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67 www.littelfuse.com 2 varistor products varistor products low to medum voltage, radial lead za varistor series the za series of transient voltage surge suppressors are radial-lead varistors (movs) designed for use in the protection of low and medium- voltage circuits and systems. typical applications include motor control, telecom, automotive systems, solenoid, and power supply circuits to protect circuit board components and maintain data integrity. these devices are available in five model sizes: 5mm, 7mm, 10mm, 14mm and 20mm, and feature a wide v dc voltage range of 5.5v to 615v. see za series device ratings and specifications table for part number and brand information. features ?lead-free and rohs compliant option available. please see the device and ratings specifications table for more information. ?wide operating voltage range v m(ac)rms ......... .4v to 460v ?dc voltage ratings . ............................ .5.5v to 615v ?no derating up to 85 o c ambient 5 model sizes available . ....5, 7, 10, 14, and 20mm ?radial-lead package for hard-wired or printed circuit board designs ?available in tape and reel or bulk pack ?standard lead form options agency approvals for standard parts: recognized under the components program of underwriters laboratories. cecc and vde certified. agency file numbers: ul e135010, ul e75961, vde 116895e, cecc 42201. agency approvals for lead-free and rohs compli- ant parts: recognized under the components program of underwriters laboratories. cecc and vde certified. agency file numbers: ul e135010, ul e75961 (selected parts recog- nized), vde 116895e, cecc 42201-006. v de new lead-free and rohs compliant parts available pb rohs
68 www.littelfuse.com varistor products za varistor series low to medum voltage, radial lead absolute maximum ratings for ratings of individual members of a series, see device ratings and specifications chart. continuous: steady state applied voltage: ac voltage range (v m(ac)rms ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 to 460 v dc voltage range (v m(dc) ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5 to 615 v transient: peak pulse current (i tm ) for 8/20? current wave (see figure 2). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 to 6500 a single pulse energy range (note 1) for 10/1000? current wave (w tm ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.1 to 52 j operating ambient temperature range (t a ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55 to85 o c storage temperature range (t stg ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55 to125 o c temperature coefficient ( v) of clamping voltage (v c ) at specified test current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . <0.01 %/ o c hi-pot encapsulation (isolation voltage capability) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2500 v (dielectric must withstand indicated dc voltage for one minute per mil-std 202, method 301) insulation resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1000 m ? caution: stresses above those listed in ?bsolute maximum ratings may cause permanent damage to the device. this is a stress only rating and operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. device ratings and specifications (note 1) za series units part number model size disc dia. (mm) branding maximum rating (85 o c) specifications (25 o c) continuous transient varistor