features high-speed performance superior overcurrent protection bidirectional low resistance excellent channel to channel resistance matching small smt package rohs compliant* and halogen free** applications vdsl and ethernet ports protection modules and dongles process control equipment test and measurement equipment tcs-dl series - tcs ? dual transient current suppressors * rohs directive 2002/95/ec jan. 27, 2003 including annex and rohs recast 2011/65/eu june 8, 2011. ** bourns follows the prevailing de nition of ?alogen free?in the industry. bourns considers a product to be ?alogen free if (a) the bromine (br) content is 900 ppm or less; (b) the chlorine (cl) content is 900 ppm or less; and (c) the total bromine (br) and chlorine (cl) content is 1500 ppm or less . speci cations are subject to change without notice. customers should verify actual device performance in their speci c applications. general information the bourns ? tcs ? dl series high-speed protector products contain dual, well-matched, low resistance, bidirectional, very high-speed transient current suppressors. by limiting the maximum current to a safe level, a bourns ? tcs ? dl device offers superior protection for very high data rate differential lines against faults caused by short circuits, induction and lightning surges. bourns ? tcs ? high-speed protectors are typically used in conjunction with low capacitance tvs devices to form an extremely low let-through energy barrier to excessive voltages and currents during surge events which may cause damage to unprotected high-speed, low voltage driver and receiver components. absolute maximum ratings (@ t a = 25 ? unless otherwise noted) symbol parameter value unit v imp peak impulse voltage withstand with duration less than 1 ms 40 v t op operating temperature range -40 to +125 c t stg storage temperature range -65 to +150 c t jmax maximum junction temperature +125 c electrical characteristics (@ t a = 25 ? 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 tcs-dl004-250-wh TCS-DL004-500-WH tcs-dl004-750-wh 250 500 750 375 750 1100 500 1000 1500 ma r on series resistance of the tcs? device tcs-dl004-250-wh TCS-DL004-500-WH tcs-dl004-750-wh 1.6 1.0 0.7 2.3 1.4 1.0 3.0 1.8 1.3 ron channel to channel resistance match tcs-dl004-250-wh TCS-DL004-500-WH tcs-dl004-750-wh 0.05 0.03 0.02 t limit time for the device to go from normal operating state to current limiting state 50 ns r ja junction to air thermal resistance, fr4 pcb. 0.035 sq. in. of copper in addition to solder pads 130 c/w tcs ? device out2 in2 out1 in1 *rohs compliant & **halogen free asia-paci c: tel: +886-2 2562-4117 ? fax: +886-2 2562-4116 europe: tel: +41-41 768 5555 ? fax: +41-41 768 5510 the americas: tel: +1-951 781-5500 ? fax: +1-951 781-5700 www.bourns.com d045 arbc the bourns ? tcs ? high-speed protector is provided in a space-saving, surface mount dfn package meeting industry standard requirements such as rohs and pb free solder re? ow pro? les.
temperature (c) -55 -35 -15 5 25 45 65 85 105 125 0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 normalized resistance voltage (v) -1.2 -1.0 -0.8 -0.6 -0.4 -0.2 0 0.2 0.4 0.6 0.8 1.0 1.2 40 30 20 10 0 -10 -20 -30 -40 normalized current temperature (c) -55 -35 -15 5 25 45 65 85 105 125 0 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00 normalized trip current speci? cations are subject to change without notice. customers should verify actual device performance in their speci? c applications. tcs-dl series - tcs ? dual transient current suppressors performance graphs normalized v-i curve under surge conditions resistance change vs. temperature graph 1 below shows a normalized typical v-i curve for bourns tcs dl series high-speed protector products under surge conditions. graphs 2 and 3 show the change in resistance and trip current versus temperature, respectively. trip current change vs. temperature surge protection the bourns tcs high-speed protector is designed to be used in conjunction with a suitable overvoltage limiting device, such as a tvs diode or a tisp thyristor as shown below, to provide comprehensive current and voltage limiting protection against surges. coordination of bourns tcs high-speed protector with overvoltage limiting device this two-stage protection limits the maximum voltage at the interface to the clamping voltage of the overvoltage device, while also limiting the current into the protected device to the de ned limit of the bourns tcs high-speed protector. designers should choose a bourns tcs high-speed protector with a current limit that the protected device can handle for the duration of the surge event. the bourns tcs high-speed protector acts like a low value resistor during normal operation. as the bourns tcs high- speed protector has no electrical connection to anything other than the signal line it protects, the capacitance to ground is purely dictated by the capacitance of the device to surrounding components and pcb traces, which with careful layout can be kept to an absolute minimum. the bourns tcs high-speed protector can block voltages up to 40 v. this