Varistor Products Radial Lead Varistors > LA Series RoHS LA Varistor Series Description The LA Series of transient voltage surge suppressors are radial leaded 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. Agency Approvals Agency Agency File Number E320116, E56529, E135010 • Lead–free, HalogenFree and RoHS compliant. LR91788 42201-006 • 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 Absolute Maximum Ratings • For ratings of individual members of a series, see Device Ratings and Specifications chart Continuous LA Series Units Steady State Applied Voltage: AC Voltage Range (VM(AC)RMS) 130 to 1000 V DC Voltage Range (VM(DC)) 175 to 1200 V 1200 to 6500 A Transients: Peak Pulse Current (ITM) For 8/20μs Current Wave (See Figure 2) Single Pulse Energy Range For 10/1000μs Current Wave (WTM) 11 to 360 J Operating Ambient Temperature Range (TA) -55 to +85 O Storage Temperature Range (TSTG) -55 to +125 O C C Temperature Coefficient (aV) of Clamping Voltage (VC) at Specified Test Current <0.01 %/OC Hi-Pot Encapsulation (COATING Isolation Voltage Capability) (Dielectric must withstand indicated DC voltage for one minute per MIL-STD 202, Method 301) 2500 V COATING 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. ©2010 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/la.html for current information. LA Varistor Series Revision: August 4, 2010 LA Series Features 116895 Varistor Products Radial Lead Varistors > LA Series LA Series Ratings & Specifications Maximum Rating (85°C) Continuous Transient Part Number V130LA1P V130LA2P V130LA5P V130LA10AP V130LA20AP V130LA20BP V140LA2P V140LA5P V140LA10AP V140LA20AP V150LA1P V150LA2P V150LA5P V150LA10AP V150LA20AP V150LA20BP V175LA2P V175LA5P V175LA10AP V175LA20AP V230LA4P V230LA10P V230LA20AP V230LA40AP V250LA2P V250LA4P V250LA10P V250LA20AP V250LA40AP V250LA40BP V275LA2P V275LA4P V275LA10P V275LA20AP V275LA40AP V275LA40BP V300LA2P V300LA4P V300LA10P V300LA20AP V300LA40AP V320LA7P V320LA10P V320LA20AP V320LA40BP V385LA7P V385LA10P V385LA20AP Branding P1301 P1302 P1305 P130L10 P130L20 P130L20B P1402 P1405 P140L10 P140L20 P1501 P1502 P1505 P150L10 P150L20 P150L20B P1752 P1755 P175L10 P175L20 P2304 P230L P230L20 P230L40 P2502 P2504 P250L P250L20 P250L40 P250L40B P2752 P2754 P275L P275L20 P275L40 P275L40B P3002 P3004 P300L P300L20 P300L40 P3207 P320L P320L20 P320L40 P3857 P385L P385L20 Model Size Disc Dia. (mm) 7 7 10 14 20 20 7 10 14 20 7 7 10 14 20 20 7 10 14 20 7 10 14 20 7 7 10 14 20 20 7 7 10 14 20 20 7 7 10 14 20 7 10 14 20 7 10 14 Peak Energy 10 Current 8 x 1000μs x 20μs VRMS VDC VM(AC) VM(DC) WTM ITM (V) 130 130 130 130 130 130 140 140 140 140 150 150 150 150 150 150 175 175 175 175 230 230 230 230 250 250 250 250 250 250 275 275 275 275 275 275 300 300 300 300 300 320 320 320 320 385 385 385 (V) 175 175 175 175 175 175 180 180 180 180 200 200 200 200 200 200 