elektronische bauelemente szmd 05c 150w , 5 v transient voltage suppressors for esd protection 01-june-2002 rev. a page 1 of 2 http://www.secosgmbh.com/ any changes of specification will not be informed individually. top view a l c b d g h j f k e 1 2 3 1 2 3 features z sot-23 package for surface mount application z protects 5 v components z protects two unidirectional line or one bi-direction line z provides electrically is olated protection applications z cellular handsets and accessories z portable devices z industrial controls z set -top box z servers, notebook, and desktop pc marking code kd b absolute ratings (tamb = 25c ) rating symbol value units iec 61000-4-2 (esd) air contact contact discharge 15 8 kv kv esd voltage per human body model 16 kv total power dissipation on fr-5 board (note 1) @ t a =25 p d 150 m/w junction and storage temperature range t j , t stg -55 ~ +150 c lead solder temperature ? maximum (10 second duration) t l 260 c stresses exceeding maximum ratings may damage the device. maximu m rating are stress ratings only. functional operation above th e recommended operating conditions is not implied. extended exposure to st resses above the recommended operating conditions may affect device reliability. 1. fr-5 = 1.0*0.75*0.62 in. electrical characteristics (ratings at 25c ambient temperature unless otherwise specified. v f = 0.9v at i f = 10ma) v rwm (v) i r (ua) @ v rwm v br (v) @ i t (note 2) i t (ma) v c (v) @ max i pp (note 3) i pp (a) (note 3) p pk (w)* c (pf) (note 4) device max max min ma max max max typ szmd 05 c 5 0.1 6.4 5.0 13.0 14 .0 150 50 other voltages available upon request. 2. v br is measured with a pulse test current i t at an ambient temperature of 25 3. surge current waveform per figure 3. 4. measured at 1mhz 3 v. rohs compliant product a suffix of ?-c? specifies halogen & lead-free sot-23 millimete r millimete r ref. min. max. ref. min. max. a 2.80 3.00 g 0.10 ref. b 2.25 2.55 h 0.55 ref. c 1.20 1.40 j 0.08 0.15 d 0.90 1.15 k 0.5 ref. e 1.80 2.00 l 0.95 typ. f 0.30 0.50 3 2 1
elektronische bauelemente szmd 05c 1 5 0w, 5 v transient voltage suppressors for esd protection 01-june-2002 rev. a page 2 of 2 http://www.secosgmbh.com/ any changes of specification will not be informed individually. ratings and characteristics curves a pplications information device connection options the szmd 05c is designed to protect one bi-directional or two uni-directional data or l/o lines operating at 5 v olts.connection options are as follows: ? bidirectional:pin 1 is connected to the data line and pin 2 is connected to ground (since the device lls symmetrical,these conmtions may be re- ver3ed).for best results,the ground connection should be made directly to a ground plane on the board.the path length should be kept as short as possible to minimize parasitic inductance-pin 3 is not connected. ? unidirectional:data lines are connected to pin1 and pin2.pin 3 is connected to ground.for best results,this pin should be connected directly to a ground plane on the board.the path lengh should be kept as short as possible to minimize parasitic inductance. circuit board layout recommendations for supp ression of esd. good circuit board layout is critical for the suppression of fast rise-time transients such as esd.the following guidelines are recommended (refer to application note sl99.01 for more detailed information): ? place the tvs near the input terminals or conn ectors to restrict transient coupling. ? minimize the path length between the tvs and the protected line. ? minimize all conductive loops including power and ground loops. ? the esd transient return path toground should be kept as short as possible. ? never run critical signals near board edges ? use ground planes whenever possib|e. 0 10 20 30 40 50 60 70 80 90 100 110 0 5 10 15 20 25 30 time (us) percent of i pp e -t td = i pp /2 wave form paramete rs: tr = 8 s td = 20 s pulse waveform 0 10 20 30 40 50 60 70 80 90 10 0 11 0 0 25 50 75 100 125 150 ambient tempe r ature - t a ( o c) % of rated power or i pp power derating curve clamping voltage vs. peak pulse current 0 2 4 6 8 10 12 0 3 6 9 12 15 peak pulse current - i pp (a) clamping voltage - v c (v) waveform parameter s tr = 8s td = 20 s
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