1 t ransguard a vx multilayer ceramic transient voltage suppressors general description the avx transguard t ransient voltage suppressors (tvs) with unique high-energy multilayer construction represents state-of-the-art overvoltage circuit protection. monolithic multilayer construction provides protection from voltage transients caused by esd, lightning, nemp, inductive switch- ing, etc. true surface mount product is provided in eia industry standard packages. thru-hole components are supplied as conformally coated axial devices. transguard description tr ansguard products are zinc oxide (zno) based ceramic semiconductor devices with non-linear voltage-current charac- teristics (bi-directional) similar to back-to-back zener diodes. they have the added advantage of greater current and energy handling capabilities as well as emi/rfi attenuation. devices are fabricated by a ceramic sintering process that yields a structure of conductive zno grains surrounded by electrically insulating barriers, creating varistor-like behavior. the number of grain-boundary interfaces between conduct- ing electrodes determines ?reakdown voltage?of the device. high voltage applications such as ac line protection r equire many grains between electrodes while low voltage r equires few grains to establish the appropriate breakdown voltage. single layer ceramic disc processing proved to be a viable production method for thick cross section devices with many grains, but attempts to address low voltage suppression needs by processing single layer ceramic disc formulations with huge grain sites has had limited success. a vx, the world leader in the manufacture of multilayer ceramic capacitors, now offers the low voltage transient protection marketplace a true multilayer, monolithic surface mount varistor. technology leadership in processing thin dielectric materials and patented processes for precise ceramic grain growth have yielded superior energy dissipation in the smallest size. now a varistor has voltage characteristics determined by design and not just cell sorting whatever falls out of the process. multilayer ceramic varistors are manufactured by mixing ceramic powder in an organic binder (slurry) and casting it into thin layers of precision thickness. metal electrodes are deposited onto the green ceramic layers which are then stacked to form a laminated structure. the metal electrodes are arranged so that their terminations alternate from one end of the varistor to the other. the device becomes a monolithic block during the sintering (firing) cycle providing uniform energy dissipation in a small volume.
2 surface mount devices important: for part number identification only, not for construction of part numbers. the information below only defines the numerical value of part number digits, and cannot be used to construct a desired set of electrical limits. please refer to the transguard ? part number data for the correct electri- cal ratings. important: for part number identification only, not for construction of part numbers. the information below only defines the numerical value of part number digits, and cannot be used to construct a desired set of electrical limits. please refer to the transguard ? part