225 225 225 225 300 300 300 300 330 330 330 330 330 330 369 369 369 369 369 369 405 405 405 405 405 420 420 420 420 505 505 505 (J) 11 11 20 38 70 70 12 22 42 75 13 13 25 45 80 80 15 30 55 90 20 35 70 122 21 21 40 72 130 130 23 23 45 75 140 140 25 25 46 77 165 25 48 80 150 27 51 85 (A) 1200 1200 2500 4500 6500 6500 1200 2500 4500 6500 1200 1200 2500 4500 6500 6500 1200 2500 4500 6500 1200 2500 4500 6500 1200 1200 2500 4500 6500 6500 1200 1200 2500 4500 6500 6500 1200 1200 2500 4500 6500 1200 2500 4500 6500 1200 2500 4500 Specifications (25°C) Varistor Maximum Typical Voltage at Clamping Capaci1mA Voltage tance f = DC Test 8 x 20 μs 1MHz Current VNOM VNOM VC IPK C Min Max (V) (V) (V) (A) (pF) 184 255 390 10 180 184 228 340 10 180 184 228 340 25 450 184 228 340 50 1000 184 228 340 100 1900 184 220 325 100 1900 198 242 360 10 160 198 242 360 25 400 198 242 360 50 900 198 242 340 100 1750 212 284 430 10 150 212 268 395 10 150 212 268 395 25 360 212 268 395 50 800 212 268 395 100 1600 212 243 360 100 1600 247 303 455 10 130 247 303 455 25 350 247 303 455 50 700 247 303 455 100 1400 324 396 595 10 100 324 396 595 25 250 324 396 595 50 550 324 396 595 100 1100 354 473 730 10 90 354 429 650 10 90 354 429 650 25 220 354 429 650 50 500 354 429 650 100 1000 354 413 620 100 1000 389 515 775 10 80 389 473 710 10 80 389 473 710 25 200 389 473 710 50 450 389 473 710 100 900 389 453 680 100 900 420 565 870 10 70 420 517 775 10 70 420 517 775 25 180 420 517 775 50 400 420 517 775 100 800 462 565 850 10 65 462 565 850 25 170 462 565 850 50 380 462 540 810 100 750 558 682 1025 10 60 558 682 1025 25 160 558 682 1025 50 360 ©2010 Littelfuse, Inc. LA Varistor Series Revision: August 4, 2010 Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/la.html for current information. Varistor Products Radial Lead Varistors > LA Series Maximum Rating (85°C) Continuous Transient Part Number Branding Model Size Disc Dia. (mm) Peak Energy 10 Current 8 x 1000μs x 20μs VRMS VDC VM(AC) VM(DC) WTM ITM (A) 6500 1200 2500 4500 6500 1200 2500 4500 6500 1200 2500 4500 6500 2500 4500 6500 2500 4500 6500 2500 4500 6500 2500 4500 Specifications (25°C) Varistor Maximum Typical Voltage at Clamping Capaci1mA Voltage tance f = DC Test 8 x 20 μs 1MHz Current VNOM VNOM VC IPK C Min Max (V) (V) (V) (A) (pF) 558 682 1025 100 700 610 748 1120 10 55 610 748 1120 25 140 610 748 1120 50 300 610 720 1060 100 600 640 790 1190 10 55 640 790 1190 25 120 640 790 1190 50 280 640 756 1110 100 560 670 825 1240 10 50 670 825 1240 25 120 670 825 1240 50 270 670 790 1160 100 550 735 910 1350 25 100 735 910 1350 50 250 735 860 1280 100 500 805 1000 1500 25 90 805 1000 1500 50 220 805 960 1410 100 450 900 1100 1650 25 80 900 1100 1650 50 210 900 1100 1650 100 425 990 1240 1875 25 65 990 1240 1875 50 190 V385LA40BP V420LA7P V420LA10P V420LA20AP V420LA40BP V460LA7P V460LA10P V460LA20AP