Products Overview 3. MD Series 4. Packing & Dimension 5. Products Overview 8. Explanation of Part Number 9. D Series (5D, 7D, 10D, 14D, 20D) 10

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1 Advanced Material On TECHnology - AMOTECH Disk Varistor/ SMD Molded Varistor >> CONTENTS SMD Molded Varistor Products Overview 3 MD Series 4 Packing & Dimension 5 Disk Varistor Products Overview 8 Explanation of Part Number 9 D Series (5D, 7D, D, 14D, 20D) High Energy S Series (5D, 7D, D, 14D, 20D) 20 HC Series 22 AUTO Series 24 AUTO(PT) Series 26 Taping Specifications 28 Cutting Specifications 31 Application 32 Failure of ZnO Varistor 39 Advanced Material On TECHnology

2 Advanced Material On TECHnology - AMOTECH SMD Molded Varistor Products Overview MD Series Packing & Dimension Advanced Material On TECHnology

3 Products Overview PRODUCTS OVERVIEW Construction Shape & Dimension 1. Cylindrical varistor element, encapsulated 2. Encapsulation : Thermoplast, Flame-retardant 3. Termination : Soldered Ni-Fe alloy Features 1. Large with standing surge current capability in compact size 2. Excellent response against high steep surge voltage 3. Low clamping voltage for better surge protection (mm) Type L W T C1 C2 H 32MD1~ MD211~ MD1~ MD211~ Recommended Solder Pad Layout (mm) Applications 1. Suppression for inductive switching or other transient events such as surge voltage at the board level 2. Provide on-board transient voltage proection of IC and transistors Type A B C D 32MD1~ MD211~301 40MD1~171 40MD211~ Ordering Information 32 MD 271 K Symbol : AMOTECH Dimensions Design : SMD molded varistor Maximum allowable voltage : Working voltage 1 = 11VAC 500 = 50VAC 271 = 275VAC 171 = 175VAC Tolerance of working voltage: J : 5%, K : %, L : 15% M : 20% Products Overview 3

4 AMOTECH SMD Molded Varistor Series MD Electrical Characteristics Part Number Working Varistor (V:1mA Dc) Clamping (VC* Max) Transient Energy (J) Peak Current (A) Capacitance 32MD1 40MD1 32MD140 40MD140 32MD170 40MD170 32MD200 40MD200 32MD250 40MD250 32MD300 40MD300 32MD350 40MD350 32MD400 40MD400 32MD500 40MD500 32MD600 40MD600 32MD750 40MD750 32MD950 40MD950 32MD111 40MD111 32MD131 40MD131 32MD141 40MD141 32MD151 40MD151 31MD171 40MD171 32MD211 40MD211 32MD231 40MD231 32MD251 40MD251 32MD271 40MD271 32MD301 40MD301 32MD141 40MD141 (VAC) (VDC) < (16~20) 18(16~20) 22(20~24) 22(20~24) 27(24~30) 27(24~30) 33(30~36) 33(30~36) 39(35~43) 39(35~43) 47(42~52) 47(42~52) 56(50~62) 56(50~62) 68(61~75) 68(61~75) 82(74~90) 82(74~90) 0(90~1) 0(90~1) 120(8~132) 120(8~132) 150(135~165) 150(135~165) 180(162~198) 180(162~198) 200(180~220) 200(180~220) 220(195~242) 220(195~242) 240(216~264) 240(216~264) 270(243~297) 270(243~297) 330(297~363) 330(297~363) 360(324~396) 360(324~396) 390(351~429) 390(351~429) 430(387~473) 430(387~473) 470(423~517) 470(423~517) 7(639~781) 7(639~781) 8/ ,180 1,145 / / , , , , , , , , , , , , , , ,200 1kHz 2,200 5,000 2,000 4,200 1,800 3,600 1,400 3,200 1,200 2,700 1,000 2, , , Series MD

5 Packing & Dimension Packing Specifications (W=16mm) Feeding hole D Chip Pocket T1 A B E F W P1 P2 P3 Tape running direction T2 Dimensions in mm Dimensions(mm) A B W F E P1 P2 P0 D T1(max.) T2 32MD , max 40MD , max Reel Dimensions Reel Type size Amax B Cmin Dmin Nmin W1 W2 Dimension(mm) 382 max Packing Quantity Size Code Embossed Taping Bulk 32MD, 40MD 2,000 pcs/reel 200 pcs/bag Packing & Dimension 5

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7 Advanced Material On TECHnology - AMOTECH Disk Varistor Products Overview Explanation of Part Number D Series(5D, 7D, D, 14D, 20D) High Energy S Series(5D, 7D, D, 14D, 20D) HC Series AUTO Series AUTO(PT) Series Taping Specifications Cutting Specifications Application Advanced Material On TECHnology

