1 www.semtech.com RCLAMP2431TQ ultra-low capacitance 1-line esd protection protection products - railclamp ? revision 11/18/2011 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 RCLAMP2431TQ has a typical capacitance of only 0.35pf. this allows it to be used on wi-fi, rfid, and other circuits operating in excess of 3ghz without signal attenuation. it may be used to meet the esd immunity requirements of iec 61000-4-2. the RCLAMP2431TQ is in a 2-pin slp1006p2t package measuring 1.0 x 0.6 x 0.4mm. the leads are spaced at a pitch of 0.65mm and feature a lead-free finish. each device will protect one high-speed line operating up to 24 volts. it gives the designer the flexibility to protect single lines in applications where arrays are not practical. the combination of small size, low capaci- tance, and high esd surge capability makes it ideal for use in portable equipment such as cellular phones and netbooks. the RCLAMP2431TQ is qualified to aec-q100 grade1 for use in automotive environments. ? transient protection for data lines to iec 6 iec 6 iec 6 iec 6 iec 6 1 1 1 1 1 000-4-2 (esd) 000-4-2 (esd) 000-4-2 (esd) 000-4-2 (esd) 000-4-2 (esd) iec 6 iec 6 iec 6 iec 6 iec 6 1 1 1 1 1 000-4-4 (eft) 000-4-4 (eft) 000-4-4 (eft) 000-4-4 (eft) 000-4-4 (eft) ? ultra-small package (1.0 x 0.6 x 0.4mm) ? protects one data line or one i/o pair ? low capacitance: 0.35pf (typical) ? low clamping voltage ? 24v operating voltage ? solid-state silicon-avalanche technology ? qualified to aec-q100 grade1 for automotive description package dimensions features mechanical characteristics applications schematic & pin configuration ? slp1006p2t package ? molding compound flammability rating: ul 94v-0 ? marking: marking code ? packaging : tape and reel ? lead finish: nipdau ? pb-free, halogen free, rohs/weee compliant ? automobile antenna ? can bus ports ? cellular handsets & accessories ? wi-fi interfaces ? felica / rfid ? firewire ? serial ata maximum dimensions (mm) slp1006p2t (bottom view) 0.4 0 0.6 0 0.65 1.0
2 ? 2011 semtech corp. www.semtech.com RCLAMP2431TQ protection products absolute maximum rating absolute maximum ratings electrical characteristics (t=25 o c unless otherwise specified) 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 1s 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 2a ) 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 3 1 - / + 8 - / + 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 0 4 -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 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 4 2v 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 =7 . 6 26 3v 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 v 4 2 = c 5 2 = t50 5 a n c 5 2 1 = t0 0 5 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 1 =5 4v 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 2 =0 5v 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 = c 5 2 = t5 3 . 05 . 0 f p c 5 2 1 = t0 . 1
3 ? 2011 semtech corp. www.semtech.com RCLAMP2431TQ protection products typical characteristics non-repetitive peak pulse power vs. pulse time power derating curve typical clamping voltage vs. peak pulse current typical capacitance vs. reverse voltage esd clamping (8kv contact per iec 61000-4-2) insertion loss s21 0.01 0.1 1 0.1 1 10 100 1000 pulse duration - tp (s) peak pulse power - p pp (kw) 0 20 40 60 80 100 120 0 25 50 75 100 125 150 ambient temperature t a ( o c) % rated power or i pp (%) 0 0.1 0.2 0.3 0.4 0.5 0 5 10 15 20 25 reverse voltage - v r (v) capacitance - c j (pf) t a =25 o c f = 1 mhz 0 50 100 150 200 0 2040608010 0 time (ns) clamping voltage (v) t a = 25 o c. waveform 1ns/60ns; 8kv peak. corrected for 40db attenuation. measured with 50 40db attenuator; 50 scope input impedance. 1 2 3 4 5 start . 030 mhz 3 stop 000 . 000 000 mhz ch1 s21 log 6 db / ref 0 db 1: - 0 . 03500 db 800 mhz 2: -0.02690 db 900 mhz 3: -0.15840 db 1.8 ghz 4: -0.59350 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 0 20 40 60 0.51.01.52.02.5 peak pulse current - i pp (a) clamping voltage -v c (v) t a =25 o c waveform parameters: tr = 8us; td = 20us;
