V275LA20C

Varistor Products Radial Lead Varistors > C-III series RoHS C-III Varistor Series Description The C-III Series of Metal-Oxide Varistors (MOVs) are specifically designed for applications requiring high surge energy absorption ratings and superior multiple pulse absorption rating. This is achieved through a special dielectric material formulation which also results in higher repetitive surge ratings than other MOV types. The C-III Series is primarily intended for use in AC line Transient Voltage Surge Suppressor (TVSS) product environment and other similar applications requiring high transient energy and peak current capability in a relatively small package size. Agency Approvals Features Agency File Number t
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Wide operating voltage range VM(AC)RMS 130V to 680V t
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DIBSU Continuous C-III Series Units 130 to 660 V 3500 to 9000 A Steady State Applied Voltage: DC Voltage Range (VM(AC)RMS) Transients: Single-Pulse Peak Current (ITM) 8/20μs Wave (See Peak Pulse Current Test Waveform) Single-Pulse Energy Range (WTM) 2ms Rectangular Wave 40 to 530 J Operating Ambient Temperature Range (TA) -55 to +85 ºC Storage Temperature Range (TSTG) -55 to +125 ºC Temperature Coefficient (aV) of Clamping Voltage (VC) at Specified Test Current C-III series C-III Series Ratings Lead–free and RoHS Compliant Models Part Number V130LA5CP V130LA10CP V130LA20CP V130LA20CPX325 V140LA5CP V140LA10CP V140LA20CP V140LA20CPX340 V150LA5CP V150LA10CP V150LA20CP V150LA20CPX360 V175LA5CP V175LA10CP V175LA20CP V175LA20CPX425 V230LA10CP V230LA20CP V230LA40CP V230LA40CPX570 V250LA10CP V250LA20CP V250LA40CP V250LA40CPX620 V275LA10CP V275LA20CP V275LA40CP V275LA40CPX680 V300LA10CP V300LA20CP V300LA40CP V300LA40CPX745 V320LA10CP V320LA20CP V320LA40CP V320LA40CPX810 V385LA20CP V385LA40CP V420LA20CP V420LA40CP V460LA40CP V480LA80CP V510LA80CP V550LA80CP V575LA80CP V625LA80CP V660LA80CP V680LA100CP C-III Varistor Series Branding P130L5C P130L10C P130L20C P130X325 P140L5C P140L10C P140L20C P140X340 P150L5C P150L10C P150L20C P150X360 P175L5C P175L10C P175L20C P175X425 P230L10C P230L20C P230L40C P230X570 P250L10C P250L20C P250L40C P250X620 P275L10C P275L20C P275L40C P275X680 P300L10C P300L20C P300L40C P300X745 P320L10C P320L20C P320L40C P320X810 P385L20C P385L40C P420L20C P420L40C P460L40C P480L80C P510L80C P550L80C P575L80C P625L80C P660L80C P680L100C Standard Models Part Number V130LA5C V130LA10C V130LA20C V130LA20CX325 V140LA5C V140LA10C V140LA20C V140LA20CX340 V150LA5C V150LA10C V150LA20C V150LA20CX360 V175LA5C V175LA10C V175LA20C V175LA20CX425 V230LA10C V230LA20C V230LA40C V230LA40CX570 V250LA10C V250LA20C V250LA40C V250LA40CX620 V275LA10C V275LA20C V275LA40C V275LA40CX680 V300LA10C V300LA20C V300LA40C V300LA40CX745 V320LA10C V320LA20C V320LA40C V320LA40CX810 V385LA20C V385LA40C V420LA20C V420LA40C V460LA40C V480LA80C V510LA80C V550LA80C V575LA80C V625LA80C V660LA80C V680LA100C Continuous Maximum VRMS VM(AC) Branding (V) 130 130 130 130 140 140 140 140 150 150 150 150 175 175 175 175 230 230 230 230 250 250 250 250 275 275 275 275 300 300 300 300 320 320 320 320 385 385 420 420 460 480 510 550 575 625 660 680 130L5C 130L10C 130L20C 130CX325 140L5C 140L10C 140L20C 140CX340 150L5C 150L10C 