Varistor Products Line Voltage Operation, Radial Lead RoHS Pb LA Varistor Series ® D V E ® The LA Series of transient voltage surge suppressors are radial-lead varistors (MOVs) that are designed to be operated continuously across AC power lines. These UL recognized varistors require very little mounting space, and are offered in various standard lead form options. The LA Series varistors are available in four model sizes: 7mm, 10mm, 14mm and 20mm; and have a VM(AC)RMS voltage range from 130V to 1000V, and an energy absorption capability up to 360J. Some LA series model numbers are available with clamping voltage selections, designated by a model number suffix of either A or B. The “A” selection is the standard model; the “B” selection provides a lower clamping voltage. See LA 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. • Energy Absorption Capability (WTM) . . .. . . . . . . . . . . . . . . . . Up to 360J • Wide Operating Voltage Range VM(AC)RMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130V to 1000V • No Derating Up to 85oC Ambient • Available in Tape and Reel or Bulk Pack AGENCY APPROVALS: Standard and Lead-free parts recognized under the components program of Underwriters Laboratories. Certified by CSA, VDE and CECC. NEW LEAD-FREE AND RoHS COMPLIANT PARTS AVAILABLE AGENCY FILE NUMBERS: UL E75961, E56529 (Lead-free pending), E135010 (Lead-free pending); CSA LR91788; VDE 116895E; CECC 42201-006. ALSO SEE LITTELFUSE ULTRAMOV™ AND C-III VARISTOR SERIES 56 w w w. l i t t e l f u s e . c o m Varistor Products Line Voltage Operation, Radial Lead Pb RoHS LA Varistor Series Absolute Maximum Ratings For ratings of individual members of a series, see Device Ratings and Specifications chart UNITS V V A J C 0 C %/0C V 0 (Dielectric must withstand indicated DC voltage for one minute per MIL-STD 202, Method 301) Insulation Resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1000 MΩ CAUTION: Stresses above those listed in “Absolute 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 MAXIMUM RATING (85 oC) RoHS Pb LEAD-FREE AND RoHS COMPLIANT MODELS PART NUMBER BRANDING CONTINUOUS STANDARD MODELS PART NUMBER MODEL SIZE DISC DIA. BRANDING (mm) SPECIFICATIONS (25 oC) TRANSIENT V RMS VDC ENERGY 10 x 1000 s PEAK CURRENT 8 x 20 s VM(AC) VM(DC) WTM ITM (V) (V) (J) (A) VARISTOR VOLTAGE AT 1mA DC TEST CURRENT VNOM MIN VNOM MAX (V) MAXIMUM CLAMPING VOLTAGE 8 x 20 s TYPICAL CAPACITANCE f = 1MHz VC IPK C (V) (A) (pF) V130LA1P P1301 V130LA1 1301 7 130 175 11 1200 184 255 390 10 180 V130LA2P P1302 V130LA2 1302 7 130 175 11 1200 184 228 340 10 180 V130LA5P P1305 V130LA5 1305 10 130 175 20 2500 184 228 340 25 450 V130LA10AP P130L10 V130LA10A 130L10 14 130 175 38 4500 184 228 340 50 1000 V130LA20AP P130L20 V130LA20A 130L20 20 130 175 70 6500 184 228 340 100 1900 V130LA20BP P130L20B V130LA20B 130L20B 20 130 175 70 6500 184 220 325 100 1900 V140LA2P P1402 V140LA2 1402 7 140 