V460LA40BP V480LA7P V480LA10P V480LA40AP V480LA80BP V510LA10P V510LA40AP V510LA80BP V575LA10P V575LA40AP V575LA80BP V625LA10P V625LA40AP V625LA80BP V680LA10P V680LA80AP P385L40 P4207 P420L P420L20 P420L40 P4607 P460L P460L20 P460L40 P4807 P480L P480L40 P480L80 P510L P510L40 P510L80 P575L P575L40 P575L80 P625L P625L40 P625L80 P680L P680L80 20 7 10 14 20 7 10 14 20 7 10 14 20 10 14 20 10 14 20 10 14 20 10 14 (V) 385 420 420 420 420 460 460 460 460 480 480 480 480 510 510 510 575 575 575 625 625 625 680 680 (V) 505 560 560 560 560 615 615 615 615 640 640 640 640 675 675 675 730 730 730 825 825 825 875 875 (J) 160 30 55 90 160 37 56 100 170 35 60 105 180 63 110 190 65 120 220 67 125 230 75 145 V680LA100BP P680L100 20 680 875 260 6500 990 1130 1700 100 380 V660LA10P V660LA50AP V660LA100BP V1000LA80AP V1000LA160BP P660L P660L50 P660L100 P1000L8 P1000L16 10 14 20 14 20 660 660 660 1000 1000 850 850 850 1200 1200 70 140 250 220 360 2500 4500 6500 4500 6500 940 940 940 1425 1425 1210 1210 1100 1800 1600 1820 1820 1650 2700 2420 25 50 100 50 100 70 200 400 130 250 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. Phenolic Coating Option -- LA Series Varistors for Hi-Temperature Operating Conditions: • 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. • These devices are not UL, CSA, VDE or CECC certified. • To order: add X1347 to end of part number (e.g. V230LA20APX1347) • Product Marking: LF 9 P175P10 Lead-Free, YYWW Halogen-Free & RoHS Compliant Indicator Pholenic Coated Option Identifier ©2010 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/la.html for current information. LA Varistor Series Revision: August 4, 2010 LA Series LA Series Ratings & Specifications (Continued...) Varistor Products Radial Lead Varistors > LA Series Peak Pulse Current Test Waveform Power Dissipation Ratings PERCENT OF PEAK 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 the diagram below. 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. 100 90 50 10 O1 Current Energy and Power Derating Curve TIME T1 Figure 2 T2 01 = Virtual Origin of Wave T = Time from 10% to 90% of Peak T1 = Rise Time = 1.25 x T T2 = Decay Time Example - For an 8/20 μs Current Waveform: 8μs = T1 = Rise Time 20μs = T2 = Decay Time 100 PERCENT OF RATED VALUE T 90 80 70 60 50 40 30 20 10 0 -55 50 60 70 80 90 100 110 120 AMBIENT TEMPERATURE ( oC) 130 140 150 Figure 1 ©2010 Littelfuse, Inc. LA Varistor Series Revision: August 4, 2010 Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/la.html for current information. Varistor Products Radial Lead Varistors > LA Series Transient V-I Characteristics Curves Pulse Rating Curves Maximum Clamping Voltage for 7mm Parts Repetitive Surge Capability for 7mm Parts V130LA1(P) - V480LA7(P) V130LA1(P) - V300LA2(P) 6,000 5,000 V275LA2(P) V250LA2(P) V300LA2(P) 300 10 -2 10 2 100 50 20 10 INDEFINITE 2 V130LA1(P) 