4-24
File Number
2190.6
1-800-999-9445 or 1-847-824-1188
|
Copyright
©
Littelfuse, Inc. 1999
LA Series
Radial Lead Metal-Oxide Varistors for Line
Voltage Operation
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 V
M(AC)RMS
voltage range from 130V to 1000V, and an energy
absorption capability up to 360J. Some LA series model
numbers are available with clamping voltage selections,
designated by a model number suffix of either A or B. The
“A” selection is the standard model; the “B” selection
provides a lower clamping voltage.
See LA Series Device Ratings and Specifications table for
part number and brand information.
Features
• Recognized as “Transient Voltage Surge Suppressors”, UL
File #E75961 to Standard 1449, Second Edition
• Recognized as “Across-The-Line Components”, UL File
#E56529 to Standard 1414
• Recognized as “Protectors for Data Communication and
Fire Alarm Circuits”, UL File #E135010 to
Standard 497B
• VDE Certified. License Number 116895E
• CECC Certified (42201-006)
• Recognized as “Transient Voltage Surge Suppressors”,
CSA File #LR91788 to Standard C22.2 No. 1 - M1981
• Energy Absorption Capability (W
TM
) . . . . . . . Up to 360J
• Wide Operating Voltage Range
V
M(AC)RMS
. . . . . . . . . . . . . . . . . . . . . . . . . 130V to 1000V
• No Derating Up to 85
o
C Ambient
• Available in Tape and Reel or Bulk Pack
Packaging
14MM, 20MM
7MM, 10MM
Data Sheet July 1999
[ /Title
(LA
Series)
/Sub-
ject
(Radial
Lead
Metal-
Oxide
Varis-
tors for
Line
Volt-
age
Opera-
tion)
/Autho
r ()
/Key-
words
(Littel-
fuse,
Inc.,
Sup-
pres-
sion
Prod-
ucts,
TVS,
Tran-
sient
Sup-
pres-
sion,
Protec-
tion,
AC
Line,
AC
ALSO SEE LITTELFUSE
ULTRAMOV AND C-III SERIES
4-25
Series LA Varistors are certified by VDE under License Number 116895E.
Series LA Varistors are listed under UL file #E75961 and E56529 as a recognized component.
Series LA Varistors are listed under CSA file #LR91788 as a recognized component.
Absolute Maximum Ratings
For ratings of individual members of a series, see Device Ratings and Specifications chart
LA SERIES UNITS
Continuous:
Steady State Applied Voltage:
AC Voltage Range (V
M(AC)RMS
) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DC Voltage Range (V
M(DC)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
130 to 1000
175 to 1200
V
V
Transients:
Peak Pulse Current (I
TM
)
For 8/20
µ
s Current Wave (See Figure 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Single Pulse Energy Range
For 10/1000
µ
s Current Wave (W
TM
) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1200 to 6500
11 to 360
A
J
Operating Ambient Temperature Range (T
A
) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55 to 85
o
C
Storage Temperature Range (T
STG
) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55 to 125
o
C
Temperature Coefficient (
α
V) of Clamping Voltage (V
C
) at Specified Test Current . . . . . . . . . . . . . . . . . . <0.01 %/
o
C
Hi-Pot Encapsulation (Isolation Voltage Capability) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(Dielectric must withstand indicated DC voltage for one minute per MIL-STD 202, Method 301)
2500 V
Insulation Resistance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1000 M
Ω
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
PART
NUMBER
MODEL
SIZE
DISC
DIA.