180 12 1200 198 242 360 10 160 V140LA5P P1405 V140LA5 1405 10 140 180 22 2500 198 242 360 25 400 V140LA10AP P140L10 V140LA10A 140L10 14 140 180 42 4500 198 242 360 50 900 V140LA20AP P140L20 V140LA20A 140L20 20 140 180 75 6500 198 242 340 100 1750 V150LA1P P1501 V150LA1 1501 7 150 200 13 1200 212 284 430 10 150 V150LA2P P1502 V150LA2 1502 7 150 200 13 1200 212 268 395 10 150 V150LA5P P1505 V150LA5 1505 10 150 200 25 2500 212 268 395 25 360 V150LA10AP P150L10 V150LA10A 150L10 14 150 200 45 4500 212 268 395 50 800 V150LA20AP P150L20 V150LA20A 150L20 20 150 200 80 6500 212 268 395 100 1600 V150LA20BP P150L20B V150LA20B 150L20B 20 150 200 80 6500 212 243 360 100 1600 V175LA2P P1752 V175LA2 1752 7 175 225 15 1200 247 303 455 10 130 V175LA5P P1755 V175LA5 1755 10 175 225 30 2500 247 303 455 25 350 V175LA10AP P175L10 V175LA10A 175L10 14 175 225 55 4500 247 303 455 50 700 V175LA20AP P175L20 V175LA20A 175L20 20 175 225 90 6500 247 303 455 100 1400 V230LA4P P2304 V230LA4 2304 7 230 300 20 1200 324 396 595 10 100 V230LA10P P230L V230LA10 230L 10 230 300 35 2500 324 396 595 25 250 V230LA20AP P230L20 V230LA20A 230L20 14 230 300 70 4500 324 396 595 50 550 V230LA40AP P230L40 V230LA40A 230L40 20 230 300 122 6500 324 396 595 100 1100 w w w. l i t t e l f u s e . c o m 57 2 VARISTOR PRODUCTS LA SERIES Continuous: Steady State Applied Voltage: AC Voltage Range (VM(AC)RMS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130 to 1000 DC Voltage Range (VM(DC)) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175 to 1200 Transients: Peak Pulse Current (ITM) For 8/20µs Current Wave (See Figure 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1200 to 6500 Single Pulse Energy Range For 10/1000µs Current Wave (WTM ) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 to 360 Operating Ambient Temperature Range (TA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55 to 85 Storage Temperature Range (TSTG) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55 to 125 Temperature Coefficient ( V) of Clamping Voltage (VC) at Specified Test Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . <0.01 Hi-Pot Encapsulation (Isolation Voltage Capability) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2500 Varistor Products Line Voltage Operation, Radial Lead RoHS Pb LA Varistor Series Device Ratings and Specifications (Continued) o MAXIMUM RATING (85 C) CONTINUOUS TRANSIENT RoHS Pb LEAD-FREE AND RoHS COMPLIANT MODELS STANDARD MODELS V RMS VDC ENERGY 10 x 1000µs PEAK CURRENT 8 x 20µs V M(AC) VM(DC) WTM ITM (V) (V) (J) (A) SPECIFICATIONS (25oC) VARISTOR VOLTAGE AT 1mA DC TEST CURRENT MAXIMUM CLAMPING VOLTAGE 8 x 20µs TYPICAL CAPACITANCE f = 1MHz V250LA2P P2502 PART NUMBER V250LA2 2502 MODEL SIZE DISC DIA. (mm) 7 250 330 21 1200 354 473 730 10 V250LA4P P2504 V250LA4 2504 7 250 330 21 1200 354 429 650 10 90 V250LA10P P250L V250LA10 250L 10 250 330 40 2500 354 429 650 25 220 V250LA20AP