number data for the correct electri- cal ratings. vc 1206 05 d 150 r p termination finish: p = ni/sn alloy (plated) m = ni/sn pb (plated) p ackaging (pcs/reel): style ? ? ? ? vc0402 n/a n/a n/a 10,000 vc0603 1,000 4,000 10,000 n/a vc0805 1,000 4,000 10,000 n/a vc1206 1,000 4,000 10,000 n/a vc1210 1,000 2,000 10,000 n/a clamping voltage: where: 100 = 12v 500 = 50v 150 = 18v 560 = 60v 200 = 22v 580 = 60v 250 = 27v 620 = 67v 300 = 32v 650 = 67v 390 = 42v 101 = 100v 400 = 42v 121 = 120v energy: where: a = 0.1j j = 1.5j s = 1.9-2.0j b = 0.2j k = 0.6j t = 0.01j c = 0.3j l = 0.8j u = 4.0-5.0j d = 0.4j m = 1.0j v = 0.02j e = 0.5j n = 1.1j w = 6.0j f = 0.7j p = 3.0j x = 0.05j g = 0.9j q = 1.3j y = 12.0j h = 1.2j r = 1.7j z = 25.0j working voltage: where: 03 = 3.3 vdc 18 = 18.0 vdc 05 = 5.6 vdc 26 = 26.0 vdc 09 = 9.0 vdc 30 = 30.0 vdc 12 = 12.0 vdc 48 = 48.0 vdc 14 = 14.0 vdc 60 = 60.0 vdc case size designator: size length width 0402 1.00?.10mm (0.040"?.004") 0.5?.10mm (0.020"?.004") 0603 1.60?.15mm (0.063"?.006") 0.8?.15mm (0.032"?.006") 0805 2.01?.2mm (0.079"?.008") 1.25?.2mm (0.049"?.008") 1206 3.20?.2mm (0.126"?.008") 1.60?.2mm (0.063"?.008") 1210 3.20?.2mm (0.126"?.008") 2.49?.2mm (0.098"?.008") case style: c = chip product designator: v = varistor marking: all standard surface mount transguard chips will not be marked. va 1000 05 d 150 r l lead finish: copper clad steel, solder coated p ackaging (pcs/reel): style ? ? ? v a1000 1,000 3,000 7,500 v a2000 1,000 2,500 5,000 clamping voltage: where: 100 = 12v 580 = 60v 150 = 18v 650 = 67v 300 = 32v 101 = 100v 400 = 42v 121 = 120v energy: where: a = 0.1j d = 0.4j k = 2.0j working voltage: where: 03 = 3.3 vdc 26 = 26.0 vdc 05 = 5.6 vdc 30 = 30.0 vdc 14 = 14.0 vdc 48 = 48.0 vdc 18 = 18.0 vdc 60 = 60.0 vdc case size designator: size length diameter 1000 4.32mm (0.170") 2.54mm (0.100") 2000 4.83mm (0.190") 3.56mm (0.140") case style: a = axial product designator: v = varistor marking: all axial transguards are marked with vendor identification, product identification, voltage/energy rating code and date code (see example below): where: avx = always avx (vendor identification) tvs = always tvs (product identification - transient voltage suppressor) 05d = working vdc and energy rating (joules) where: 05 = 5.6 vdc, d = 0.4j 425 = three digit date code where: 4 = last digit of year (2004) 25 = week of year axial leaded devices pa rt number identification avx tvs 05d 425 t ransguard a vx multilayer ceramic transient voltage suppressors
3 t ransguard a vx multilayer ceramic transient voltage suppressors electrical characteristics av xw orking working breakdown clamping test maximum transient peak typical frequency case part number voltage voltage voltage voltage current leakage energy current cap size (dc) (ac) for v c current rating rating vc060303a100 _ _ 3.3 2.3 5.0?0% 12 1 100 0.1 30 1450 k 0603 vc080503a100 _ _ 3.3 2.3 5.0?0% 12 1 100 0.1 40 1400 k 0805 vc080503c100 _ _ 3.3 2.3 5.0?0% 12 1 100 0.3 120 5000 k 0805 vc120603a100 _ _ 3.3 2.3 5.0?0% 12 1 100 0.1 40 1250 k 1206 vc120603d100 _ _ 3.3 2.3 5.0?0% 12 1 100 0.4 150 4700 k 1206 v a100003a100 _ _ 3.3 2.3 5.0?0% 12 1 100 0.1 40 1500 k 1000 v a100003d100 _ _ 3.3 2.3 5.0?0% 12 1 100 0.4 150 4700 k 