volt- age at 1ma dc test current maximum clamping voltage 8 x 20 s typical capaci- tance f = 1mhz v rms v dc energy 10 x 1000 s peak current 8 x 20 s v m(ac) v m(dc) w tm i tm v nom min v nom max v c i pk c (v) (v) (j) (a) (v) (v) (a) (pf) v8za05 5 z08 4 5.5 0.1 50 6 11 30 1 1400 v8za1 7 08z1 4 5.5 0.4 100 6 11 22 2.5 3000 v8za2 10 08z2 4 5.5 0.8 250 6 11 20 5 7500 v12za05 5 z12 6 8 0.14 50 9 16 37 1 1200 v12za1 7 12z1 6 8 0.6 100 9 16 34 2.5 2500 v12za2 10 12z2 6 8 1.2 250 9 16 30 5 6000 v18za05 5 z18 10 14 0.17 100 14.4 21.6 36 1 1000 v18za1 7 18z1 10 14 0.8 250 14.4 21.6 36 2.5 2000 v18za2 10 18z2 10 14 1.5 500 14.4 21.6 36 5 5000 v18za3 14 18z3 10 14 3.5 1000 14.4 21.6 36 10 11000 v18za40 20 18z40 10 14 80 (note 2) 2000 14.4 (note 3) 21.6 37 20 22000 v22za05 5 z22 14 18 0.2 100 18.7 26 43 1 800 v22za1 7 22z1 14 18 0.9 250 18.7 26 43 2.5 1600 v22za2 10 22z2 14 18 2 500 18.7 26 43 5 4000 v22za3 14 22z3 14 18 4 1000 18.7 26 43 10 9000 v24za50 20 24z50 14 18 (note 4) 100 (note 2) 2000 19.2 (note 3) 26 43 20 18000 v27za05 5 z27 17 22 0.25 100 23 31.1 53 1 600 v27za1 7 27z1 17 22 1 250 23 31.1 53 2.5 1300 v27za2 10 27z2 17 22 2.5 500 23 31.1 53 5 3000 v27za4 14 27z4 17 22 5 1000 23 31.1 53 10 7000 v27za60 20 27z60 17 22 120 (note 2) 2000 23 (note 3) 31.1 50 20 13000 part number branding v8za05p pz08 v8za1p p08z1 v8za2p p08z2 v12za05p pz12 v12za1p p12z1 v12za2p p12z2 v18za05p pz18 v18za1p p18z1 v18za2p p18z2 v18za3p p18z3 v18za40p p18z40 v22za05p pz22 v22za1p p22z1 v22za2p p22z2 v22za3p p22z3 v24za50p p24z50 v27za05p pz27 v27za1p p27z1 v27za2p p27z2 v27za4p p27z4 v27za60p p27z60 lead-free and rohs compliant models standard models pb rohs see pa g e 70 for notes pb rohs
69 www.littelfuse.com 2 varistor products varistor products low to medum voltage, radial lead za varistor series device ratings and specifications (note 1) (continued) v33za05 5 z33 20 26 0.3 100 29.5 38 65 1 500 v33za1 7 33z1 20 26 1.2 250 29.5 36.5 65 2.5 1100 v33za2 10 33z2 20 26 3 500 29.5 36.5 65 5 2700 v33za5 14 33z5 20 26 6 1000 29.5 36.5 65 10 6000 v33za70 20 33z70 21 27 150 (note 2) 2000 29.5 (note 3) 36.5 58 20 13000 v36za80 20 36z80 23 31 160 (note 2) 2000 32 (note 3) 40 63 20 12000 v39za05 5 z39 25 31 0.3 100 35 46 79 1 500 v39za1 7 39z1 25 31 1.2 250 35 43 79 2.5 1100 v39za3 10 39z3 25 31 3 500 35 43 76 5 2700 v39za6 14 39z6 25 31 6 1000 35 43 76 10 6000 v39za20 20 39z20 25 31 20 2000 35 43 76 20 12000 v47za05 5 z47 30 38 0.4 100 42 55 93 1 400 v47za1 7 47z1 30 38 1.8 250 42 52 93 2.5 800 v47za3 10 47z3 30 38 4.5 500 42 52 93 5 2000 v47za7 14 47z7 30 38 8.8 1000 42 52 93 10 4500 v47za20 20 47z20 30 38 23 2000 42 52 93 20 11000 v56za05 5 z56 35 45 0.5 100 50 66 110 1 360 v56za2 7 56z2 35 45 2.3 250 50 62 110 2.5 700 v56za3 10 56z3 35 45 5.5 500 50 62 110 5 1800 v56za8 14 56z8 35 45 10 1000 50 62 110 10 3900 v56za20 20 56z20 35 45 30 2000 50 62 110 20 10000 v68za05 5 z68 40 56 0.6 100 61 80 135 1 300 v68za2 7 68z2 40 56 3 250 61 75 135 2.5 600 v68za3 10 68z3 40 56 6.5 500 61 75 135 5 1500 v68za10 14 68z10 40 56 13 1000 61 75 135 10 3300 v68za20 20 68z20 40 56 33 2000 61 75 135 20 10000 v82za05 5 z82 50 68 2 400 73 97 135 5 240 v82za2 7 82z2 50 68 4 1200 73 91 135 10 500 v82za4 10 82z4 50 68 8 2500 73 91 135 25 1100 v82za12 14 82z12 50 68 15 4500 73 91 145 50 2500 v100za05 5 z100 60 81 2.5 400 90 117 165 5 180 v100za3 7 100z 60 81 5 1200 90 110 165 10 400 v100za4 10 100z4 60 81 10 2500 90 110 165 25 900 v100za15 14 100z15 60 