P250L20 V250LA20A 250L20 14 250 330 72 4500 354 429 650 50 500 V250LA40AP P250L40 V250LA40A 250L40 20 250 330 130 6500 354 429 650 100 1000 V250LA40BP P250L40B V250LA40B 250L40B 20 250 330 130 6500 354 413 620 100 1000 V275LA2P P2752 V275LA2 2752 7 275 369 23 1200 389 515 775 10 80 V275LA4P P2754 V275LA4 2754 7 275 369 23 1200 389 473 710 10 80 V275LA10P P275L V275LA10 275L 10 275 369 45 2500 389 473 710 25 200 V275LA20AP P275L20 V275LA20A 275L20 14 275 369 75 4500 389 473 710 50 450 V275LA40AP P275L40 V275LA40A 275L40 20 275 369 140 6500 389 473 710 100 900 V275LA40BP P275L40B V275LA40B 275L40B 20 275 369 140 6500 389 453 680 100 900 V300LA2P P3002 V300LA2 3002 7 300 405 25 1200 420 565 870 10 70 V300LA4P P3004 V300LA4 3004 7 300 405 25 1200 420 517 775 10 70 V300LA10P P300L V300LA10 300L 10 300 405 46 2500 420 517 775 25 180 V300LA20AP P300L20 V300LA20A 300L20 14 300 405 77 4500 420 517 775 50 400 V300LA40AP P300L40 V300LA40A 300L40 20 300 405 165 6500 420 517 775 100 800 V320LA7P P3207 V320LA7 3207 7 320 420 25 1200 462 565 850 10 65 V320LA10P P320L V320LA10 320L 10 320 420 48 2500 462 565 850 25 170 V320LA20AP P320L20 V320LA20A 320L20 14 320 420 80 4500 462 565 850 50 380 V320LA40BP P320L40 V320LA40B 320L40 20 320 420 150 6500 462 540 810 100 750 V385LA7P P3857 V385LA7 3857 7 385 505 27 1200 558 682 1025 10 60 V385LA10P P385L V385LA10 385L 10 385 505 51 2500 558 682 1025 25 160 V385LA20AP P385L20 V385LA20A 385L20 14 385 505 85 4500 558 682 1025 50 360 V385LA40BP P385L40 V385LA40B 385L40 20 385 505 160 6500 558 682 1025 100 700 V420LA7P P4207 V420LA7 4207 7 420 560 30 1200 610 748 1120 10 55 V420LA10P P420L V420LA10 420L 10 420 560 55 2500 610 748 1120 25 140 V420LA20AP P420L20 V420LA20A 420L20 14 420 560 90 4500 610 748 1120 50 300 V420LA40BP P420L40 V420LA40B 420L40 20 420 560 160 6500 610 720 1060 100 600 V460LA7P P4607 V460LA7 4607 7 460 615 37 1200 702 858 1130 10 55 V480LA7P P4807 V480LA7 4807 7 480 640 35 1200 670 825 1240 10 50 V480LA10P P480L V480LA10 480L 10 480 640 60 2500 670 825 1240 25 120 V480LA40AP P480L40 V480LA40A 480L40 14 480 640 105 4500 670 825 1240 50 270 V480LA80BP P480L80 V480LA80B 480L80 20 480 640 180 6500 670 790 1160 100 550 V510LA10P P510L V510LA10 510L 10 510 675 63 2500 735 910 1350 25 100 V510LA40AP P510L40 V510LA40A 510L40 14 510 675 110 4500 735 910 1350 50 250 V510LA80BP P510L80 V510LA80B 510L80 20 510 675 190 6500 735 860 1280 100 500 V575LA10P P575L V575LA10 575L 10 575 730 65 2500 805 1000 1500 25 90 V575LA40AP P575L40 V575LA40A 575L40 14 575 730 120 4500 805 1000 1500 50 220 V575LA80BP P575L80 V575LA80B 575L80 20 575 730 220 6500 805 960 1410 100 450 V625LA10P P625L V625LA10 625L 10 625 825 67 2500 900 1100 1650 25 80 V625LA40AP P625L40 V625LA40A 625L40 14 625 825 125 4500 900 1100 1650 50 210 V625LA80BP P625L80 V625LA80B 625L80 20 625 825 230 6500 900 1100 1650 100 425 PART NUMBER 58 BRANDING BRANDING w w w. l i t t e l f u s