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Varistor Products
Line Voltage Operation, Radial Lead
LA Varistor Series
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.
(R)
D
V
E
(R)
Features
* 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: Recognized under the components program of Underwriters Laboratories. Certified by CSA, VDE and CECC. AGENCY FILE NUMBERS: UL E75961, E56529, E135010; CSA
LR91788; VDE 116895E; CECC 42201-006.
ALSO SEE LITTELFUSE ULTRAMOVTM AND C-III VARISTOR SERIES
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Varistor Products
Line Voltage Operation, Radial Lead
LA Varistor Series
Absolute Maximum Ratings For ratings of individual members of a series, see Device Ratings and Specifications chart
Continuous: Steady State Applied Voltage: AC Voltage Range (VM(AC)RMS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 130 to 1000 DC Voltage Range (VM(DC)) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 175 to 1200 Transients: Peak Pulse Current (ITM) For 8/20s Current Wave (See Figure 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1200 to 6500 Single Pulse Energy Range For 10/1000s 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
(Dielectric must withstand indicated DC voltage for one minute per MIL-STD 202, Method 301)
LA SERIES
UNITS
V V
2
VARISTOR PRODUCTS
A J C 0 C %/0C V
0
Insulation Resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1000
M
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) CONTINUOUS TRANSIENT ENERGY 10 x 1000s WTM (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 PEAK CURRENT 8 x 20s ITM (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 184 184 184 184 184 184 198 198 198 198 212 212 212 212 212 212 247 247 247 247 324 324 324 324 VARISTOR VOLTAGE AT 1mA DC TEST CURRENT VNOM MIN (V) 255 228 228 228 228 220 242 242 242 242 284 268 268 268 268 243 303 303 303 303 396 396 396 396 VNOM MAX SPECIFICATIONS (25 oC) MAXIMUM CLAMPING VOLTAGE 8 x 20s VC (V) 390 340 340 340 340 325 360 360 360 340 430 395 395 395 395 360 455 455 455 455 595 595 595 595 IPK (A) 10 10 25 50 100 100 10 25 50 100 10 10 25 50 100 100 10 25 50 100 10 25 50 100 TYPICAL CAPACITANCE f = 1MHz C (pF) 180 180 450 1000 1900 1900 160 400 900 1750 150 150 360 800 1600 1600 130 350 700 1400 100 250 550 1100
PART NUMBER V130LA1 V130LA2 V130LA5 V130LA10A V130LA20A V130LA20B V140LA2 V140LA5 V140LA10A V140LA20A V150LA1 V150LA2 V150LA5 V150LA10A V150LA20A V150LA20B V175LA2 V175LA5 V175LA10A V175LA20A V230LA4 V230LA10 V230LA20A V230LA40A
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
DEVICE MODEL NUMBER BRANDING 1301 1302 1305 130L10 130L20 130L20B 1402 1405 140L10 140L20 1501 1502 1505 150L10 150L20 150L20B 1752 1755 175L10 175L20 2304 230L 230L20 230L40
VRMS VM(AC) (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
VDC VM(DC) (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
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Varistor Products
Line Voltage Operation, Radial Lead
LA Varistor Series
Device Ratings and Specifications
(Continued)