1000 vc040205x150 _ _ 5.6 4.0 8.5?0% 18 1 35 0.05 20 175 m 0402 vc060305a150 _ _ 5.6 4.0 8.5?0% 18 1 35 0.1 30 750 k 0603 vc080505a150 _ _ 5.6 4.0 8.5?0% 18 1 35 0.1 40 1100 k 0805 vc080505c150 _ _ 5.6 4.0 8.5?0% 18 1 35 0.3 120 3000 k 0805 vc120605a150 _ _ 5.6 4.0 8.5?0% 18 1 35 0.1 40 1200 k 1206 vc120605d150 _ _ 5.6 4.0 8.5?0% 18 1 35 0.4 150 3000 k 1206 v a100005a150 _ _ 5.6 4.0 8.5?0% 18 1 35 0.1 40 1000 k 1000 v a100005d150 _ _ 5.6 4.0 8.5?0% 18 1 35 0.4 150 2800 k 1000 vc040209x200 _ _ 9.0 6.4 12.7?5% 22 1 25 0.05 20 175 m 0402 vc060309a200 _ _ 9.0 6.4 12.7?5% 22 1 25 0.1 30 550 k 0603 vc080509a200 _ _ 9.0 6.4 12.7?5% 22 1 25 0.1 40 750 k 0805 vc080512a250 _ _ 12.0 8.5 16?5% 27 1 25 0.1 40 525 k 0805 vc040214x300 _ _ 14.0 10.0 18.5?2% 32 1 15 0.05 20 100 m 0402 vc060314a300 _ _ 14.0 10.0 18.5?2% 32 1 15 0.1 30 350 k 0603 vc080514a300 _ _ 14.0 10.0 18.5?2% 32 1 15 0.1 40 325 k 0805 vc080514c300 _ _ 14.0 10.0 18.5?2% 32 1 15 0.3 120 900 k 0805 vc120614a300 _ _ 14.0 10.0 18.5?2% 32 1 15 0.1 40 600 k 1206 vc120614d300 _ _ 14.0 10.0 18.5?2% 32 1 15 0.4 150 1050 k 1206 v a100014a300 _ _ 14.0 10.0 18.5?2% 32 1 15 0.1 40 325 k 1000 v a100014d300 _ _ 14.0 10.0 18.5?2% 32 1 15 0.4 150 1100 k 1000 vc13ma0160kba 16.0 14.0 24.5?0% 40 2.5 25 1.6 400 1800 k 1210 vc040218x400 _ _ 18.0 13.0 25.5?0% 42 1 10 0.05 20 65 m 0402 vc060318a400 _ _ 18.0 13.0 25.5?0% 42 1 10 0.1 30 150 k 0603 vc080518a400 _ _ 18.0 13.0 25.5?0% 42 1 10 0.1 30 225 k 0805 vc080518c400 _ _ 18.0 13.0 25.5?0% 42 1 10 0.3 100 550 k 0805 vc120618a400 _ _ 18.0 13.0 25.5?0% 42 1 10 0.1 30 350 k 1206 vc120618d400 _ _ 18.0 13.0 25.5?0% 42 1 10 0.4 150 900 k 1206 vc120618e380 _ _ 18.0 13.0 22.0?0% 38 1 15 0.5 200 800 k 1206 vc121018j390 _ _ 18.0 13.0 25.5?0% 42 5 10 1.5 500 3100 k 1210 vj13mc0180kba 18.0 13.0 24.0?0% 45 10 25 1.5 500 3000 k 1210 v a100018a400 _ _ 18.0 13.0 25.5?0% 42 1 10 0.1 40 350 k 1000 te rmination/lead finish code packaging code
te rmination/lead finish code packaging code v w (dc) dc working voltage (v) v w (ac) ac working voltage (v) v b t ypical breakdown voltage (v @ 1ma dc ) v b to l v b t olerance is from typical value v c clamping voltage (v @ i vc ) i vc t est current for v c (a, 8x20?) i l maximum leakage current at the working voltage (?) e t t ransient energy rating (j, 10x1000?) i p peak current rating (a, 8x20?) cap typical capacitance (pf) @ frequency specified and 0.5 v rms freq frequency at which capacitance is measured (k = 1khz, m = 1mhz) 4 t ransguard a vx multilayer ceramic transient voltage suppressors electrical characteristics av xw orking working breakdown clamping test maximum transient peak typical frequency case part number voltage voltage voltage voltage current leakage energy current cap size (dc) (ac) for v c current rating rating v a100018d400 _ _ 18.0 13.0 25.5?0% 42 1 10 0.4 150 900 k 1000 vc060326a580 _ _ 26.0 18.0 34.5?0% 60 1 10 0.1 30 155 k 0603 vc080526a580 _ _ 26.0 18.0 34.5?0% 60 1 10 0.1 30 120 k 0805 vc080526c580 _ _ 26.0 18.0 34.5?0% 60 1 10 0.3 100 250 k 0805 vc120626d580 _ _ 26.0 18.0 34.5?0% 60 1 10 0.4 120 500 k 1206 vc120626f540 _ _ 26.0 20.0 33.0?0% 54 1 15 0.7 200 600 k 1206 vc121026h560 _ _ 26.0 18.0 34.5?0% 60 5 10 1.2 300 2150 k 1210 vj13mc0260kba 26.0 18.0 