8 AMOTECH DISK VARISTOR Products Overview Description Varistor is a non-linear resistance material in which the current varies as a power of the applied voltage. sensitive varistors have been used to great advance in many important application in the electrical-power, communications and electronic industries. Varistors are made from electrical grade ZINC OXIDE. Special shapes that can be producted by pressure molding or extrusion are also available. * Suppression of mains-borne transients in consumer and industrial equipmet. * Suppression of internally-generated spikes in electronic ciecuitry. * Suppression of line transients in telephony equipment. Features 1. Wide voltage/energy range 2. Excellent clamp ratio 3. Fast response time 4. Low stand by power 5. No follow-on current 6. Low leakage current 7. Symmetric V-I Characterisitics 8. Low series resistance Explanation The crystal structure of a varistor has no directionality therefore Varistors are bipolar devices with symmetrical, sharp voltage breakdown characteristics, they exhibit an electrical behaviour similar to back-to-back Zener Diodes. Zener Diode can be used in negative polarity, so Zener Diode can also be used in both polarities to two back-to-back diodes, but cost increases. Varistor electrical characeristics are conventionally displayed the log-log format for the purpose of expression of the characteristics. This type of display is known as the V-I Curve or Characteristic Curve. The V-I Curve has three distinct regions. 8 Products Overview

9 Explanation of Part Number Element diameter 5 5mm 7 7mm mm 14 14mm 20 20mm Series D S AUTO Tolerance J 5% K % L 15% M 20% S K Y Lead Shape Straight Kinked Y-Forming I N R - - Symbol of AMOTECH VARISTOR Varistor L/W Length(only Cutting) B C T Packing Bulk Standard Bulk Cutting Taping Explanation of Part Number 9

10 AMOTECH DISK VARISTOR Series D 5D Dimension in mm Tmax. Tmax. Dmax : 7.0 P : Hmax : 9.0 5D180K 5D220K 5D270K 5D330K 5D390K 5D470K 5D560K 5D680K 5D820K 5D1K 5D121K 5D151K 5D181K D201K 5D221K 5D241K 5D271K 5D331K 5D361K 5D391K 5D431K 5D471K 5D511K 5D561K 5D621K Electrical Characteristic Varistor Maximum Allowable Maximum Clamping Rated Power Maximum Energy /1,000 Peak Current 8/20 Capacitance DC 0.1mA AC(V) DC (V) Max.(V) Ip(A) (W) (J) (A) pf@1khz 5D180K 18 ( 16 ~ 20 ) ,200 5D220K 22 ( 20 ~ 24 ) ,000 5D270K 27 ( 24 ~ 30 ) ,800 5D330K 33 ( 30 ~ 36 ) ,400 5D390K 39 ( 35 ~ 43 ) ,200 5D470K 47 ( 42 ~ 52 ) ,000 5D560K 56 ( 50 ~ 62 ) D680K 68 ( 61 ~ 75 ) D820K 82 ( 74 ~ 90 ) D1K 0 ( 90 ~ 1 ) D121K 120 ( 8 ~ 132 ) D151K 150 ( 135 ~ 165 ) D181K 180 ( 162 ~ 198 ) D201K 200 ( 180 ~ 220 ) D221K 220 ( 198 ~ 242 ) D241K 240 ( 216 ~ 264 ) D271K 270 ( 243 ~ 297 ) D331K 330 ( 297 ~ 363 ) D361K 360 ( 324 ~ 396 ) D391K 390 ( 351 ~ 429 ) D431K 430 ( 387 ~ 473 ) D471K 470 ( 423 ~ 517 ) D511K 5 ( 459 ~ 561 ) D561K 560 ( 504 ~ 616 ) D621K 620 ( 558 ~ 682 ) , Design, Specifications are subject to change without notice. Series D 5D

11 Series D 5D Typical Characteristics VS. Current Impulse 5D180K~5D680K 00 (V) Test Current : -6 to -4 - Direct Current -4 to 4-8/20 Impulse Current Pulse Current (A) Pulse Current (A) Pulse Duration( ) 00 5D820K~5D471K 1 Pulse (V) Test Current : -6 to -4 - Direct Current -4 to 4-8/20 Impulse Current Pulse Current (A) Current (A) Pulse Duration( ) Series D 5D 11

12 AMOTECH DISK VARISTOR Series D 7D Dimension in mm Tmax. Tmax. Dmax : 9.0 P : Hmax :.5 7D180K 7D220K 7D270K 7D330K 7D390K 7D470K 7D560K 7D680K 7D820K 7D1K 7D121K 7D151K 7D181K 7D201K 7D221K D241K 7D271K 7D331K 7D361K 7D391K 7D431K 7D471K 7D511K 7D561K 7D621K 7D681K 7D751K 7D781K 7D821K Electrical Characteristic Varistor Maximum Allowable Maximum Clamping Rated Power Maximum Energy /1,000 Peak Current 8/20 Capacitance 7D180K 18 ( 16 ~ 20 ) ,000 7D220K 22 ( 20 ~ 24 ) ,200 7D270K 27 ( 24 ~ 30 ) ,600 7D330K 33 ( 30 ~ 36 ) ,200 7D390K 39 ( 35 ~ 43 ) ,700 7D470K 47 ( 42 ~ 52 ) ,200 7D560K 56 ( 50 ~ 62 ) ,000 7D680K 68 ( 61 ~ 75 ) ,600 7D820K 82 ( 74 ~ 90 ) , D1K 0 ( 90 ~ 1 ) , D121K 120 ( 8 ~ 132 ) , D151K 150 ( 135 ~ 165 ) , D181K 180 ( 162 ~ 198 ) , D201K 200 ( 180 ~ 220 ) , D221K 220 ( 198 ~ 242 ) , D241K 240 ( 216 ~ 264 ) , D271K 270 ( 243 ~ 297 ) , D331K 330 ( 297 ~ 363 ) , D361K 360 ( 324 ~ 396 ) , D391K 390 ( 351 ~ 429 ) , D431K 430 ( 387 ~ 473 ) , D471K 470 ( 423 ~ 517 ) , D511K 5 ( 459 ~ 561 ) , D561K 560 ( 504 ~ 616 ) , D621K 620 ( 558 ~ 616 ) , , D681K 680 ( 612 ~ 748 ) , , D751K 750 ( 675 ~ 825 ) , , D781K 780 ( 702 ~ 858 ) , , D821K 820 ( 738 ~ 902 ) , , Series D 7D DC 0.1mA AC(V) DC (V) Max.(V) Ip(A) (W) (J) (A) pf@1khz Design, Specifications are subject to change without notice.

