90 www.littelfuse.com varistor products high energy industrial ha varistor series ha series transient surge suppressors are industrial high energy metal-oxide varistors (movs). they are designed to provide secondary surge protection in the outdoor and service entrance environment (distribution panels) of buildings, and also in industrial applications for motor controls and power supplies used in the oil-drilling, mining, and transportation fields. the design of the ha series of metal oxide varistors provide rigid terminals for screw mounting. also available in a clipped lead version for through hole board placement or to accommodate soldered leads - designation ?c? see ratings and specifications table for part number and brand information. features ?wide operating voltage range v m(ac)rms .................................. .110v to 750v ?two disc sizes available . .................... 32mm and 40mm ?high energy absorption capability ...............................w tm = 170j to 1050j ?high peak pulse current capability,. ..........................i tm = 25,000a to 40,000a ?rigid terminals for secure mounting ?available in trimmed version for through hole board mounting - designation ?c ?no derating up to 85 o c ambient agency approvals: recognized under the components program of underwriters laboratories. certified by csa. agency file numbers: ul e75961, csa lr91788. also see hb34 series
91 www.littelfuse.com varistor products 2 varistor products high energy industrial ha varistor series 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 ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110 to 750 v dc voltage range (v m(dc) ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 148 to 970 v transient: peak pulse current (i tm ) for 8/20? current wave (see figure 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25,000 to 40,000 a single pulse energy range for 2ms current square wave (w tm ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 170 to 1050 j operating ambient temperature range (t a ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55 to 85 o c storage temperature range (t stg ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55 to 125 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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1000m ? 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 ha series units part number and device branding maximum ratings (85 o c) specifications (25 o c) continuous transient varistor voltage at 1ma dc test current maximum clamping voltage (v c ) at 200a (8/20 s) typical capacitance at f = 1mhz v rms v dc energy (2ms) peak current (8/20 s) v m(ac) v m(dc) w tm i tm min v n(dc) max v c c (v) (v) energy (a) (v) (v) (v) (v) (pf) v131ha32 v131ha40 130 130 175 175 200 270 25000 40000 184 184 200 200 228 228 350 345 4700 10000 v151ha32 v151ha40 150 150 200 200 220 300 25000 40000 212 212 240 240 268 268 410 405 4000 8000 v251ha32 v251ha40 250 250 330 330 330 370 25000 40000 354 354 390 390 429 429 650 630 2500 5000 v181ha32 v181ha40 180 180 240 240 240 330 25000 40000 254 254 282 282 310 310 475 468 3200 6800 v201ha32 v201ha40 200 200 265 265 260 350 25000 40000 283 283 314 314 345 345 540 533 3180 6350 v271ha32 v271ha40 275 275 369 369 360 400 25000 40000 389 389 430 430 473 473 710 690 2200 4500 v301ha32 v301ha40 300 300 410 410 370 430 25000 40000 433 433 478 478 526 526 795 780 2050 4100 v321ha32 v321ha40 320 320 420 420 390 460 25000 40000 462 462 510 510 561 561 845 825 1900 3800 v331ha32 v331ha40 330 330 435 435 385 475 25000 40000 467 467 519 519 570 570 860 843 1870 3750 v351ha32 v351ha40 350 350 460 460 390 500 25000 40000 495 495 550 550 604 604 910 894 1800 3600 note: average power dissipation of transients not to exceed 2.0w per varistor 1. 40ka capability depends on applications rated up to 97vrms. 30ka applies if >97 vrms. 2. 40ka capability depends on applications rated up to 115vrms. 30ka applies if >115 vrms. 3. 40ka capability depends on applications rated up to 123vrms. 30ka applies if >123 vrms. 1. 40ka capability depends on applications rated up to 132vrms. 30ka applies if >132vrms. 1 v111ha32 v111ha40 110 110 148 148 160 220 25000 40000 156 156 173 173 190 190 293 288 5450 11600 1 2 v141ha32 v141ha40 140 140 188 188 210 290 25000 40000 198 198 220 220 248 248 380 375 4230 9000 3
