Varistor Products Radial Lead Varistors > C-III series C-III Varistor Series RoHS 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 • Lead–free, HalogenFree and RoHS compliant E320116 • High energy absorption capability WTM 40J to 530J (2ms) LR91788 116895 • High pulse life rating 42201-006 • High peak pulse current capability ITM 3500A to 10,000A (8/20μs) • Wide operating voltage range VM(AC)RMS 130V to 1000V • Available in tape and reel for automatic insertion; Also available with crimped and/or trimmed lead styles • No derating up to 85ºC ambient • The C-III Series is supplied in 10mm, 14mm and 20mm disc versions with various lead options Absolute Maximum Ratings • For ratings of individual members of a series, see Device Ratings and Specifications chart Continuous C-III Series Units 130 to 1000 V 3500 to 10,000 A Steady State Applied Voltage: AC 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 <0.01 %/ºC Hi-Pot Encapsulation (COATING Isolation Voltage Capability) 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. © 2013 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/c-iii.html for current information. 113 Revised: June 5, 2013 C-III Varistor Series C–III Series Agency Varistor Products Radial Lead Varistors > C-III series C-III Series Ratings Maximum Ratings (85 °C) Continuous Transient 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 V385LA10CP V385LA20CP V385LA40CP V420LA10CP V420LA20CP V420LA40CP V460LA10CP V460LA20CP 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 P385L10C P385L20C P385L40C P420L10C P420L20C P420L40C P460L10C P460L20C Disc Size (mm) 10 14 20 20 10 14 20 20 10 14 20 20 10 14 20 20 10 14 20 20 10 14 20 20 10 14 20 20 10 14 20 20 10 14 20 20 10 14 20 10 14 20 10 14 Specifications (25 °C) Peak Current (8/20μs) Maximum Withstanding VRMS Energy (2ms) ITM2 ITM1 WTM ( VM(AC) ) 1 Pulse 2 Pulses (V) (J) (A) (A) 130 130 130 130 140 140 140 140 150 150 150 150 175 175 175 175 230 230 230 230 250 250 250 250 275 275 275 275 300 300 300 300 320 320 320 320 385 385 385 420 420 420 460 460 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 85 175 370 90 185 390 95 190 3500 6500 10000 10000 3500 6500 10000 10000 3500 6500 10000 10000 3500 6500 10000 10000 3500 6500 10000 10000 3500 6500 10000 10000 3500 6500 10000 10000 3500 6500 10000 10000 3500 6500 10000 10000 3500 6500 10000 3500 6500 10000 3500 6500 114 Revised: June 5, 2013 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 3000 5000 7000 3000 5000 7000 3000 5000 Varistor Voltage at 1mA DC Test Current Maximum Clamping Voltage (8/20μs) VN Min (V) VN Max (V) VC (V) 184 184 184 184 198 198 198 198 212 212 212 212 247 247 247 247 324 324 324 324 354 354 354 354 389 389 389 389 420 420 420 420 462 462 462 462 558 558 558 610 610 610 640 640 228 228 228 220 242 242 242 230 268 268 268 243 303 303 303 285 396 396 396 384 429 429 429 413 473 473 473 453 517 517 517 490 565 565 565 540 682 682 682 748 748 748 790 790 340 340 340 325 360 360 360 340 395 395 395 360 455 455 455 425 595 595 595 570 650 650 650 620 710 710 710 680 775 775 775 745 850 850 850 810 1025 1025 1025 1120 1120 1120 1190 1190 Duty Cycle Surge Rating 3kA 750A Ip (8/20μs) (8/20μs) (A) # # Pulses Pulses 25 50 100 100 25 50 100 100 25 50 100 100 25 50 100 100 25 50 100 100 25 50 100 100 25 50 100 100 25 50 100 100 25 50 100 100 25 50 100 25 50 100 25 50 2 10 20 20 2 10 20 20 2 10 20 20 2 10 20 20 2 10 20 20 2 10 20 20 2 10 20 20 2 10 20 20 2 10 20 20 2 10 20 2 10 20 2 10 20 80 120 120 20 80 120 120 20 80 120 120 20 80 120 120 20 80 120 120 20 80 120 120 20 80 120 120 20 80 120 120 20 80 120 120 20 80 120 20 80 120 20 80 © 2013 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 C-III Series Specifications (continued from previous