13 Series D 7D Typical Characteristics VS. Current Impluse 7D180K~7D680K 00 (V) Pulse Current (A) 1 Pulse Current (A) Test Current : -6 to -3 - Direct Current -3 to 4-8/20 Impulse Current Pulse Duration( ) 7D820K~7D471K 00 1 Pulse (V) Pulse Current (A) Test Current : -6 to -3 - Direct Current -3 to 4-8/20 Impulse Current Current (A) Pulse Duration( ) Series D 7D 13

14 AMOTECH DISK VARISTOR Series D D Dimensions in mm Dmax : 14.0 P : Hmax : 15.5 D180K D220K D270K D330K D390K D470K D560K D680K D820K D1K D121K D151K D181K D201K D221K D241K Tmax. Tmax. 4.2 D271K D331K D361K D391K D431K D471K D561K D621K D681K D751K D781K D821K D911K D2K D112K Electrical Characteristic Varistor Maximum Allowable Maximum Clamping Rated Power Maximum Energy /1,000 Peak Current 8/20 Capacitance DC 1mA AC(V) DC (V) Max.(V) Ip(A) (W) (J) (A) pf@1khz D180K 18 ( 16 ~ 20 ) ,500 D220K 22 ( 20 ~ 24 ) ,500 D270K 27 ( 24 ~ 30 ) ,500 D330K 33 ( 30 ~ 36 ) ,500 D390K 39 ( 35 ~ 43 ) ,500 D470K 47 ( 42 ~ 52 ) ,000 D560K 56 ( 50 ~ 62 ) ,500 D680K 68 ( 61 ~ 75 ) ,000 D820K 82 ( 74 ~ 90 ) ,500 1,500 D1K 0 ( 90 ~ 1 ) ,500 1,400 D121K 120 ( 8 ~ 132 ) ,500 1,0 D151K 150 ( 135 ~ 165 ) ,500 1,000 D181K 180 ( 162 ~ 198 ) , D201K 200 ( 180 ~ 220 ) , D221K 220 ( 198 ~ 242 ) , D241K 240 ( 216 ~ 264 ) , D271K 270 ( 243 ~ 297 ) , D331K 330 ( 297 ~ 363 ) , D361K 360 ( 324 ~ 396 ) , D391K 390 ( 351 ~ 429 ) , D431K 430 ( 387 ~ 473 ) , D471K 470 ( 423 ~ 517 ) , D561K 560 ( 504 ~ 616 ) , D621K 620 ( 558 ~ 682 ) , , D681K 680 ( 612 ~ 748 ) , , D751K 750 ( 675 ~ 825 ) , , D781K 780 ( 702 ~ 858 ) , , D821K 820 ( 738 ~ 902 ) , , D911K 9 ( 819 ~ 1,001 ) , , D2K 1,000 ( 900 ~ 1,0 ) , , D112K 1,0 ( 990 ~ 1,2 ) , , Design, Specifications are subject to change without notice. 14 Series D D

15 Series D D Typical Characteristics VS. Current Impluse D180K~D680K 00 1 Pulse (V) Pulse Current (A) Current (A) Test Current : -6 to -3 - Direct Current -3 to 4-8/20 Impulse Current Pulse Duration( ) D820K~D112K 1 Pulse (V) Pulse Current (A) Test Current : -6 to -3 - Direct Current -3 to 4-8/20 Impulse Current Current (A) Pulse Duration( ) Series D D 15