(mm)
DEVICE
MODEL
NUMBER
BRAND-
ING
MAXIMUM RATING (85
o
C) SPECIFICATIONS (25
o
C)
CONTINUOUS TRANSIENT
VARISTOR VOLT-
AGE AT 1mA DC
TEST CURRENT
MAXIMUM
CLAMPING
VOLTAGE
8 x 20
µ
s
TYPICAL
CAPACI-
TANCE
f = 1MHzV
RMS
V
DC
ENERGY
10 x 1000
µ
s
PEAK
CURRENT
8 x 20
µ
s
V
M(AC)
V
M(DC)
W
TM
I
TM
V
NOM
MIN
V
NOM
MAX V
C
I
PK
C
(V) (V) (J) (A) (V) (V) (A) (pF)
V130LA1 7 1301 130 175 11 1200 184 255 390 10 180
V130LA2 7 1302 130 175 11 1200 184 228 340 10 180
V130LA5 10 1305 130 175 20 2500 184 228 340 25 450
V130LA10A 14 130L10 130 175 38 4500 184 228 340 50 1000
V130LA20A 20 130L20 130 175 70 6500 184 228 340 100 1900
V130LA20B 20 130L20B 130 175 70 6500 184 220 325 100 1900
V140LA2 7 1402 140 180 12 1200 198 242 360 10 160
V140LA5 10 1405 140 180 22 2500 198 242 360 25 400
V140LA10A 14 140L10 140 180 42 4500 198 242 360 50 900
V140LA20A 20 140L20 140 180 75 6500 198 242 340 100 1750
V150LA1 7 1501 150 200 13 1200 212 284 430 10 150
V150LA2 7 1502 150 200 13 1200 212 268 395 10 150
V150LA5 10 1505 150 200 25 2500 212 268 395 25 360
V150LA10A 14 150L10 150 200 45 4500 212 268 395 50 800
V150LA20A 20 150L20 150 200 80 6500 212 268 395 100 1600
V150LA20B 20 150L20B 150 200 80 6500 212 243 360 100 1600
V175LA2 7 1752 175 225 15 1200 247 303 455 10 130
V175LA5 10 1755 175 225 30 2500 247 303 455 25 350
V175LA10A 14 175L10 175 225 55 4500 247 303 455 50 700
V175LA20A 20 175L20 175 225 90 6500 247 303 455 100 1400
V230LA4 7 2304 230 300 20 1200 324 396 595 10 100
V230LA10 10 230L 230 300 35 2500 324 396 595 25 250
V230LA20A 14 230L20 230 300 70 4500 324 396 595 50 550
V230LA40A 20 230L40 230 300 122 6500 324 396 595 100 1100
LA Series
4-26
V250LA2 7 2502 250 330 21 1200 354 473 730 10 90
V250LA4 7 2504 250 330 21 1200 354 429 650 10 90
V250LA10 10 250L 250 330 40 2500 354 429 650 25 220
V250LA20A 14 250L20 250 330 72 4500 354 429 650 50 500
V250LA40A 20 250L40 250 330 130 6500 354 429 650 100 1000
V250LA40B 20 250L40B 250 330 130 6500 354 413 620 100 1000
V275LA2 7 2752 275 369 23 1200 389 515 775 10 80
V275LA4 7 2754 275 369 23 1200 389 473 710 10 80
V275LA10 10 275L 275 369 45 2500 389 473 710 25 200
V275LA20A 14 275L20 275 369 75 4500 389 473 710 50 450
V275LA40A 20 275L40 275 369 140 6500 389 473 710 100 900
V275LA40B 20 275L40B 275 369 140 6500 389 453 680 100 900
V300LA2 7 3002 300 405 25 1200 420 565 870 10 70
V300LA4 7 3004 300 405 25 1200 420 517 775 10 70
V300LA10 10 300L 300 405 46 2500 420 517 775 25 180
V300LA20A 14 300L20 300 405 77 4500 420 517 775 50 400
V300LA40A 20 300L40 300 405 165 6500 420 517 775 100 800
V320LA7 7 3207 320 420 25 1200 462 565 850 10 65
V320LA10 10 320L 320 420 48 2500 462 565 850 25 170
V320LA20A 14 320L20 320 420 80 4500 462 565 850 50 380
V320LA40B 20 320L40 320 420 150 6500 462 540 810 100 750
V385LA7 7 3857 385 505 27 1200 558 682 1025 10 60
V385LA10 10 385L 385 505 51 2500 558 682 1025 25 160
V385LA20A 14 385L20 385 505 85 4500 558 682 1025 50 360
V385LA40B 20 385L40 385 505 160 6500 558 682 1025 100 700
V420LA7 7 4207 420 560 30 1200 610 748 1120 10 55
V420LA10 10 420L 420 560 55 2500 610 748 1120 25 140
V420LA20A 14 420L20 420 560 90 4500 610 748 1120 50 300
V420LA40B 20 420L40 420 560 160 6500 610 720 1060 100 600
V460LA7 7 4607 460 615 37 1200 702 858 1130 10 55
V480LA7 7 4807 480 640 35 1200 670 825 1240 10 270
V480LA10 10 480L 480 640 60 2500 670 825 1240 25 120
V480LA40A 14 480L40 480 640 105 4500 670 825 1240 50 270
V480LA80B 20 480L80 480 640 180 6500 670 790 1160 100 550
V510LA10 10 510L 510 675 63 2500 735 910 1350 25 100
V510LA40A 14 510L40 510 675 110 4500 735 910 1350 50 250
V510LA80B 20 510L80 510 675 190 6500 735 860 1280 100 500
V575LA10 10 575L 575 730 65 2500 805 1000 1500 25 90
V575LA40A 14 575L40 575 730 120 4500 805 1000 1500 50 220
V575LA80B 20 575L80 575 730 220 6500 805 960 1410 100 450
V625LA10 10 625L 625 825 67 2500 940 1210 1820 25 80
V625LA40A 14 625L40 625 825 125 4500 940 1210 1820 50 210
V625LA80B 20 625L80 625 825 230 6500 940 1100 1650 100 425
Device Ratings and Specifications
(Continued)
PART
NUMBER
MODEL
SIZE
DISC
DIA.