page) Part Number V460LA40CP V480LA10CP V480LA40CP V480LA80CP V510LA10CP V510LA40CP V510LA80CP V550LA10CP V550LA40CP V550LA80CP V575LA10CP V575LA40CP V575LA80CP V625LA10CP V625LA40CP V625LA80CP V660LA10CP V660LA50CP V660LA80CP V680LA10CP V680LA80CP V680LA100CP V1000LA80CP V1000LA160CP Branding P460L40C P480L10C P480L40C P480L80C P510L10C P510L40C P510L80C P550L10C P550L40C P550L80C P575L10C P575L40C P575L80C P625L10C P625L40C P625L80C P660L10C P660L50C P660L80C P680L10C P680L80C P680L100C P1000L8C P1000L16C Disc Size (mm) Specifications (25 °C) Peak Current (8/20μs) Maximum Withstanding VRMS Energy (2ms) ITM2 ITM1 WTM ( VM(AC) ) 1 Pulse 2 Pulses (V) (J) (A) (A) 20 10 14 20 10 14 20 10 14 20 10 14 20 10 14 20 10 14 20 10 14 20 14 20 460 480 480 480 510 510 510 550 550 550 575 575 575 625 625 625 660 660 660 680 680 680 1000 1000 430 95 195 420 98 205 440 98 210 450 100 230 460 105 235 490 110 240 510 115 240 520 260 530 10000 3500 6500 10000 3500 6500 10000 3500 6500 10000 3500 6500 10000 3500 6500 10000 3500 6500 10000 3500 6500 10000 6500 10000 7000 3000 5000 7000 3000 5000 7000 300 5000 7000 3000 5000 7000 3000 5000 7000 3000 5000 7000 3000 5000 7000 5000 7000 Varistor Voltage at 1mA DC Test Current Maximum Clamping Voltage (8/20μs) VN Min (V) VN Max (V) VC (V) 640 670 670 670 735 735 735 780 780 780 815 815 815 900 900 900 940 940 940 990 990 990 1500 1500 790 825 825 825 910 910 910 970 970 970 1000 1000 1000 1100 1100 1100 1210 1210 1210 1240 1210 1130 1800 1800 1190 1240 1240 1240 1350 1350 1350 1435 1435 1435 1500 1500 1500 1650 1650 1725 1820 1820 1820 1860 1820 1700 2700 2700 Duty Cycle Surge Rating 3kA 750A Ip (8/20μs) (8/20μs) (A) # # Pulses Pulses 100 25 50 100 25 50 100 25 50 100 25 50 100 25 50 100 25 50 100 25 50 100 50 100 20 2 10 20 2 10 20 2 10 20 2 10 20 2 10 20 2 10 20 2 10 20 10 20 120 20 80 120 20 80 120 20 80 120 20 80 120 20 80 120 20 80 120 20 80 120 80 120 NOTES: - Average power dissipation of transients not to exceed 0.6W and 1W for model sizes 14mm and 20mm, respectively. - 7mm parts also available-contact factory for further information - For additional or intermediary voltage ratings contact factory Phenolic Coating Option -- C-III Series Varistors for Hi-Temperature Operating Conditions: • Phenolic Coated CIII Series devices are available with improved maximum operating maximum temperature 125ºC • These devices also have improved temperature cycling performance capability. • Ratings and Specifications are as per standard CIII Series except Hi–Pot Encapsulation (Isolation Voltage Capability)=500V. • To order: add X1347 to part number (e.g. V230LA40CPX1347) • These devices are not UL, CSA, VDE or CECC certified. • Contact factory for further details. • Product marking: LF 9 P230P40C Lead-Free, YYWW Halogen-Free & RoHS Compliant Indicator Phenolic Coated Option Identifier © 2013 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/c-iii.html for current information. 115 Revised: June 5, 2013 C-III Varistor Series C–III Series Maximum Ratings (85 °C) Continuous Transient Varistor Products Radial Lead Varistors > C-III series Current Energy and Power Dissipation Ratings 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 Figure 1B - Power Derating for Phenolic Coated 100 100 90 90 PERCENT OF RATED VALUE PERCENT OF RATED VALUE Figure 1A - Power Derating for Epoxy Coated 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. 