e . c o m VNOM MIN VNOM MAX (V) VC IPK C (V) (A) (pF) 90 Varistor Products Line Voltage Operation, Radial Lead Pb LA Varistor Series Device Ratings and Specifications MAXIMUM RATING (85oC) RoHS Pb LEAD-FREE AND RoHS COMPLIANT MODELS PART NUMBER (Continued) CONTINUOUS STANDARD MODELS PART NUMBER BRANDING BRANDING MODEL SIZE DISC DIA. (mm) SPECIFICATIONS (25oC) TRANSIENT V RMS VDC ENERGY 10 x 1000µs PEAK CURRENT 8 x 20µs V M(AC) VM(DC) WTM ITM (V) (V) (J) (A) MAXIMUM CLAMPING VOLTAGE 8 x 20µs VARISTOR VOLTAGE AT 1mA DC TEST CURRENT VNOM MIN VNOM MAX (V) TYPICAL CAPACITANCE f = 1MHz VC IPK C (V) (A) (pF) V660LA10P P660L V660LA10 660L 10 660 850 70 2500 940 1210 1820 25 70 V660LA50AP P660L50 V660LA50A 660L50 14 660 850 140 4500 940 1210 1820 50 200 V660LA100BP P660L100 V660LA100B 660L100 20 660 850 250 6500 940 1100 1650 100 400 V1000LA80AP P1000L8 V1000LA80A 1000L80 14 1000 1200 220 4500 1425 1800 2700 50 130 V1000LA160B 1000L160 20 1000 1200 360 6500 1425 1600 2420 100 250 130 140 150 V1000LA160BP P1000L16 NOTE: Average power dissipation of transients not to exceed 0.25W, 0.4W, 0.6W or 1W for model sizes 7mm, 10mm, 14mm and 20mm, respectively. Power Dissipation Ratings 100 PERCENT OF RATED VALUE Should transients occur in rapid succession, the average power dissipation is 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.The operating values of a MOV need to be derated at high temperatures as shown in Figure 1. Because varistors only dissipate a relatively small amount of average power they are not suitable for repetitive applications that involve substantial amounts of average power dissipation. 90 80 70 60 50 40 30 20 10 0 -55 50 60 70 80 90 100 110 120 AMBIENT TEMPERATURE ( oC) PERCENT OF PEAK VALUE FIGURE 1. CURRENT, ENERGY AND POWER DERATING CURVE 100 O1 = Virtual Origin of Wave T = Time From 10% to 90% of Peak T1 = Virtual Front time = 1.25 • t T2 = Virtual Time to Half Value (Impulse Duration) Example: For an 8/20µs Current Waveform: 8µs = T1 = Virtual Front Time 20µs = T2 = Virtual Time to Half Value 90 50 10 O1 T TIME T1 T2 FIGURE 2. PEAK PULSE CURRENT TEST WAVEFORM w w w. l i t t e l f u s e . c o m 59 2 VARISTOR PRODUCTS RoHS Varistor Products Line Voltage Operation, Radial Lead RoHS Pb LA Varistor Series Transient V-I Characteristics Curves 4,000 6,000 5,000 MAXIMUM CLAMPINGVOLTAGE MODEL SIZE 7mm 130 TO 300VM(AC) RATING TA = -55oC TO 85oC MAXIMUM PEAK VOLTS (V) 3,000 3,000 2,000 MAXIMUM PEAK VOLTS (V) 4,000 2,000 V275LA2(P) V250LA2(P) 1,000 900 800 700 600 500 400 V300LA2(P) V150LA1(P) MAXIMUM CLAMPINGVOLTAGE MODEL SIZE 7mm 130 TO 300VM(AC) RATING TA = -55oC TO 85oC V300LA4(P) V275LA4(P) V250LA4(P) V230LA4(P) 1,000 900 800 700 600 500 400 300 V175LA2(P) V150LA2(P) V140LA2(P) V130LA2(P) 200 300 V130LA1(P) 200 10-3 10-2 10-1 100 101 102 PEAK AMPERES (A) 103 FIGURE 3. CLAMPING VOLTAGE FOR V130LA1(P) - V300LA2(P) 6,000 5,000 MAXIMUM CLAMPINGVOLTAGE 5,000 