150L20C 150CX360 175L5C 175L10C 175L20C 175CX425 230L10C 230L20C 230L40C 230X570 250L10C 250L20C 250L40C 250CX620 275L10C 275L20C 275L40C 275CX680 300L10C 300L20C 300L40C 300CX745 320L10C 320L20C 320L40C 320CX810 385L20C 385L40C 420L20C 420L40C 460L40C 480L80C 510L80C 550L80C 575L80C 625L80C 660L80C 680L100C 102 Revision: January 9, 2009 Maximum Ratings (85 °C) Transient Peak Current (8/20μs) Withstanding Energy (2ms)WTM ( (J) 40 80 200 200 45 90 210 210 50 100 215 215 55 110 220 220 60 125 280 280 65 135 300 300 70 145 320 320 75 155 335 335 80 165 345 345 175 370 185 390 430 420 440 450 460 490 510 520 ) ITM1 1 Pulse (A) 3500 6000 9000 9000 3500 6000 9000 9000 3500 6000 9000 9000 3500 6000 9000 9000 3500 6000 9000 9000 3500 6000 9000 9000 3500 6000 9000 9000 3500 6000 9000 9000 3500 6000 9000 9000 6000 9000 6000 9000 9000 9000 9000 9000 9000 9000 9000 9000 ITM2 2 Pulses (A) 3000 5000 7000 7000 3000 5000 7000 7000 3000 5000 7000 7000 3000 5000 7000 7000 3000 5000 7000 7000 3000 5000 7000 7000 3000 5000 7000 7000 3000 5000 7000 7000 3000 5000 7000 7000 5000 7000 5000 7000 7000 7000 7000 7000 7000 7000 7000 7000 ©2008 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/c-iii.html for current information. Varistor Products Radial Lead Varistors > C-III series Lead–free And RoHS Compliant Models Standard Models Part Number Part Number V130LA5CP V130LA10CP V130LA20CP V130LA20CPX325 V140LA5CP V140LA10CP V140LA20CP V140LA20CPX340 V150LA5CP V150LA10CP V150LA20CP V150LA20CPX360 V175LA5CP V175LA10CP V175LA20CP V175LA20CPX425 V230LA10CP V230LA20CP V230LA40CP V230LA40CPX570 V250LA10CP V250LA20CP V250LA40CP V250LA40CPX620 V275LA10CP V275LA20CP V275LA40CP V275LA40CPX680 V300LA10CP V300LA20CP V300LA40CP V300LA40CPX745 V320LA10CP V320LA20CP V320LA40CP V320LA40CPX810 V385LA20CP V385LA40CP V420LA20CP V420LA40CP V460LA40CP V480LA80CP V510LA80CP V550LA80CP V575LA80CP V625LA80CP V660LA80CP V680LA100CP V130LA5C V130LA10C V130LA20C V130LA20CX325 V140LA5C V140LA10C V140LA20C V140LA20CX340 V150LA5C V150LA10C V150LA20C V150LA20CX360 V175LA5C V175LA10C V175LA20C V175LA20CX425 V230LA10C V230LA20C V230LA40C V230LA40CX570 V250LA10C V250LA20C V250LA40C V250LA40CX620 V275LA10C V275LA20C V275LA40C V275LA40CX680 V300LA10C V300LA20C V300LA40C V300LA40CX745 V320LA10C V320LA20C V320LA40C V320LA40CX810 V385LA20C V385LA40C V420LA20C V420LA40C V460LA40C V480LA80C V510LA80C V550LA80C V575LA80C V625LA80C V660LA80C V680LA100C Specifications (25 °C) Varistor Voltage at 1mA Maximum Clamping Model Size Duty Cycle Surge Rating DC Test Current Voltage (8/20μs) Disc Diameter (mm) VN Max VC Ip VN Min 3kA (8/20μs) # 750A (8/20μs) Pulses # Pulses (V) (V) (V) (A) 10 184 228 340 25 2 100 14 184 228 340 50 40 600 20 184 228 340 100 80 1600 20 184 220 325 100 80 1600 10 198 242 360 25 2 100 14 198 242 360 50 40 600 20 198 242 360 100 80 1600 20 198 230 340 100 80 1600 10 212 268 395 25 2 100 14 212 268 395 50 40 600 20 212 268 395 100 80 1600 20 212 243 360 100 80 1600 10 247 303 455 25 2 100 14 247 303 455 50 40 600 20 247 303 455 100 80 1600 20 247 285 425 100 80 1600 10 324 396 595 25 2 100 14 324 396 595 50 40 600 20 324 396 595 100 80 1600 20 324 384 570 100 80 1600 10 354 429 650 25 2 100 14 354 429 650 50 40 600 20 354 429 650 100 80 600 20 354 413 620 100 80 1600 10 389 473 710 25 2 100 14 389 473 710 