07D 05D min max max

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1 SVR (b)taping Specification: SUCCESS Straight Leads Crimped Leads P2 P H0 H B I P2 P h h W0 W W0 W H W2 W1 W2 W1 I Do P1 P0 F Do P1 P0 F t t Symbol Parameter P Pitch of Component P0 Feed Hole Pitch P1 Feed Hole Center to Lead P2 Hole Center to Component Center F Lead to Lead Distance h Component Alignment W Tape Width W0 Hold Down Tape Width W1 Hold Position W2 Hold Down Tape Position H Height from Tape Center to Component 1 Length of Clipped Lead Do Feed Hole Diameter t Total Tape Thickness Unit:mm Series Note:Applicable Lead style First Code: A, I, J only Packaging Specifications Packing Dimensions in mm Series Quantity 100max Box 350max 180max 500 Ammo Reel max

2 SUCCESSVR Materials and Marking Marking Electrode Material Coating Material Lead Material :Zinc Oxide Varistor : Ag Paste :Epoxy :Tin Plated Copper Wire EPOXY ENCAPSULATE VARISTOR BARE DISC Ag PASTE Zinc Oxide Ag PASTE Ag PASTE COPPER WIRE TIN COATING D T H 3.0mm max. Dimension Table Series unit:mm d 20mm min. Dmax d( 0.02) F ( 1.0) F Hmax T max. Table unit:mm Part No. Part No. 180K 301K 220K 331K K K 330K 391K K K K 471K K 511K K K K K K 681K K 751K K 781K K 821K K K K 102K K 112K K 182K

3 SVR SUCCESS Definitions of Technical Terms *Voltage-Current Characteristics Voltage(V) =10 -cm 1=KV Low region Varistor action region Low region Current(A) (c) =1-10 -cm *Varistor Voltage(breakdown voltage): The varistor voltage is the voltage across the varistor measured at a specified current lc(0.1ma or 1mA)of specified duration. *Max. allowable Voltage and leakage current The maximum operating voltage corresponds to the "rest"state of the varistor.this"rest"voltage offers a low leakage current in order to limit the power consumption of the protective device and not to disturb the circuit to be protected. The leakage currents usually have values in the range of a few micro-amperes. *Non linear exponent( ): The varistor voltage-current characteristic is defined by the equation: l=kv,where K is a constant dependent on geometry, and is the non linear exponent. We usually take two points(v1,l1),(v2,l2 ) to estimate the value of. logi1 /I2 = in which l1 and l2 are the current value logv1 /V2 corresponding to the voltage value V1 and V2 *Rated power The maximum power that can be applied within the specified ambient temperature. *Capacitance The capacitance of varistor is the reference value measured between the varistor terminals at specified frequency. 6

4 SUCCESSVR *Withstanding surge current: Withstanding surge current is the maximum peak current for the varistor with the specified standard impulse current(8x20 sec) applied one time or two times and corresponding to a permissible variation of 10% in the varistor voltage change. *Maximum clamping voltage: Maximum clamping voltage is the maximum voltage Vp between two terminals with the specified standard impulse current l (8x20 sec). The voltage value is an indication on the protective function of the varistor. *Energy Maximum energy from one or a burst of pulses. It is the value within the varistor change of 10% when one impulse of 10x sec is applied. E=KxVmxImxT E:Energy K:constant=1.4 Vm:Max.clamping voltage at Im. Im:Max.allowable single surge current of 10x sec. T:Duration of surge current( sec) *Pulse Iifetime rating This is expressed as the maximum allowable number of impulse currents applied.8x20 sec impulse current(or 10x sec)is applied at prescribed interval. This curve also provides for derating current as required with repetitive pulsing. Crest value Current(%) 50 t1=8 t2=20 for8 20 sec t1=10 t2= for10 sec 10 0 t1 t2 Impulse Width Time(sec) 7

5 SVR 3.Varistor Selection Flow chart Start SUCCESS Identification of surge source Identification of surge route Determination of Varistor connection method Line-line:check line voltage Line-ground:check the voltage at ground fault,and at withstanding voltage test Determination of varistor voltage Determination of surge current waveform (Crest value, wave tail duration,number of surge, interval) Unknown Assumption Is the withstand energy sufficient? Is the withstand surge current sufficient? Is the surge life sufficient? Is the average pulse power sufficient? Determination of the withstand voltage of apparatus Is the withstand voltage of apparatus greater than or equal to clamping voltage? Doesn't the loss due to electrostatic capacity become a problem? Doesn't the loss due to the leakage current become a problem? Have all the surge routes been treated with preventive measures? Studying of the wiring method Upgrading of the withstand voltage of apparatus Check with the Success of bigger disk size Reduction of tolerance of varistor voltage Additional surge impedance Check with the Success of smaller disk size Check with Success of higher varistor voltage calculation from surge voltage & surge impedance Check with the success of the larger disk diameter Are the preventive measures against the overload of Varistor sufficient? Are the environmental conditions within the prescription of the specifications? Has the mounting test been given? Judgement Installation of fuse, leakage current breaker, etc. Checking with special specifications Is the theortical examination enough? Administration of tests 8 Completion of counter surge measures Ref:M. Sumiyopshi(Matsushita),"Advances in Varistor Technology: Ceram. Trans., Vol.3,p22-29.(1989)

6 4. Specifications SUCCESSVR 9 180K 220K 270K 330K 390K 470K 560K 680K 820K 101K 121K 151K 181K 201K 221K 241K 271K 301K 331K 361K 391K 431K 471K 511K 561K 621K 681K 751K 781K 821K 911K 102K 112K 182K 18( ) 22(20-24) 27(24-30) 33(30-36) 39(35-43) 47(42-52) 56(50-62) 68(61-75) 82(74-90) 100(90-110) 120( ) 150( ) 180( ) 200( ) 220( ) 240( ) 270( ) 300( ) 330( ) 360( ) 390( ) 430( ) 470( ) 510( ) 560( ) 620( ) 680( ) 750( ) 780( ) 820( ) 910( ) ( ) 1100( ) 1800( ) SVR. Varistor Voltage (V1mA ) Maximum Allowable Voltage AC DC Varistor Voltage: series...v0.1ma,,, series...v1ma Operating Temperature Range:-40 to 85 C Storage Temperature Range:-40 to 125 C Table of Summary