1 glass encapsulated transguard ? general description the glass encapsulated transguard ? multilayer varistors are zinc oxide (zno) based ceramic semiconductor devices with non-linear, bi-directional v-i characteristics. they have the advantage of offering bi-directional overvoltage protection as well as emi/rfi attenuation in a single smt package. these large case size parts extend transguard range into high energy applications. in addition the glass encapsulation provides enhanced resistance against harsh environment or process such as acidic environment, salts or chlorite flux. physical dimensions: mm (inches) size (eia) length (l) width (w) max thickness (t) land length (t) 1210 3.200.20 2.490.20 1.70 0.14 max. (0.1260.008) (0.0980.008) (0.067) (0.045 max.) 1812 4.500.30 3.200.30 2.00 1.00 max. (0.1770.012) (0.1260.012) (0.079) (0.040 max.) 2220 5.700.40 5.000.40 2.50 1.00 max. (0.2240.016) (0.1970.016) (0.098) (0.040 max.) features ? bi-directional protection ? emi/rfi attenuation in off-state ? multi-strike capability ? sub 1ns response to esd strike ? high energy / high current ? glass encapsulated applications ? proffesional / industrial / commercial applications ? ic protection, dc motor protection ? relays, controllers, sensors ? smart grids ? alarms and more ? various applications where glass encapsulation is needed for harsh environment / acid-resistance general characteristics operating temperature: -55oc to 125oc v varistor g glass encapsulate chip 1812 chip size 1210 1812 2220 16 working voltage 16 = 16vdc 22 = 22vdc 38 = 38vdc 65 = 65vdc p engergy rating s = 2.0j p = 2.7-3.0j u = 4.0-5.0j y = 7.2-12j 400 clamping voltage 400 = 42v 440 = 44v 770 = 77v 131 = 135v r package d = 7" reel r = 7" reel t = 13" reel p termination p = ni/sn plated how to order
2 glass encapsulated transguard ? v w (dc) dc working voltage [v] v w (ac) ac working voltage [v] v b typical breakdown votage [v @ 1ma dc , 25c] v c clamping voltage [v @ i ivc ] i vc test current for v c [a, 8x20s] i l maximum leakage current at the working voltage, 25c [a] e t transient energy rating [j, 10x1000s] i p peak current rating [a, 8x20s] cap typical capacitance [pf] @ frequency specified and 0.5v rms , 25c, m = 1mhz, k = 1khz avx pn v w (dc) v w (ac) v b v c i vc i l e t i p cap freq vg181216p400 16 11 24.510% 42 5 10 2.9 1000 5000 k VG222016Y400 16 11 24.510% 42 10 10 7.2 1500 13000 k vg121022r440 22 17 2710% 44 2.5 10 1.7 400 1600 k vg121038s770 38 30 47.010% 77 2.5 15 2 400 1000 k vg181238u770 38 30 47.010% 77 5 15 4.2 800 1300 k vg222038y770 38 30 47.010% 77 10 15 12 2000 4200 k vg121065p131 65 50 82.010% 135 2.5 15 2.7 350 600 k electrial characteristics
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