200 10 -3 10 3 10 4 10 5 10 6 10 200 5 V150LA1(P) MODEL SIZE 7mm V130LA1(P) - V480LA7(P) 2 500 2,000 1,000 900 800 700 600 500 400 1 1,000 SURGE CURRENT (A) 3,000 MAXIMUM PEAK VOLTS (V) 2,000 MAXIMUM CLAMPING VOLTAGE MODEL SIZE 7mm 130 TO 300VM(AC) RATING TA = -55o C TO 85o C 4,000 10 -1 Figure 3 10 0 10 1 10 2 PEAK AMPERES (A) 10 3 10 4 1 20 Figure 4 100 1,000 IMPULSE DURATION ( μs) 10,000 V130LA2(P) - V300LA4(P) 4,000 MAXIMUM PEAK VOLTS (V) 2,000 MAXIMUM CLAMPING VOLTAGE MODEL SIZE 7mm 130 TO 300VM(AC) RATING TA = -55o C TO 85o C V300LA4(P) V275LA4(P) V250LA4(P) V230LA4(P) LA Series 3,000 1,000 900 800 700 600 500 400 300 V175LA2(P) V150LA2(P) V140LA2(P) V130LA2(P) 200 100 10 -3 10 -2 10 -1 Figure 5 10 0 10 1 PEAK AMPERES (A) 10 2 10 3 10 4 MAXIMUM PEAK VOLTS (V) V320LA7(P) - V480LA7(P) MAXIMUM CLAMPING VOLTAGE 5,000 MODEL SIZE 7mm 320 TO 480VM(AC) RATING TA = -55o C TO 85o C 3,000 V460LA7(P) V480LA7(P) 2,000 1,000 V420LA7(P) V385LA7(P) V320LA7(P) 500 Figure 6 10 -3 10 -2 10 -1 10 0 10 1 PEAK AMPERES (A) 10 2 10 3 10 4 ©2010 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/la.html for current information. LA Varistor Series Revision: August 4, 2010 Varistor Products Radial Lead Varistors > LA Series Transient V-I Characteristics Curves (Continued...) Pulse Rating Curves (Continued...) Maximum Clamping Voltage for 10mm Parts Repetitive Surge Capability for 10mm Parts V130LA5(P) - V420LA10(P) 6,000 5,000 2,000 1,000 V275LA10(P) V250LA10(P) V230LA10(P) V420LA10(P) V175LA5(P) 500 10 -2 Figure 7 10 0 10 1 10 2 PEAK AMPERES (A) 10 3 10 4 10 2 3 10 10 4 10 5 10 6 10 100 50 20 10 10 -1 2 200 V150LA5(P) V140LA5(P) V130LA5(P) 300 200 10 -3 MODEL SIZE 10mm V130LA5(P) - V680LA10(P) 1 2,000 SURGE CURRENT (A) 3,000 1,000 900 800 700 600 500 400 5,000 MAXIMUM CLAMPING VOLTAGE MODEL SIZE 10mm 130 TO 420VM(AC) RATING TA = -55o C TO 85o C 4,000 MAXIMUM PEAK VOLTS (V) V130LA5(P) - V680LA10(P) INDEFINITE 5 2 20 Figure 8 100 1,000 IMPULSE DURATION ( μs) 10,000 MAXIMUM PEAK VOLTS (V) V300LA10(P) - V680LA10(P) MAXIMUM CLAMPING VOLTAGE 5,000 MODEL SIZE 10mm 300 TO 680VM(AC) RATING TA = -55o C TO 85o C 3,000 2,000 V680LA10(P) V625LA10(P) V660LA10(P) V300LA10(P) V320LA10(P) 1,000 500 Figure 9 V575LA10(P) V510LA10(P) V480LA10(P)/ V460LA10(P) V385LA10(P) 10 -3 10 -2 10 -1 10 0 10 1 PEAK AMPERES (A) 10 2 10 3 10 4 ©2010 Littelfuse, Inc. LA Varistor Series Revision: August 4, 2010 Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/la.html for current information. Varistor Products Radial Lead Varistors > LA Series Transient V-I Characteristics Curves (Continued...) Pulse Rating Curves (Continued...) Maximum Clamping Voltage for 14mm Parts Repetitive Surge Capability for 14mm Parts V130LA10A(P) - V320LA20A V130LA10A(P) - V320LA20A(P) 2,000 V300LA20A(P) V320LA20A(P) V275LA20A(P) V250LA20A(P) V230LA20A(P) 10 10 -2 10 -1 10 0 10 1 10 2 