unit: mm sod-323 1.7 +0.1 -0.1 2.6 +0.1 -0.1 1 . 3 + 0 . 1 - 0 . 1 0 . 1 + 0 . 0 5 - 0 . 0 2 0.475 0.375 0 . 3 + 0 . 0 5 - 0 . 0 5 0.85 +0.05 -0.05 1.0max features pl anar die construct ion ultra-sm all s urface mount pack age ideally s uited for a utom ated as sem bly process es absolute m axim um ratings t a = 25 param eter sym bol rating unit pow er dissi pation (note 1) p d 200 m w forw ard voltage @ i f = 10m a v f 0.9 v thermal resist ance, j unction t o am bient air (note 1) r ja 625 /w opera ting and st orag e tem pera ture rang e t j , t stg -65 to +150 note: 1.p art m ounted on fr- 4 pc board w ith recom m ende d pad layo ut. mm3 z18vs ele ctr ical characteristics @ta=25 unless otherw ise s pecified i zt z zt @ i zt z zk @ i zk i zk min (v) nom (v) ma x (v) m a m a a v min ma x mm 3z18vs 16.8 18 19.1 5 45 80 0.5 0.05 12.6 12.4 16 notes: 2. s hort dura tion t est pulse used t o m inim ize self-heating effec t. 3. f = 1khz. i r @ v r ma x im um reve rse cur rent (no te 2) typical tem pera ture coefficient @ i zt m v/ vz @ i zt type num ber zener volt age ra nge (no te 2) ma x im um zenerim peda nce (no te 3) mark ing mar king 2j product specification sales@twtysemi.com 1 of 3 http://www.twtysemi.com 4008-318-123
d typical characteristics 8 0 v z , n o m i n a l z e n e r v o l t a g e 1 0 3 . 0 z z t , d y n a m i c i m p e d a n c e ( ) w 1 0 0 0 1 0 0 1 0 1 . 0 t j = 2 5 c i z ( a c ) = 0 . 1 i z ( d c ) f = 1 k h z i z = 1 m a 5 m a v f , f o r w a r d v o l t a g e ( v ) 1 . 2 1 . 1 1 . 0 0 . 9 0 . 8 0 . 7 0 . 6 0 . 5 0 . 4 i f , f o r w a r d c u r r e n t ( m a ) 1 0 0 0 1 0 0 1 0 1 . 0 1 5 0 c 7 5 c 2 5 c 0 c c , c a p a c i t a n c e ( p f ) 7 0 v z , n o m i n a l z e n e r v o l t a g e ( v ) 1 0 0 0 1 0 0 1 0 1 . 0 1 0 4 . 0 b i a s a t 5 0 % o f v z n o m t a = 2 5 c 0 v b i a s 1 v b i a s i r , l e a k a g e c u r r e n t ( a ) m v z , n o m i n a l z e n e r v o l t a g e ( v ) 1 0 0 0 1 0 0 1 0 1 . 0 0 . 1 0 . 0 1 0 . 0 0 1 0 . 0 0 0 1 0 . 0 0 0 0 1 7 0 6 0 5 0 4 0 3 0 2 0 1 0 0 + 1 5 0 c + 2 5 c - 5 5 c fig.1 effect of zener voltage on zener impedance fig.2 typical forward voltage fig.3 typical capacitance fig.4 typical leakage current mm3 z18vs product specification sales@twtysemi.com 2 of 3 http://www.twtysemi.com 4008-318-123
power dissipation: ptot (mw) ambient temperature: ta ( c) o derating curve 1 2 v z , z e n e r v o l t a g e ( v ) 1 0 0 1 0 1 . 0 0 . 1 0 . 0 1 1 0 8 . 0 6 . 0 4 . 0 2 . 0 0 t a = 2 5 c i z , z e n e r c u r r e n t ( m a ) v z , z e n e r v o l t a g e ( v ) 1 0 0 1 0 1 0 . 1 0 . 0 1 1 0 3 0 5 0 7 0 9 0 t a = 2 5 c i z , z e n e r c u r r e n t ( m a ) fig.5 zener voltage versus zener current (vz up to 12 v) fig.6 zener voltage versus zener current (12 v to 75 v) fig.7 power dissipation vs ambient temperature mm3 z18vs product specification sales@twtysemi.com 3of 3 http://www.twtysemi.com 4008-318-123
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