50 40 600 20 389 473 710 100 80 1600 20 389 453 680 100 80 1600 10 420 517 775 25 2 100 14 420 517 775 50 40 600 20 420 517 775 100 80 1600 20 420 490 745 100 80 1600 10 462 565 850 25 2 100 14 462 565 850 50 40 600 20 462 565 850 100 80 1600 20 462 540 810 100 80 1600 14 558 682 1025 50 40 600 20 558 682 1025 100 80 1600 14 610 748 1120 50 40 600 20 610 748 1120 100 80 1600 20 640 790 1190 100 80 1600 20 670 825 1240 100 80 1600 20 735 910 1350 100 80 1600 20 780 970 1435 100 80 1600 20 805 1000 1500 100 80 1600 20 900 1100 1725 100 80 1600 20 940 1210 1820 100 80 1600 20 990 1130 1700 100 80 1600 1 Average power dissipation of transients not to exceed 0.6W and 1W for model sizes 14mm and 20mm, respectively. 2 7mm parts also available-contact factory for further information 3 For additional or intermediary voltage ratings contact factory ©2008 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/c-iii.html for current information. 103 Revision: January 9, 2009 C-III Varistor Series C–III Series C-III Series Specifications Varistor Products Radial Lead Varistors > C-III 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 above. 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 TIME T1 Current Energy and Power Derating Curve T2 Figure 2 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 Figure 1 70 80 90 100 110 120 AMBIENT TEMPERATURE ( oC) 130 140 150 Transient V-I Characteristics Curves Pulse Rating Curves Maximum Clamping Voltage for 10mm Parts Repetitive Surge Capability for 10mm Parts V130LA5C(P)-V320LA10C(P) V130LA5C(P) – V320LA10C(P) 10,000 10,000 MODEL SIZE = 10mm 1 2 10 Maximum Voltage (V) V300LA10C(P) V275LA10C(P) V250LA10C(P) 1,000 V230LA10C(P) 10 2 10 3 10 4 100 8 Peak Rated Surge Current (A) 1,000 V320LA10C(P) MODEL SIZE = 10mm 10 V175LA5C(P) V150LA5C(P) V140LA5C(P) 1 V130LA5C(P) 10 100 100 1,000 10,000 Surge Impulse Duration (μs) 0.001 Figure 3 C-III Varistor Series 0.01 0.1 1 1.0 Peak Amperes (A) 100 1000 Figure 4 10000 104 Revision: January 9, 2009 ©2008 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/c-iii.html for current information. Varistor Products Radial Lead Varistors > C-III series Transient V-I Characteristics Curves (continued) Pulse Rating Curves Maximum Clamping Voltage for 14mm Parts Repetitive Surge Capability for 14mm Parts V130LA10C(P) – V420LA20C(P) V130LA10C(P)-V420LA20C(P) 10,000 10,000 1 MODEL SIZE = 14mm 2 10 10 MODEL SIZE = 14mm V420LA20C(P) V320LA20C(P) V300LA20C(P) 1,000 V275LA20C(P) V250LA20C(P) 1,000 3 10 10 3 10140 100 4 8 Peak Rated Surge Current (A) Maximum Voltage (V) 10 2 V230LA20C(P) V385LA20C(P) V175LA10C(P) V150LA10C(P) V140LA10C(P) V130LA10C(P) 100 10 0.01 0.1 1 100 1.0 10000 1000 10 100 Figure 6 Peak Amperes (A) Maximum Clamping Voltage for 20mm Parts 1,000 10,000 Surge Impulse Duration (μs) Repetitive Surge Capability for 20mm Parts V130LA20C(P)-V680LA100C(P) V130LA5C(P) - V320LA10C (P) 10,000 V680LA100C(P) V660LA100C(P) 10,000 1 C–III Series 0.001 Figure 5 2 10 V625LA80C(P) MODEL SIZE = 20mm V510LA80C(P) V480LA80C(P) 1,000 10 3 1,000 10 3 10 4 100 8 V385LA40C(P) Peak Rated Surge Current (A) Maximum Voltage (V) V420LA40C(P) MODEL SIZE = 20mm 10 2 10 2 V575LA80C(P) V320LA40C(P) V300LA40C(P) V275LA40C(P) V250LA40C(P) V230LA40C(P) V175LA20C(P) V140LA20C(P) V130LA20C(P) V150LA20C(P) 10 100 Figure 7 0.001 0.01 0.1 1 100 1.0 1000 10 10000 Figure 8 Peak Amperes (A) 100 1,000 Surge Impulse Duration (μs) 10,000 Maximum Clamping Voltage for Low Clamping Voltage Parts V130LA20CX325(P) - V300LA40CX245 (P) 10,000 Maximum Voltage (V) V300LA40CX810(P) V300LA40CX745(P) V275LA40CX680(P) V250LA40CX620(P) 1,000 V230LA40CX570(P) V175LA20CX425(P) V150LA20CX360(P) V140LA20CX340(P) V130LA20CX325(P) 100 Figure 9 0.001 0.01 0.1 1 1.0 Peak Amperes (A) 100 ©2008 Littelfuse, Inc. 