MAXIMUM RATING (85 oC) CONTINUOUS TRANSIENT ENERGY 10 x 1000s WTM (J) 21 21 40 72 130 130 23 23 45 75 140 140 25 25 46 77 165 25 48 80 150 27 51 85 160 30 55 90 160 37 35 60 105 180 63 110 190 65 120 220 67 125 230 PEAK CURRENT 8 x 20s ITM (A) 1200 1200 2500 4500 6500 6500 1200 1200 2500 4500 6500 6500 1200 1200 2500 4500 6500 1200 2500 4500 6500 1200 2500 4500 6500 1200 2500 4500 6500 1200 1200 2500 4500 6500 2500 4500 6500 2500 4500 6500 2500 4500 6500 354 354 354 354 354 354 389 389 389 389 389 389 420 420 420 420 420 462 462 462 462 558 558 558 558 610 610 610 610 702 670 670 670 670 735 735 735 805 805 805 900 900 900
SPECIFICATIONS (25 oC) VARISTOR VOLTAGE AT 1mA DC TEST CURRENT VNOM MIN (V) 473 429 429 429 429 413 515 473 473 473 473 453 565 517 517 517 517 565 565 565 540 682 682 682 682 748 748 748 720 858 825 825 825 790 910 910 860 1000 1000 960 1100 1100 1100 VNOM MAX MAXIMUM CLAMPING VOLTAGE 8 x 20s VC (V) 730 650 650 650 650 620 775 710 710 710 710 680 870 775 775 775 775 850 850 850 810 1025 1025 1025 1025 1120 1120 1120 1060 1130 1240 1240 1240 1160 1350 1350 1280 1500 1500 1410 1650 1650 1650 IPK (A) 10 10 25 50 100 100 10 10 25 50 100 100 10 10 25 50 100 10 25 50 100 10 25 50 100 10 25 50 100 10 10 25 50 100 25 50 100 25 50 100 25 50 100 TYPICAL CAPACITANCE f = 1MHz C (pF) 90 90 220 500 1000 1000 80 80 200 450 900 900 70 70 180 400 800 65 170 380 750 60 160 360 700 55 140 300 600 55 50 120 270 550 100 250 500 90 220 450 80 210 425
PART NUMBER V250LA2 V250LA4 V250LA10 V250LA20A V250LA40A V250LA40B V275LA2 V275LA4 V275LA10 V275LA20A V275LA40A V275LA40B V300LA2 V300LA4 V300LA10 V300LA20A V300LA40A V320LA7 V320LA10 V320LA20A V320LA40B V385LA7 V385LA10 V385LA20A V385LA40B V420LA7 V420LA10 V420LA20A V420LA40B V460LA7 V480LA7 V480LA10 V480LA40A V480LA80B V510LA10 V510LA40A V510LA80B V575LA10 V575LA40A V575LA80B V625LA10 V625LA40A V625LA80B
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MODEL SIZE DISC DIA. (mm) 7 7 10 14 20 20 7 7 10 14 20 20 7 7 10 14 20 7 10 14 20 7 10 14 20 7 10 14 20 7 7 10 14 20 10 14 20 10 14 20 10 14 20
DEVICE MODEL NUMBER BRANDING 2502 2504 250L 250L20 250L40 250L40B 2752 2754 275L 275L20 275L40 275L40B 3002 3004 300L 300L20 300L40 3207 320L 320L20 320L40 3857 385L 385L20 385L40 4207 420L 420L20 420L40 4607 4807 480L 480L40 480L80 510L 510L40 510L80 575L 575L40 575L80 625L 625L40 625L80
VRMS VM(AC) (V) 250 250 250 250 250 250 275 275 275 275 275 275 300 300 300 300 300 320 320 320 320 385 385 385 385 420 420 420 420 460 480 480 480 480 510 510 510 575 575 575 625 625 625
VDC VM(DC) (V) 330 330 330 330 330 330 369 369 369 369 369 369 405 405 405 405 405 420 420 420 420 505 505 505 505 560 560 560 560 615 640 640 640 640 675 675 675 730 730 730 825 825 825
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Varistor Products
Line Voltage Operation, Radial Lead
LA Varistor Series
Device Ratings and Specifications
(Continued)
MAXIMUM RATING (85 oC) CONTINUOUS TRANSIENT ENERGY 10 x 1000s WTM (J) 70 140 250 220 360 PEAK CURRENT 8 x 20s ITM (A) 2500 4500 6500 4500 6500 940 940 940 1425 1425
SPECIFICATIONS (25 oC) VARISTOR VOLTAGE AT 1mA DC TEST CURRENT VNOM MIN (V) 1250 1250 1250 1800 1600 VNOM MAX MAXIMUM CLAMPING VOLTAGE 8 x 20s VC (V) 1650 1650 1650 2700 2420 IPK (A) 25 50 100 50 100 TYPICAL CAPACITANCE f = 1MHz C (pF) 70 200 400 130 250
PART NUMBER V660LA10 V660LA50A V660LA100B V1000LA80A V1000LA160B
VM(AC) (V) 660 660 660 1000 1000
VM(DC) (V) 850 850 850 1200 1200
10 14 20 14 20
660L 660L50 660L100 1000L80 1000L160
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
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.
