protection products 1 www.semtech.com protection products - z-pak tm RCLAMP1821Z ultra small railclamp ? 1-line esd protection description features nominal dimensions schematic revision 1/7/2014 applications mechanical characteristics ? high esd withstand voltage: +/-15kv (contact), +/-18kv (air) per iec 61000-4-2 ? able to withstand over 1000 esd strikes per iec 61000-4-2 level 4 ? ultra-small 020 020 020 020 020 1 pack 1 pack 1 pack 1 pack 1 pack age age age age age ? protects one data or power line ? low reverse current: <5na typical (vr=18v) ? working voltage: +/- 18v ? low capacitance: 0.8pf maximum ? solid-state silicon-avalanche technology ? slp0603p2x3b package ? pb-free, halogen free, rohs/weee compliant ? nominal dimensions: 0.6 x 0.3 x 0.25 mm ? lead finish: niau ? marking : marking code + dot matrix date code ? packaging : tape and reel railclamp ? tvs arrays are ultra low capacitance esd protection devices designed to protect high speed data interfaces. they are designed to replace 0201 size mul- tilayer varistors (mlvs) in portable applications such as cell phones, notebook computers, and other portable electronics. this device offers desirable characteristics for board level protection including fast response time, low operating and clamping voltage, and no device deg- radation. rclamp ? 1821z has a maximum capacitance of only 0.8pf. this allows it to be used on circuits operating in excess of 3ghz without signal attenuation. RCLAMP1821Z is in a 2-pin slp0603p2x3b package. it measures 0.6 x 0.3 mm with a nominal height of only 0.25mm. leads are finished with lead-free niau. each device will protect one line operating at 18 volts. it gives the designer the flexibility to protect single lines in applications where arrays are not practical. the combination of small size and high esd surge capability makes them ideal for use in portable applications such as cellular phones, digital cameras, and mp3 players. ? cellular handsets & accessories ? near field communication (nfc) lines ? rf signal lines ? fm antenna ? digital lines ? usb vbus 0.32 0.62 0.22 0.400 bsc 0.250 1 2 slp0603p2x3b (bottom view)
2 ? 2013 semtech corporation www.semtech.com protection products RCLAMP1821Z absolute maximum rating electrical characteristics (t=25 o c) 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 5 8s t t a w ( t n e r r u c e s l u p k a e p m u m i x a m) s 0 2 / 8 = p ti p p 5 . 2s p m a ) r i a ( 2 - 4 - 0 0 0 1 6 c e i r e p d s e 1 ) t c a t n o c ( 2 - 4 - 0 0 0 1 6 c e i r e p d s e 1 v d s e 8 1 - / + 5 1 - / + 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 notes 1)esd gun return path connected to esd ground reference plane. 2)transmission line pulse test (tlp) settings: t p = 100ns, t r = 0.2ns, i tlp and v tlp averaging window: t 1 = 70ns to t 2 = 90ns. 3) dynamic resistance calculated from i tlp = 4a to i tlp = 16a 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 1 o t 2 r o 2 o t 1 n i p8 1v 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 = 1 o t 2 r o 2 o t 1 n i p 0 22 24 2v 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 8 1 = 1 o t 2 r o 2 o t 1 n i p 50 5a n 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 . 2 = 1 o t 2 r o 2 o t 1 n i p 4 3v e g a t l o v g n i p m a l c d s e 2 v c , a 4 = p p i s n 0 0 1 / 2 . 0 = p l t 0 3v e g a t l o v g n i p m a l c d s e 2 v c , a 6 1 = p p i s n 0 0 1 / 2 . 0 = p l t 8 4v e c n a t s i s e r c i m a n y d 3 , 2 r d s n 0 0 1 = p t5 . 1s m h o 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 6 . 08 . 0f p