16 AMOTECH DISK VARISTOR Series D 14D Dimensions in mm Dmax : 17.0 P : Hmax : D180K 14D220K 14D270K 14D330K 14D390K 14D470K 14D560K 14D680K 14D820K 14D1K 14D121K 14D151K 14D181K 14D201K 14D221K 14D241K Tmax. Tmax D271K D331K D361K D391K D431K D471K D561K D621K D681K D751K D781K D821K D911K D2K D112K D182K 9.7 Electrical Characteristic Varistor Maximum Allowable Maximum Clamping Rated Power Maximum Energy /1,000 Peak Current 8/20 Capacitance DC 1mA AC(V) DC (V) Max.(V) Ip(A) (W) (J) (A) pf@1khz 14D180K 18 ( 16 ~ 20 ) ,000 18,000 14D220K 22 ( 20 ~ 24 ) ,000 15,000 14D270K 27 ( 24 ~ 30 ) ,000 13,000 14D330K 33 ( 30 ~ 36 ) ,000 12,000 14D390K 39 ( 35 ~ 43 ) ,000 9,000 14D470K 47 ( 42 ~ 52 ) ,000 7,500 14D560K 56 ( 50 ~ 62 ) ,000 6,500 14D680K 68 ( 61 ~ 75 ) ,000 4,000 14D820K 82 ( 74 ~ 90 ) ,500 3,000 14D1K 0 ( 90 ~ 1 ) ,500 2,800 14D121K 120 ( 8 ~ 132 ) ,500 2,000 14D151K 150 ( 135 ~ 165 ) ,500 1,500 14D181K 180 ( 162 ~ 198 ) ,500 1,200 14D201K 200 ( 180 ~ 220 ) ,500 1,000 14D221K 220 ( 198 ~ 242 ) ,500 1,000 14D241K 240 ( 216 ~ 264 ) , D271K 270 ( 243 ~ 297 ) , D331K 330 ( 297 ~ 363 ) , D361K 360 ( 324 ~ 396 ) , D391K 390 ( 351 ~ 429 ) , D431K 430 ( 387 ~ 473 ) , D471K 470 ( 423 ~ 517 ) , D561K 560 ( 504 ~ 616 ) , D621K 620 ( 558 ~ 682 ) , , D681K 680 ( 612 ~ 748 ) , , D751K 750 ( 675 ~ 825 ) , , D781K 780 ( 702 ~ 858 ) , , D821K 820 ( 738 ~ 902 ) , , D911K 9 ( 819 ~ 1,001 ) , , D2K 1,000 ( 900 ~ 1,0 ) , , D112K 1,0 ( 990 ~ 1,2 ) , , D182K 1,800 ( 1,620 ~ 1,980 ) 1,000 1,465 2, , Design, Specifications are subject to change without notice. 16 Series D 14D

17 Series D 14D Typical Characteristics VS. Current Impluse (V) 14D680K 14D560K 14D470K 14D390K 14D330K 14D270K 14D220K 14D180K Pulse Current (A) D180K~14D680K 1 Pulse Current (A) Test Current : -6 to -3 - Direct Current -3 to 4-8/20 Impulse Current Pulse Duration( ) 14D820K~14D182K (V) Pulse Current (A) Pulse Test Current : -6 to -3 - Direct Current -3 to 4-8/20 Impulse Current Current (A) Pulse Duration( ) Series D 14D 17

18 AMOTECH DISK VARISTOR Series D 20D Dimensions in mm Dmax : 25.0 P : Hmax : D180K 20D220K 20D270K 20D330K 20D390K 20D470K 20D560K 20D680K 20D820K 20D1K 20D121K 20D151K 20D181K 20D201K 20D221K 20D241K Tmax. Tmax D271K D331K D361K D391K D431K D471K D561K D621K D681K D751K D781K D821K D911K D2K D112K D182K 9.7 Electrical Characteristic Varistor Maximum Allowable Maximum Clamping Rated Power Maximum Energy /1,000 Peak Current 8/20 Capacitance DC 1mA AC(V) DC (V) Max.(V) Ip(A) (W) (J) (A) pf@1khz 20D180K 18 ( 16 ~ 20 ) ,000 40,000 20D220K 22 ( 20 ~ 24 ) ,000 35,000 20D270K 27 ( 24 ~ 30 ) ,000 3,000 20D330K 33 ( 30 ~ 36 ) ,000 2,500 20D390K 39 ( 35 ~ 43 ) ,000 2,200 20D470K 47 ( 42 ~ 52 ) ,000 1,800 20D560K 56 ( 50 ~ 62 ) ,000 1,200 20D680K 68 ( 61 ~ 75 ) ,000 7,500 20D820K 82 ( 74 ~ 90 ) ,500 6,000 20D1K 0 ( 90 ~ 1 ) ,500 5,000 20D121K 120 ( 8 ~ 132 ) ,500 4,000 20D151K 150 ( 135 ~ 165 ) ,500 3,500 20D181K 180 ( 162 ~ 198 ) ,500 2,700 20D201K 200 ( 180 ~ 220 ) ,500 2,500 20D221K 220 ( 198 ~ 242 ) ,500 2,250 20D241K 240 ( 216 ~ 264 ) ,500 2,000 20D271K 270 ( 243 ~ 297 ) ,500 1,800 20D331K 330 ( 297 ~ 363 ) ,500 1,600 20D361K 360 ( 324 ~ 396 ) ,500 1,400 20D391K 390 ( 351 ~ 429 ) ,500 1,200 20D431K 430 ( 387 ~ 473 ) ,500 1,000 20D471K 470 ( 423 ~ 517 ) ,500 1,000 20D561K 560 ( 504 ~ 616 ) , D621K 620 ( 558 ~ 682 ) , , D681K 680 ( 612 ~ 748 ) , , D751K 750 ( 675 ~ 825 ) , , D781K 780 ( 702 ~ 858 ) , , D821K 820 ( 738 ~ 902 ) , , D911K 9 ( 819 ~ 1,001 ) , , D2K 00 ( 900 ~ 1,0 ) , , D112K 10 ( 990 ~ 1,2 ) , , D182K 1800 ( 1,620 ~ 1,980 ) 1,000 1,465 2, , Design, Specifications are subject to change without notice. 18 Series D 20D