100 90 80 70 60 50 40 30 20 10 0 -55 50 60 70 80 90 100 110 120 130 140 150
AMBIENT TEMPERATURE ( oC)
FIGURE 1. CURRENT, ENERGY AND POWER DERATING CURVE
PERCENT OF PEAK VALUE
100 90
50
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 8/20s Current Waveform: 8s = T1 = Virtual Front Time 20s = T2 = Virtual Time to Half Value
10 O1 T T1 T2 TIME
FIGURE 2. PEAK PULSE CURRENT TEST WAVEFORM
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VARISTOR PRODUCTS
MODEL SIZE DISC DIA. (mm)
DEVICE MODEL NUMBER BRANDING
VRMS
VDC
2
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Line Voltage Operation, Radial Lead
LA Varistor Series
Transient V-I Characteristics Curves
6,000 5,000 4,000 3,000 MAXIMUM PEAKVOLTS (V) 2,000 V275LA2 V250LA2 1,000 900 800 700 600 500 400 300 V130LA1 200 10-3 10-2 10-1 100 101 102 PEAK AMPERES (A) 103 104 100 10-3 10-2 10-1 V300LA2 4,000 MAXIMUM CLAMPINGVOLTAGE MODEL SIZE 7mm 130 TO 300VM(AC) RATING TA = -55oC TO 85oC 3,000 2,000 MAXIMUM PEAKVOLTS (V) MAXIMUM CLAMPINGVOLTAGE MODEL SIZE 7mm 130 TO 300VM(AC) RATING TA = -55oC TO 85oC V300LA4 V275LA4 V250LA4 V230LA4
1,000 900 800 700 600 500 400 300 200 V175LA2 V150LA2 V140LA2 V130LA2 100 101 102 PEAK AMPERES (A) 103 104
V150LA1
FIGURE 3. CLAMPING VOLTAGE FOR V130LA1 - V300LA2
FIGURE 4. CLAMPING VOLTAGE FOR V130LA2 - V300LA4
MAXIMUM PEAKVOLTS (V)
MAXIMUM CLAMPINGVOLTAGE 5,000 MODEL SIZE 7mm 320 TO 480VM(AC) RATING TA = -55oC TO 85oC 3,000 MAXIMUM PEAKVOLTS (V)
6,000 5,000 4,000 3,000 2,000
MAXIMUM CLAMPINGVOLTAGE MODEL SIZE 10mm 130 TO 420VM(AC) RATING TA = -55oC TO 85oC V275LA10 V250LA10 V230LA10 V420LA10
2,000
V460LA7 V480LA7
1,000 V420LA7 V385LA7 V320LA7 500 10-3 10-2 10-1 100 101 PEAK AMPERES (A) 102 103 104
1,000 900 800 700 600 500 400 300
V175LA5 V150LA5 V140LA5 V130LA5 10-2 10-1 100 101 102 PEAK AMPERES (A) 103 104
200 10-3
FIGURE 5. CLAMPING VOLTAGE FOR V320LA7 - V480LA7
FIGURE 6. CLAMPING VOLTAGE FOR V130LA5 - V420LA10
MAXIMUM PEAKVOLTS (V)
3,000 2,000 V300LA10 V320LA10
V625LA10 V660LA10
MAXIMUM PEAKVOLTS (V)
MAXIMUM CLAMPINGVOLTAGE 5,000 MODEL SIZE 10mm 300 TO 660VM(AC) RATING TA = -55oC TO 85oC
6,000 5,000 4,000 3,000 2,000
MAXIMUM CLAMPINGVOLTAGE MODEL SIZE 14mm 130 TO 320VM(AC) RATING TA = -55oC TO 85oC V275LA20A V250LA20A V230LA20A
V300LA20A V320LA20A 1,000 900 800 700 600 500 400 300 200 10-3
1,000 V575LA10 V510LA10 V480LA10 V385LA10 10-3 10-2 10-1 100 101 PEAK AMPERES (A) 102 103 104
V175LA10A V150LA10A V140LA10A V130LA10A 10-2 10-1 100 101 102 PEAK AMPERES (A) 103 104
500