enables very low voltage electronics to be protected by a lower capacitance, higher voltage tvs device, thus achieving very low capacitive loading on high-speed signal lines. for example, on a 3.3 v driver, a 12 v rated tvs may be used, having much lower and more linear capacitance than a lower voltage type. even though a high voltage tvs is used, the maximum stress seen by the protected device is much lower than would be seen by using a low voltage tvs by itself, as the current is limited to within the maximum limits of the bourns tcs high-speed protector. the bourns tcs high-speed protector is primarily designed to offer superior and cost-effective protection of sensitive electronics against high energy surges that are transient in nature. unlike the more complex tbu high-speed protector device, the tcs protector does not exhibit a strong foldback basic device operation protected device voltage limiting device transient surge bourns ? tcs ? hsp
tcs-dl series - tcs ? dual transient current suppressors speci cations are subject to change without notice. customers should verify actual device performance in their speci c applications. basic device operation (continued) characteristic after reaching the current limit, and therefore doesn? protect against dc and low frequency stresses (typically achieved through the use of a transformer or capacitive coupling). this is analogousto comparing the shunt- ing characteristics of a transient voltage suppressor device to a thyristor type of protector, such as bourns tisp devices. both the bourns tcs high-speed protector and tvs device have limited or no foldback characteristic, and therefore have relatively low short term surge energy limits. when used together in a protection circuit, the surge must not exceed the thermal capability of either device. the following three graphs show the maximum surge duration with respect to voltage of the three tcs-dl devices at both +25 ? and +85 ?. time (seconds) 0.00001 0.0001 0.001 0.01 0.1 1 0 10 20 30 40 50 voltage across tcs device (volts) 25 ? 85 ? tcs-dl004-250-wh soa single surge duration tcs-dl004-750-wh soa single surge duration TCS-DL004-500-WH soa single surge duration time (seconds) 0.00001 0.0001 0.001 0.01 0.1 1 0 10 20 30 40 50 voltage across tcs device (volts) 25 ? 85 ? time (seconds) 0.00001 0.0001 0.001 0.01 0.1 1 0 10 20 30 40 50 voltage across tcs device (volts) 25 ? 85 ?
cdsod323-txxc 1/4 sm51589l not used tcs-dl 1ct:1ct ethernet phy to line tcs-dl series - tcs ? single transient current suppressors basic device operation (continued) coordination in all applications, the overvoltage protection device should be chosen to limit the maximum voltage across the bourns tcs high-speed protector to less than the maximum voltage rating of the device. if this maximum voltage limit is exceeded, the bourns tcs high-speed protector may begin to avalanche, and it will cease to effectively block the current into the protected device, which may result in damage. using multiple tcs-dl devices in series or parallel bourns tcs high-speed protectors may be connected in parallel to achieve even lower on-state resistance. if matching is required, use two bourns tcs-dl series hsps, and connect one bourns tcs high-speed protector from each dl device in parallel. in addition, because of their ultra-fast response, mul- tiple bourns tcs high-speed protectors may be connected in series to achieve multiples of the breakdown voltage. reference applications two good examples of applications where the combination of a bourns tcs high-speed protector and a voltage limit- ing device provides exceptional performance are in vdsl and ethernet circuits, where the line is driven differentially by a transformer. line driver1 line driver2 r1 t1 c2 c1 tip ring r2 tcs-dl1 (a) 1 w zener diode cdsot23-s2004 cdsot23-s2004 tcs-dl2 (b) basic schematic of a vdsl line driver stage tcs-dl series - tcs ? dual transient current suppressors speci cations are subject to change without notice. customers should verify actual device performance in their speci c applications gbe in the gigabit ethernet (gbe) application circuit shown below, the transformer provides additional protection against sustained dc faults and provides some isolation from surge conditions such as lightning strikes. the tcs device limits the current that the phy will be subjected to under a surge condition. it also provides voltage isolation so that the peak voltage that the phy is subjected to will be lower than the tvs diode clamp voltage. the tvs diode will sink the majority of the transformer secondary current and clamp the voltage to a level that is below the 40 v maximum rating of the tcs device. gigabit ethernet application circuit vdsl in the vdsl application shown below, the transformer provides additional protection against sustained dc faults and the cou- pling capacitors, c1 and c2, provide protection against dc and mains frequency power faults. the termination resistors r1 and r2 are reduced in value by the nominal resistance of the bourns tcs high-speed protector to maintain the overall termination resistance.