PEAK AMPERES (A) 10 3 100 50 20 Figure 12 10-3 2 20 100 1,000 IMPULSE DURATION ( μs) 5,000 1 V1000LA80A(P) 10-2 10-1 100 101 PEAK AMPERES (A) 102 103 2,000 2 1,000 10 SURGE CURRENT (A) V680LA80A(P) V575LA40A(P) V510LA40A(P) V480LA40A(P)/V460LA20A(P) V420LA20A(P) V385LA20A(P) 10-4 5 10,000 V385LA20A(P) - V1000LA80A(P) 1,000 500 INDEFINITE Figure 11 V660LA50A(P) 2,000 V625LA40A(P) 700 10 2 3 10 10 4 10 5 10 6 200 10 4 V385LA20A(P) V1000LA80A(P) 5,000 MAXIMUM CLAMPING VOLTAGE MODEL SIZE 14mm 385 TO 1000VM(AC) RATING TA = -55o C TO 85o C 3,000 MODEL SIZE 14mm V130LA10A(P) - V320LA20A(P) 500 V150LA10A(P) V140LA10A(P) V130LA10A(P) Figure 10 MAXIMUM PEAK VOLTS (V) 1,000 10 300 300 2 V175LA10A(P) 200 10 -3 1 2,000 10 2 3 10 10 4 10 5 10 6 500 200 100 50 20 10 INDEFINITE 5 2 20 104 Figure 13 ©2010 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/la.html for current information. MODEL SIZE 14mm V385LA20A(P) - V1000LA80A(P) LA Series 3,000 1,000 900 800 700 600 500 400 5,000 MAXIMUM CLAMPING VOLTAGE MODEL SIZE 14mm 130 TO 320VM(AC) RATING TA = -55o C TO 85o C SURGE CURRENT (A) MAXIMUM PEAK VOLTS (V) 6,000 5,000 4,000 100 1,000 IMPULSE DURATION ( μs) 10,000 LA Varistor Series Revision: August 4, 2010 Varistor Products Radial Lead Varistors > LA Series Transient V-I Characteristics Curves (Continued...) Pulse Rating Curves (Continued...) Maximum Clamping Voltage for 20mm Parts V130LA20A(P) - V275LA40A(P) V300LA40A - V1000LA160B 5,000 3,000 MAXIMUM PEAK VOLTS (V) 2,000 1,000 900 800 700 600 500 V275LA40A(P) V250LA40A(P) 400 300 MAXIMUM PEAK VOLTS (V) MAXIMUM CLAMPING VOLTAGE MODEL SIZE 20mm 130 TO 275VM(AC) RATING TA = -55o C TO 85o C V175LA20A(P) MAXIMUM CLAMPING VOLTAGE MODEL SIZE 20mm 300 TO 1000VM(AC) RATING TA = -55o C TO 85o C 3,000 V1000LA160B(P) V680LA100B(P) V625LA80B(P) V660LA100B(P) 2,000 V575LA80B(P) V510LA80B(P) V480LA80B(P)/ V460LA40B(P) 1,000 V420LA40B(P) V385LA40B(P) V320LA40B(P) V300LA40A(P) V150LA20A(P) V130LA20A(P) 500 200 10-3 10-2 10-1 Figure 14 100 101 102 PEAK AMPERES (A) 103 10-3 104 10-2 10-1 100 101 102 PEAK AMPERES (A) Figure 15 103 104 V130LA20B(P) - V275LA40(P) Repetitive Surge Capability for 20mm Parts 3,000 V130LA20A(P) - V320LA40B(P) 10,000 1 5,000 1,000 900 800 700 600 500 400 300 2 10 2,000 SURGE CURRENT (A) MAXIMUM PEAK VOLTS (V) MAXIMUM CLAMPING VOLTAGE MODEL SIZE 20mm 2,000 130 TO 275VM(AC) RATING TA = -55o C TO 85o C V275LA40B(P) V250LA40B(P) V150LA20B(P) V130LA20B(P) 200 10-3 10-2 10-1 100 101 102 PEAK AMPERES (A) Figure 16 103 1,000 500 MODEL SIZE 20mm V130LA20A(P) - V320LA40B(P) 10 2 3 10 10 4 10 5 10 6 200 100 50 20 INDEFINITE 10 5 104 2 1 V130LA20A(P) - V275LA40A(P) 20 100 Figure 18 1,000 IMPULSE DURATION (μs) 10,000 3,000 V385LA40B(P) - V1000LA160B(P) 10,000 1 5,000 2 10 2,000 1,000 V230LA40A(P) 500 V140LA20A(P) 300 200 Figure 17 10-3 10-2 10-1 100 101 102 PEAK AMPERES (A) 103 SURGE