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Please refer to www.littelfuse.com/series/c-iii.html for current information. 1000 10000 105 Revision: January 9, 2009 C-III Varistor Series Varistor Products Radial Lead Varistors > C-III series Wave Solder Profile Lead–free Profile Non Lead–free Profile 300 300 250 TEMPERATURE (ºC) 250 TEMPERATURE (ºC) Maximum Wave 260C Maximum Wave 240C 200 150 100 200 150 100 50 50 0 0 0 0.5 1 Figure 10 1.5 2 2.5 3 3.5 0 4 0.5 Figure 11 TIME(MINUTES) 1 1.5 2 2.5 3 3.5 4 TIME(MINUTES) Physical Specifications Environmental Specifications Lead Material Tin–Coated Copper Wire Operating/Storage Temperature -55°C to +85°C/-55°C to +125°C Soldering Characteristics Solderability per MIL–STD–202, Method 208E Humidity Aging +85°C, 85% RH, 1000 hours +/-10% typical voltage change Insulating Material Cured, flame retardant epoxy polymer meets UL94V–0 requirements Device Labeling Marked with LF, voltage, UL/CSA Logos, and date code +85°C to -40°C 10 times +/-10% typical voltage change Solvent Resistance MIL–STD–202, Method 215F Moisture Sensitivity Level 1, J–STD–020C C-III Series Varistors for Hi-Temperature Operating Conditions: t
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EFUBJMT C-III Varistor Series 106 Revision: January 9, 2009 ©2008 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/c-iii.html for current information. Varistor Products Radial Lead Varistors > C-III series AC Bias Reliability The C-III Series MOVs were designed for use on the AC line. The varistor is connected across the AC line and is biased with a constant amplitude sinusoidal voltage. It should be noted that the definition of failure is a shift in the nominal varistor voltage (VN) exceeding +/-10%. Although this type of varistor is still functioning normally after this magnitude of shift, devices at the lower extremities of VN tolerance will begin to dissipate more power. High Temperature Operating Life 125ºC for 1000 Hours at Rated Bias 300 VNOM AT 1mA (V) V130LA20C Because of this possibility, an extensive series of statistically designed tests were performed to determine the reliability of the C-III type of varistor under AC bias combined with high levels of temperature stress. To date, this test has generated over 50,000 device hours of operation at a temperature of 125ºC, although only rated at 85ºC. Changes in the nominal varistor voltage, measured at 1mA, of less than 2% have been recorded, as displayed in the diagram at right. 