(mm)
DEVICE
MODEL
NUMBER
BRAND-
ING
MAXIMUM RATING (85
o
C) SPECIFICATIONS (25
o
C)
CONTINUOUS TRANSIENT
VARISTOR VOLT-
AGE AT 1mA DC
TEST CURRENT
MAXIMUM
CLAMPING
VOLTAGE
8 x 20
µ
s
TYPICAL
CAPACI-
TANCE
f = 1MHzV
RMS
V
DC
ENERGY
10 x 1000
µ
s
PEAK
CURRENT
8 x 20
µ
s
V
M(AC)
V
M(DC)
W
TM
I
TM
V
NOM
MIN
V
NOM
MAX V
C
I
PK
C
(V) (V) (J) (A) (V) (V) (A) (pF)
LA Series
4-27
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
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.
1.
V660LA10 10 660L 660 850 70 2500 940 1210 1820 50 70
V660LA50A 14 660L50 660 850 140 4500 940 1210 1820 50 200
V660LA100B 20 660L100 660 850 250 6500 940 1100 1650 100 400
V1000LA80A 14 1000L80 1000 1200 220 4500 1425 1800 2700 50 130
V1000LA160B 20 1000L160 1000 1200 360 6500 1425 1600 2420 100 250
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.
Device Ratings and Specifications
(Continued)
PART
NUMBER
MODEL
SIZE
DISC
DIA.
(mm)
DEVICE
MODEL
NUMBER
BRAND-
ING
MAXIMUM RATING (85
o
C) SPECIFICATIONS (25
o
C)
CONTINUOUS TRANSIENT
VARISTOR VOLT-
AGE AT 1mA DC
TEST CURRENT
MAXIMUM
CLAMPING
VOLTAGE
8 x 20
µ
s
TYPICAL
CAPACI-
TANCE
f = 1MHzV
RMS
V
DC
ENERGY
10 x 1000
µ
s
PEAK
CURRENT
8 x 20
µ
s
V
M(AC)
V
M(DC)
W
TM
I
TM
V
NOM
MIN
V
NOM
MAX V
C
I
PK
C
(V) (V) (J) (A) (V) (V) (A) (pF)
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)
PERCENT OF RATED VALUE
FIGURE 1. CURRENT, ENERGY AND POWER DERATING
CURVE
FIGURE 2. PEAK PULSE CURRENT TEST WAVEFORM
100
90
50
10
O1T
T1
T2
TIME
PERCENT OF PEAK VALUE
O1 = Virtual Origin of Wave
T = Time From 10% to 90% of Peak
T1 = Virtual Front time = 1.25 • t
T2 = Virtual Time to Half Value (Impulse Duration)
Example: For an 8/20µs Current Waveform:
8µs = T1 = Virtual Front Time
20µs = T2 = Virtual Time to Half Value
LA Series
4-28
Transient V-I Characteristics Curves
FIGURE 3. CLAMPING VOLTAGE FOR V130LA1 - V300LA2 FIGURE 4. CLAMPING VOLTAGE FOR V130LA2 - V300LA4
FIGURE 5. CLAMPING VOLTAGE FOR V320LA7 - V480LA7 FIGURE 6. CLAMPING VOLTAGE FOR V130LA5 - V420LA10
FIGURE 7. CLAMPING VOLTAGE FOR V300LA10 - V660LA10 FIGURE 8. CLAMPING VOLTAGE FOR V130LA10A - V320LA20A
200
6,000
5,000
4,000
3,000
1,000
900
800
700
600
500
400
300
10-3 10-2 10-1 100101102104
MAXIMUM PEAK VOLTS (V)
PEAK AMPERES (A)
2,000
103
V150LA1
V130LA1
V300LA2
V275LA2
V250LA2
MAXIMUM CLAMPING VOLTAGE
MODEL SIZE 7mm
130 TO 300VM(AC) RATING
TA = -55oC TO 85oC
10-3 10-2 10-1 100101102104
MAXIMUM PEAK VOLTS (V)
PEAK AMPERES (A)
103
4,000
3,000
2,000
1,000
900
800
700
600
500
400
300
200
100