e d c b f a speci cations are subject to change without notice. customers should verify actual device performance in their speci c applications. tcs-dl series - tcs ? dual transient current suppressors pin 1 a b d c product dimensions recommended pad layout nc = solder to pcb; do not make electrical connection, do not connect to ground. pad designation bourns tcs high-speed protectors have a matte-tin termination. t he recommend- ed solder stencil thickness is 0.10 to 0.12 mm (0.004 to 0.005 in.). the stencil opening for pins 1,3,4 and 6 should be the same size as the recommended pcb pad size. the stencil open- ings for pins 2 and 5 of the device should cover 60-70 % of the area of the pcb pad and should be divided into smaller areas as shown in the solder stencil gure. pad # apply pad # apply 1 in1 4 out2 2nc5nc 3 out1 6 in2 dimensions: mm (inches) dim. tcs-dl004-250-wh TCS-DL004-500-WH tcs-dl004-750-wh min. typ. max. min. typ. max. min. typ. max. a 3.90 (.154) 4.00 (.157) 4.10 (.161) 3.90 (.154) 4.00 (.157) 4.10 (.161) 3.90 (.154) 4.00 (.157) 4.10 (.161) b 2.40 (.094) 2.50 (.098) 2.60 (.102) 3.4 (.134) 3.5 (.138) 3.6 (.142) 4.4 (.173) 4.5 (.177) 4.6 (.181) c 0.80 (.031) 0.85 (.033) 0.90 (.035) 0.80 (.031) 0.85 (.033) 0.90 (.035) 0.80 (.031) 0.85 (.033) 0.90 (.035) d 0.00 (.000) 0.025 (.001) 0.05 (.002) 0.00 (.000) 0.025 (.001) 0.05 (.002) 0.00 (.000) 0.025 (.001) 0.05 (.002) e 1.05 (.041) 1.1 (.043) 1.15 (.045) 2.05 (.081) 2.1 (.083) 2.15 (.085) 3.05 (.120) 3.1 (.122) 3.15 (.124) f 0.2 (.008) 0.25 (.010) 0.3 (.012) 0.2 (.008) 0.25 (.010) 0.3 (.012) 0.2 (.008) 0.25 (.010) 0.3 (.012) g 0.75 (.030) 0.8 (.031) 0.85 (.033) 0.75 (.030) 0.8 (.031) 0.85 (.033) 0.75 (.030) 0.8 (.031) 0.85 (.033) h 1.4 (.055) 1.45 (.057) 1.5 (.059) 1.4 (.055) 1.45 (.057) 1.5 (.059) 1.4 (.055) 1.45 (.057) 1.5 (.059) j 0.1 (.004) 0.15 (.006) 0.2 (.008) 0.1 (.004) 0.15 (.006) 0.2 (.008) 0.1 (.004) 0.15 (.006) 0.2 (.008) k 0.25 (.010) 0.3 (.012) 0.35 (.014) 0.25 (.010) 0.3 (.012) 0.35 (.014) 0.25 (.010) 0.3 (.012) 0.35 (.014) m 0.55 (.022) 0.6 (.024) 0.65 (.026) 0.55 (.022) 0.6 (.024) 0.65 (.026) 0.55 (.022) 0.6 (.024) 0.65 (.026) n 0.2 (.008) 0.25 (.010) 0.3 (.012) 0.2 (.008) 0.25 (.010) 0.3 (.012) 0.2 (.008) 0.25 (.010) 0.3 (.012) 4 6 5 3 1 2 ff j n n h m kk e j g g h dim. tcs-dl004-250-wh TCS-DL004-500-WH tcs-dl004-750-wh a 0.80 (.031) 0.80 (.031) 0.80 (.031) b 0.25 (.010) 0.25 (.010) 0.25 (.010) c 0.30 (.012) 0.30 (.012) 0.30 (.012) d 1.1 (.043) 2.1 (.083) 3.1 (.122) e 1.45 (.057) 1.45 (.057) 1.45 (.057) f 0.30 (.012) 0.30 (.012) 0.30 (.012) pcb mounting pads pcb mounting pads solder stencil openings device body outline
