protection products 1 www.semtech.com protection products lc04-6 dual low capacitance tvs array for telecom linecard applications ? transient protection for high-speed data lines to bellcore gr-1089 i pp =70a (10/1000 s) bellcore gr 1089 i pp =100a (2/10 s) itu k.20 i pp =100a (5/310 s) iec 61000-4-2 (esd) 15kv (air), 8kv (contact) iec 61000-4-4 (eft) 40a (5/50ns) iec 61000-4-5 (lightning) 100a (8/20 s) ? protects two tip and ring line pairs ? low capacitance for high-speed interfaces ? high surge capability ? low clamping voltage ? solid-state silicon avalanche technology description features circuit diagram schematic & pin configuration revision 08/31/10 applications mechanical characteristics the lc04-6 has been specifically designed to protect sensitive components which are connected to high- speed telecommunications lines from over voltages caused by lightning, electrostatic discharge (esd) , cable discharge events (cde) , and electrical fast transients (eft) . the device is in a jedec so-16 nb package. it is designed to provide metallic surge protection for two tip and ring line pairs. the low capacitance topology means signal integrity is preserved on high-speed lines. the high surge capability (1000w, t p =10/1000 s) makes the lc04-6 suitable for telecommunications systems operating in harsh transient environments. the lc04-6 is designed to meet the lightning surge requirements of bellcore gr-1089 (intra-building) , fcc part 68, itu k.20, and iec 61000-4-5. the features of the lc04-6 are ideal for protecting t1/e1 transceivers in wan applications. so-16 (top view) ? jedec so-16 package ? molding compound flammability rating: ul 94v-0 ? lead finish: matte tin ? marking : part number, date code, logo ? pb-free, halogen free, rohs/weee compliant ? packaging : tube or tape and reel ? t1/e1 line cards ? base stations ? wan equipment ? csu/dsu ? multiplexers ? routers ? isp equipment ? customer premise equipment tip ring pin 1 - 4 pin 13 - 16
2 ? 2010 semtech corp. www.semtech.com protection products lc04-6 absolute maximum rating electrical characteristics g n i t a rl o b m y se u l a vs t i n u t ( r e w o p e s l u p k a e p p ) s 0 0 0 1 / 0 1 =p k p 0 0 0 1s t t a w t ( t n e r r u c e s l u p k a e p p 1 = 0 0 0 1 / 0) si p p 0 7a t ( t n e r r u c e s l u p k a e p p ) s 0 2 / 8 =i p p 0 0 2a t ( t n e r r u c e s l u p k a e p p ) s 0 6 5 / 0 1 =i p p 0 0 1a e r u t a r e p m e t g n i r e d l o s d a e lt l ) . c e s 0 1 ( 0 6 2c e r u t a r e p m e t g n i t a r e p ot j 5 2 1 + o t 5 5 -c e r u t a r e p m e t e g a r o t st g t s 0 5 1 + o t 5 5 -c 6 - 4 0 c l r e t e m a r a pl o b m y ss n o i t i d n o cm u m i n i ml a c i p y tm u m i x a ms t i n u e g a t l o v f f o - d n a t s e s r e v e rv m w r 6v e g a t l o v n w o d k a e r b e s r e v e rv r b i t a m 1 =8 . 6v t n e r r u c e g a k a e l e s r e v e ri r v m w r c 5 2 = t , v 6 = v m w r c 5 2 = t , v 3 = 5 1 2 a a e g a t l o v g n i p m a l cv c i p p , a 0 1 = t p s 0 0 0 1 / 0 1 = 5 . 2 1v e g a t l o v g n i p m a l cv c i p p , a 0 7 = t p s 0 0 0 1 / 0 1 = 5 1v e g a t l o v g n i p m a l cv c i p p , a 0 0 1 = t p s 0 2 / 8 = 0 2v e c n a t i c a p a c n o i t c n u jc j e n i l h c a e v r z h m 1 = f , v 0 = 5 1f p
3 ? 2010 semtech corp. www.semtech.com protection products lc04-6 typical characteristics non-repetitive peak pulse power vs. pulse time power derating curve clamping voltage vs. peak pulse current pulse waveform capacitance vs. reverse voltage 0 2 4 6 8 10 12 14 0 1020304050607080 peak pulse current - i pp (a) clamping voltage - v c (v) waveform parameters: tr = 10s td = 1000s 0 10 20 30 40 50 60 70 80 90 100 110 0 5 10 15 20 25 30 time (s) percent of i pp e -t td = i pp /2 wavefor m paramete r tr = 8s td = 20 s 1 10 100 0.1 1 10 100 1000 pulse duration - t p (s) peak pulse power - p pk (kw) 0 10 20 30 40 50 60 70 80 90 100 110 0 25 50 75 100 125 150 ambient temperature - t a ( o c) % of rated power or i pp 0 2 4 6 8 10 12 14 01234567 reverse voltage - v r (v) capacitance - c j (pf) f=1mhz clamping voltage vs. peak pulse current 0 5 10 15 20 25 0 20 40 60 80 100 120 140 160 180 200 peak pulse current - i pp (a) clamping voltage - v c (v) waveform parameters: tr = 8s td = 20s