19 Series D 20D Typical Characteristics VS. Current Impluse 20D180K~20D680K (V) Pulse Current (A) Pulse Test Current : -6 to -3 - Direct Current -3 to 4-8/20 Impulse Current Current (A) Pulse Duration( ) (V) Pulse Current (A) 20D180K~20D182K Pulse Test Current : -6 to -3 - Direct Current -3 to 4-8/20 Impulse Current Current (A) Pulse Duration( ) Series D 20D 19

20 AMOTECH DISK VARISTOR High Energy Series S 5D/7D/D/14D/20D Electrical Characteristic Series S 5D Varistor Maximum Allowable Maximum Clamping Rated Power Maximum Energy /1,000 Peak Current 8/20 Capacitance DC 0.1mA AC(V) DC (V) Max.(V) Ip(A) (W) (J) (A) pf@1khz 5S201K 200 ( 180 ~ 220 ) S221K 220 ( 198 ~ 242 ) S241K 240 ( 216 ~ 264 ) S271K 270 ( 243 ~ 297 ) S331K 330 ( 297 ~ 363 ) S361K 360 ( 324 ~ 396 ) S391K 390 ( 351 ~ 429 ) S431K 430 ( 387 ~ 473 ) S471K 470 ( 423 ~ 517 ) Series S 7D Varistor Maximum Allowable Maximum Clamping Rated Power Maximum Energy /1,000 Peak Current 8/20 Capacitance DC 0.1mA AC(V) DC (V) Max.(V) Ip(A) (W) (J) (A) pf@1khz 7S201K 200 ( 180 ~ 220 ) , S221K 220 ( 198 ~ 242 ) , S241K 240 ( 216 ~ 264 ) , S271K 270 ( 243 ~ 297 ) , S331K 330 ( 297 ~ 363 ) , S361K 360 ( 324 ~ 396 ) , S391K 390 ( 351 ~ 429 ) , S431K 430 ( 387 ~ 473 ) , S471K 470 ( 423 ~ 517 ) , Series S D Varistor Maximum Allowable Maximum Clamping Rated Power Maximum Energy /1,000 Peak Current 8/20 Capacitance DC 0.1mA AC(V) DC (V) Max.(V) Ip(A) (W) (J) (A) pf@1khz S201K 200 ( 180 ~ 220 ) , S221K 220 ( 198 ~ 242 ) , S241K 240 ( 216 ~ 264 ) , S271K 270 ( 243 ~ 297 ) , S331K 330 ( 297 ~ 363 ) , S361K 360 ( 324 ~ 396 ) , S391K 390 ( 351 ~ 429 ) , S431K 430 ( 387 ~ 473 ) , S471K 470 ( 423 ~ 517 ) , S561K 560 ( 504 ~ 616 ) , S621K 620 ( 558 ~ 626 ) , , S681K 680 ( 612 ~ 748 ) , , S751K 750 ( 675 ~ 825 ) , , Design, Specifications are subject to change without notice. 20 High Energy Series S

21 High Energy Series S 5D/7D/D/14D/20D Series S 14D Varistor Maximum Allowable Maximum Clamping Rated Power Maximum Energy /1,000 Peak Current 8/20 Capacitance DC 0.1mA AC(V) DC (V) Max.(V) Ip(A) (W) (J) (A) pf@1khz 14S201K 200 ( 180 ~ 220 ) ,000 1,000 14S221K 220 ( 198 ~ 242 ) ,000 1,000 14S241K 240 ( 216 ~ 264 ) , S271K 270 ( 243 ~ 297 ) , S331K 330 ( 297 ~ 363 ) , S361K 360 ( 324 ~ 396 ) , S391K 390 ( 351 ~ 429 ) , S431K 430 ( 387 ~ 473 ) , S471K 470 ( 423 ~ 517 ) , S561K 560 ( 504 ~ 616 ) , S621K 620 ( 558 ~ 626 ) , , S681K 680 ( 612 ~ 748 ) , , S751K 750 ( 675 ~ 825 ) , , Series S 20D Varistor Maximum Allowable Maximum Clamping Rated Power Maximum Energy /1,000 Peak Current 8/20 Capacitance DC 0.1mA AC(V) DC (V) Max.(V) Ip(A) (W) (J) (A) pf@1khz 20S201K 200 ( 180 ~ 220 ) ,000 2,500 20S221K 220 ( 198 ~ 242 ) ,000 2,250 20S241K 240 ( 216 ~ 264 ) ,000 2,000 20S271K 270 ( 243 ~ 297 ) ,000 1,800 20S331K 330 ( 297 ~ 363 ) ,000 1,600 20S361K 360 ( 324 ~ 396 ) ,000 1,400 20S391K 390 ( 351 ~ 429 ) ,000 1,200 20S431K 430 ( 387 ~ 473 ) ,000 1,000 20S471K 470 ( 423 ~ 517 ) ,000 1,000 20S561K 560 ( 504 ~ 616 ) , S621K 620 ( 558 ~ 626 ) , , S681K 680 ( 612 ~ 748 ) , , S751K 750 ( 675 ~ 825 ) , , Design, Specifications are subject to change without notice. High Energy Series S 21