81 20 4500 90 110 175 50 2000 part number model size disc dia. (mm) branding maximum rating (85 o c) specifications (25 o c) continuous transient varistor volt- age at 1ma dc test current maximum clamping voltage 8 x 20 s typical capaci- tance f = 1mhz v rms v dc energy 10 x 1000 s peak current 8 x 20 s v m(ac) v m(dc) w tm i tm v nom min v nom max v c i pk c (v) (v) (j) (a) (v) (v) (a) (pf) v33za05p pz33 v33za1p p33z1 v33za2p p33z2 v33za5p p33z5 v33za70p p33z70 v36za80p p36z80 v39za05p pz39 v39za1p p39z1 v39za3p p39z3 v39za6p p39z6 v39za20p p39z20 v47za05p pz47 v47za1p p47z1 v47za3p p47z3 v47za7p p47z7 v47za20p p47z20 v56za05p pz56 v56za2p p56z2 v56za3p p56z3 v56za8p p56z8 v56za20p p56z20 v68za05p pz68 v68za2p p68z2 v68za3p p68z3 v68za10p p68z10 v68za20p p68z20 V82ZA05P pz82 v82za2p p82z2 v82za4p p82z4 v82za12p p82z12 v100za05p pz100 v100za3p p100z v100za4p p100z4 v100za15p p100z15 part number branding lead-free and rohs compliant models standard models pb rohs see pa g e 70 for notes pb rohs
70 www.littelfuse.com varistor products za varistor series low to medum voltage, radial lead device ratings and specifications (note1) (continued) v120za05 5 z120 75 102 3 400 108 138 205 5 140 v120za1 7 120z 75 102 6 1200 108 132 205 10 300 v120za4 10 120z4 75 102 12 2500 108 132 200 25 750 v120za6 14 120z6 75 102 22 4500 108 132 210 50 1700 v120za20 20 120z20 75 102 33 6500 108 132 210 100 1500 v150za05 5 z150 92 127 4 400 135 173 250 5 120 v150za1 7 z051 95 127 8 1200 135 165 250 10 250 v150za4 10 150z4 95 127 15 2500 135 165 250 25 600 v150za8 14 150z8 95 127 20 4500 135 165 250 50 1400 v150za20 20 150z20 95 127 45 6500 135 165 250 100 1000 v180za05 5 z180 110 153 5 400 162 207 295 5 100 v180za1 7 180z 115 153 10 1200 162 198 300 10 200 v180za5 10 180z5 115 153 18 2500 162 198 300 25 500 v180za10 14 180z10 115 153 35 4500 162 198 300 50 1100 v180za20 20 180z20 115 153 52 6500 162 198 300 100 2400 v205za05 5 z205 130 170 5.5 400 184 226 340 5 100 v220za05 5 z220 140 180 6 400 198 253 360 5 90 v240za05 5 z240 150 200 7 400 216 264 395 5 80 v270za05 5 z270 175 225 7.5 400 243 311 455 5 70 v330za05 5 z330 210 275 9 400 297 380 540 5 60 v360za05 5 z360 230 300 9.5 400 324 396 595 5 55 v390za05 5 z390 250 330 10 400 351 449 650 5 50 v430za05 5 z430 275 369 11 400 387 495 710 5 45 v470za05 5 z470 300 385 12 400 420 517 775 5 35 v620za05 5 z620 385 505 13 400 558 682 1025 5 33 v680za05 5 z680 420 560 14 400 610 748 1120 5 32 v715za05 5 z715 440 585 15.5 400 643 787 1180 5 31 v750za05 5 z750 460 615 17 400 675 825 1240 5 30 notes: 1. average power dissipation of transients not to exceed 0.2w, 0.25w, 0.4w, 0.6w or 1w for model sizes 5mm, 7mm, 10mm, 14mm and 20mm, respectively. 2. energy rating for impulse duration of 30ms minimum to one half of peak current (auto load dump). 3. 10ma dc test current. 4. also rated to withstand 24v for 5 minutes. 5. higher voltages available, contact littelfuse. ? recognized to ul1449, ?transient voltage surge suppressors? file #e75961. part number model size disc dia. (mm) branding maximum rating (85 o c) specifications (25 o c) continuous transient varistor volt- age at 1ma dc test current maximum clamping voltage 8 x 20 s typical capaci- tance f = 1mhz v rms v dc energy 10 x 1000 s peak current 8 x 20 s v m(ac) v m(dc) w tm i tm v nom min v nom max v c i pk c (v) (v) (j) (a) (v) (v) (a) (pf) v120za05 pp z120 v120za1 pp 120z v120za4 pp 120z4 v120za6 pp 120z6 v120za20 pp 120z20 v150za05 pp z150 v150za1 pp z051 v150za4 pp 150z4 ? v150za8 pp 150z8 v150za20 pp 150z20 v180za05 pp z180 v180za1 pp 180z v180za5 pp 180z5 v180za10 pp 180z10 v180za20 pp 180z20 v205za05 pp z205 ? v220za05 pp z220 ? v240za05 pp z240 ? v270za05 pp z270 ? v330za05 pp z330 ? v360za05 pp z360 ? v390za05 pp z390 ? v430za05 pp z430 ? v470za05 pp z470 ? v620za05 pp z620 ? v680za05 pp z680 v715za05 pp z715 v750za05 pp z750 part number branding lead-free and rohs compliant models standard models pb rohs pb rohs