4 ? 2010 semtech corp. www.semtech.com protection products lc04-6 figure 1 - connection for differential (line-to-line) protection of two tip/ring line pairs device connection options for protection of two high-speed line pairs the lc04-6 is designed to protect four high-speed data lines (two differential pairs) from transient over-volt- ages which result from lightning and esd. protection of two line pairs is achieved by connecting the device as follows: pins 1-4 are connected to line 1 of the first pair (i.e. tip 1) and pins 13-16 are connected to line 2 of the first pair (i.e. ring 1). pins 5-8 are connected to line 1 of the second pair (i.e. tip 2) and pins 9-12 are connected to line two of the second pair (i.e. ring 2). all pins should be connected for best results. minimize parasitic inductance in the protection circuit path by keeping the trace length between the protected line and the lc04-6 as short as possible. t1/e1 linecard protection a typical t1/e1 linecard protection circuit is shown in figure 2. the lc04-6 is connected between tip and ring on the transmit and receive line pairs. it provides protection to metallic (line-to-line) lightning and esd surges. it is designed to meet the intra-building re- quirements of bellcore gr-1089. this design takes advantage of the isolation of the transformer to suppress common mode surges. the lc04-6 may also be configured to meet metallic surges of fcc part68 when used in conjunction with a 5 (minimum) ptc or line feed resistor (lfr). the ptc (or lfr + fuse) are required to meet the ac power cross requirements, but will also reduce the effective surge current to levels within the capability of the lc04-6 (table 1). to com- plete the protection circuit, the srda05-4 (or srda3.3-4 for 3.3v supplies) is employed as the ic side protection element. this device helps prevent the transceiver from latching up by providing fine clamping of transients that are coupled through the transformer. the versatility of the lc04-6 makes it ideal for use with combination long haul/short haul t1/e1 transceivers. tip 1 tip 2 ring 1 ring 2 applications information matte tin lead finish matte tin has become the industry standard lead-free replacement for snpb lead finishes. a matte tin finish is composed of 100% tin solder with large grains. since the solder volume on the leads is small com- pared to the solder paste volume that is placed on the land pattern of the pcb, the reflow profile will be determined by the requirements of the solder paste. therefore, these devices are compatible with both lead-free and snpb assembly techniques. in addition, unlike other lead-free compositions, matte tin does not have any added alloys that can cause degradation of the solder joint.
5 ? 2010 semtech corp. www.semtech.com protection products lc04-6 typical applications figure 2 - t1/e1 line card protection table 1 y t i n u m m i d r a d n a t s n e p o k a e p e g r u s t i u c r i c e g a t l o v ) v ( t n e r r u c m r o f e v a w ) s ( t r o h s k a e p t i u c r i c e g r u s t n e r r u c ) a ( e g r u s r o t a r e n e g e c r u o s e c n a t s i s e r (w) e c r u o s l a t o t e c n a t s i s e r r o c t p w 5 h t i w ( ) c f l (w) e v i t c e f f e t r o h s t i u c r i s t n e r r u c ) a ( 9 8 0 1 - r g e r o c l l e b g n i d l i u b - a r t n i 0 0 80 1 / 20 0 18 3 15 . 1 6 8 6 t r a p c c f 0 0 5 10 6 1 / 0 10 0 25 . 75 . 2 10 2 1
6 ? 2010 semtech corp. www.semtech.com protection products lc04-6 outline drawing - so-16 land pattern - so-16 bxn 2x n/2 tips seating aaa c e/2 2x 3 a d a1 e1 bbb c a-b d ccc c a2 plane n 12 see detail a side view a e b e/2 d c 0.25 detail a c l (l1) 01 gage plane h h h 3. dimensions "e1" and "d" do not include mold flash, protrusions or gate burrs. -b- controlling dimensions are in millimeters (angles in degrees). datums and to be determined at datum plane notes: 1. 2. -a- -h- reference jedec std ms-012, variation ac. 4. .050 bsc .236 bsc 16 .010 .150 .386 .154 .390 .012 - 16 0.25 1.27 bsc 6.00 bsc 3.90 9.90 - .157 .394 3.80 9.80 .020 0.31 4.00 10.00 0.51 (.041) .004 .008 - .028 - - - - 0 .016 .007 .049 .004 .053 8 0 0.20 0.10 - 8 0.40 0.17 1.25 0.10 .041 .010 .069 .065 .010 1.35 (1.04) 0.72 - 1.04 0.25 - - - 1.75 1.65 0.25 0.25 - .010 .020 0.50 - a2 a1 d e1 dim n 01 ccc aaa bbb l1 min millimeters dimensions e l h e b c nom inches min a max max nom e this land pattern is for reference purposes only. consult your manufacturing group to ensure your company's manufacturing guidelines are met. notes: 1. reference ipc-sm-782a, rlp no. 304a. 2. .291 .087 .024 .118 (.205) inches dimensions z p y x dim c g millimeters .050 (5.20) 7.40 2.20 0.60 3.00 1.27 z g y p (c) x
7 ? 2010 semtech corp. www.semtech.com protection products lc04-6 contact information semtech corporation protection products division 200 flynn rd., camarillo, ca 93012 phone: (805)498-2111 fax (805)498-3804 ordering information r e b m u n t r a ph s i n i f d a e l r e p y t q l e e r e z i s l e e r t b t . 6 - 4 0 c le e r f b p0 0 5h c n i 7 t . 6 - 4 0 c le e r f b pe b u t / 8 4a / n note: yyww = date code marking diagram 1 sc lc04-6 yyww phil
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