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  leshan radio company, ltd. esd protection diodes with ultra ? low capacitance the lesd8lh is designed to protect voltage sensitive components that require ultra ? low capacitance from esd and transient voltage events. excellent clamping capability, low capacitance, low leakage, and fast response time, make these parts ideal for esd protection on designs where board space is at a premium. because of its low capacitance, it is suited for use in high frequency designs such as usb high speed and antenna line applications. specification features:? ultra low capacitance 4.5 pf ? low clamping voltage ? small body outline dimensions: (0.61 mm x 0.31 mm) ? low body height: 0.28 mm ? stand ? off voltage: 3.3 v ? low leakage ? response time is typically < 1.0 ns ? iec61000 ? 4 ? 2 level 4 esd protection ? this is a pb ? free device mechanical characteristics:case: void-free, transfer-molded, thermosetting plastic epoxy meets ul 94 v ? 0 lead finish: 100% matte sn (tin) maximum ratings rating symbol value unit iec 61000 ? 4 ? 2 (esd) contact air 25 25 kv total power dissipation on fr ? 5 board (note 1) @ t a = 25 c p d 200 mw storage temperature range t stg ? 55 to +150 c junction temperature range t j ? 55 to +150 c lead solder temperature ? maximum (10 second duration) t l 260 c stresses exceeding maximum ratings may damage the device. maximum ratings are stress ratings only. functional operation above the recommended operating conditions is not implied. extended exposure to stresses above the recommended operating conditions may affect device reliability. 1. fr ? 5 = 1.0 x 0.75 x 0.62 in. rev.o 1/4 ordering information lesd8lh3.3ct5g a3 10000/tape&reel device marking shipping lesd8lh3.3ct5g lesd8lh3.3ct5g transient voltage suppressors 12 sod882 1 2
leshan radio company, ltd. electrical characteristics (t a = 25 c unless otherwise noted) 2. v br is measured with a pulse test current i t at an ambient temperature of 25 c. 3. surge current waveform per figure 4. figure 1. esd clamping voltage screenshot positive 8 kv contact per iec61000 ? 4 ? 2 figure 2. esd clamping voltage screenshot negative 8 kv contact per iec61000 ? 4 ? 2 rev.o 2/4 lesd8lh3.3ct5g electrical characteristics (t a = 25 c unless otherwise noted) symbol parameter i pp maximum reverse peak pulse current v c clamping voltage @ i pp v rwm reverse stand-off voltage i r maximum reverse leakage current @ v rwm v br breakdown voltage @ i t i t test current v trig reverse trigger voltage i trig reverse trigger current bi ? directional tvs v i i pp i pp trig v c v br v v rwm i r i t trig i i r i t trig i trig v c v br v v rwm device v br (v) @ i t (note 2) i t c (pf) v c (v) @ i pp = 1 a (note 3) max min ma min lesd8lh3.3ct5g 3.3 3.8 1.0 5.5 v rwm (v) i r (  a) @ v rwm max 0.5 v c (v) @ i pp (note 3) max p pk (w) max 40 (note 3) max max 6.5 v r =0v,f=1mhz typ max 2 4.5 6 = 5 a 8.5
leshan radio company, ltd. iec 61000 ? 4 ? 2 spec. level test voltage (kv) first peak current (a) current at 30 ns (a) current at 60 ns (a) 1 2 7.5 4 2 2 4 15 8 4 3 6 22.5 12 6 4 8 30 16 8 i peak 90% 10% 100% i @ 30 ns i @ 60 ns t p = 0.7 ns to 1 ns figure 3. iec61000 ? 4 ? 2 spec figure 4. 8 x 20  s pulse waveform 100 9080 70 60 50 40 30 20 10 0 02 04 06 08 0 t, time (  s) % of peak pulse current t p t r pulse width (t p ) is defined as that point where the peak current decay = 8  s peak value i rsm @ 8  s half value i rsm /2 @ 20  s rev.o 3/4 lesd8lh3.3ct5g iec 61000 ? 4 ? 2 waveform.
leshan radio company, ltd. rev.o 4/4 lesd8lh3.3ct5g sod882 unit:mm dimension outline:


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