22 AMOTECH DISK VARISTOR Series HC Dimensions in mm Tmax. Tmax. D max 32 HC : HC : 44.0 H max 32HC : HC : HC201K 32HC241K 32HC271K 32HC361K 32HC391K 32HC431K 32HC471K 32HC511K 32HC681K 32HC751K 32HC821K 32HC911K 32HC2K HC201K 40HC241K 40HC271K 40HC361K 40HC391K 40HC431K 40HC471K 40HC511K 40HC681K 40HC751K 40HC821K 40HC911K 40HC2K Electrical Characteristic Varistor Maximum Allowable Maximum Clamping Maximum Energy /1,000 Peak Current 8/20 DC 1mA AC(V) DC (V) Max.(V) Ip(A) (J) (KA) 32HC201K 200 ( 180 ~ 220 ) HC241K 240 ( 216 ~ 264 ) HC271K 270 ( 243 ~ 297 ) HC361K 360 ( 324 ~ 396 ) HC391K 390 ( 351 ~ 429 ) HC431K 430 ( 387 ~ 473 ) HC471K 470 ( 423 ~ 517 ) HC511K 5 ( 459 ~ 561 ) HC681K 680 ( 612 ~ 748 ) , HC751K 750 ( 675 ~ 825 ) , HC821K 820 ( 738 ~ 902 ) , HC911K 9 ( 819 ~ 1,001 ) , HC2K 1,000 ( 900 ~ 1,0 ) , HC201K 200 ( 180 ~ 220 ) HC241K 240 ( 216 ~ 264 ) HC271K 270 ( 243 ~ 297 ) HC361K 360 ( 324 ~ 396 ) HC391K 390 ( 351 ~ 429 ) HC431K 430 ( 387 ~ 473 ) HC471K 470 ( 423 ~ 517 ) HC511K 5 ( 459 ~ 561 ) HC681K 680 ( 612 ~ 748 ) , HC751K 750 ( 675 ~ 825 ) , HC821K 820 ( 738 ~ 902 ) , HC911K 9 ( 819 ~ 1,001 ) , HC2K 1,000 ( 900 ~ 1,0 ) , Design, Specifications are subject to change without notice. 22 Series HC

23 Series HC Typical Characteristics VS. Current (V) Test Current : -6 to -3 - Direct Current -3 to 4-8/20 Impulse Current Current (A) (V) Test Current : -6 to -3 - Direct Current -3 to 4-8/20 Impulse Current Current (A) Series HC 23

24 AMOTECH DISK VARISTOR Series AUTO Dimensions in mm Part Number Dmax. Tmax. D220K AUTO 4.8 D270K AUTO D330K AUTO D390K AUTO 7.8 D470K AUTO D220K AUTO D270K AUTO D330K AUTO D390K AUTO D470K AUTO.5 P Hmax. Electrical Characteristic Varistor Maximum Allowable Maximum Clamping Rated Power VJUMP ( 5min ) Peak Current 8/20 DC 1mA AC (V) DC (V) Max.(V) Ip (A) (W) (V) (A) D220K AUTO 22 ( 20 ~ 24 ) D270K AUTO 27 ( 24 ~ 30 ) D330K AUTO 33 ( 30 ~ 36 ) D390K AUTO 39 ( 35 ~ 43 ) D470K AUTO 47 ( 42 ~ 52 ) D220K AUTO 22 ( 20 ~ 24 ) ,000 14D270K AUTO 27 ( 24 ~ 30 ) ,000 14D330K AUTO 33 ( 30 ~ 36 ) ,000 14D390K AUTO 39 ( 35 ~ 43 ) ,000 14D470K AUTO 47 ( 42 ~ 52 ) ,000 Design, Specifications are subject to change without notice. 24 Series AUTO

25 Series AUTO Typical Characteristics VS. Current (V) Test Current : -6 to -3 - Direct Current -3 to 4-8/20 Impulse Current Current (A) (V) Test Current : -6 to -3 - Direct Current -3 to 4-8/20 Impulse Current Current (A) Series AUTO 25

26 AMOTECH DISK VARISTOR Series AUTO(PT) Dimensions in mm Part Number Dmax. Tmax. P Hmax. D220K AUTO D270K AUTO D220K AUTO D270K AUTO Electrical Characteristic Varistor Maximum Allowable Maximum Clamping Rated Power VJUMP ( 5min ) Peak Current 8/20 DC 1mA AC (V) DC (V) Max.(V) Ip (A) (W) (V) (A) D220K AUTO 22 ( 20 ~ 24 ) ,000 D270K AUTO 27 ( 24 ~ 30 ) ,000 14D220K AUTO 22 ( 20 ~ 24 ) ,000 14D270K AUTO 27 ( 24 ~ 30 ) ,000 Design, Specifications are subject to change without notice. Electrical Characteristic S K Y Lead Shape Straight Kinked Y-Forming L/W Length(only Cutting) I N R D K- - PT - Element diameter mm 14 14mm B C Packing Bulk Standard Bulk Cutting Working temperature Series AUTO(PT)

