elektronische bauelemente KS33J4 voltage: 3.3 v 40 w transient voltage suppressor diode 24-aug-2008 rev. b page 1 of 2 http://www.secosgmbh.com/ any changes of specification will not be informed individually. b l f h c j d g k a e description ? designed to protect voltage sensitive components from esd ? excellent clamping capability, low leakage and fast response ? cellular phones, mp3 player s, digital cameras ... etc. ? suitable for electronics where board space is a major design consideration features ? response time is typically < 1 ns ? low leakage ? stand-off voltage:3.3 v ? esd rating of class 3 (> 15 kv) per human body model ? iec61000-4-2 level 4 esd protection marking code 33j4 absolute maximum ratings (t a = 25c unless otherwise specified) symbol parameter value units air discharge 15 v esd iec61000-4-2 (esd) contact discharge 8 kv p d total power dissipation on fr-5 board (note 2) 385 mw t l lead solder temperature - max. (10 sec duration) 260 c r ja thermal resistance junction-to-ambient 325 c / w t j , t stg junction and storage temperature range -55 ~ +150 c stresses exceeding "maximum ratings" may damage the device. "maxim um ratings" are stress ratings only; functional operation abo ve the recommended. operating conditions is not implied. extended ex posure to stresses above the recommended operating conditions may affect device reliability. 1. fr-5 = 1.0 x 0.75 x 0.62 in. 2. only 1 diode under power. for all 4 diodes under power, p d will be 25%, mounted on fr-4 board with min pad. electrical characteristics (t = 25c unless otherwise specified) type number symbol min. typ. max. unit test conditions reverse stand-off voltage v rwm - - 3.3 v reverse leakage current i r - - 250 na v rwm = 3.3 v peak pulse current i pp - - 3.5 a clamping voltage 1 v c - - 9.0 v i pp = 1 a clamping voltage 2 v c - - 12.0 v i pp = 3.5 a reverse breakdown voltage v br 5.3 - 5.9 v i t = 1 ma, t amb = 25 c test current i t - 1.0 - ma junction capacitance c - 30 40 pf peak power dissipation p pk - - 40 w (@8x20 s, @ t a < & = 25 c; non-repetitive current per figure 1.) rohs compliant product a suffix of ?-c? specifies halogen & lead-free millimete r millimete r ref. min. max. ref. min. max. a 2.00 2.20 g 0.100 ref. b 2.15 2.45 h 0.525 ref. c 1.15 1.35 j 0.08 0.15 d 0.90 1.10 k 8 e 1.20 1.40 l 0.650 typ. f 0.15 0.35 sot-353
elektronische bauelemente KS33J4 voltage: 3.3 v 40 w transient voltage suppressor diode 24-aug-2008 rev. b page 2 of 2 http://www.secosgmbh.com/ any changes of specification will not be informed individually. ratings and characteristics curves clamping voltage vs. peak pulse current pulse waveform 0 5 10 15 01 2 3 4 5 6 peak pulse current-ipp(a) clamping voltage- vc(v) waveform parameters tr = 8 s s td = 20 0 10 20 30 40 50 60 70 80 90 100 110 0 5 10 15 20 25 30 time ( s) percent of ipp e -t td = i pp /2 waveform parameters tr = 8s td = 20s application note the KS33J4 is designed for the uni-direction of up to four lines from the damage caused by electronic discharge (esd) and surge pulses. the KS33J4 may be used on line where the signal polarities are above or below ground.KS33J4 can with stand and provides protection from a surge of 40 watts peak pulse power per line for a 8/20 s waveform. high speed data line typical application for uni-directional protection of four lines.
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