92 www.littelfuse.com varistor products ha varistor series high energy industrial part number and device branding maximum ratings (85 o c) specifications (25 o c) continuous transient varistor voltage at 1ma dc test current maximum clamping voltage (v c ) at 200a (8/20 s) typical capacitance at f = 1mhz v rms v dc energy (2ms) peak current (8/20 s) v m(ac) v m(dc) w tm i tm min v n(dc) max v c c (v) (v) energy (a) (v) (v) (v) (v) (pf) v391ha32 v391ha40 385 385 510 510 395 550 25000 40000 545 545 604 604 663 663 1020 1000 1750 3500 v421ha32 v421ha40 420 420 560 560 400 600 25000 40000 610 610 680 680 748 748 1120 1100 1500 3000 v441ha32 v441ha40 440 440 585 585 420 630 25000 40000 622 622 691 691 759 759 1200 1147 1450 2900 v481ha32 v481ha40 480 480 640 640 450 650 25000 40000 670 670 750 750 825 825 1290 1230 1300 2700 v511ha32 v511ha40 510 510 675 675 500 700 25000 40000 735 735 820 820 910 910 1355 1295 1200 2500 v551ha32 v551ha40 550 550 710 710 530 755 25000 40000 778 778 864 864 949 949 1515 1430 1190 2390 v571ha32 v571ha40 575 575 730 730 550 770 25000 40000 805 805 910 910 1000 1000 1570 1480 1100 2200 v661ha32 v661ha40 660 660 850 850 600 900 25000 40000 940 940 1050 1050 1160 1160 1820 1720 1000 2000 v681ha32 v681ha40 680 680 875 875 610 925 25000 40000 962 962 1068 1068 1173 1173 1830 1780 850 1900 v751ha32 v751ha40 750 750 970 970 700 1050 25000 40000 1080 1080 1200 1200 1320 1320 2050 2000 800 1800 device ratings and specifications
100 1000 10000 1 0 0 0 0 0.001 0.01 0.1 1 10 100 1000 10000 100000 maximum clamping voltage ha40 series 110 to 750v ac rating ta = -55 c to 85c c u r r e n t - ( a ) vol tage (v) v751 v571 v551 v511 v481 v441 v421 v391 v351 v111 v131 v141 v151 v681 v331 v321 v301 v271 v251 v201 v181 v661 93 www.littelfuse.com varistor products 2 varistor products ha varistor series high energy industrial power dissipation ratings should transients occur in rapid succession, the average power dissipa- tion 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 for average power dissipation. transient v-i characteristics curves 100 90 80 70 60 50 40 30 20 10 0 -55 50 60 70 80 90 100 110 120 130 140 150 percent of rated value ambient temperature ( o c) figure 1. current, energy and power derating curve figure 2. peak pulse current 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 100 1000 10000 0.001 0.01 0.1 1 10 100 1000 10000 100000 current ( a ) voltage (v) ta = -55 c to 85c v681ca32 v751ca32 v481ca32 v441ca32 v421ca32 v391ca32 v571ca32 v661ha32 v551ca32 v511ca32 v301ca32 v331ca32 v321ca32 v351ca32 v271ca32 v251ca32 v201ca32 v181ca32 v151ca32 v141ca32 v131ca32 c111ca32 maximum clamping voltage ha32 series 110 to 750v ac rating figure 3. maximum clamping voltage (v111ha32 - v751ha32) figure 4. maximum clamping voltage (v111ha40 - v751ha40) current (a)
94 www.littelfuse.com varistor products high energy industrial ha varistor series dhbxtt1 s max max min nom nom max offset ha32 35.5 52.00 3.0 25 9.3 10.4 depends on device voltage (see table 2) ha40 42.5 57.00 3.0 25 9.3 10.4 oa max 4.2 4.2 dhbxtr s c max max min nom nom max offset hc32 35.5 52.00 5.0 25 9.30 1.0 depends on device voltage (see table 4) hc40 42.5 57.00 5.0 25 9.30 1.0 voltage thickness ? dimension ? ( 1mm) ha32 ha40 ha32 ha40 v111 - v351 9.00 9.00 3.90 3.90 v391 - v511 11.00 11.00 2.60 2.60 v551 - v751 13.00 13.00 1.00 1.00 table 2. ha series maximum thickness and terminal offsets (dimensions in millimeters) () voltage thickness ? dimension ? c ( 1mm) hc32 hc40 hc32 hc40 v111 - v351 9.00 9.00 6.00 6.00 v391 - v511 11.00 11.00 7.30 8.10 v551 - v751 13.00 13.00 8.90 10.00 table 4. hc series maximum thickness and terminal offsets (dimensions in millimeters) ordering information varistor v m(ac) first two signi?ant digits disc size (mm) vxxxhaxx series designator ha or hc v m(ac) decade multiplier pulse rating curves figure 5. surge current rating curves for v111ha32 - v751ha32 disc size 32mm v111ha32 - v751ha32 50,000 20,000 10,000 5,000 2,000 1,000 500 200 100 50 20 10 20 100 1,000 10,000 surge current (a) impulse duration ( s) 10 2 1 indefinite 10 2 10 3 10 4 10 5 10 6 figure 7. surge current rating curves for v111ha40 - v751ha40 disc size 40mm v111ha40 - v751ha40 50,000 20,000 10,000 5,000 2,000 1,000 500 200 100 50 20 10 20 100 1,000 10,000 surge current (a) impulse duration ( s) 2 1 indefinite 10 2 10 3 10 4 10 5 10 6 10 mechanical dimensions table 1. ha series outline specifications (dimensions in millimeters) table 3. hc series outline specifications (dimensions in millimeters)
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