FIGURE 7. CLAMPING VOLTAGE FOR V300LA10 - V660LA10
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FIGURE 8. CLAMPING VOLTAGE FOR V130LA10A - V320LA20A
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Varistor Products
Line Voltage Operation, Radial Lead
LA Varistor Series
Transient V-I Characteristics Curves
5,000 MAXIMUM CLAMPINGVOLTAGE MODEL SIZE 14mm 385 TO 1000VM(AC) RATING TA = -55oC TO 85oC 3,000 V660LA50A 2,000 V625LA40A
(Continued)
3,000 MAXIMUM CLAMPINGVOLTAGE MODEL SIZE 20mm 130 TO 275VM(AC) RATING TA = -55oC TO 85oC
V1000LA80A 2,000 MAXIMUM PEAKVOLTS (V)
MAXIMUM PEAKVOLTS (V)
2
VARISTOR PRODUCTS
103 104 V230LA40A V140LA20A 300 200 103 104 1,000 900 800 700 600 500 400 300
1,000 700 500 V575LA40A V510LA40A V480LA40A V420LA20A V385LA20A 10-4 10-3 10-2 10-1 100 101 PEAK AMPERES (A) 102 103 104
V275LA40A V250LA40A V175LA20A
V150LA20A V130LA20A 10-2 10-1 100 101 102 PEAK AMPERES (A)
300
200 10-3
FIGURE 9. CLAMPING VOLTAGE FOR V385LA20A V1000LA80A
3,000
FIGURE 10. CLAMPING VOLTAGE FOR V130LA20A - V275LA40A
MAXIMUM PEAKVOLTS (V)
MAXIMUM CLAMPINGVOLTAGE MODEL SIZE 20mm 2,000 130 TO 275VM(AC) RATING TA = -55oC TO 85oC MAXIMUM PEAKVOLTS (V) 10-1 100 101 102 PEAK AMPERES (A) 103 104
3,000
MAXIMUM CLAMPINGVOLTAGE MODEL SIZE 20mm 2,000 140 TO 230VM(AC) RATING TA = -55oC TO 85oC
1,000 900 800 700 600 500 400 300
1,000
V275LA40B V250LA40B V150LA20B V130LA20B
500
200 10-3
10-2
10-3
10-2
10-1 100 101 102 PEAK AMPERES (A)
FIGURE 11. CLAMPING VOLTAGE FOR V130LA20B - V275LA40B
FI GURE 12. CLAMPING VOLTAGE FOR V140LA20A - V230LA40A
5,000 MAXIMUM CLAMPINGVOLTAGE MODEL SIZE 20mm 300 TO 1000VM(AC) RATING TA = -55oC TO 85oC V625LA80B V660LA100B V575LA80B V510LA80B V480LA80B 1,000 V420LA40B V385LA40B V320LA40B V300LA40A 10-3 10-2 10-1 100 101 102 PEAK AMPERES (A) 103 104 V1000LA160B
MAXIMUM PEAKVOLTS (V)
3,000
2,000
500
FIGURE 13. CLAMPING VOLTAGE FOR V300LA40A - V1000LA160B
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Varistor Products
Line Voltage Operation, Radial Lead
LA Varistor Series
Pulse Rating Curves
2,000 1 1,000 500 SURGE CURRENT (A) 200 100 50 20 10 5 2 1 20 100 1,000 IMPULSE DURA TION ( s) 10,000 INDEFINITE 2 10 102 103 104 105 106 MODEL SIZE 7mm V130LA1 - V480LA7 5,000 1 2,000 1,000 SURGE CURRENT (A) 500 200 100 50 20 10 5 2 20 100 1,000 IMPULSE DURA TION ( s) 10,000 INDEFINITE 2 10 MODEL SIZE 10mm V130LA5 - V660LA10 102 3 10 104 105 106
FIGURE 14. SURGE CURRENT RATING CURVES FOR V130LA1 - V480LA7
5,000 2,000 1,000 SURGE CURRENT (A) 500 200 100 50 20 10 5 2 20 INDEFINITE 2 10 1