33.0?0% 62 10 25 1.2 300 1120 k 1210 vc181226p540 _ _ 26.0 20.0 33.0?0% 54 5 15 3.0 800 3000 k 1812 v a100026d580 _ _ 26.0 18.0 34.5?0% 60 1 10 0.4 120 650 k 1000 vc060330a650 _ _ 30.0 21.0 41.0?0% 67 1 10 0.1 30 125 k 0603 vc080530a650 _ _ 30.0 21.0 41.0?0% 67 1 10 0.1 30 90 m 0805 vc120630d650 _ _ 30.0 21.0 41.0?0% 67 1 10 0.4 120 400 k 1206 vc121030g620 _ _ 30.0 21.0 41.0?0% 67 5 10 0.9 220 1750 k 1210 vc121030h620 _ _ 30.0 21.0 41.0?0% 67 5 10 1.2 280 1850 k 1210 vj13mc0300kba 30.0 21.0 39.0?0% 73 10 25 0.9 220 1020 k 1210 vj13pc0300kba 30.0 21.0 39.0?0% 73 10 25 1.2 280 1150 k 1210 v a100030d650 _ _ 30.0 21.0 41.0?0% 67 1 10 0.4 120 550 k 1000 vc120631m650 _ _ 31.0 25.0 39.0?0% 65 1 15 1.0 200 500 k 1206 vc120638n770 _ _ 38.0 30.0 47.0?0% 77 1 15 1.1 200 350 k 1206 vc121038s770 _ _ 38.0 30.0 47.0?0% 77 2.5 15 2.0 300 750 k 1210 vc181238u770 _ _ 38.0 30.0 47.0?0% 77 5 15 4.2 800 1700 k 1812 vc120645k900 _ _ 45.0 35.0 56.0?0% 90 1 15 0.6 200 260 k 1206 vc181245u900 _ _ 45.0 35.0 56.0?0% 90 5 15 4.0 500 1200 k 1812 vc120648d101 _ _ 48.0 34.0 62.0?0% 100 1 10 0.4 100 225 k 1206 vc121048g101 _ _ 48.0 34.0 62.0?0% 100 5 10 0.9 220 450 k 1210 vc121048h101 _ _ 48.0 34.0 62.0?0% 100 5 10 1.2 250 500 k 1210 vj13mc0480kba 48.0 34.0 60.5?0% 110 10 25 0.9 220 800 k 1210 vj13pc0480kba 48.0 34.0 60.5?0% 110 10 25 1.2 250 840 k 1210 v a100048d101 _ _ 48.0 34.0 62.0?0% 100 1 10 0.4 100 200 k 1000 vc120656f111 _ _ 56.0 40.0 68.0?0% 110 1 15 0.7 100 180 k 1206 vc181256u111 _ _ 56.0 40.0 68.0?0% 110 5 15 4.8 500 800 k 1812 vc121060j121 _ _ 60.0 42.0 76.0?0% 120 5 10 1.5 250 400 k 1210 vj13mc0600kba 60.0 42.0 75.0?0% 126 10 25 1.5 250 600 k 1210 v a200060k121 _ _ 60.0 42.0 76.0?0% 120 1 10 2.0 300 400 k 2000 vc120665l131 _ _ 65.0 50.0 82.0?0% 135 1 15 0.8 100 120 k 1206
5 dimensions l w t t dimensions: millimeters (inches) d max. 0.51 0.05 (0.020" 0.002") l max. 25.4 (1.0") min. lead length dimensions: mm (inches) a vx style va1000 va2000 (l) max length mm 4.32 4.83 (in.) (0.170) (0.190) (d) max diameter mm 2.54 3.56 (in.) (0.100) (0.140) dimensions: mm (inches) a vx style 0402 0603 0805 1206 1210 1812 2220 (l) length mm 1.00?.10 1.60?.15 2.01?.20 3.20?.20 3.20?.20 4.50?.20 5.70?.20 (in.) (0.040?.004) (0.063?.006) (0.079?.008) (0.126?.008) (0.126?.008) (0.177?.008) (0.224?.008) (w) width mm 0.50?.10 0.80?.15 1.25?.20 1.60?.20 2.49?.20 3.20?.20 5.00?.20 (in.) (0.020?.004) (0.031?.006) (0.049?.008) (0.063?.008) (0.098?.008) (0.126?.008) (0.197?.008) (t) max thickness mm 0.6 0.9 1.02 1.02 1.70 1.70 1.70 (in.) (0.024) (0.035) (0.040) (0.040) (0.067) (0.067) (0.067) (t) land length mm 0.25?.15 0.35?.15 0.71 max. 0.71 max. 0.71 max. 0.50?.25 0.50?.25 (in.) (0.010?.006) (0.014?.006) (0.028 max.) (0.028 max.) (0.028 max.) (0.020?.010) (0.020?.010) lead finish: copper clad steel, solder coated