MODEL SIZE 7mm 320 TO 480VM(AC) RATING TA = -55oC TO 85oC 3,000 V460LA7(P) V480LA7(P) 1,000 V420LA7(P) V385LA7(P) V320LA7(P) 10-1 100 101 PEAK AMPERES (A) 102 103 MAXIMUM PEAK VOLTS (V) FIGURE 5. CLAMPING VOLTAGE FOR V320LA7(P) - V480LA7(P) 2,000 V625LA10(P) V660LA10(P) V300LA10(P) V320LA10(P) 1,000 500 V575LA10(P) V510LA10(P) V480LA10(P) V385LA10(P) 10-3 10-2 10-1 100 101 PEAK AMPERES (A) 102 103 104 FIGURE 7. CLAMPING VOLTAGE FOR V300LA10(P) - V660LA10(P) 60 103 104 1,000 900 800 700 600 500 400 V275LA10(P) V250LA10(P) V230LA10(P) V420LA10(P) V175LA5(P) V150LA5(P) V140LA5(P) V130LA5(P) 10-2 10-1 100 101 102 PEAK AMPERES (A) 103 104 FIGURE 6. CLAMPING VOLTAGE FOR V130LA5(P) - V420LA10(P) 6,000 5,000 4,000 MAXIMUM CLAMPINGVOLTAGE 5,000 MODEL SIZE 10mm 300 TO 660VM(AC) RATING TA = -55oC TO 85oC 3,000 2,000 200 10-3 104 MAXIMUM PEAK VOLTS (V) 10-2 100 101 102 PEAK AMPERES (A) 300 500 10-3 10-1 MAXIMUM CLAMPINGVOLTAGE MODEL SIZE 10mm 130 TO 420VM(AC) RATING TA = -55oC TO 85oC 4,000 3,000 2,000 10-2 FIGURE 4. CLAMPING VOLTAGE FOR V130LA2 (P) - V300LA4(P) MAXIMUM PEAK VOLTS (V) MAXIMUM PEAK VOLTS (V) 100 10-3 104 MAXIMUM CLAMPINGVOLTAGE MODEL SIZE 14mm 130 TO 320VM(AC) RATING TA = -55oC TO 85oC 3,000 2,000 V300LA20A(P) V320LA20A(P) 1,000 900 800 700 600 500 400 V275LA20A(P) V250LA20A(P) V230LA20A(P) V175LA10A(P) V150LA10A(P) V140LA10A(P) V130LA10A(P) 300 200 10-3 10-2 10-1 100 101 102 PEAK AMPERES (A) 103 104 FIGURE 8. CLAMPING VOLTAGE FOR V130LA10A(P) - V320LA20A w w w. l i t t e l f u s e . c o m Varistor Products Line Voltage Operation, Radial Lead RoHS Pb LA Varistor Series Transient V-I Characteristics Curves (Continued) 2,000 1,000 700 V575LA40A(P) V510LA40A(P) V480LA40A(P) V420LA20A(P) V385LA20A(P) 500 10-4 10 -3 10-2 10-1 100 101 PEAK AMPERES (A) 102 10 3 V150LA20A(P) V130LA20A(P) 10-2 10-1 100 101 102 PEAK AMPERES (A) 10 3 104 3,000 MAXIMUM CLAMPING VOLTAGE MODEL SIZE 20mm M(AC) RATING 2,000 140 TO 230V TA = -55oC TO 85oC MAXIMUM PEAK VOLTS (V) MAXIMUM PEAK VOLTS (V) V175LA20A(P) FIGURE 10. CLAMPING VOLTAGE FOR V130LA20A(P) - V275LA40A(P) MAXIMUM CLAMPING VOLTAGE MODEL SIZE 20mm 2,000 130 TO 275VM(AC) RATING TA = -55oC TO 85oC 300 2 V250LA40A(P) 200 10-3 104 3,000 400 V275LA40A(P) 400 300 FIGURE 9. CLAMPING VOLTAGE FOR V385LA20A(P) V1000LA80A(P) 1,000 900 800 700 600 500 1,000 900 800 700 600 500 VARISTOR PRODUCTS V660LA50A(P) 2,000 V625LA40A(P) 300 MAXIMUM CLAMPING VOLTAGE MODEL SIZE 20mm 130 TO 275VM(AC) RATING TA = -55oC TO 85oC V1000LA80A(P) MAXIMUM PEAK VOLTS (V) MAXIMUM PEAK VOLTS (V) 3,000 5,000 MAXIMUM CLAMPINGVOLTAGE MODEL SIZE 14mm 385 TO 1000VM(AC) RATING TA = -55oC TO 85oC 3,000 V275LA40B(P) V250LA40B(P) V150LA20B(P) 1,000 V230LA40A(P) 500 V140LA20A(P) 300 V130LA20B(P) 200 10-3 10-2 10-1 100 101 102 PEAK AMPERES (A) 10 3 104 FIGURE 11. CLAMPING VOLTAGE FOR V130LA20B(P) - V275LA40(P) 200 10-3 10-2 10-1 100 101 102 PEAK AMPERES (A) 10 3 104 FIGURE 