71 www.littelfuse.com 2 varistor products varistor products low to medum voltage, radial lead za varistor series power dissipation ratings should transients occur in rapid succession, the average power dissipation required is simply the energy (watt-seconds) per pulse times the number of pulses per second. the power so developed must be within the specifications shown on the device ratings and specifications table for the specific device. furthermore, the operating values need to be derated at high temperatures as shown in figure 1. because varistors can only dissipate a relatively small amount of average power they are, therefore, not suitable for repetitive applications that involve substantial amounts of average power dissipation. transient v-i characteristics curves figure 1. current, energy and power derating curve 100 90 80 70 60 50 40 30 20 10 0 -55 50 60 70 80 90 100 110 120 130 140 150 ambient temperature ( o c) percent of rated value figure 2. peak pulse current test waveform 100 90 50 10 o 1 t t 1 t 2 time percent of peak value o 1 = virtual origin of wave t = time from 10% to 90% of peak t 1 = virtual front time = 1.25 t t 2 = virtual time to half value (impulse duration) example: for an 8/20 s current waveform: 8 s = t 1 = virtual front time 20 s = t 2 = virtual time to half value figure 3. clamping voltage for v8za05(p) - v68za05(p) 600 500 400 300 200 100 90 80 70 60 50 40 30 20 maximum peak volts (v) peak amperes (a) 10 -2 10 -1 10 0 10 1 10 2 10 3 max clamping voltage model size 5mm 8 to 68v n(dc) rating t a = -55 o c to 85 o c 10 v68za05(p) v56za05(p) v47za05(p) v39za05(p) v33za05(p) v27za05(p) v22za05(p) v18za05(p) v12za05(p) v8za05(p) 10 -3 figure 4. clamping voltage for v82za05(p) - v33za05(p) 2000 1000 500 200 maximum peak volts (v) peak amperes (a) 0.01 0.1 1 10 100 1000 100 0.001 0.0001 v100za05(p) v82za05(p) max clamping voltage model size 5mm 82 t o 330v n(dc) rating t a = -55 o c to 85 o c v330za05(p) v270za05(p) v240za05(p) v220za05(p) v205za05(p) v180za05(p) v150za05(p) v120za05(p) pb rohs
72 www.littelfuse.com varistor products za varistor series low to medum voltage, radial lead transient v-i characteristics curves (continued) figure 5. clamping voltage for v360za05(p) - v750za05(p) figure 6. clamping voltage for v8za1(p) - v68za2(p) figure 7. clamping voltage for v82za2(p) - v180za1(p) figure 8. clamping voltage for v8za2(p) - v68za3(p) figure 9. clamping voltage for v82za4(p) - v180za5(p) figure 10. clamping voltage for v18za3(p) - v68za10(p) 3000 2000 1000 500 maximum peak volts (v) peak amperes (a) 0.01 0.1 1 10 100 1000 0.001 0.0001 v750za05(p) v715za05(p) v680za05(p) v620za05(p) v470za05(p) v430za05(p) v390za05(p) v360za05(p) max clamping voltage model size 5mm 360 to 750v n(dc) rating t a = -55 o c to 85 o c 500 400 300 200 100 90 80 70 60 50 40 30 20 10 maximum peak volts (v) 10 -3 10 -2 10 -1 10 0 10 1 10 2 10 3 maximum clamping voltage 8 to 68v n(dc) rating t a = -55 o