250 200 150 100 0 100 200 300 Figure 12 400 500 600 700 TIME (HOURS) 800 900 1000 1100 Transient Surge Current/Energy Transient Capability The transient surge rating serves as an excellent figure of merit for the C-III varistor. This inherent surge handling capability is one of the C-III varistor’s best features. The enhanced surge absorption capability results from improved process uniformity and enhanced construction. The homogeneity of the raw material powder and improved control over the sintering and assembly processes are contributing factors to this improvement. In the low power AC mains environment, industry standards (UL, IEC, NEMA and IEEE) all suggest that the worst case surge occurrence will be 3kA. Such a transient event may occur up to five times over the equipment life time (approximately 10 years). While the occurences of five 3kA transients is the required capability, the rated, repetitive surge current for the C-III Series is 80 pulses for the 20mm units and 40 pulses for the 14mm Series. 500 V130LA20C 3kA (8/20μs) 450 400 350 (RATED FOR 80 PULSES) 300 0 10 20 30 Figure 13 CLAMPING VOLTAGE AT 750A As a measure of the inherent device capability, samples of the 20mm V130LA20C devices were subjected to a worst case repetitive transient surges test. After 100 pulses, each of 3kA, there was negligible change in the device characteristics. Changes in the clamping voltage, measured at 100A, of less than 3% were recorded, as shown in the upper diagram at right. Samples of the 14mm Series V175LA20C were subjected to repetitive surge occurrences of 750A. Again, there was negligible changes in any of the device characteristics after 2000 pulses, as shown in the lower diagram at right. C–III Series CLAMPING VOLTAGE AT 3kA Typical Repetitive Surge Current Capability of C-III Series MOVs 40 50 60 70 80 NUMBER OF SURGES 600 90 100 110 120 V175LA20C 750A (8/20μs) 550 500 450 400 350 300 (RATED FOR 1600 PULSES) 0 Figure 14 200 400 600 800 1000 1200 1400 1600 2000 NUMBER OF SURGES In both cases the inherent device capability is far in excess of the expected worst case scenario. ©2008 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/c-iii.html for current information. 107 Revision: January 9, 2009 C-III Varistor Series Varistor Products Radial Lead Varistors > C-III series Product Dimensions (mm) ØD A *SEATING ATRIM PLANE LTRIM 25.4 (1.00) Øb CRIMPED AND LEAD CRIMPED ANDTRIMMED TRIMMED LEADS Radial lead types can be supplied with combination preformed crimp and trimmed leads. This option is supplied to the dimensions shown below. e e1 E *Seating plane interpretation per IEC-60717 10mm Size 14mm Size 20mm Size Dimension VRMS Voltage Model Min. Max. Min. Max. Min. Max. A All 12.0 (0.472) 16.0 (0.630) 13.5 (0.531) 20.0 (0.787) 17.5 (0.689) 28.0 (1.102) ØD All 10.0 (0.394) 12.5 (0.492) 13.5 (0.531) 17.0 (0.669) 17.5 (0.689) 23.0 (0.906) e All 6.5 (0.256) 8.5 (0.335) 6.5 (0.256) 8.5 (0.335) 6.5 (0.256) 8.5 (0.335) 2.5 (0.098) 5.5 (0.216) 2.5 (0.098) 5.5 (0.216) 2.5 (0.098) 5.5 (0.216) 4.5 (0.177) 9.0 (0.354) 4.5 (0.177) 9.0 (0.354) – 7.3 (0.287) – 0.76 (0.030) 0.86 (0.034) 0.76 (0.030) 0.86 (0.034) e1 E Øb 130 - 320  130 - 320  130 - 320  7.3 (0.287) 11.0 (0.433) – 7.3 (0.287) 11.0 (0.433) 0.76 (0.030) 0.86 (0.034) 0.95 (0.037) 1.05 (0.041) ATRIM All – 19.5 (0.768) – 23.5 (0.925) – 30.0 (1.18) LTRIM All 2.41 (0.095) 4.69 (0.185) 2.41 (0.095) 4.69 (0.185) 2.41 (0.095) 4.69 (0.185) Dimensions are in millimeters (inches) 1. 10mm lead spacing also available. See additional lead style options. 2. 7mm and 12mm devices also available upon request. Contact factory for details. C-III Varistor Series 108 Revision: January 9, 2009 ©2008 Littelfuse, Inc. 