dual transil array for esd protection general description the lesdaxxxlt1g is a dual monolithic voltage suppressor designed to protect components which are connected to data and transmission lines against esd. it clamps the voltage just above the logic level supply for positive transients, and to a diode drop below ground for negative transients. it can also work as bidirectionnal suppressor by connecting only pin1 and 2. applications z computers z printers z communication systems it is particulary recommended for the rs232 i/o port protection where the line interface withstands only with 2kv esd surges. absolute ratings (t amb =25 c ) symbol parameter value units p pp peak pulse power (t p = 8/20 s) 300 w t l maximum lead temperature for soldering during 10s 260 c t stg storage temperature range -55 to +15 c t op operating temperature range -40 to +125 c t j maximum junction temperature 150 c electrostatic discharge 25 mil std 883c -method 3015-6 iec61000-4-2 air discharge v pp 16 iec61000-4-2 contact discharge 9 kv features z 2 unidirectional transil functions z low leakage current: i r max< 20 a at vbr z 3 00w peak pulse power(8/20 s) z high esd protection level: up to 25 kv benefits z high esd protection level z up to 25 kv. high integration. z suitable for high density boards. complies with the following standards iec61000-4-2 level 4 mil std 883c - method 3015-6 class 3 (human body model) 1 3 2 lesdaxxxlt1g sot? 23 leshan radio company, ltd. 1/5
electrical parameter symbol parameter v rm stand-off voltage v br breakdown voltage v cl clamping voltage i rm leakage current i pp peak pulse current t voltage temperature coefficient v f forward voltage drop c capacitance r d dynamic resistance electrical characteristics v br v f r d t c min. max. i r v rm i rm max. i f typ. (1) max. (2) typ. 0v bias part numbers v v ma v a v ma m 10 -4 /c pf 5.3 5.9 1 3 2 1.25 200 280 5 220 6.1 7.2 1 5.25 20 1.25 200 350 6 140 14.2 15.8 1 12 5 1.25 200 650 10 90 25 30 1 24 1 1.2 10 1000 10 50 1. square pulse i pp =15a,t p =2.5 s 2.v br =at * (t amb -25 c)*v br ( 25 c) fig1.peak power dissipation versus fig2. peak pulse power versus exponential initial junction temperature pulse duration(t j initial=25c) LESDA5V3LT1G lesda6v1lt1g lesda14v2lt1g lesda25lt1g typical characteristics leshan radio company, ltd. lesdaxxxlt1g 2/5
fig3. clamping voltage versus peak fig4. capacitance versus reverse pulse current(t j initial=25c, applied voltage rectangular waveform,t p =2.5 s) fig5.relative variation of leakage current fig6. peak forward voltage drop versus versus junction temperature peak forward current application note electrostatic discharge (esd) is a major cause of failure in electronic systems. transient voltage suppressors (tvs) are an ideal choice for esd protecti on. they are capable of clamping the incoming transient to a low enough level such that damage to the protected semiconductor is prevented. surface mount tvs arrays offer the best choice for minimal lead inductance. they serve as parallel protection elements, connected between the signal line to ground. as the transient rises above the operating voltage of the device, the tvs array becomes a low impedance path diverting the transient current to ground. the esdaxxl array is the ideal board evel prot ection of esd sensitive semiconductor components. the tiny sot23 package allows design flexibility in the design of high density boards where the space saving is at a premium. this enables to shorten the routing and contributes to hardening againt esd. leshan radio company, ltd. lesdaxxxlt1g 3/5
leshan radio company, ltd. lesdaxxxlt1g 4/5
notes: 1. dimensioning and tolerancing per ansi y14.5m,1982 2. controlling dimension: inch. inches millimeters dim min max min max a 0.1102 0.1197 2.80 3.04 b 0.0472 0.0551 1.20 1.40 c 0.0350 0.0440 0.89 1.11 d 0.0150 0.0200 0.37 0.50 g 0.0701 0.0807 1.78 2.04 h 0.0005 0.0040 0.013 0.100 j 0.0034 0.0070 0.085 0.177 k 0.0140 0.0285 0.35 0.69 l 0.0350 0.0401 0.89 1.02 s 0.0830 0.1039 2.10 2.64 v 0.0177 0.0236 0.45 0.60 sot - 23 d j k l a c b s h g v 12 3 mm inches 0.037 0.95 0.037 0.95 0.079 2.0 0.035 0.9 0.031 0.8 leshan radio company, ltd. 5/5 lesdaxxxlt1g
reel dimensions metric dimensions govern ?? english are in parentheses for reference only embossed tape and reel data for discretes a t max outside dimension measured at edge g inside dimension measured near hub 20.2mm min (.795??) 1.5mm min (.06??) 13.0mm 0.5mm (.512 .002??) 50mm min (1.969??) full radius size a max g t max 8 mm 330mm (12.992??) 8.4mm+1.5mm, -0.0 (.33??+.059??, -0.00) 14.4mm (.56??) leshan radio comp any , ltd. storage conditions temperature: 5 to 40 deg.c (20 to 30 deg. c is preferred) humidity: 30 to 80 rh (40 to 60 is preferred ) recommended period: one year after manufacturing (this recommended period is for the soldering condition only. the characteristics and reliabilities of the products are not restricted to this limitation)
shi p ment s p ecification 10 reel 12 inner box/carton 360kpcs/carton dim(unit:mm) dim(unit:mm) 10reel/inner box 30kpcs/inner box label cpn label label label ????? leshan radi o com p an y, ltd. mark 195mm*195mm*150mm 460mm*400mm*420mm 8000pcs/reel (sot-723,sod-723) 3000pcs/reel 80kpcs/inner box (sot-723,sod-723) 960kpcs/carton (sot-723,sod-723) leshan radio comp any , ltd.
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