c to 85 o c peak amperes (a) v68za2(p) v56za2(p) v47za1(p) v39za1(p) v33za1(p) v27za1(p) v22za1(p) v12za1(p) v18za1(p) v8za1(p) model size 7mm maximum peak volts (v) peak amperes (a) 10 -2 10 -1 10 0 10 1 10 2 10 3 10 -3 maximum clamping voltage model size 7mm 82 to 180v n(dc) rating t a = -55 o c to 85 o c 4,000 3,000 2,000 1,000 900 800 700 600 500 400 300 200 100 10 4 v180za1(p) v150za1(p) v120za1(p) v100za3(p) v82za2(p) 500 400 300 200 100 90 80 70 60 50 40 30 20 10 maximum peak volts (v) 10 -3 10 -2 10 -1 10 0 10 1 10 2 10 3 peak amperes (a) v68za3(p) v56za3(p) v47za3(p) v39za3(p) v33za2(p) v27za2(p) v22za2(p) v18za2(p) v8za2(p) v12za2(p) maximum clamping voltage model size 10mm 8 to 68v n(dc) rating t a = -55 o c to 85 o c maximum peak volts (v) peak amperes (a) 10 -2 10 -1 10 0 10 1 10 2 10 3 10 -3 maximum clamping voltage model size 10mm 82 to 180v n(dc) rating t a = -55 o c to 85 o c 4,000 3,000 2,000 1,000 900 800 700 600 500 400 300 200 100 10 4 v180za5(p) v150za4(p) v120za4(p) v100za4(p) v82za4(p) 600 500 400 300 200 100 90 80 70 60 50 40 30 20 10 -3 10 -2 10 -1 10 0 10 1 10 2 10 3 peak amperes (a) maximum peak volts (v) v68za10(p) v56za8(p) v47za7(p) v39za6(p) v33za5(p) v27za4(p) v22za3(p) v18za3(p) maximum clamping voltage 18 to 68v n(dc) rating t a = -55 o c to 85 o c model size 14mm pb rohs
73 www.littelfuse.com 2 varistor products varistor products low to medum voltage, radial lead za varistor series transient v-i characteristics curves (continued) figure 11. clamping voltage for v82za12(p) - v180za10(p) figure 12. clamping voltage for v18za40(p) - v36za80(p) figure 13. clamping voltage for v39za20(p) - v180za20(p) maximum peak volts (v) peak amperes (a) 10 -2 10 -1 10 0 10 1 10 2 10 3 10 -3 maximum clamping voltage model size 14mm 82 to 180v n(dc) rating t a = -55 o c to 85 o c 4,000 3,000 2,000 1,000 900 800 700 600 500 400 300 200 100 10 4 v180za10(p) v150za8(p) v120za6(p) v100za15(p) v82za12(p) 300 200 100 90 80 70 60 50 40 30 20 maximum peak volts (v) peak amperes (a) 10 -2 10 -1 10 0 10 1 10 2 10 3 10 -3 10 4 maximum clamping voltage model size 20mm 18 to 36v n(dc) rating t a = -55 o c to 85 o c v36za80(p) v33za70(p) v27za60(p) v24za50(p) v18za40p(p) 10 -3 10 -2 10 -1 10 0 10 1 10 2 10 4 10 3 1,000 500 300 200 30 peak amperes (a) maximum peak volts (v) v56za20(p) v47za20(p) v39za20(p) maximum clamping voltage model size 20mm t a = -55 o c to 85 o c 39 to 180v m(ac) rating v180za20(p) v150za20(p) v120za20(p) 100 50 v68za20(p) pulse rating curves figure 14. surge current rating curves for v8za05 (p) figure 15. surge current rating curves for 50 20 10 5 2 1 0.5 0.2 0.1 surge current (a) 20 100 1,000 10,000 impulse duration ( s) 1 10 10 2 2 10 3 indefinite 10 4 10 5 10 6 model size 5mm v8za05(p) 100 50 20 10 2 1 0.5 0.2 0.1 surge current (a) 20 100 1,000 10,000 impulse duration ( s) indefinite 10 4 10 5 10 6 model size 5mm v12za05(p) - v68za05(p) 1 10 10 2 2 10 3 pb rohs
74 www.littelfuse.com varistor products za varistor series low to medum voltage, radial lead pulse rating curves (continued) figure 16. surge current rating curves for v82za05(p) - v750za05(p) figure 17. surge current rating curves for v8za1(p) - v12za1(p) figure 18. surge current rating curves for v18za1(p) - v68za2(p) figure 19. surge current rating curves for v82za2(p) - v180za1(p) figure 20. surge current rating curves for v8za2(p) - v127za2(p) figure 21. surge current rating curves for v18za2(p) - v68za3(p) 50 