6 t ransguard a vx multilayer ceramic transient voltage suppressors multilayer construction and improved grain structure result in excellent transient clamping characteristics up to 20 amps peak current, while maintaining very low leakage currents under dc operating conditions. the vi curves below show the voltage/current characteristics for the 5.6v, 9v, 14v, 18v and low capacitance staticguard parts with currents ranging from parts of a micro amp to tens of amps. t raditionally varistors have suffered degradation of electrical performance with repeated high current pulses resulting in decreased breakdown voltage and increased leakage cur- r ent. it has been suggested that irregular intergranular boundaries and bulk material result in restricted current paths and other non-schottky barrier paralleled conduction paths in the ceramic. repeated pulsing of transguard tran- sient voltage suppressors with 150amp peak 8 x 20? waveforms shows negligible degradation in breakdown voltage and minimal increases in leakage current. this does not mean that transguard suppressors do not suffer degradation, but it occurs at much higher current. typical performance curves (0402 chip size) voltage/current characteristics pulse degradation vc04lc18v500 vc040214x300 vc040218x400 vc040205x150 vc040209x200 100 80 60 40 20 0 10 -9 10 -7 10 -5 10 -3 10 -1 10 10 3 10 5 current (a) vo ltage (v) vc04lc18v500 vc040214x300 vc040218x400 vc040205x150 vc040209x200 10 100 1000 10000 8kv esd strikes breakdown voltage (vb) 35 30 25 20 15 10 5 vc040205x vc04lc18v vc040214x vc040218x vc040209x 0 -5 -10 -15 -20 -25 0.01 0.1 1 10 frequency (ghz) db vc04lc18v500 vc040214x300 vc040218x400 vc040205x150 vc040209x200 1300 1200 10 100 1000 impulse duration ( s) peak power (w) 1100 1000 900 800 700 600 500 400 300 200 100 0 peak power vs pulse duration insertion loss characteristics esd test of 0402 parts
7 t ransguard a vx multilayer ceramic transient voltage suppressors typical performance curves (0603, 0805, 1206 & 1210 chip sizes) voltage/current characteristics multilayer construction and improved grain structure result in excellent transient clamping characteristics up to 500 amps peak current, depending on case size and energy rating, while maintaining very low leakage currents under dc operating condi- tions. the vi curve below shows the voltage/current characteristics for the 3.3v, 5.6v, 12v, 14v, 18v, 26v, 30v, 48v and 60vdc parts with currents ranging from parts of a micro amp to tens of amps. vi curves - 9v, 12v, and 14v products 50 40 30 20 10 0 10 -9 10 -6 10 -3 10 +0 10 +3 current (a) voltage (v) 9v, 0.1j 12v, 0.1j 14v, 0.1j 14v, >0.1j vi curves - 3.3v and 5.6v products 25 20 15 10 5 0 10 -9 10 -6 10 -3 10 +0 10 +3 current (a) voltage (v) 3.3v, 0.1j 3.3v, >0.1j 5.6v, 0.1j 5.6v, >0.1j vi curves - 30v, 48v, and 60v products 200 150 100 50 0 10 -9 10 -6 10 -3 10 +0 10 +3 current (a) voltage (v) 30v, 0.1j 30v, >0.1j 48v 60v vi curves - 18v and 26v products 100 80 60 40 20 0 10 -9 10 -6 10 -3 10 +0 10 +3 current (a) voltage (v) 18v, 0.1j 18v, >0.1j 26v, 0.1j 26v, >0.1j
8 t ransguard a vx multilayer ceramic transient voltage suppressors typical performance curves (0603, 0805, 1206 & 1210 chip sizes) 3.3v