FIGURE 15. SURGE CURRENT RATING CURVES FOR V130LA5 - V660LA10
5,000 1 2 10
MODEL SIZE 14mm V130LA10A - V320LA20A SURGE CURRENT (A) 102 3 10 104 105 106
2,000 1,000 500 200 100 50 20 10 5 2 20
MODEL SIZE 14mm V385LA20A - V1000LA80A 102 3 10 104 105 106
INDEFINITE
100 1,000 IMPULSE DURA TION ( s)
10,000
100 1,000 IMPULSE DURA TION ( s)
10,000
FIGURE 16. SURGE CURRENT RATING CURVES FOR V130LA10A - V320LA20A
10,000 5,000 2,000 SURGE CURRENT (A) 1,000 500 200 100 50 20 10 5 2 1 20 100 1,000 IMPULSE DURA TION ( s) 10,000 INDEFINITE 1 2 MODEL SIZE 20mm V130LA20A - V320LA40B
FIGURE 17. SURGE CURRENT RATING CURVES FOR V385LA20A - V1000LA80A
10,000 1 2 MODEL SIZE 20mm V385LA40B - V1000LA160B 102 3 10 104 105 106
10
5,000 2,000 SURGE CURRENT (A) 1,000 500 200 100 50 20 10 5 2 1 20
102 3 10 104 105 106
10
INDEFINITE
100
1,000 IMPULSE DURA TION ( s)
10,000
FIGURE 18. SURGE CURRENT RATING CURVES FOR V130LA20A - V320LA40B
FIGURE 19. SURGE CURRENT RATING CURVES FOR V385LA40B - V1000LA160B
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. 56
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Line Voltage Operation, Radial Lead
LA Varistor Series
Tape and Reel Specifications 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 under-crimped leads
2
VARISTOR PRODUCTS
MODEL SIZE SYMBOL P P0 P1 P2 F h W W0 W1 W2 H H0 H1 D0 t L p PARAMETER Pitch of Component Feed Hole Pitch Feed Hole Center to Pitch Hole Center to Component Center Lead to Lead Distance Component Alignment Tape Width Hold Down Tape Width Hole Position Hold Down Tape Position Height from Tape Center to Component Base Seating Plane Height Component Height Feed Hole Diameter Total Tape Thickness Length of Clipped Lead Component Alignment 7mm 12.7 1.0 12.7 0.2 3.85 0.7 6.35 0.7 5.0 0.8 2.0 Max 18.0 + 1.0 18.0 - 0.5 6.0 0.3 9.0 + 0.75 9.0 - 0.50 0.5 Max 18.0 + 2.0 18.0 - 0.0 16.0 0.5 32.0 Max 4.0 0.2 0.7 0.2 11.0 Max 3o Max 1.00mm 10mm 25.4 1.0 12.7 0.2 2.6 0.7 6.35 0.7 7.5 0.8 2.0 Max 18.0 + 1.0 18.0 - 0.5 6.0 0.3 9.0 + 0.75 9.0 - 0.50 0.5 Max 18.0 + 2.0 18.0 - 0.0 16.0 0.5 36.0 Max 4.0 0.2 0.7 0.2 11.0 Max 3o Max 1.00mm 14mm 25.4 1.0 12.7 0.2 2.6 0.7 6.35 0.7 7.5 0.8 2.0 Max 18.0 + 1.0 18.0 - 0.5 6.0 0.3 9.0 + 0.75 9.0 - 0.50 0.5 Max 18.0 + 2.0 18.0 - 0.0 16.0 0.5 40.0 Max 4.0 0.2 0.7 0.2 11.0 Max 3o Max 1.00mm 20mm 25.4 1.0 12.7 0.2 2.6 0.7 6.35 0.7 7.5 0.8 2.0 Max 18.0 + 1.0 18.0 - 0.5 12.0 0.3 9.0 + 0.75 9.0 - 0.50 0.5 Max 18.0 + 2.0 18.0 - 0.0 16.0 0.5 46.5 Max 4.0 0.2 0.7 0.2 11.0 Max 3o Max
NOTE: Dimensions are in mm.