CURRENT (A) MAXIMUM PEAKVOLTS (V) MAXIMUM CLAMPING VOLTAGE MODEL SIZE 20mm M(AC) RATING 2,000 140 TO 230V TA = -55o C TO 85o C 1,000 500 MODEL SIZE 20mm V385LA40B(P) - V1000LA160B(P) 10 2 3 10 10 4 10 5 10 6 200 100 50 20 INDEFINITE 10 5 104 2 1 20 Figure 19 100 1,000 IMPULSE DURATION ( μs) 10,000 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. ©2010 Littelfuse, Inc. LA Varistor Series Revision: August 4, 2010 Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/la.html for current information. Varistor Products Radial Lead Varistors > LA Series Wave Solder Profile Non Lead–free Profile Lead–free Profile 300 300 250 TEMPERATURE (ºC) 250 200 150 100 50 200 150 100 50 0 0 0 0.5 1 Figure 20 1.5 2 2.5 3 3.5 4 0 0.5 1 1.5 Figure 21 TIME(MINUTES) 2 2.5 3 3.5 4 TIME(MINUTES) Physical Specifications Environmental Specifications Lead Material Tin–Coated Copper Wire Operating Ambient Temperature Range -55°C to +85°C Soldering Characteristics Solderability per MIL–STD–202, Method 208E Storage Temperature Range -55°C to +125°C Insulating Material Cured, flame retardant epoxy polymer meets UL94V–0 requirements Humidity Aging +85°C, 85% RH, 1000 hours +/-10% typical voltage change Device Labeling Marked with LF, voltage, UL/CSA logos, and date code Thermal Shock +85°C to -40°C 5 times +/-10% typical voltage change Solvent Resistance MIL–STD–202, Method 215F Moisture Sensitivity Level 1, J–STD–020C ©2010 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/la.html for current information. LA Varistor Series Revision: August 4, 2010 LA Series TEMPERATURE (ºC) Maximum Wave 260C Maximum Wave 240C Varistor Products Radial Lead Varistors > LA Series Product Dimensions (mm) *SEATING PLANE ATRIM LTRIM CRIMPED AND TRIMMED LEAD 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. *Seating plane interpretation per IEC-717 Dimension A ØD e e1 E 7mm Size 10mm Size 14mm Size 20mm Size VRMS Voltage Model Min. mm (in) Max. mm (in) Min. mm (in) Max. mm (in) Min. mm (in) Max. mm (in) Min. mm (in) Max. mm (in) V130LA- - 12 - 16 - 20 - 26.5 (1.043) V320LA - (0.472) - (0.630) - (0.787) - V385LA- - 13 - 17 - 20.5 - 28 V1000LA - (0.0512) - (0.689) - (0.807) - (1.102) All - 9 (0.354) - 12.5 (0.492) - 17 (0.669) - 23 (0.906) 8.5 (0.335) 6.5 (0.256) (Note 2) 8.5 (Note 2) All 4 (0.157) 6 (0.236) 6.5 (0.256) 8.5 (0.335) 6.5 (0.256) V130LA- 1.5 3.5 1.5 3.5 1.5 3.5 1.5 3.5 V320LA (0.059) (0.138) (0.059) (0.138) (0.059) (0.138) (0.059) (0.138) V385LA- 2.5 5.5 2.5 5.5 2.5 5.5 2.5 5.5 V1000LA (0.098) (0.217) (0.098) (0.217) (0.098) (0.217) (0.098) (0.217) V130LA- - 5.6 - 5.6 - 5.6 - 5.6 V320LA - (0.220) - (0.220) - (0.220) - (0.220) V385LA- - 7.3 - 7.3 - 7.3 - 7.3 V510LA - (0.287) - (0.287) - (0.287) - (0.287) V550LA- - 8.3 - 8.3 - 8.3 - 8.3 V680LA - (0.327) - (0.327) - (0.327) - (0.327) - - - 10.8 (0.425) - 10.8 (0.425) 0.86 (0.034) 0.76 (0.030) (Note 2) 0.86 (0.034) (Note 2) - 29.0 (1.142) 2.41 (0.095) 4.69 (0.185) V1000LA - - Øb All (Note 3) 0.585 (0.023) 0.685 (0.027) 0.76 (0.030) 0.86 (0.034) 0.76 (0.030) ATRIM All - 15 (0.591) - 19.5 (0.768) - LTRIM All 2.41 (0.095) 4.69 (0.185) 2.41 (0.095) 4.69 (0.185) 2.41 (0.095) 22.5 (0.886) (NOTE 4) 4.69 (0.185) 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) 4. 