general description the sesd5z series are des igned 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 cameras z power supplies features z small body outline dimensions z low body height z stand ? off vol tage: 3 v ? 12.0 v z peak po wer up to 200 watts @ 8 x 20 s pulse z low leakage z response time is typically < 1 ns 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-523 absolute ratings (t amb =25c ) symbol parameter value units p pp peak pulse power (t p = 8/20 s) 200 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 iec61000-4-2 (esd) air discharge contact discharge 15 8 kv iec61000-4-4 (eft) 40 a esd voltage per human body model per machine model 25 400 kv v willas electronic corp. 2012-09 transient voltage suppressors for esd protection SESD5ZXXV z
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 i f forward current v f forward voltage @ i f electrical characteristics ratings at 25c ambient temperature unless ot herwise specified.vf = 0.9v at if = 10ma v br v f c min. typ. max. i t v rwm i r max. i f typ. 0v bias part numbers v v v ma v a v ma pf sesd5z3v3 5.0 6.0 7.0 1 3.0 1 1.25 200 35 sesd5z5v 6.0 6.6 7.1 1 5.0 1 1.25 200 30 sesd5z7v 7.5 8.1 8.6 1 7.0 1 1.25 200 25 sesd5z12v 13.5 14.2 15.0 1 12.0 1 1.25 200 25 *surge current waveform per figure 1. 1. v br is measured with a pulse test current i t at an ambient temperature of 25 ? typical characteristics fig1. pulse waveform fig2.power derating curve willas electronic corp. 2012-09 transient voltage suppressors for esd protection SESD5ZXXV
application note electrostatic discharge (esd) is a major cause of failure in electronic systems. transient voltage suppressors (tvs) are an ideal choice for esd protec tion. 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 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 becomes a low impedance path diverting the transient current to ground. the sesd5z series is the ideal board evel protection of esd sensitive semiconductor components. the tiny sod-523 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 against esd . willas electronic corp. 2012-09 transient voltage suppressors for esd protection SESD5ZXXV sod-523 mechanical data type number marking code sesd5z3 v 3 ze sesd 5z5 zf marking sesd5z 7v sesd5 z 12v v zh 12v dimensions in inches and (millimeters) .043(1.10) .051(1.30) .035(0.90) .028(0.70) .067(1.70) .059(1.50) .028(0.70) .020(0.50) .014(0.35) .009(0.25) .008(0.20) .002(0.05)
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