1 www.semtech.com rclamp0582b low capacitance tvs for esd and surge protection protection products - railclamp ? ? ? ? ? description features dimensions schematic & pin configuration revision 10/13/2010 railclamp ? tvs diodes are specifically designed to protect sensitive components which are connected to high-speed data and transmission lines from overvolt- age caused by esd (electrostatic discharge), cde (cable discharge events), and eft (electrical fast transients). the rclamp ? 0582b features high peak pulse current capability (ipp=15a, tp=8/20us) for use in applications that require high surge immunity testing. it has a maximum capacitance of only 1.2pf (pin 1 or 2 to pin3). this means it can be used on high-speed inter- faces such as usb 2.0 and lvds data lines. they may be used to meet the esd immunity requirements of iec 61000-4-2 (30kv air, 25kv contact discharge). each device can be configured to protect 1 bidirec- tional line or two unidirectional lines. these devices are in a small sc-75 (sot-523) package and feature a lead-free, matte tin finish. they are com- patible with both lead free and snpb assembly tech- niques. they are designed for use in applications where board space is at a premium. the combination of small size, low capacitance, and high level of surge protection makes them a flexible solution for applications such as set top boxes, displays, and portable electronics. applications mechanical characteristics ? usb 2.0 ? set top box ? mp3 players ? notebook computers ? networking equipment ? transient protection for high-speed data lines to iec 61000-4-2 (esd) 30kv (air), 25kv (contact) iec 61000-4-4 (eft) 40a (5/50ns) ? protects up to two i/o lines ? low capacitance (<1.2pf) ? high surge capability: 15a (tp=8/20us) ? low leakage current and clamping voltage ? low operating voltage: 5.0v ? solid-state silicon-avalanche technology ? sc-75 (sot-523) package ? lead finish: matte tin ? pb-free, halogen free, rohs/weee compliant ? molding compound flammability rating: ul 94v-0 ? packaging: tape and reel sc-75 3l (top view) 12 3 1.60 1.60 1.00 bsc 0.50 bsc 0.75 0.80 nominal dimensions (mm)
2 ? 2010 semtech corp. www.semtech.com protection products rclamp0582b absolute maximum rating electrical characteristics (t=25 o c) 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 3 n i p o t 2 n i p r o 1 n i p5v 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 = 3 n i p o t 2 n i p r o 1 n i p 61 1v 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 5 = 3 n i p o t 2 n i p r o 1 n i p 2 d n a 1 s n i p n e e w t e b d n a 0 0 1 . 0a e g a t l o v g n i p m a l cv c i p p s 0 2 / 8 = p t , a 5 = 3 n i p o t 2 n i p r o 1 n i p 5 1v e g a t l o v g n i p m a l cv c i p p s 0 2 / 8 = p t , a 5 1 = 3 n i p o t 2 n i p r o 1 n i p 0 2v e c n a t i c a p a c n o i t c n u jc j v r z h m 1 = f , v 0 = 2 n i p o t 1 n i p 0 5 . 08 . 0f p e c n a t i c a p a c n o i t c n u jc j v r z h m 1 = f , v 0 = 3 n i p o t 2 n i p r o 1 n i p 2 . 1f p g n i t a rl o b m y se u l a vs t i n u ) s 0 2 / 8 = p t ( r e w o p e s l u p k a e pp k p 0 0 3s t t a w ) s 0 2 / 8 = p t ( t n e r r u c e s l u p k a e pi p p 5 1a ) r i a ( 2 - 4 - 0 0 0 1 6 c e i r e p d s e ) t c a t n o c ( 2 - 4 - 0 0 0 1 6 c e i r e p d s e v d s e 0 3 5 2 v k 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