12. CLAMPING VOLTAGE FOR V140LA20A(P) - V230LA40A(P) MAXIMUM PEAK VOLTS (V) 5,000 3,000 2,000 MAXIMUM CLAMPINGVOLTAGE MODEL SIZE 20mm 300 TO 1000VM(AC) RATING TA = -55oC TO 85oC V1000LA160B(P) V625LA80B(P) V660LA100B(P) V575LA80B(P) V510LA80B(P) V480LA80B(P) 1,000 500 V420LA40B(P) V385LA40B(P) V320LA40B(P) V300LA40A(P) 10-3 10-2 10-1 100 101 102 PEAK AMPERES (A) 10 3 104 FIGURE 13. CLAMPING VOLTAGE FOR V300LA40A - V1000LA160B 6 w w w. l i t t e l f u s e . c o m 61 Varistor Products Line Voltage Operation, Radial Lead RoHS Pb LA Varistor Series Pulse Rating Curves 2,000 5,000 1 MODEL SIZE 7mm V130LA1(P) - V480LA7(P) 1,000 200 102 100 50 20 10 INDEFINITE 5 2 1,000 103 104 105 106 10 SURGE CURRENT (A) SURGE CURRENT (A) 500 MODEL SIZE 10mm V130LA5(P) - V660LA10(P) 1 2,000 2 102 3 10 104 105 106 10 500 200 100 50 20 INDEFINITE 10 5 2 1 20 100 1,000 IMPULSE DURATION ( µs) 2 20 10,000 FIGURE 14. SURGE CURRENT RATING CURVES FOR V130LA1(P) - V480LA7(P) 100 1,000 IMPULSE DURATION ( µs) 10,000 FIGURE 15. SURGE CURRENT RATING CURVES FOR V130LA5(P) - V660LA10(P) V1000LA80A 5,000 1 2,000 2 1,000 10 MODEL SIZE 14mm V130LA10A(P) - V320LA20A(P) 102 3 10 104 105 106 500 SURGE CURRENT (A) SURGE CURRENT (A) 5,000 200 100 50 20 INDEFINITE 10 1 2,000 2 1,000 10 102 3 10 104 105 106 500 200 100 50 20 INDEFINITE 10 5 MODEL SIZE 14mm V385LA20A(P) - V1000LA80A(P) 5 2 20 100 1,000 IMPULSE DURATION ( µs) 2 20 10,000 100 1,000 IMPULSE DURATION ( µs) FIGURE 16. SURGE CURRENT RATING CURVES FOR V130LA10A(P) - V320LA20A(P) FIGURE 17. SURGE CURRENT RATING CURVES FOR V385LA20A(P) - V1000LA80A(P) 10,000 10,000 2 10 SURGE CURRENT (A) 2,000 1,000 500 MODEL SIZE 20mm V130LA20A(P) - V320LA40B(P) 102 3 10 104 105 106 2 10 2,000 200 100 50 20 INDEFINITE 10 1 5,000 SURGE CURRENT (A) 1 5,000 5 1,000 500 10,000 MODEL SIZE 20mm V385LA40B(P) - V1000LA160B(P) 102 3 10 104 105 106 200 100 50 20 INDEFINITE 10 5 2 2 1 1 20 100 1,000 IMPULSE DURATION ( µs) FIGURE 18. SURGE CURRENT RATING CURVES FOR V130LA20A(P) - V320LA40B(P) 10,000 20 100 1,000 IMPULSE DURATION ( µs) 10,000 FIGURE 19. SURGE CURRENT RATING CURVES FOR V385LA40B(P) - V1000LA160B(P) NOTE: If pulse ratings are exceeded, a shift of VN(DC) (at specified current) of more than ±10% could result. This type of shift, which normally results in a decrease of VN(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. 62 w w w. l i t t e l f u s e . c o m Varistor Products Line Voltage Operation, Radial Lead LA Varistor Series Pb Tape and Reel Specifications 7mm Devices 10, 14 and 20mm Devices P P2 P P2 DP DP DH DH DP DH DH C SEATING PLANE H1 C SEATING PLANE H1 E DP E W0 W0 H0 H0 W2 W1 2 W2 W1 ∆b ∆b W W ∆D0 ∆D0 P1 P1 t F t F P1 P0 Crimped Leads "LT" Crimped Leads "LT" P P2 DP P P2 E E DP DP DP DH DH DH DH H1 H1 W0 W2 W1 H W0 W2 W1 H ∆b ∆b W W ∆D0 ∆D0 P1 P1 t F t F P0 P0 Straight Leads "LS" Straight Leads "LS" P P2 P2 E DP E DP DP DH DP DH DH DH U H1 U H1 W0 W2 W1 Ho W0 