27 Series AUTO(PT) Typical Characteristics VS. Current (V) Test Current : -6 to -3 - Direct Current -3 to 4-8/20 Impulse Current Current (A) (V) Test Current : -6 to -3 - Direct Current -3 to 4-8/20 Impulse Current Current (A) Series AUTO(PT) 27

28 AMOTECH DISK VARISTOR Taping Specifications Out-Side Kinked Taping Dimensions in mm Series Symbol A 7.5 max 9.0 max 14.0 max 17.0 max d P P P P D W W max 12.5 max 12.5 max 12.5 max W W2 3.0 max 3.0 max 3.0 max 3.0 max H H H max 32.0 max 36.0 max 40.0 max h T L 7.0 max 7.0 max 7.0 max 7.0 max F Design, Specifications are subject to change without notice. 28 Taping Specifications

29 Taping Specifications Out-Side Kinked Taping Dimensions in mm Series Symbol A 7.5 max 9.0 max 14.0 max 17.0 max d P P P P D W W max 12.5 max 12.5 max 12.5 max W W2 3.0 max 3.0 max 3.0 max 3.0 max H H H max 32.0 max 36.0 max 40.0 max h T L 1.0 max 1.0 max 1.0 max 1.0 max F Design, Specifications are subject to change without notice. Taping Specifications 29

30 AMOTECH DISK VARISTOR Taping Specifications Y-Forming & Straight Taping Dimensions in mm Series Symbol A 7.5 max 9.0 max 14.0 max 17.0 max d P P P P D W W max 12.5 max 12.5 max 12.5 max W W2 3.0 max 3.0 max 3.0 max 3.0 max H H H max 32.0 max 36.0 max 40.0 max h T L 7.0 max 7.0 max 7.0 max 7.0 max F Design, Specifications are subject to change without notice. 30 Taping Specifications

31 Cutting Specifications Straight Cutting Type Series Symbol H Max.0 Max 12.0 Max 16.0 Max 20.0 Max 27.0 D Max 7.5 Max 9.0 Max 14.0 Max 17.0 Max 25.0 p d T 3.5 ~ ~ ~ ~ ~.1 C ~ ~ ~ ~ ~.0 Outside Kinked Cutting Type Series Symbol H Max 13.0 Max 15.0 Max 19.5 Max 23.0 Max 30.0 D Max 7.5 Max 9.0 Max 14.0 Max 17.0 Max 25.0 p d T 3.5 ~ ~ ~ ~ ~.1 C ~ ~ ~ ~ ~.0 Y - Forming Cutting Type Series Symbol H Max 13.0 Max 15.0 Max 19.5 Max 23.0 Max 30.0 D Max 7.5 Max 9.0 Max 14.0 Max 17.0 Max 25.0 p d T 3.5 ~ ~ ~ ~ ~.1 C ~ ~ ~ ~ ~.0 Design, Specifications are subject to change without notice. Cutting Specifications 31

32 AMOTECH DISK VARISTOR Application Selection of varistor voltage with line to ground connections Connections Nominal Line MODEL AC/DC Single - Phase(line to line) AC 1V 201K 221K 241K 271K 1) 201K FUSE 1 Protected circuit 1 AC 0V AC 120V 221K 241K 271K 1) 241K 271K 331K 1) AC 200V AC 220V 431K 471K 471K AC 240V 561K DC 12V 220K DC 24V 390K AC Three - Phase(line to line) AC 200V 471K FUSE 2 2 Protected circuit 2 AC 220V AC 240V 471K 561K 2 AC 380V 821K Notes : Disc size 5, 7,, 14, 20 : D series "D", S Series "S" Design, Specifications are subject to change without notice. Cautions Maximum operating voltage shall be lower than Maximum allowable voltage of. Varistor with are recommended for AC 0 V applications to withstand a temporary over voltage caused by LC resonation in capacitive load. 32 Application

33 Application Selection of varistor voltage with line to ground connections Connections Nominal Line MODEL AC/DC Single - Phase(line to ground) AC 0V AC 1V 471K Protected circuit AC 120V AC 200V 561K 751K 1) 182K 1) AC 220V AC 240V AC Three - Phase(line to ground) AC 200V 431K 471K FUSE 1 Protected circuit 4 5 AC 220V 751K 1) 182K 1) 561K AC 240V 182K 1) 821K 1) FUSE AC 380V 112K 182K 1) Notes : Disc size 5, 7,, 14, 20 : D series "D", S Series "S" Design, Specifications are subject to change without notice. Cautions When the 500V insulation resistance test or the 00v withstanding voltage test of the circuits employing is conducted, Varistor shall be removed after with the maximum allowable voltage exceeding to test voltage shall be used respectively. To avoid failure caused by the ground fault, Varistor with higher varistor voltage listed in the table shall be used for the AC 0V application. Application 33

34 AMOTECH DISK VARISTOR Application Protection of the switching surge, semiconductor, contact spark suppression Connections Nominal Line MODEL Switching surge protection 180K 1 DC 12V 220K 820K Semiconductor protection DC 24V 390K 820K 1 HEATER 1 DC 0V 151K 221K Contact spark protection S AC 1V 241K \ 271K 1 MOTOR AC 220V 431K 471K Notes : Disc size 5, 7,, 14, 20 : D series "D", S Series "S" Design, Specifications are subject to change without notice. Cautions The maximum allowable voltage of shall be higher than maximum operating voltage at all time. Energy handing (energy or wattage rating) of shall be selected by studing switching surge energy from the inductive load. The relation between surge current repetition and ratings is drawn in the impulse life characteristics of (Their parameters are impluse current crest, duration of impluse current and surge current repetition). Capacitor connection in parallel with is recommended for a contact spark suppression. 34 Application