3 ? 2010 semtech corp. www.semtech.com protection products rclamp0582b typical characteristics non-repetitive peak pulse power vs. pulse time power derating curve 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 normalized capacitance vs. reverse voltage pin 1 or pin 2 to pin 3 0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2 012345 reverse voltage - vr (v) cj(vr)/cj(vr=0v) f = 1 mhz 0 2 4 6 8 10 12 14 16 18 20 0 5 10 15 20 peak pulse current - i pp (a) clamping voltage - v c (v) waveform parameters: tr = 8 s td = 20 s note: data is taken with a 10x attenuator clamping voltage vs. peak pulse current pin 1 or pin 2 to pin 3 esd clamping - pin 1 or pin 2 to pin 3 (8kv contact per iec 61000-4-2) 0.01 0.1 1 10 0.1 1 10 100 1000 pulse duration - tp (us) peak pulse power - p pp (kw) insertion loss s21 (pin 1 or pin 2 to pin 3) 1 2 3 4 5 start . 030 mhz 3 stop 000 . 000 000 mhz ch1 s21 log 6 db / ref 0 db 1: - 0.1601 db 800 mhz 2: - 0.1777 db 900 mhz 3: - 0.5615 db 1.8 ghz 4: - 1.5365 db 2.5 ghz 0 db -6 db -12 db -18 db -24 db -30 db -36 db 1 ghz 100 mhz 3 ghz 10 mhz 1 mhz -42 db -48 db
4 ? 2010 semtech corp. www.semtech.com protection products rclamp0582b device connection options this device is optimized for protection of two high speed dta lines. the device is connected as follows: protection of two lines is achieved by connecting data lines at pins 1 & 2. pin 3 is connected to ground. the connection to ground should be made directly to a ground plane. the path length should also be kept as short as possible to minimize parasitic inductance. 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. figure 1. pin configuration applications information
5 ? 2010 semtech corp. www.semtech.com protection products rclamp0582b outline drawing -sc-75 (sot-523) land pattern -sc-75 (sot-523) -a- -b- 2. -h- bbb .008 0.20 aaa .004 0.10 12 3 plane seating seating plane detail a h c aaa c c 0 c see detail a d e1 e bxn e a1 a2 inches .063 e d b e c .005 .003 .057 a1 dim a min .000 .023 0.30 0.20 1.75 0.15 0.10 1.45 - .039 bsc - .063 .012 .008 .069 1.00 bsc - - 1.60 1.60 millimeters max 0.10 0.90 min dimensions 0.00 max nom - - .004 .035 nom 0.60 - - controlling dimensions are in millimeters (angles in degrees). notes: or gate burrs. dimensions "e1" and "d" do not include mold flash, protrusions 3. 1. 1.70 1.50 .059 .067 e1 .020 bsc 0.50 bsc l (.009) (0.22) a2 .023 .030 0.75 0.60 .031 0.80 e1 .031 0.80 side view a bbb c a b b 0.85 0.75 n3 3 0 - 8 0 8 0 - .033 .029 datums and to be determined at datum plane l a e1 y p 1.00 .039 x y p p1 p1 .020 0.50 notes: 1. this land pattern is for reference purposes only consult your manufacturing group to ensure your company's manufacturing guidelines are met. dim y z g x c millimeters inches (1.40) .031 .087 .016 .024 (.055) 0.80 2.20 0.40 0.60 dimensions z c g
6 ? 2010 semtech corp. www.semtech.com protection products rclamp0582b contact information semtech corporation protection products division 200 flynn rd., camarillo, ca 93012 phone: (805)498-2111 fax (805)498-3804 r e b m u n t r a p d a e l h s i n i f r e p y t q l e e r l e e r e z i s t c t . b 2 8 5 0 p m a l c re e r f b p0 0 0 , 3h c n i 7 ordering information tape and reel specification railclamp and rclamp are registered trademarks of semtech corporation marking device orientation in tape e p a t h t d i w ) x a m ( , bd 1 d ) n i m ( ef k ) x a m ( p0 p2 p) x a m ( tw m m 8 m m 2 . 4 ) 5 6 1 . ( m m 1 . 0 + 5 . 1 m m 0 . 0 - 5 0 0 . + 9 5 . 0 ( ) 0 0 0 . - m m 0 . 1 ) 9 3 0 . ( 0 1 . 0 5 7 . 1 m m ) 4 0 0 . 9 6 0 . ( 5 0 . 0 5 . 3 m m ) 2 0 0 . 8 3 1 . ( m m 4 . 2 ) 4 9 0 . ( 1 . 0 0 . 4 m m - 0 0 . 7 5 1 . ( ) 4 1 . 0 0 . 4 m m - 0 0 . 7 5 1 . ( ) 4 - m 5 0 . 0 0 . 2 m ) 2 0 0 . 9 7 0 . ( m m 4 . 0 ) 6 1 0 . ( m m 3 . 8 ) 2 1 0 . 2 1 3 . ( yw = date code 0 a0 b0 k m m 5 1 . 0 - / + 5 8 . 1m m 5 1 . 0 - / + 5 8 . 1m m 5 1 . 0 - / + 7 8 . 0 yw p 8
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