W2 W1 Ho P ∆b ∆b W W ∆D0 ∆D0 P1 P1 F t P0 P0 Under-crimped Leads "LU" F t Under-crimped Leads "LU" w w w. l i t t e l f u s e . c o m 63 VARISTOR PRODUCTS RoHS Varistor Products Line Voltage Operation, Radial Lead RoHS Pb LA Varistor Series MODEL SIZE SYMBOL PARAMETER 7mm 10mm 14mm 12.7 ± 1.0 25.4 ± 1.0 25.4 ± 1.0 Pitch of Component P0 Feed Hole Pitch 12.7 ± 0.2 12.7 ± 0.2 12.7 ± 0.2 12.7 ± 0.2 P1 Feed Hole Center to Pitch 3.85 ± 0.7 8.85 ± 0.7 8.85 ± 0.7 8.85 ± 0.7 P2 Hole Center to Component Center 6.35 ± 0.7 12.7 ± 0.7 12.7 ± 0.7 12.7 ± 0.7 F Lead to Lead Distance 5.0 ± 0.8 7.5 ± 0.8 7.5 ± 0.8 7.5 ± 0.8 h Component Alignment 2.0 Max 2.0 Max 2.0 Max 25.4 ± 1.0 2.0 Max 18.0 + 1.0 18.0 - 0.5 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 W0 Hold Down Tape Width 12.0 ± 0.3 12.0 ± 0.3 12.0 ± 0.3 12.0 ± 0.3 W1 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 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 W2 Hold Down Tape Position H0 Seating Plane Height 16.0 ± 0.5 16.0 ± 0.5 16.0 ± 0.5 16.0 ± 0.5 H1 Component Height 32.0 Max 36.0 Max 40.0 Max 46.5 Max D0 Feed Hole Diameter 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 U Under-crimp Width 8.0 Max 8.0 Max Component Alignment 3o Max 1.00mm 3o Max 1.00mm 8.0 Max 3o Max 1.00mm 8.0 Max p NOTE: Dimensions are in mm. 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 undercrimped leads • 7mm parts are available on tape and reel up to 480 VAC only • 10mm parts are available on tape and reel up to 510 VAC only • 14mm and 20mm parts are available on tape and reel up to 550 VAC only 64 20mm P w w w. l i t t e l f u s e . c o m 3o Max Varistor Products Line Voltage Operation, Radial Lead Pb LA Varistor Series Tape and Reel Ordering Information Standard Bulk Pack Quantity Crimped leads are standard on LA types supplied in tape and reel and are denoted by the model letter “T”. Model letter “S” denotes straight leads and letter “U” denotes special under-crimped leads. STANDARD BULK PACK QUANTITY Example: STANDARD MODEL CRIMPED LEADS STRAIGHT LEADS UNDERCRIMPED LEADS V130LA2 V130LT2 V130LS2 V130LU2 VARISTOR VOLTAGE MODEL 7mm 10mm 14mm 130-275 1500 1000 700 500 300-460 1500 700 600 400 510-625 1500 700 500 400 VARISTOR MODEL SIZE 20mm VARISTOR MODEL SIZE 7mm 10mm 14mm 20mm VOLTAGE MODEL MIN MAX MIN MAX MIN MAX MIN MAX V130LAV320LA - 12 (0.472) - 16 (0.630) - 20 (0.787) - 26.5 (1.043) V385LAV1000LA - 13 (0.0512) - 17 (0.689) - 20.5 (0.807) - 28 (1.102) øD All - 9 (0.354) - 12.5 (0.492) - 17 (0.669) - 23 (0.906) e All 6.5 (0.256) 8.5 (0.335) 6.5 (0.256) 8.5 (0.335) 6.5 (0.256) (Note 2) 8.5 (0.335) (Note 2) e1 V130LAV320LA 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) V385AV1000LA 2.5 (0.098) 5.5 (0.217) 2.5 (0.098) 5.5 (0.217) 2.5 (0.098) 5.5 (0.217) 2.5 (0.098) 5.5 (0.217) V130LAV320LA - 5.6 (0.220) - 5.6 (0.220) - 5.6 (0.220) - 5.6 (0.220) V385LAV510LA - 7.3 (0.287) - 7.3 (0.287) - 7.3 (0.287) - 7.3 (0.287) V550LAV660LA - 8.3 (0.327) - 8.3 (0.327) - 8.3 (0.327) - 8.3 (0.327) V1000LA - - - - - 10.8 (0.425) - 10.8 (0.425) All (Note 3) 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) (Note 2) 0.86 (0.034) (Note 2) SYMBOL A E øb 4 (0.157) 6 (0.236) NOTES: 1. Dimensions in millimeters, inches in parentheses. 