80 70 60 50 40 30 20 80 70 60 50 40 30 20 10 10 0 -55 50 60 70 80 90 100 110 120 AMBIENT TEMPERATURE ( oC) 130 0 -55 140 150 50 60 70 80 90 100 110 120 AMBIENT TEMPERATURE ( oC) 130 140 150 PERCENT OF PEAK VALUE Peak Pulse Current Test Waveform 100 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 90 50 10 O1 T TIME T1 Figure 2 T2 Transient V-I Characteristics Curves Pulse Rating Curves Maximum Clamping Voltage for 10mm Parts Repetitive Surge Capability for 10mm Parts V130LA5C(P) – V625LA10C(P) V130LA5C(P)-V320LA10C(P) 10,000 10000 RATED PEAK SURGE CURRENT (A) MODEL SIZE = 10MM TA = -55oC TO 85oC 130 to 625VM(AC) RATING MAXIMUM PEAKVOLTAGE (V) MAXIMUM CLAMP VOLTAGE 625 550 510 460 440 420 385 320 300 275 250 230 1000 130 140 100 0.001 150 175 MODEL SIZE = 10mm TA = -55oC TO 85 oC 1 2 15 1,000 104 105 106 10 2 10 3 100 ∞ 10 1 0.01 Figure 3 C-III Varistor Series 0.1 1 10 PEAK CURRENT (A) 100 1000 10 10000 Figure 4 116 Revised: June 5, 2013 100 1,000 10,000 SURGE IMPULSE DURATION (μs) © 2013 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 (continued) Maximum Clamping Voltage for 14mm Parts Repetitive Surge Capability for 14mm Parts V130LA10C(P) – V420LA20C(P) V130LA10C(P)-V420LA20C(P) 10,000 10,000 RATED PEAK SURGE CURRENT (A) V460LA20C(P) Maximum Voltage (V) V420LA20C(P) V385LA20C(P) V230LA20C(P) V320LA20C(P) V300LA20C(P) V275LA20C(P) 1,000 1 15 MODEL SIZE = 14mm V250LA20C(P) V175LA10C(P) V150LA10C(P) 2 MODEL SIZE = 14mm TA = -55oC TO 85 oC 102 1,000 103 104 ∞ 100 10 V140LA10C(P) V130LA10C(P) 1 10 0.001 0.01 0.1 Figure 5 1 100 10 10000 1000 100 1,000 10,000 SURGE IMPULSE DURATION (μs) Figure 6 Peak Amperes (A) Maximum Clamping Voltage for 20mm Parts Repetitive Surge Capability for 20mm Parts V130LA5C(P) - V680LA10C (P) V130LA20C(P)-V680LA100C(P) 10,000 V680LA100C(P) V660LA100C(P) RATED PEAK SURGE CURRENT (A) 10,000 V625LA80C(P) MODEL SIZE = 20mm Maximum Voltage (V) V575LA80C(P) V510LA80C(P) V420LA40C(P) V460LA40C(P) V480LA80C(P) V385LA40C(P) 1,000 V320LA40C(P) V300LA40C(P) V275LA40C(P) V250LA40C(P) V230LA40C(P) V175LA20C(P) 1 2 C–III Series 100 MODEL SIZE = 20mm TA = -55oC TO 85 oC 15 102 103 1,000 104 ∞ 100 10 V150LA20C(P) V140LA20C(P) V130LA20C(P) 1 100 Figure 7 0.001 0.01 0.1 1 100 10 1000 10000 Figure 8 Peak Amperes (A) 10 100 1,000 10,000 SURGE IMPULSE DURATION (μs) 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 10 Peak Amperes (A) 100 © 2013 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/c-iii.html for current information. 1000 10000 117 Revised: June 5, 2013 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) TEMPERATURE (ºC) Maximum Wave 260C Maximum Wave 240C 250 200 150 100 200 150 100 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 Physical Specifications Environmental Specifications Lead Material Copper Clad Steel 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 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 Device Labeling C-III Varistor Series 4 TIME(MINUTES) Marked with LF, voltage, UL/CSA Logos, and date code 118 Revised: June 5, 2013 © 2013 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 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. High Temperature Operating Life 125ºC for 1000 Hours at Rated Bias 300 V130LA20C VNOM AT 1mA (V) 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. 250 200 150 100 0 100 200 Figure 12 300 400 500 600 700 TIME (HOURS) 800 900 1000 1100 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 20 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 20mm Series V175LA20C were subjected to repetitive surge occurrences of 750A. Again, there was negligible changes in any of the device characteristics after 120 pulses, as shown in the lower diagram at right. CLAMPING VOLTAGE AT 3kA 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 20 pulses for the 20mm units and 10 pulses for the 14mm Series. Typical Repetitive Surge Current Capability of C-III Series MOVs 500 V130LA20C 3kA (8/20μs) 450 400 350 (RATED FOR 20 PULSES) 300 0 5 Figure 13 CLAMPING VOLTAGE AT 750A 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. C–III Series Transient Surge Current/Energy Transient Capability 10 15 20 NUMBER OF SURGES 600 25 30 V175LA20C 750A (8/20μs) 550 500 450 400 350 300 0 (RATED FOR 120 PULSES) 50 100 150 200 NUMBER OF SURGES 250 300 Figure 14 In both cases the inherent device capability is far in excess of the expected worst case scenario. © 2013 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/c-iii.html for current information. 