20 10 5 2 1 0.5 0.2 surge current (a) 20 100 1,000 10,000 impulse duration ( s) 1 10 10 2 2 10 3 indefinite 10 4 10 5 10 6 model size 5mm v82za05(p) - v750za05(p) 500 200 100 20 100 1,000 10,000 impulse duration ( s) surge current (a) 1 10 10 2 2 10 3 indefinite 10 4 10 5 10 6 200 100 50 20 10 5 2 1 0.5 0.2 model size 7mm v8za1(p) - v12za1(p) 20 100 1,000 10,000 impulse duration ( s) surge current (a) 1 10 10 2 2 10 3 indefinite 500 200 100 50 20 10 2 1 0.5 0.2 10 4 10 5 10 6 5 model size 7mm v18za1(p) - v68za2(p) 2,000 1,000 200 100 50 20 10 5 1 2 500 20 100 1,000 10,000 impulse duration ( s) surge current (a) 1 2 10 10 2 10 4 10 5 10 6 10 3 indefinite model size 7mm v82za2(p) - v180za1(p) 20 100 1,000 10,000 impulse duration ( s) surge current (a) 1 10 10 2 2 10 3 indefinite 500 200 100 50 20 10 2 1 0.5 0.2 10 4 10 5 10 6 5 model size 10mm v8za2(p) - v12za2(p) 1,000 500 100 50 20 10 5 1 2 200 20 surge current (a) 1 2 10 5 10 6 10 4 indefinite model size 10mm v18za2(p) - v68za3(p) 100 1,000 10,000 impulse duration ( s) 10 2 10 3 pb rohs
75 www.littelfuse.com 2 varistor products varistor products low to medum voltage, radial lead za varistor series pulse rating curves (continued) figure 22. surge current rating curves for v82za4(p) - v180za5(p) 5,000 2,000 1,000 500 200 100 50 20 10 5 2 20 100 1,000 10,000 impulse duration ( s) surge current (a) 1 10 10 2 2 10 3 indefinite 10 4 10 5 10 6 model size 10mm v82za4(p) - v180za5(p) figure 23. surge current rating curves for v18za3(p) - v68za10(p) 200 100 50 20 10 5 1 2 20 100 1,000 10,000 impulse duration ( s) surge current (a) 1 2 10 10 2 10 4 10 5 10 6 10 3 indefinite 1,000 500 model size 14mm v18za3(p) - v68za10(p) pb rohs
76 www.littelfuse.com varistor products za varistor series low to medum voltage, radial lead note: if pulse ratings are exceeded, a shift of v n(dc) (at specified current) of more then ?0% could result. this type of shift, which normally results in a decrease of v n(dc), may result in the device not meeting the original published specifications, but does not prevent the device from continuing to function, and to provide ample protection. pulse rating curves (continued) figure 24. surge current rating curves for v82za12(p) - v180za10(p) figure 25. surge current rating current for v18za40(p) - v68za20(p) figure 26. surge current rating curves for v120za20(p) - v180za20(p) 5,000 2,000 200 100 50 20 10 5 2 500 20 100 1,000 10,000 impulse duration ( s) surge current (a) 1 2 10 10 4 10 5 10 6 10 3 indefinite 1,000 10 2 model size 14mm v82za12(p) - v180za10(p) 2,000 200 100 50 20 10 5 2 500 20 100 1,000 10,000 impulse duration ( s) surge current (a) 1 2 10 1,000 10 2 10 3 10 4 10 5 10 6 indefinite model size 20mm v18za40(p) - v68za20(p) 10,000 1,000 100 20 impulse duration ( s) surge current (a) 5,000 10,000 2,000 500 100 20 10 2 1,000 200 50 1 5 1 2 10 10 2 10 3 10 4 10 5 10 6 indefinite model size 20mm v120za20(p) - v180za20(p) pb rohs
77 www.littelfuse.com 2 varistor products varistor products za varistor series low to medum voltage, radial lead tape and reel specifications crimped leads "zt" crimped leads "zt" straight leads "zs" straight leads "zs" under-crimped leads "zu" p1 p0 e dp dh dh w1 w f t w2 w0 p dp c ? b h 0 ? d0 h 1 seating plane p2 p1 p1 w0 e dp dh dh w1 w f t w2 p dp c ? b h 0 ? d0 h 1 seating plane p2 p0 dh e dh dp w1 w f t w2 p dp ? b h ? d0 h 1 p1 p2 w0 p1 p0 p2 dh e dh dp w1 w f t w2 w0 p dp ? b h ? d0 h 1 u p1 p0 p2 dh e dh dp w1 w f t w2 w0 p dp ? b ho ? d0 h 1 under-crimped leads "zu" p0 u dh e dh dp w1 w f t w2 p dp ? b ho ? d0 h 1 p2 w0 p1 5 and 7mm devices 10, 14 and 20mm devices pb rohs