'A' Max. for V1000LC80A (P) = 24.00 (0.945”) ©2010 Littelfuse, Inc. LA Varistor Series Revision: August 4, 2010 Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/la.html for current information. Varistor Products Radial Lead Varistors > LA Series Tape and Reel Specifications (Dimensions presented on following page.) 7mm Devices 10, 14 and 20mm Devices CRIMPED LEADS "LT" CRIMPED LEADS "LT" P P2 P2 E DP DH DH C SEATING PLANE H1 W0 H0 DP DH C SEATING PLANE E DP DH W0 W2 W1 W2 W1 Db H0 Db W W DD0 DD0 P1 P1 t F P0 STRAIGHT LEADS "LS" P P2 t F P1 STRAIGHT LEADS "LS" P P2 E DP E DP DP DP DH DH DH DH LA Series H1 P DP H1 H1 W0 W2 W1 H W0 W2 W1 H Db Db W W DD0 DD0 P1 P1 t F t F P0 P0 UNDER-CRIMPED LEADS "LU" P P2 UNDER-CRIMPED LEADS "LU" E DP P2 E DP DP DH DH DH DH U H1 U H1 W0 W2 W1 Ho P DP W0 W2 W1 Ho Db Db W W DD0 DD0 P1 F t P1 F t P0 P0 ©2010 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/la.html for current information. LA Varistor Series Revision: August 4, 2010 Varistor Products Radial Lead Varistors > LA Series Tape and Reel Specifications (continued) • • • • • • 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 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 Symbol Model Size Description P Pitch of Component 7mm 10mm 14mm 20mm 12.7 +/- 1.0 25.4 +/- 1.0 25.4 +/- 1.0 25.4 +/- 1.0 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 W Tape Width W0 Hold Down Tape Width W1 Hole Position W2 Hold Down Tape Position 2.0 Max 2.0 Max 2.0 Max 2.0 Max 18.0 +1.0 / -0.5 18.0 +1.0 / -0.5 18.0 +1.0 / -0.5 18.0 +1.0 / -0.5 12.0 +/- 0.3 12.0 +/- 0.3 12.0 +/- 0.3 12.0 +/- 0.3 9.0 +0.75 / -0.50 9.0 +0.75 / -0.50 9.0 +0.75 / -0.50 9.0 +0.75 / -0.50 0.5 Max 0.5 Max 0.5 Max 0.5 Max 18.0 +2.0 / -0.0 18.0 +2.0 / -0.0 18.0 +2.0 / -0.0 18.0 +2.0 / -0.0 H Height from Tape Center to Component Base 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 P Component Alignment 8.0 Max 8.0 Max 8.0 Max 8.0 Max 3° Max 1.00mm 3° Max 1.00mm 3° Max 1.00mm 3° Max NOTE: Dimensions are in mm. Standard Bulk Pack Quantity Standard Bulk Pack Quantity Varistor Voltage Model 130-275 Varistor Model Size 7mm 10mm 14mm 20mm 1500 1000 700 500 300-460 1500 1000 600 400 510-625 1500 1000 500 400 660 N/A 1000 500 400 680 N/A 1000 400 300 1000 N/A N/A 300 200 ©2010 Littelfuse, Inc. LA Varistor Series Revision: August 4, 2010 Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/la.html for current information. Varistor Products Radial Lead Varistors > LA Series Part Numbering