35 Application Protection of the signal and telephone line Connections Nominal Line MODEL Signal line SIG 1 SIG 2 SIG 3 SIG 4 Equipment DC 12V 180K 1) 220K 1) 820K 1) GND DC 24V 390K 1) 820K 1) Telephone line TELEPHONE Telephone 1 = 151K 2 = 361K Notes : Disc size 5, 7,, 14, 20 : D series "D", S Series "S" Design, Specifications are subject to change without notice. Cautions has relatively high capacitance listed in the table. Special attention shall be paid for it in high frequency circuit. When high voltage such as the ringer voltage in telephone signal line is overlaid on signal voltage, varistor voltage of shall be selected based upon above higher voltage. When is insertion loss is very critical in high frequency circuit, with is recommended. Distinguish between 1 or 2 3. Application 35

36 AMOTECH DISK VARISTOR Application Example of some different application Solenoid Line Model DC 24V 390K S 1 AC 1V AC 200V 201K 471K V Solenoid AC 220V 471K Contact protection S/W Line Model DC 24V 390K V R 1 1 AC 1V AC 200V AC 220V 201K 471K 471K Thyristor protection Line Model V 1 1 DC 24V AC 1V 390K 201K AC 200V 471K Boiler Line Model AC 1V 201K 1 1 AC 200V 471K AC 220V 471K AC 1V AC 200V AC 220V 471K 751K 182K Notes : Disc size 5, 7,, 14, 20 : D series "D", S Series "S" 36 Application

37 Application Example of some different application Solenoid Line MODEL S BREAK CLUTCH 1 AC 1V AC 200V 201K 471K AC 220V AC 1V AC 200V AC 220V 471K 471K 751K 182K Heater control Line MODEL S HEATER DC 24V 390K 1 1 AC 1V AC 200V 201K 471K AC 220V 471K Sound output circuit 0 V SP 201K TV booster VHF MODEL 201K 471K 471K UHF V/30V K 5 751K 6 182K Notes : Disc size 5, 7,, 14, 20 : D series "D", S Series "S" Application 37

38 AMOTECH DISK VARISTOR Application Example of some different application Computer Line MODEL V 1 C COMPUTER AC 0V 201K 1 AC 1V 201K 221K AC 200V 471K AC 220V 471K Three - phase R S T N Line MODEL CIRCUIT AC 220V AC 380V AC 220V AC 380V 201K 471K 471K 470K 751K 182K Telephone line 471K Notes : Disc size 5, 7,, 14, 20 : D series "D", S 38 Application

39 Failure of ZnO Varistor Mode of Failure(V dc) ZnO Varistor are inherently regged and conservatively rated. Therefore, they exhibit a low failure rate. Nevertheless, the careful designer may wish to plan for potential failure modes and the resultant effects on circuitry being protected. Varistors initial fail in a short-circuit mode when subjected to surges beyond their peak current / energy ratings. They also short-circuit when operated at steady-state voltages well beyond their voltage ratings. This latter mode of stress may result in the eventual open-circuiting of the device due to melting of the lead solder joint. When the device fails in the shorts mode the current through the varistor becomes limited mainly by the cource impedance. Consequently, a large amount of energy can be introduced, causing mechanical rupture of the package accompanied by expulsion of package material in both solid and gaseous forms. Steps may be taken to minimize this potential hazard by the follow in techniques; Fusing the varistor to limit high currents. Protecting the surrounding circuitry by physical shielding. Protecting the circuit by locating the varistor away from other components. Fusing the Varistor Varistor fusing should be coordinated to select fuse that limits current below the level where varistor package damage could occur. The location of the fuse may be in the distribution line to the circuit or it may be in series with the varistor as shown in Figure1-1. Generally, fuse rather than breaker protection is preferred, Breaker trippping is too slow to prevent excessive fault energy from being applied. In high power industrial circuits the line currents are generally so high as to rule out the use of a line fuse for varistor protection. The fuse may not clear under a varistor fault condition and would allow varistor failure. In low power(5a~20a) applications it may be feasible to usd the line fuse, FL, only. Use of a line fuse, FL, rather than FV, does not present the problems of having the fuse are voltage adds to the varistor voltage, increasing the Vc, the transient clamp voltage. Since some fuses can have peak are voltages in excess of twice peak working voltage, fuse clearing can have a significant effect on protection levels. Another factor in the choice of location is the consequence of system interruption. Fuse location FL will cause a shutdown of the circuit shile location Fv will not. While the circuit can continue to operate when Fv clears, protection no longer is present. For this reason it is desirable to be able monitor the condition of FV. Selecting of the fuse For the selection of fuse, refer to Table 1-1. If the capacity of the fuse is the small, it will likely burn out with the application of the surge. Diameter Fuse capacity(a) 1~2 2~3 3~5 3~ 5~15 Table 1-1 Withstanding surge curve and recommened fuse capacity. Failure of ZnO Varistor 39