general description the SESD3ZXXC is designed to protect voltage sensitive components from esd and transient voltage events. excellent clamping capability, low leakage, and fast response time, make these parts ideal for esd protection on designs where board space is at a premium. applications z cellular phones z portable devices z digital c ame ras z po we r su ppli es features z small body outline dimensions z low body height z peak power up to 350 watts @ 8 x 20 s pulse z low leakage current z response time is typically < 1 ns z esd rating of class 3 (> 16 kv) per human body model complies with the following standards iec61000-4-2 level 4 15 kv (air discharge) 8 kv(contact discharge) mil std 883e - method 3015-7 class 3 25 kv hbm (human body model) functional diagram sod-323 absolute ratings (t amb =25 c) symbol parameter value units p pk peak pulse power (t p = 8/20 s) 350 w t l maximum lead temperature for soldering during 10s 260 c t stg storage temperature range -55 to +155 c t op operating temperature range -40 to +125 c t j maximum junction temperature 150 c willas electronic corp. 2012-09 z transient voltage suppressors for esd protection SESD3ZXXC
electrical parameter symbol parameter i pp maximum reverse peak pulse current v c clamping voltage @ i pp v rwm working peak reverse voltage i r maximum reverse leakage current @ v rwm i t test current v br breakdown voltage @ i t electrical characteristics ratings at 25c ambient temperature unless otherwise specified. v br c min. max. i t v rwm i r typ. note1 typ. part numbers v v v ma v a pf sesd3z5c 5.4 6.7 7.8 1 5.0 1 200 sesd3z12c 13.3 14.5 15.7 1 12.0 1 100 1. capacitance is measured at f=1mhz, v r =0v,t a =25 . typical characteristics fig1. pulse waveform fig2.power derating curve willas electronic corp. 2012-09 transient voltage suppressors for esd protection sesd3zxxv
application note electrostatic discharge (esd) is a major cause of failure in electronic systems. transient voltage suppressors (tvs) are an ideal choice for esd prot ection. 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 offers the best choice for mi nimal lead inductance. they serve as parallel protection elements, connected between the signal lines to ground. as the transient rises above the operating voltage of the device, the tvs becomes a low impedance path diverting the transient current to ground. the SESD3ZXXC is the ideal board evel prot ection of esd sensitive semiconductor components. the tiny sod-323 package allows design flexibilit y in the design of high density boards where the space saving is at a premium. this enables to shorten the routing and cont ributes to hardening against esd. sod-323 mechanical data type number marking code sesd3z5c c c sesd3z12 c 12c marking willas electronic corp. 2012-09 sesd3zxxv .075(1.90) .059(1.50) .091(2.30) .106(2.70) .010(0.25)min. .057(1.45) .045(1.15) .010(0.25) .016(0.40) .008(0.20) .043(1.10) .031(0.80) .004(0.10)max. .010(0.25) .016(0.40) .004(0.10) dimensions in inches and (millimeters)
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