4 ? 2011 semtech corp. www.semtech.com RCLAMP2431TQ protection products typical characteristics typical breakdown voltage v temperature typical junction capacitance v temperature 0.0 0.3 0.6 0.9 1.2 -50 0 50 100 150 temperature ( o c) capacitance (pf) vr = 0 typical reverse leakage current v temperature 0 1 2 3 4 5 -50 0 50 100 150 temperature ( o c) leakage current (na) v r = 24v 26 28 30 32 34 36 -50 0 50 100 150 temperature ( o c) breakdown voltage (v br ) (v) i br = 1ma
5 ? 2011 semtech corp. www.semtech.com RCLAMP2431TQ protection products applications information applications information device connection options these low capacitance tvs diodes are designed to provide common mode protection for one high-speed line or differential protection for one line pair. the device is bidirectional and may be used on lines where the signal polarity is positive and negative. circuit board layout recommendations for suppres- sion of esd. good circuit board layout is critical for the suppression of esd induced transients. the following guidelines are recommended: z place the tvs near the input terminals or connec- tors to restrict transient coupling. z minimize the path length between the tvs and the protected line. z minimize all conductive loops including power and ground loops. z the esd transient return path to ground should be kept as short as possible. z never run critical signals near board edges. z use ground planes whenever possible. equivalent circuit diagram 2 1
6 ? 2011 semtech corp. www.semtech.com RCLAMP2431TQ protection products outline drawing - slp1006p2t land pattern - slp1006p2t bxn e a1 .000 .001 .002 0.00 0.03 0.05 r 2x l pin 1 id r .002 .004 .006 0.05 0.10 0.15 a inches .026 bsc aaa n e l e .008 .020 dim a min .018 .015 0.30 0.70 0.20 0.50 .003 2 .010 .024 .012 .028 0.08 2 0.25 0.60 0.65 bsc millimeters max 0.55 0.43 dimensions min 0.45 nom .016 .020 max .022 .017 nom 0.37 0.50 0.40 controlling dimensions are in millimeters (angles in degrees). notes: 1. bottom view top view a b c b aaa c seating plane bbb c a b d .035 .039 .043 0.90 1.10 1.00 .004 bbb 0.10 d e a1 this land pattern is for reference purposes only. consult your manufacturing group to ensure your n otes: 2. dim y g c millimeters inches (0.85) .055 .012 .022 (.033) 1.40 0.55 0.30 dimensions company's manufacturing guidelines are met. z y (c) g z x .024 0.60 x 1. controlling dimensions are in millimeters (angles in degrees).
7 ? 2011 semtech corp. www.semtech.com RCLAMP2431TQ protection products marking tape and reel specification ordering information notes: 1) marking will also include line matrix date code 2) device is electrically symmetrical 7t note: lead finish is lead-free nipdau. railclamp and rclamp are marks of semtech corporation. r e b m u n t r a p g n i k r o w e g a t l o v r e p y t q l e e r l e e r e z i s t c t . q t 1 3 4 2 p m a l c rv 4 20 0 0 , 3h c n i 7 e p a t h t d i w ) x a m ( , bd1 de f k ) x a m ( p0 p2 p t ) x a m ( w m m 8 m m 2 . 4 ) 5 6 1 . ( 1 . 0 + 5 . 1 0 . 0 - m m 9 5 . 0 ( m m 5 0 0 . + ) 0 0 0 . - m m 8 . 0 5 2 . 0 ) 1 3 0 . ( 1 . 0 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 . ( 0 1 . 0 0 . 4 m m ) 4 0 0 . 7 5 1 . ( m m 1 . 0 0 . 4 ) 4 0 0 . 7 5 1 . ( 5 0 . 0 0 . 2 m m ) 2 0 0 . 9 7 0 . ( m m 4 . 0 ) 6 1 0 . ( m m 0 . 8 m m 3 . 0 + m m 1 . 0 - ) 2 1 0 . 2 1 3 . ( 0 a0 b0 k m m 0 1 . 0 - / + 9 6 . 0m m 0 1 . 0 - / + 9 1 . 1m m 0 1 . 0 - / + 6 6 . 0 device orientation in tape cathode bar location user direction of feed contact information semtech corporation protection products division 200 flynn rd., camarillo, ca 93012 phone: (805)498-2111 fax (805)498-3804
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