general description the SESD9D5C is designed to protect voltage sensitive components fro m 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. because of its small size, it is suited for use in cellular phones, mp3 players, digital cameras and many other portable applications 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 peak power up to 150 watts @ 8 x 20 s pulse z low leakage current 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-923 absolute ratings (t amb =25c ) symbol parameter value units p pp peak pulse power (t p = 8/20 s) 150 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 z willas electronic corp. 2012-09 transient voltage suppressors for esd protection SESD9D5C
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 ot herwise specified.vf = 0.9v at if = 10ma v br c min. typ. max. i r v rwm i r typ. 0v bias part numbers v v v ma v a pf SESD9D5C 5.6 6.7 7.8 1 5.0 1 11 *surge current waveform per figure 1. 1. v br is measured with a pulse test current i t at an ambient temperature of 25 ? fig1. pulse waveform fig2. power derating curve willas electronic corp. 2012-09 transient voltage suppressors for esd protection SESD9D5C
application note electrostatic discharge (esd) is a major cause of failure in electronic systems. transient voltage suppressors (tvs) are an ideal choice for esd protection. 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 paral lel 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 im pedance path diverting the transien t current to ground. the SESD9D5C is the ideal board evel protection of esd sensitive semiconductor components. the tiny sod-923 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 . sod-923 mechanical data willas electronic corp. 2012-09 transient voltage suppressors for esd protection SESD9D5C type number marking code 6 esd ' & & marking . 0 3 0 ( 0 . 7 5 ) . 0 3 3 ( 0 . 8 5 ) .006(0.15) .010(0.25) .022(0.55) .026(0.65) .013(0.34) .017(0.43) .037(0.95) .041(1.05) .003(0.07) .007(0.17) d i m e n s i o n s i n i n c h e s a n d ( m i l l i m e t e r s )
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