9 t ransguard a vx multilayer ceramic transient voltage suppressors temperature dependence of voltage 10 20 30 40 50 60 70 80 90 100 voltage as a percent of average breakdown voltage 10 -9 10 -8 10 -7 10 -6 10 -5 10 -4 10 -3 10 -2 current (a) -40 c 25 c 85 c 125 c -60 -40 -20 0 20 40 60 80 100 120 140 160 1.25 1 0.8 0.6 0.4 0.2 0 o typical energy derating vs temperature temperature ( c) energy derating typical performance curves (0603, 0805, 1206 & 1210 chip sizes) temperature characteristics t ransguard suppressors are designed to operate over the full temperature range from -55? to +125?. this operating temperature range is for both surface mount and axial leaded products. -55 -40 -20 0 20 40 60 80 100 120 140 150 typical breakdown and clamping voltages vs temperature - 18v 18v temperature ( c) typical breakdown (v ) and clamping (v ) voltages b c o 50 40 30 20 v v b c ( ) ( ) -55 -40 -20 0 20 40 60 80 100 120 140 150 typical breakdown and clamping voltages vs temperature - 5.6v 5.6v temperature ( c) typical breakdown (v ) and clamping (v ) voltages v v b b c c o 20 15 10 5 -55 -40 -20 0 20 40 60 80 100 120 140 150 typical breakdown and clamping voltages vs temperature - 26v temperature ( c) typical breakdown (v ) and clamping (v ) voltages b c 26v v v b c ( ) ( ) 60 50 40 30 average 25 c reference +25 +20 +15 +10 +5 0 -5 -10 -15 -20 -25 -40 -20 0 20 40 60 80 100 120 140 temperature ( c) capacitance relative to 25 c typical capacitance vs temperature
10 t ransguard a vx multilayer ceramic transient voltage suppressors repetitive peak current strikes t ransguard 1210 1.5j product 10% 8% 4% 2% 0% 6% 0 100 200 300 400 500 600 number of strikes change in breakdown voltage (%) vc121018j390 figure 3 30% 25% 15% 5% 10% 0% 20% 0 100 200 300 400 500 600 number of strikes change in breakdown voltage (%) vc08lc18a500 figure 4 repetitive peak current strikes staticguard 0805 0.1j product pulse degradation tr aditionally varistors have suffered degradation of electrical perfor- mance with repeated high current pulses resulting in decreased breakdown voltage and increased leakage current. it has been suggested that irregular intergranular boundaries and bulk material r esult in restricted current paths and other non-schottky barrier paralleled conduction paths in the ceramic. repeated pulsing of both 5.6 and 14v transguard transient voltage suppressors with 150 amp peak 8 x 20? waveforms shows negligible degradation in breakdown voltage and minimal increases in leakage current. this does not mean that transguard suppressors do not suffer degradation, but it occurs at much higher current. the plots of typical breakdown voltage vs number of 150a pulses are shown below. typical performance curves (0603, 0805, 1206 & 1210 chip sizes) vc060305a150 vc060326a580 vc06lc18x500 100 80 60 40 20 0 02040 frequency (mhz) 60 80 100 capacitance change (%) vc080518c400 vc080514a300 vc080505c150 100 80 60 40 20 0 02040 frequency (mhz) 60 80 100 capacitance change (%) vc120648d101 vc12lc18a500 vc120614d300 100 80 60 40 20 0 02040 frequency (mhz) 60 80 100 capacitance change (%) tr ansguard capacitance vs frequency 0603 transguard capacitance vs frequency 0805 transguard capacitance vs frequency 1206 10% 8% 4% 2% 0% 6% 0 100 200 300 400 500 600 number of strikes change in breakdown voltage (%) vc120618d400 vc120626d580 vc120614d300 vc120605d150 figure 1 repetitive peak current strikes t ransguard 0805 0.1j and 0.3j products 0% 5% 10% 15% 0 100 200 300 400 500 600 number of strikes change in breakdown voltage (%) vc080518c400 vc080518a400 figure 2 repetitive peak current strikes t ransguard 1206 0.4j product capacitance/frequency characteristics
|