tcs-dl series - tcs ? dual transient current suppressors how to order tcs - dl 004 - 500 - wh tcs product series dl = dual series impulse voltage rating 004 = 40 v minimum trigger current 250 = 250 ma 500 = 500 ma 750 = 750 ma hold to trip ratio suf x w = 2:1 maximum to minimum trigger current ratio package suf x h = dfn package speci cations are subject to change without notice. customers should verify actual device performance in their speci c applications. typical part marking marking no. d042 = tcs-dl004-250-wh d045 = TCS-DL004-500-WH d047 = tcs-dl004-750-wh pin 1 manufacturing date code* - 1st digit indicates the year? 6-month period. - 2nd digit indicates the week number in the 6-month period. - 3rd & 4th digits indicate specific lot for the week. 6-month period codes: a = jan-jun 2012 d = jul-dec 2013 b = jul-dec 2012 e = jan-jun 2014 c = jan-jun 2013 f = jul-dec 2014 example: arbc - 1st digit ?a? = jan-jun 2012, - 2nd digit ?r? = week 18 (week of april 27), - 3rd & 4th digits ?bc? = lot specific info. re ow pro le pro le feature pb-free assembly average ramp-up rate (tsmax to tp) 3 ?/sec. max. preheat - temperature min. (tsmin) - temperature max. (tsmax) - time (tsmin to tsmax) 150 ? 200 ? 60-180 sec. time maintained above: - temperature (tl) - time (tl) 217 ? 60-150 sec. peak/classi cation temperature (tp) 260 ? time within 5 ? of actual peak temp. (tp) 20-40 sec. ramp-down rate 6 ?/sec. max. time 25 ? to peak temperature 8 min. max.
tw min. max. min. max. 0.25 (.010) 0.35 (.014) 11.70 (.461) 12.30 (.484) packaging speci cations b a d c n g (measured at hub) user direction of feed k 0 b 0 p 2 d 1 t r max. 0.20 (.008) d 0 p 0 a 0 p 1 f e w r 0.25 (.010) 0.12 (.005) 0.12 (.005) dimensions: mm (inches) a b c d g min. max. min. max. min. max. min. max. min. max. 326 (12.835) 330 (13.002) 1.5 (.059) 2.5 (.098) 12.8 (.504) 13.5 (.531) 20.2 (.795) 12.4 (.488) 14.4 (.567) na 0 d 0 d 1 e ref. min. max. min. max. min. max. min. max. 100 (3.937) 4.20 (.165) 4.40 (.173) 1.50 (.059) 1.60 (.063) 1.50 (.059) - 1.65 (.065) 1.85 (.073) fk 0 p 0 p 1 p 2 min. max. min. max. min. max. min. max. min. max. 5.45 (.215) 5.55 (.219) 1.00 (.039) 1.20 (.047) 3.90 (.154) 4.10 (.161) 7.90 (.311) 8.10 (.319) 1.95 (.077) 2.05 (.081) quantity: 3000 pieces per reel ?tbu? is a registered trademark of bourns, inc. in the united states and other countries. ?tcs? is a trademark of bourns, inc. ?tisp? is a registered trademark of bourns ltd., a bourns company, in the united states and other countries, except that ?tisp? is a registered trademark of bourns, inc. in china. 08/12 speci? cations are subject to change without notice. customers should verify actual device performance in their speci? c applications. tcs-dl series - tcs ? dual transient current suppressors tcs-dl004- 250-wh tcs-dl004- 500-wh tcs-dl004- 750-wh b 0 min. max. min. max. min. max. 2.70 (.106) 2.90 (.114) 3.70 (.146) 3.90 (.154) 4.70 (.185) 4.90 (.193)
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