1 publication order number: ns6a12a/d NS6A12AT3G 600 watt peak power zener transient voltage suppressor unidirectional the NS6A12AT3G is designed to protect voltage sensitive components from high voltage, high energy transients. this device has excellent clamping capability, high surge capability, low zener impedance and fast response time. the NS6A12AT3G is ideally suited for use in computer hard disk drives, communication systems, automotive, numerical controls, process controls, medical equipment, business machines, power supplies, and many other industrial/ consumer applications. specification features: ? peak reverse working voltage of 12 v ? peak pulse power of 600 w (10 x 1000 sec) ? esd rating of class 3 (>16 kv) per human body model ? esd rating of class 4 (>8 kv) iec 61000 ? 4 ? 2 ? fast response time ? low profile package ? this is a pb? free device mechanical characteristics: case: void-free, transfer-molded, thermosetting plastic finish: all external surfaces are corrosion resistant and leads are readily solderable maximum case temperature for soldering purposes: 260 c for 10 seconds leads: modified l? bend providing more contact area to bond pads polarity: cathode indicated by polarity band mounting position: any plastic surface mount zener overvoltage transient suppressor device package shipping ordering information sma case 403d plastic cathode anode marking diagram ns6a12a t3g sma (pb? free) 5000/tape & reel 6lf = specific device code a = assembly location y = year ww = work week = pb? free package 6lf ayww littelfuse .com s pecifications subject to change without notice. ? 2016 littelfuse, inc. s eptember 19, 2016 ? rev. 0
uni? directional tvs i pp i f v i i r i t v rwm v c v br v f NS6A12AT3G maximum ratings rating symbol value unit peak power dissipation (note 1) @ t l = 25 c, pulse width = 1 ms p pk 600 w dc power dissipation @ t l = 75 c measured zero lead length (note 2) derate above 75 c thermal resistance from junction to lead p d r jl 1.5 20 50 w mw/ c c/w dc power dissipation (note 3) @ t a = 25 c derate above 25 c thermal resistance from junction to ambient p d r ja 0.5 4.0 250 w mw/ c c/w operating and storage temperature range t j , t stg ? 65 to +150 c stresses exceeding those listed in the maximum ratings table may damage the device. if any of these limits are exceeded, device functionality should not be assumed, damage may occur and reliability may be affected. 1. 10 x 1000 s, non?repetitive. 2. 1 square copper pad, fr?4 board 3. fr ? 4 board, using littelfuse minimum recommended footprint, as shown in 403d case outline dimensions spec. electrical characteristics (t a = 25 c unless otherwise noted) 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 v br breakdown voltage @ i t i t test current i f forward current v f forward voltage @ i f 4. 1/2 sine wave (or equivalent square wave), pw = 8.3 ms, non? repetitive duty cycle. electrical characteristics device device marking v rwm (note 5) i r @ v rwm breakdown voltage v c @ i pp (note 7) v br (note 6) volts @ i t v c i pp v a min nom max ma v a NS6A12AT3G 6lf 12 0.5 13.3 14.0 14.7 1.0 31 19.5 5. a transient suppressor is normally selected according to the working peak reverse voltage (v rwm ), which should be equal to or greater than the dc or continuous peak operating voltage level. 6. v br measured at pulse test current i t at an ambient temperature of 25 c. 7. surge current waveform per figure 1. 2 publication order number: ns6a12a/d s pecifications subject to change without notice. ? 2016 littelfuse, inc. s eptember 19, 2016 ? rev. 0
NS6A12AT3G v in v l z in load 01 2 34 0 50 100 t, time (ms) value (%) half value - i pp 2 peak value - i pp t r 10 s figure 1. 10 1000 s pulse waveform figure 2. pulse derating curve peak pulse derating in % of peak power or current @ t a = 25 c 100 80 60 40 20 0 0 25 50 75 100 125 150 t a , ambient temperature ( c) 120 140 160 t p pulse width (t p ) is defined as that point where the peak current decays to 50% of i pp . figure 3. typical protection circuit 3 publication order number: ns6a12a/d s pecifications subject to change without notice. ? 2016 littelfuse, inc. s eptember 19, 2016 ? rev. 0
NS6A12AT3G package dimensions dim a min nom max min millimeters 1.97 2.10 2.20 0.078 inches a1 0.05 0.10 0.20 0.002 b 1.27 1.45 1.63 0.050 c 0.15 0.28 0.41 0.006 d 2.29 2.60 2.92 0.090 e 4.06 4.32 4.57 0.160 l 0.76 1.14 1.52 0.030 0.083 0.087 0.004 0.008 0.057 0.064 0.011 0.016 0.103 0.115 0.170 0.180 0.045 0.060 nom max 4.83 5.21 5.59 0.190 0.205 0.220 h e sma case 403d ? 02 issue g e bd l c a a1 notes: 1. dimensioning and tolerancing per ansi y14.5m, 1982. 2. controlling dimension: inch. 3. dimension b shall be measured within dimension l. polarity indicator optional as needed (see styles) 4.000 0.157 2.000 0.079 2.000 0.079 mm inches scale 8:1 soldering footprint h e littelfuse.com 4 publication order number: ns6a12a/d s pecifications subject to change without notice. ? 2016 littelfuse, inc. s eptember 19, 2016 ? rev. 0 litt elfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-s aving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operatio n of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable littelfuse product documentation.? warranties granted by littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicabl e littelfuse documentation.? littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by littelfuse as set forth in applicable littelfuse documentation.? the sale and use of littelfuse p roducts is subject to littelfuse terms and conditions of sale, unless otherwise agreed by littelfuse.
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