System OPTION CODES BASE PART CODES (See notes below) (See Ratings & Specifications tables and notes below) V XXXX LA XX X P XXXXX See OPTIONS CODES notes below For “VARISTOR” V M(AC) (Three or four digits -- 130V to 1,000V) For standard parts, use the BASE PART designator only. For parts with non-standard options (such as additional form, packaging and lead space options), use BASE PART + OPTION CODE. OPTION CODE items are subject to availability and minimum order requirements. Please contact a Littelfuse products representative for additional information or questions SERIES + PACKAGING / LEAD STYLE DESIGNATOR (See BASE PART CODES notes below) LA = Bulk Pack / Straight Leads (standard) LC = Bulk Pack / Crimped and Trimmed Leads LS = Tape and Reel / Straight Leads LT = Tape and Reel / Crimped Leads LU = Tape and Reel / Under-Crimped Leads RELATIVE ENERGY INDICATOR (One or Two Digits) CLAMP VOLTAGE VARIANT (One digit, where applicable) LA Series LEAD-FREE, HALOGEN-FREE AND RoHS COMPLIANT INDICATOR Ordering Notes: BASE PART CODES: OPTION CODES: Series + Packaging / Lead Style Designators: X10: 10mm lead spacing option -- Ordering examples: Straight Lead Bulk Pack (standard) Straight Lead Tape & Reel Crimped Lead Tape & Reel Crimped & Trimmed Lead Bulk Pack UnderCrimp Lead Tape & Reel V130LA2P V130LS2P V130LT2P V130LC2P V130LU2P For 10 (-/+1) mm lead spacing (available on 20mm diameter models only), append standard model BASE PART number with "X10." Example: Standard Model Order As V130LA20AP V130LA20APX10 X2855: Nickel Barrier coated wire option -Crimped leads are standard on LA Series varistors supplied in tape and reel, denoted with "LT." For crimped leads without trimming and any varitions other than that described above, please contact Littelfuse. Littelfuse LA Series varistors are shipped standard in bulk pack with straight leads and lead spacing outlined in the Package Dimensions section of this data sheet. Contact your Littelfuse sales representative to discuss non-standard options. All standard parts use Tin–coated Copper wire. Nickel Barrier coated wire is available as an option, consisting of Copper wire with a flashing of Nickel followed by a top coating of Tin. To order append standard model BASE PART number with "X2855." Example: Standard Model Order As V130LA20AP V130LA20APX2855 X1347: Hi-Temperature phenolic coating option -Phenolic Coated LA Series devices are available with improved maximum operating maximum temperature of 125°C. To order, add X1347 to end of part number (Example: V230LA20APX1347). For additional information please refer to the section labeled "Phenolic Coating Option" on the third page of this document under the "Electrical Characteristics" table. ©2010 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/la.html for current information. LA Varistor Series Revision: August 4, 2010