119 Revised: June 5, 2013 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 VRMS Voltage Model 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) Dimension e e1 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) 1.5 (0.059) 5.5 (0.216) 1.5 (0.059) 4.5 (0.177) 1.5 (0.059) 4.5 (0.177) 385 - 680 2.5 (0.098) 7.5 (0.295) 2.5 (0.098) 7.5 (0.295) 2.5 (0.098) 7.5 (0.295) > 680 4.5 (0.177) 9.5 (0.374) 4.5 (0.177) 9.5 (0.374) 4.5 (0.177) 9.5 (0.374) - 11.0 (0.433) - 11.0 (0.433) - 11.0 (0.433) 0.76 (0.030) 0.86 (0.034) 385 - 680 7.3 (0.287) > 680 Øb Max. 130 - 320 130 - 320 E Min. 130 - 625 >625 7.3 (0.287) 14.0 (0.551) 7.3 (0.287) 14.0 (0.551) 0.76 (0.030) 0.86 (0.034) 0.76 (0.030) 0.86 (0.034) 14.0 (0.551) 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 120 Revised: June 5, 2013 © 2013 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 Tape and Reel Specifications • (available for voltage ratings up to 550V only) CRIMPED LEADS "LT" P P2 E DP DP DH DH W0 W2 W1 H0 b W D0 P1 t F P P2 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 25.4 -/+1.0 F Lead to Lead Distance 7.50 -/+ 0.8 h Component Alignment 2.00 Max W Tape Width W0 Hold Down Tape Width W1 Hole Position W2 Hold Down Tape Position 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 t Total Tape Thickness 0.7 -/+ 0.2 p Component Alignment 3° Max U Under crimp Width 8.0 Max E DP Model Size 14mm 20mm Pitch of Component P0 STRAIGHT LEADS "LS" 10mm P C SEATING PLANE H1 Description 36 Max 40 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 H1 U W0 W2 W1 Ho b W D0 P1 F t P0 © 2013 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/c-iii.html for current information. 121 Revised: June 5, 2013 C-III Varistor Series C–III Series Symbol 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) 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) C-III SERIES DESIGNATOR 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: 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 & Trimmed Lead Bulk Pack Under-Crimp Lead Tape & Reel V130LA20CP V130LS20CP V130LC20CP V130LU20CP Crimped leads are standard on LA Series varistors supplied in tape and reel, denoted with "LT." "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. Tape & Reel Quantities: Device Size Voltage 10mm ALL ≤ 275V ≥ 275V ≤ 275V ≥ 275V 14mm 20mm C-III Varistor Series Quantity Per Reel "T" Reel "S" Reel "U"Reel 500 500 500 500 500 500 400 400 400 500 500 500 400 400 400 Order As V130LA20CP V130LA20CPX10 X2855: Nickel Barrier COATED WIRE OPTION -All standard parts use tinned copper clad steel 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: Packaging and Quantities: 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. Standard Model Standard Model Order As V130LA20CP V130LA20CPX2855 X1347: Hi-Temperature phenolic coating option -Phenolic Coated C-III Series devices are available with improved maximum operating maximum temperature of 125°C. To order, add X1347 to end of part number (Example: V230LA40CPX1347). For additional information please refer to the section labeled "Phenolic Coating Option" on the third page of this document under the "Electrical Characteristics" table. 122 Revised: June 5, 2013 © 2013 Littelfuse, Inc. Specifications are subject to change without notice. Please refer to www.littelfuse.com/series/c-iii.html for current information.