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Varistor Products
Line Voltage Operation, Radial Lead
LA Varistor Series
Tape and Reel Ordering Information
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. Example:
STANDARD MODEL V130LA2 CRIMPED LEADS V130LT2 STRAIGHT LEADS V130LS2 UNDERCRIMPED LEADS V130LU2
Standard Bulk Pack Quantity
STANDARD BULK PACK QUANTITY VARISTOR VOLTAGE MODEL 130-275 300-460 510-625 VARISTOR MODEL SIZE 7mm 1500 1500 1500 10mm 1000 700 700 14mm 700 600 500 20mm 500 400 400
VARISTOR MODEL SIZE 7mm SYMBOL A VOLTAGE MODEL V130LAV320LA V385LAV1000LA flD All MIN MAX 12 (0.472) 13 (0.0512) 9 (0.354) MIN 6.5 (0.256) 10mm MAX 16 (0.630) 17 (0.689) 12.5 (0.492) 8.5 (0.335) 14mm MIN 6.5 (0.256) MAX 20 (0.787) 20.5 (0.807) 17 (0.669) 8.5 (0.335) 20mm MIN 6.5 (0.256) (Note 2) 1.5 (0.059) 2.5 (0.098) 0.76 (0.030) (Note 2) MAX 26.5 (1.043) 28 (1.102) 23 (0.906) 8.5 (0.335) (Note 2) 3.5 (0.138) 5.5 (0.217) 5.6 (0.220) 7.5 (0.287) 10.8 (0.425) 0.86 (0.034) (Note 2)
e
All
4 (0.157) 6 (0.236)
e1
V130LAV320LA V385AV1000LA
1.5 (0.059) 2.5 (0.098) 0.585 (0.023)
3.5 (0.138) 5.5 (0.217) 5.6 (0.220) 7.5 (0.287) 0.685 (0.027)
1.5 (0.059) 2.5 (0.098) 0.76 (0.030)
3.5 (0.138) 5.5 (0.217) 5.6 (0.220) 7.5 (0.287) 0.86 (0.034)
1.5 (0.059) 2.5 (0.098) 0.76 (0.030)
3.5 (0.138) 5.5 (0.217) 5.6 (0.220) 7.5 (0.287) 10.8 (0.425) 0.86 (0.034)
E
V130LAV320LA V385LAV660LA V1000LA
flb
All (Note 3)
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).
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Varistor Products
Line Voltage Operation, Radial Lead
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.
2
*Seating plane interpretation per IEC-717 VARISTOR PRODUCTS
MAX 29.0 (1.142) 4.69 (0.185)
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CRIMPED AND TRIMMED LEAD
VARISTOR MODEL SIZE 7mm SYMBOL A LTRIM 2.41 (0.095) MIN MAX 15 (0.591) 4.69 (0.185) MIN 2.41 (0.095) 10mm MAX 19.5 (0.768) 4.69 (0.185) MIN 2.41 (0.095) 14mm MAX 22.5 (0.886) 4.69 (0.185) MIN 2.41 (0.095) 20mm
NOTE: Dimensions in millimeters, inches in parentheses.
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 10/1mm lead spacing on 20mm diameter models only; append standard model numbers by adding "X10". Example:
STANDARD CATALOG MODEL V130LA20A ORDER AS: V130LA20AX10
* For crimped leads without trimming and any variations to the above, contact Littelfuse.
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.
V XXX LA XX X
VARISTOR CLAMP VOLTAGE VARIANT (Where Applicable) RELATIVE ENERGY INDICATOR (One or Two Digits)
VM(AC) 130V to 1,000V SERIES DESIGNATOR/ LEAD STYLE DESIGNATOR LC = Crimped and Clipped LS = Straight LT = Crimped LU = Under Crimped
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