3 ? 2013 semtech corporation www.semtech.com protection products RCLAMP1821Z non-repetitive peak pulse power vs. pulse time typical characteristics tlp characteristic clamping voltage vs. peak pulse current (tp=8/20us) esd clamping (+8kv contact per iec 61000-4-2) esd clamping (-8kv contact per iec 61000-4-2) junction capacitance vs. reverse voltage 0 5 10 15 20 25 30 35 00.511.522.53 peak pulse current - i pp (a) clamping voltage - v c (v) waveform parameters: tr = 8 s td = 20 s 0.00 0.10 0.20 0.30 0.40 0.50 0.60 0.70 0 5 10 15 20 reverse voltage - v r (v) capacitance - c j (pf) f = 1 mhz 0 5 10 15 20 25 30 0 1020304050607080 tlp voltage (v) tlp current (a) transmission line pulse test (tlp) settings: t p = 100ns, t r = 0.2ns, i tlp and v tlp averaging window: t 1 = 70ns to t 2 = 90ns -170 -150 -130 -110 -90 -70 -50 -30 -10 10 -10 0 10 20 30 40 50 60 70 80 time (ns) voltage (v) measured ? with ? 50 ? ohm ? scope ? input ? impedance, ? 2ghz ? bandwidth. ?? corrected ? for ? 50 ? ohm, ? 40db ? attenuator. ? esd ? gun ? return ? path ? connected ? to ? esd ? ground ? plane 0.01 0.1 1 10 0.1 1 10 100 1000 pulse duration - tp (s) peak pulse power - p pp (kw) dr040 412 -80 t a = 25 o c -10 10 30 50 70 90 110 130 150 170 -10 0 10 20 30 40 50 60 70 80 time (ns) voltage (v) measured with 50 ohm scope input impedance, 2ghz bandwidth. corrected for 50 ohm, 40db attenuator. esd gun return path connected to esd ground plane
4 ? 2013 semtech corporation www.semtech.com protection products RCLAMP1821Z typical characteristics typical insertion loss s21 assembly guidelines the small size of this device means that some care must be taken during the mounting process to insure reliable solder joint. the table below provides semtech's recommended assembly guidelines for mounting this device. the figure at the right details semtech?s recommended aperture based on the below recommendations. note that these are only recommendations and should serve only as a starting point for design since there are many factors that affect the assembly process. the exact manufactur- ing parameters will require some experimentation to get the desired solder application. r e t e m a r a p y l b m e s s an o i t a d n e m m o c e r n g i s e d l i c n e t s r e d l o sd e h s i l o p - o r t c e l e , t u c r e s a l e p a h s e r u t r e p a d e d n u o r h t i w r a l u g n a t c e r s r e n r o c s s e n k c i h t l i c n e t s r e d l o s) " 4 0 0 . 0 ( m m 0 0 1 . 0 e p y t e t s a p r e d l o sr e l l a m s r o e r e h p s e z i s 4 e p y t e l i f o r p w o l f e r r e d l o s0 2 0 - d t s - j c e d e j r e p n g i s e d d a p r e d l o s b c pd e n i f e d k s a m r e d l o s - n o n h s i n i f d a p b c pu a i n r o p s o recommended stencil design 1 2 3 4 5 start . 030 mhz 3 stop 000 . 000 000 mhz ch1 s21 log 6 db / ref 0 db 1: - .22370 db 800 mhz 2: - .22970 db 900 mhz 3: - .28610 db 1.8 ghz 4: - .52490 db 2.5 ghz 5: - .45760 db 2.7 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 applications information 0.300 0.370 0.088 stencil opening land pad all dimensions are in mm. land pad. stencil opening component
5 ? 2013 semtech corporation www.semtech.com protection products RCLAMP1821Z outline drawing - slp0603p2x3b land pattern - slp0603p2x3b this land pattern is for reference purposes only. consult your manufacturing group to ensure your notes: 2. company's manufacturing guidelines are met. 1. controlling dimensions are in millimeters (angles in degrees). dim y g c millimeters (0.425) 0.675 0.250 0.175 dimensions z x0.270 y z x g (c) aaa n e l e dim a 0.250 0.18 0.08 2 0.22 0.40 bsc millimeters max 0.340 0.265 dimensions min 0.300 nom 0. 2 35 0.320 0.250 controlling dimensions are in millimeters (angles in degrees ). notes: 1. bottom view b d bbb 0.10 aaa c c seating plane bbb c a b top view a1 0.000 0.010 0.050 bxn 0.355 0.285 0.320 0.605 0.675 0.620 a b e a1 a e/2 e d 2xl
6 ? 2013 semtech corporation www.semtech.com protection products RCLAMP1821Z marking code ordering information carrier tape specification ao ko bo notes: railclamp and rclamp are trademarks of semtech corporation notes: 1)dots represent date code matrix and pin 1 location r e b m u n t r a p r e p y t q l e e r l e e r e z i s t n t . z 1 2 8 1 p m a l c r0 0 0 , 0 1h c n i 7 t 0 a0 b0 k m m 5 0 . 0 - / + 0 4 . 0m m 5 0 . 0 - / + 1 7 . 0m m 5 0 . 0 - / + 9 2 . 0 device orientation in tape note: all dimensions in mm unless otherwise specified pin 1 location (towards sprocket holes) t t t t t
7 ? 2013 semtech corporation www.semtech.com protection products RCLAMP1821Z contact information semtech corporation protection products division 200 flynn rd., camarillo, ca 93012 phone: (805)498-2111 fax (805)498-3804
|