78 www.littelfuse.com varistor products tape and reel data ?conforms to ansi and eia specifications ?can be supplied to iec publication 286-2 radial devices on tape are supplied with crimped leads, straight leads, or under- crimped leads 5mm parts are available on tape and reel up to 385 vac only note: leads are offset by dim e1 low to medum voltage, radial lead za varistor series symbol parameter model size 5mm 7mm 10mm 14mm 20mm p pitch of component 12.7 1.0 12.7 1.0 25.4 1.0 25.4 1.0 25.4 1.0 p 0 feed hole pitch 12.7 0.2 12.7 0.2 12.7 0.2 12.7 0.2 12.7 0.2 p 1 feed hole center to pitch 3.85 0.7 3.85 0.7 8.85 0.7 8.85 0.7 8.85 0.7 p 2 hole center to component center 6.35 1.0 6.35 1.0 12.7 0.7 12.7 0.7 12.7 0.7 f lead to lead distance 5.0 1.0 5.0 1.0 7.5 1.0 7.5 1.0 7.5 1.0 h component alignment 2.0 max 2.0 max 2.0 max 2.0 max 2.0 max w tape width 18.0 + 1.0 18.0 - 0.5 18.0 + 1.0 18.0 - 0.5 18.0 + 1.0 18.0 - 0.5 18.0 + 1.0 18.0 - 0.5 18.0 + 1.0 18.0 - 0.5 w 0 hold down tape width 12.0 0.3 12.0 0.3 12.0 0.3 12.0 0.3 12.0 0.3 w 1 hole position 9.0 + 0.75 9.0 - 0.50 9.0 + 0.75 9.0 - 0.50 9.0 + 0.75 9.0 - 0.50 9.0 + 0.75 9.0 - 0.50 9.0 + 0.75 9.0 - 0.50 w 2 hold down tape position 0.5 max 0.5 max 0.5 max 0.5 max 0.5 max h height from tape center to component base 18.0 + 2.0 18.0 - 0.0 18.0 + 2.0 18.0 - 0.0 18.0 + 2.0 18.0 - 0.0 18.0 + 2.0 18.0 - 0.0 18.0 + 2.0 18.0 - 0.0 h 0 seating plane height 16.0 0.5 16.0 0.5 16.0 0.5 16.0 0.5 16.0 0.5 h 1 component height 29.0 max 32.0 max 36.0 max 40.0 max 46.5 max d 0 feed hole diameter 4.0 0.2 4.0 0.2 4.0 0.2 4.0 0.2 4.0 0.2 t total tape thickness 0.7 0.2 0.7 0.2 0.7 0.2 0.7 0.2 0.7 0.2 u under-crimp width 8.0 max p component alignment 3 o max 3 o max 3 o max 3 o max 3 o max note: dimensions are in mm. 8.0 max 8.0 max 8.0 max 8.0 max pb rohs
79 www.littelfuse.com 2 varistor products varistor products low to medum voltage, radial lead za varistor series mechanical dimensions tape and reel ordering information crimped leads are standard on za types supplied in tape and reel and are denoted by the model letter ?? model letter ? denotes straight leads and letter ? denotes special under-crimped leads. example: shipping quantity standard model crimped leads straight leads under- crimped leads v18za3 v18zt3 v18zs3 v18zu3 size rms (max) voltage quantity per reel ? reel ? reel ? reel 5mm all 1000 1000 1000 7mm all 1000 1000 1000 10mm all 500 500 500 14mm < 300v 500 500 500 14mm 300v 500 500 400 20mm < 300v 500 500 500 20mm 300v 500 500 400 sym- bol v o lta g e model varistor model size 5mm 7mm 10mm 14mm 20mm min max min max min max min max min max a all - - 10 (0.394) - - 12 (0.472) - - 16 (0.630) - - 20 (0.787) - - 26.5 (1.043) ? d all - - 7 (0.276) - - 9 (0.354) - - 12.5 (0.492) - - 17 (0.669) - - 23 (0.906) eall4 (0.157) 6 (0.236) 4 (0.157) 6 (0.236) 6.5 (0.256) 8.5 (0.335) 6.5 (0.256) 8.5 (0.335) 6.5 (0.256) (note 6) 8.5 (0.335) (note 6) e 1 v8za- v56za 1 (0.039) 3 (0.118) 1 (0.039) 3 (0.118) 1 (0.039) 3 (0.118) 1 (0.039) 3 (0.118) 1 (0.039) 3 (0.118) v68za- v100za 1.5 (0.059) 3.5 (0.138) 1.5 (0.059) 3.5 (0.138) 1.5 (0.059) 3.5 (0.138) 1.5 (0.059) 3.5 (0.138) (0.059) (0.138) 1.5 3.5 v120za- v180za 1 (0.039) 3 (0.118) 1 (0.039) 3 (0.118) 1 (0.039) 3 (0.118) 1 (0.038) 3 (0.118) (0.038) (0.118) v205za- v750za 