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POMZ Symbol CRIMPED LEADS "LT" P E DP DP DH DH C SEATING PLANE H1 W0 W2 W1 H0 b W D0 P1 t F P P2 E DP Model Size 14mm 20mm P Pitch of Component P0 Feed Hole Pitch 12.7 -/+ 0.2 P1 Feed Hole Center to Pitch 8.85 -/+ 0.8 P2 Hole Center to Component Center 12.7 -/+ 0.7 F Lead to Lead Distance 7.50 -/+ 0.8 h Component Alignment W Tape Width W0 Hold Down Tape Width W1 Hole Position W2 Hold Down Tape Position 25.4 -/+1.0 2.00 Max 18.25 -/+ 0.75 12.0 -/+ 0.3 9.125 -/+ 0.625 0.5 Max H Height From Tape Center To Component Base 19.0 -/+1.0 H0 Seating Plane Height 16.0 -/+ 0.5 H1 Component Height D0 Feed Hole Diameter 4.0 -/+ 0.2 0.7 -/+ 0.2 P1 STRAIGHT LEADS "LS" 10mm 36 Max 40 Max t Total Tape Thickness p Component Alignment 3° Max U Under crimp Width 8.0 Max 46.5 Max DP DH DH H1 W0 W2 W1 H b W D0 P1 t F P0 UNDER-CRIMPED LEADS "LU" P P2 E DP DP DH DH U H1 W0 W2 W1 Ho b W D0 P1 F t P0 ©2008 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/c-iii.html for current information. 109 Revision: January 9, 2009 C-III Varistor Series C–III Series P2 Description Varistor Products Radial Lead Varistors > C-III series Part Numbering System BASE PART CODES (See Ratings & Specifications tables and notes below) V XXXX LA XX C P OPTION CODES (See notes below) XXXXX See OPTIONS CODES notes below For “VARISTOR” V M(AC) (Three or four digits -- 130V to 1,000V) P: LEAD-FREE AND RoHS COMPLIANT OPTION 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) 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 C-III SERIES DESIGNATOR Ordering Notes: BASE PART CODES: OPTION CODES: Series + Packaging / Lead Style Designators: X10: 10MM LEAD SPACING OPTION -- Ordering examples: For 10 (-/+1)mm lead spacing (available on 20mm diameter models only), append standard model BASE PART number with "X10." Example: Straight Lead Bulk Pack (standard) Straight Lead Tape & Reel Crimped Lead Tape & Reel V130LA20C V130LS20C V130LT20C Crimped & UnderTrimmed Crimp Lead Lead Tape & Bulk Pack Reel V130LC20C Standard Model Order As V130LA20C V130LA20CX10 V130LU20C X2855: Nickel Barrier COATED WIRE OPTION -- Crimped leads are standard on LA Series varistors supplied in tape and reel, denoted with "LT." 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: "LC" style is supplied in bulk only. "LU" style is supplied in tape & reel only. For crimped leads without trimming and any varitions other than that described above, please contact Littelfuse. Standard Model Order As V130LA20C V130LA20CX2855 Lead–free / RoHS Designator: Littelfuse C-III 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 a Littelfuse representative to discuss non-standard options. For Lead–free and RoHS compliant parts add "P" after the BASE PART number and before any other OPTION CODE: Standard Model Order As V130LA20C V130LA20CP TAPE & REEL QUANTITIES: Device Size Voltage ALL ≤ 275V ≥ 275V ≤ 275V ≥ 275V Standard Model with Option Order As 10mm V420LA20CX1347 V420LA20CPX1347 14mm 20mm C-III Varistor Series 110 Revision: January 9, 2009 "T" Reel 500 500 400 500 400 Quantity Per Reel "S" Reel "U"Reel 500 500 500 500 400 400 500 500 400 400 ©2008 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/c-iii.html for current information.