miniature ac varistor __________________________________________________________________________________________ avx introduces miniature ac varistor s for use in automotive applications. mav series devices are an ideal solu tion to transient suppression in lc resonant circuits intended for signal & power transfer. the avx part provides low loss in the resonant circuit yet is able to clamp large amounts of transients in a bidirectional manner. the ability to handle large transients makes the mav series useful in low power ac circuit protection as well. applications including: ac sampling circuitry, transformer se condaries, and gfi modules. mav 002 0 d p miniature ac case capacitance reel size termination varistor size 0 = low d = 7 reel (1k) p = plated sn over 001 = 0603 r = 7 reel (4k) ni barrier 002 = 0405 t = 13 reel (10k) avx part number v w (dc) v w (ac) v b v c i vc i p e t i l cap # of elements mav0010 70 50 120 15% 225 1 2 0.015 10 22pf max 1 mav0020 70 50 120 15% 225 1 3 0.02 10 8pf max 2 v w (dc) dc working voltage [v] i p peak current [a, 8x20s] v w (ac) ac working voltage [v] e t transient energy (j) v b typical breakdown votage [v @ 1ma dc ] i l maximum leakage current at the working voltage [a] v c clamping votage [v @ i vc ] cap maximum capacitance @ 1mhz and 0.5v rms i vc test current for v c [a, 8x20s]
dimensions mav0010 mav0020 in mm l w t bw bl p mav0010 1.60 0.15 0.80 0.15 0.90 max n/a 0.35 0.15 n/a mav0020 1.00 0.15 1.37 0.15 0.66 max 0.36 0.10 0.20 0.10 0.64 ref v/i curve 40 60 80 100 120 140 160 180 200 220 240 1e-09 1e-06 1e-03 1e+00 1e+03 leakage current voltage mav0010 mav0020
transmission characteristic -30 -25 -20 -15 -10 -5 0 1 10 100 1000 10000 frequency (mhz) insertion loss (db) mav0010 mav0020 impact of ac voltag e on leakage current \ 0.3 \ 0.25 \ 0.2 \ 0.15 \ 0.1 \ 0.05 0 0.05 0.1 0.15 0.2 \ 60 \ 40 \ 200 20406080100120140 temperature ? ( ? c) % ? average ? change ? in ? leakage ? current 120 ? v ? peak ? to ? peak 165 ? vol ts ? peak ? to ? peak
10 min 60 min 120 min 10 min 60 min 120 min max 0.3% 0.6% 0.4% 0.3% 0.5% 0.3% min 0.2% 0.2% 0.2% 0.2% 0.1% 0.0% average 0.3% 0.3% 0.3% 0.2% 0.2% 0.2% -10.0% -7.5% -5.0% -2.5% 0.0% 2.5% 5.0% 7.5% 10.0% breakdown voltage parellel 110 v pp @ 125 khhz + vb change - vb change 10 min 60 min 120 min 10 min 60 min 120 min max 0.3% 0.3% 0.3% 0.3% 0.3% 0.3% min 0.2% 0.2% 0.2% -0.2% 0.2% 0.2% average 0.3% 0.3% 0.3% 0.2% 0.3% 0.2% -10.0% -7.5% -5.0% -2.5% 0.0% 2.5% 5.0% 7.5% 10.0% breakdown voltage series 110 v pp @ 125 khhz + vb change - vb change apply 110v pp 125khz sine wave (series) impact of 110v peak to peak si ne wave @ 125khz on breakdown voltage apply 110v pp 125khz sine wave (parallel)
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