2. 10mm (9mm min, 11mm Max) ALSO AVAILABLE; See Additional Lead Style Options 3. 1000V parts supplied with lead wire of diameter 1.00 ± 0.05 (0.039 ± 0.002). w w w. l i t t e l f u s e . c o m 65 2 VARISTOR PRODUCTS RoHS Varistor Products Line Voltage Operation, Radial Lead RoHS Pb LA Varistor Series Additional Lead Style Options Radial lead types can be supplied with combination preformed crimp and trimmed leads. This option is supplied to the dimensions shown. *SEATING A PLANE LTRIM *Seating plane interpretation per IEC-717 CRIMPED AND TRIMMED LEAD VARISTOR MODEL SIZE 7mm SYMBOL MIN 14mm 20mm MAX MIN MAX MIN MAX MIN MAX 15 (0.591) - 19.5 (0.768) - 22.5 (0.886) - 29.0 (1.142) 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) A LTRIM 10mm - NOTE: Dimensions in millimeters, inches in parentheses. LA series varistors for Hi-Temperature operating conditions: • To order this crimped and trimmed lead style, standard radial type model numbers are changed by replacing the model letter “A” with “C”. Example: For crimped leads without trimming and any variations to the above, contact Littelfuse. • For 10/±1mm lead spacing on 20mm diameter models only; append standard model numbers by adding “X10”. • Phenolic Coated LA Series devices are available with improved maximum operating maximum temperature 125°C. • These devices also have improved temperature cycling performance capability. • Ratings and Specifications are as per standard LA Series except Hi-Pot encapsulation Isolation Voltage Capability = 500V. • To order: add X1347 to part number (e.g. V230LA20AX1347) • Marked identifier will contain 'P' to denote Phenolic. • These devices are not UL, CSA, VDE or CECC certified. • Contact factory for further details. Ordering Information LA series Varistors are shipped standard in bulk pack with straight leads and lead spacing outlined in the package dimensions on page 4-13. Contact your Littelfuse sales representative to discuss the non-standard options outlined below. Example: STANDARD CATALOG MODEL ORDER AS: V130LA20A V130LA20AX10 For Lead-free and RoHS compliant parts add the letter ‘P’ after the base part number and before any option as shown in the ordering example below. ex: V130LA2P V420LA20APX1347 Base Part # Other Options V XXX LA XX X P + Optional Suffix P: LEAD-FREE AND RoHS COMPLIANT OPTION CLAMP VOLTAGE VARIANT (Where Applicable) VARISTOR VM(AC) 130V to 1,000V SERIES DESIGNATOR/ LEAD STYLE DESIGNATOR LC = Crimped and Clipped LS = Straight LT = Crimped LU = Under Crimped 66 w w w. l i t t e l f u s e . c o m RELATIVE ENERGY INDICATOR (One or Two Digits)