1.5 (0.059) 3.5 (0.138) - - - - - - - - - - - - - - - - e v8za- v56za - - 5 (0.197) - - 5 (0.197) - - 5 (0.197) - - 5 (0.197) - - 5 (0.197) v68za- v100za - - 5.6 (0.220) - - 5.6 (0.220) - - 5.6 (0.220) - - 5.6 (0.220) - - 5.6 (0.220) v120za- v180za - - 5 (0.197) - - 5 (0.197) - - 5 (0.197) - - 5 (0.197) - - 5 (0.197) v205za- v750za - - 5.6 (0.220) - - - - - - - - - - - - - - - - ? b all 0.585 (0.023) 0.685 (0.027) 0.585 (0.023) 0.685 (0.027) 0.76 (0.030) 0.86 (0.034) 0.76 (0.030) 0.86 (0.034) 0.76 (0.030) 0.86 (0.034) notes: dimensions in millimeters, inches in parentheses. 6. 10mm also available; see additional lead style options. 7. v24za50(p) and v24zc50(p) only supplied with lead spacing of 6.35mm 0.5mm (0.25 0.0196) dimension e = 5.85 min. does not apply to t&r parts. 13 pb rohs
80 w w w . l i t t e l f u s e . c o m v aristor pr oducts za v aristor series lo w to medum v oltage, radial lead additional lead style options radial lead types can be supplied with combination pref or med cr imp and tr immed leads . this option is supplied to the dimensions sho wn. ? to order this cr imped and tr immed lead style , standard radial type model numbers are changed by replacing the model letter ?za? with ?zc?. this option is supplied in b ulk only . example: f or cr imped leads without tr imming and an y va r itions to the abo ve , contact littelfuse . ? f or 10/1mm lead spacing on 20mm diameter models only; append stan - dard model n umbers by adding ?x10?. example: *sea ting plane interpre ta tion per iec-717 crimped and trimmed lead st and ard ca t alog model order as: v18za3 v18zc3 va rist or va rist or nominal vo lta ge (v nom ) (one , tw o or three digits) series designa t or/ lead style designa to r zc = cr imped and clipped zs = straight zt = cr imped zu = under cr imped v xxx za xx rela tive energy indica to r (one or tw o digits) p: lead-free and roh s compliant option p other options base pa rt # or dering inf ormation za ser ies va r istors are shipped standard in b ulk pac k with straight leads and lead spacing outlined in the pac kage dimensions on page 4-13. contact y our littelfuse sales representativ e to discuss the non-standard options outlined belo w. f or lead-free and rohs compliant par ts add the letter ? p ? after the base par t number and bef ore an y option as sho wn in the order ing e xample belo w. ex : v8za40px10 v150za20px1347 za series va risto rs f or hi-t emperature operating conditions : ? phenolic coated za ser ies de vices are av ailab le with impro v ed maxi - mum operating maximum temperature 125 c. ? these de vices also ha ve impro v ed temperature cycling perf or mance capability . ? ratings and specifications are as per standard za ser ies e xcept hi- p ot encapsulation isolation v oltage capability = 500v . ? to order : add x1347 to par t number (e .g. v22za3x1347) ? these de vices are not ul, csa, vde or cecc cer tified. ? contact f actor y f or fur ther details . symbol v arist or model size 5mm 7mm 10mm 14mm 20mm min max min max min max min max min max a - - 13.0 (0.512) - - 15 (0.591) - - 19.5 (0.768) - - 22.5 (0.886) - - 29.0 (1.142) l trim 2.41 (0.095) 4.69 (0.185) 2.41 (0.095) 4.69 (0.185) 2.41 (0.095) 4.69 (0.185) 2.41 (0.095) 4.69 (0.185) 2.41 (0.095) 4.69 (0.185) no te: dimensions in millimeters , inches in parentheses . st and ard ca t alog model order as: v18za40 v18za40x10 pb rohs

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