should be made to these pads. for minimum parasitic capacitance, it is recommended that signal, ground or power signals are not routed beneath any pad. 13 2 pin 1 & backside chamfer 4.00 0.10 (.157 .004) 0.00 - 0.05 (.000 - .002) 6.50 0.10 (.256 .004) 0.30 (.012) 3.40 (.134) 0.30 (.012) 1.85 (.073) 0.70 (.028) 0.70 (.028) 0.80 (.031) 1.85 (.073) c pin 1 0.25 (.010) 3.55 (.140) 0.70 (.028) 0.80 (.031) 1.85 (.073) 1.85 (.073) 3.55 (.140) 3 2 1 a = a1 = seating plane 0.80 - 1.00 (.031 - .039) xxxxx ywwll 13 2 pin 1 & backside chamfer 4.00 0.10 (.157 .004) 0.00 - 0.05 (.000 - .002) 6.50 0.10 (.256 .004) 0.30 (.012) 3.40 (.134) 0.30 (.012) 1.85 (.073) 0.70 (.028) 0.70 (.028) 0.80 (.031) 1.85 (.073) c pin 1 0.25 (.010) 3.55 (.140) 0.70 (.028) 0.80 (.031) 1.85 (.073) 1.85 (.073) 3.55 (.140) 3 2 1 a = a1 = seating plane 0.80 - 1.00 (.031 - .039) xxxxx ywwll pad # pin out 1 line in/out 2 nu 3 line out/in pad designation dark grey areas show added pcb copper area for better thermal resistance. specifcations are subject to change without notice. the device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time. users should verify actual device performance in their specifc applications.
tbu-ca series - tbu ? high-speed protectors refow profle 32 1 3.55 (.140) 0.70 (.028) 1.15 (.045) 2.625 (.103) pin 1 top view side view bottom view a d be c jj n n h e k k f profle feature pb-free assembly average ramp-up rate (tsmax to tp) 3 c/sec. max. preheat - temperature min. (tsmin) - temperature max. (tsmax) - time (tsmin to tsmax) 150 c 200 c 60-180 sec. time maintained above: - temperature (tl) - time (tl) 217 c 60-150 sec. peak/classifcation temperature (tp) 260 c time within 5 c of actual peak temp. (tp) 20-40 sec. ramp-down rate 6 c/sec. max. time 25 c to peak temperature 8 min. max. how to order tbu - ca 085 - 500 - wh tbu ? product series ca = bi-series impulse voltage rating 025 = 250 v 040 = 400 v 050 = 500 v 065 = 650 v 085 = 850 v trigger current 050 = 50 ma 100 = 100 ma 200 = 200 ma 300 = 300 ma 500 = 500 ma hold to trip ratio suffx w = hold to trip ratio package suffx h = dfn package typical part marking thermal resistance vs additional pcb cu area added cu area (sq. in.) 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 120 100 80 60 40 20 0 thermal resistance (c/w) specifcations are subject to change without notice. the device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time. users should verify actual device performance in their specifc applications. pin 1 manufacturer?s trademark 5 digit product code: ? 1st alpha character indicates product family: a = tbu-ca series ? 2nd & 3rd digits indicate impulse voltage. ? 4th & 5th digits indicate trigger current. manufacturing date code: ? 1st digit indicates the year. ? 2nd & 3rd digits indicate the week number. ? 4th & 5th digits indicate lot code. xxxxx ywwll
specifcations are subject to change without notice. the device characteristics and parameters in this data sheet can and do vary in different applications and actual device performance may vary over time. users should verify actual device performance in their specifc applications. tbu-ca series - tbu ? high-speed protectors tbu is a registered trademark of bourns, inc. in the united states and other countries. rev. 01/17 packaging specifcations b a d c n f g (measured at hub) user direction of feed k 0 b 0 p 2 d 1 center lines of ca vity embossment t d p 0 top cover ta pe e w p a 0 dimensions: mm (inches) a b c d g n min. max. min. max. min. max. min. max. ref. ref. 326 (12.835) 330 (13.002) 1.5 (.059) 2.5 (.098) 12.8 (.504) 13.5 (.531) 20.2 (.795) - 16.5 (.650) 102 (4.016) a 0 b 0 d d 1 e f min. max. min. max. min. max. min. max. min. max. min. max. 4.3 (.169) 4.5 (.177) 6.7 (.264) 6.9 (.272) 1.5 (.059) 1.6 (.063) 1.5 (.059) - 1.65 (.065) 1.85 (.073) 7.4 (.291) 7.6 (.299) k 0 p p 0 p 2 t w min. max. min. max. min. max. min. max. min. max. min. max. 1.0 (.039) 1.2 (.047) 7.9 (.311) 8.1 (.319) 3.9 (.159) 4.1 (.161) 1.9 (.075) 2.1 (.083) 0.25 (.010) 0.35 (.014) 15.7 (.618) 16.3 (.642) quantity: 3000 pieces per reel
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