MAXIMUM CLAMPING VOLTAGE
MODEL SIZE 7mm
130 TO 300VM(AC) RATING
TA = -55oC TO 85oCV300LA4
V275LA4
V250LA4
V230LA4
V130LA2
V140LA2
V150LA2
V175LA2
MAXIMUM CLAMPING VOLTAGE
MODEL SIZE 7mm
TA = -55oC TO 85oC
320 TO 480VM(AC) RATING
V420LA7
V385LA7
V320LA7
V460LA7
V480LA7
10-3 10-2 10-1 100101102104
103
5,000
3,000
2,000
1,000
500
PEAK AMPERES (A)
MAXIMUM PEAK VOLTS (V)
200
6,000
5,000
4,000
3,000
1,000
900
800
700
600
500
400
300
10-3 10-2 10-1 100101102104
MAXIMUM PEAK VOLTS (V)
PEAK AMPERES (A)
2,000
103
V275LA10
V250LA10
MAXIMUM CLAMPING VOLTAGE
MODEL SIZE 10mm
130 TO 420VM(AC) RATING
TA = -55oC TO 85oC
V230LA10
V420LA10
V175LA5
V130LA5
V140LA5
V150LA5
10-3 10-2 10-1 100101102104
103
5,000
3,000
2,000
1,000
500
V575LA10
V510LA10
V480LA10
V385LA10
V300LA10
V320LA10
PEAK AMPERES (A)
V625LA10
V660LA10
MAXIMUM CLAMPING VOLTAGE
MODEL SIZE 10mm
TA = -55oC TO 85oC
300 TO 660VM(AC) RATING
MAXIMUM PEAK VOLTS (V)
200
6,000
5,000
4,000
3,000
1,000
900
800
700
600
500
400
300
10-3 10-2 10-1 100101102104
MAXIMUM PEAK VOLTS (V)
PEAK AMPERES (A)
2,000
103
V275LA20A
V250LA20A
MAXIMUM CLAMPING VOLTAGE
MODEL SIZE 14mm
130 TO 320VM(AC) RATING
TA = -55oC TO 85oC
V230LA20A
V175LA10A
V130LA10A
V140LA10A
V150LA10A
V320LA20A
V300LA20A
LA Series
4-29
FIGURE 9. CLAMPING VOLTAGE FOR V385LA20A -
V1000LA80A
FIGURE 10. CLAMPING VOLTAGE FOR V130LA20A - V275LA40A
FIGURE 11. CLAMPING VOLTAGE FOR V130LA20B - V275LA40B FIGURE 12. CLAMPING VOLTAGE FOR V140LA20A - V230LA40A
FIGURE 13. CLAMPING VOLTAGE FOR V300LA40A - V1000LA160B
Transient V-I Characteristics Curves (Continued)
5,000
3,000
1,000
500
300
10-3 10-2 10-1 100101102104
MAXIMUM PEAK VOLTS (V)
PEAK AMPERES (A)
2,000
103
10-4
V1000LA80A
V660LA50A
V575LA40A
V510LA40A
V480LA40A
V420LA20A
MAXIMUM CLAMPING VOLTAGE
MODEL SIZE 14mm
385 TO 1000VM(AC) RATING
TA = -55oC TO 85oC
V385LA20A
700
V625LA40A
3,000
2,000
1,000
900
800
700
600
500
400
300
200
10-3 10-2 10-1 100101102104
MAXIMUM PEAK VOLTS (V)
PEAK AMPERES (A)
103
V275LA40A
V250LA40A
V150LA20A
V130LA20A
V175LA20A
MAXIMUM CLAMPING VOLTAGE
MODEL SIZE 20mm
130 TO 275VM(AC) RATING
TA = -55oC TO 85oC
3,000
2,000
1,000
900
800
700
600
500
400
300
200
10-3 10-2 10-1 100101102104
MAXIMUM PEAK VOLTS (V)
PEAK AMPERES (A)
103
V275LA40B
V250LA40B
V130LA20B
V150LA20B
MAXIMUM CLAMPING VOLTAGE
MODEL SIZE 20mm
130 TO 275VM(AC) RATING
TA = -55oC TO 85oC
3,000
2,000
500
200
10-3 10-2 10-1 100101102104
MAXIMUM PEAK VOLTS (V)
PEAK AMPERES (A)
1,000
103
MAXIMUM CLAMPING VOLTAGE
MODEL SIZE 20mm
140 TO 230VM(AC) RATING
TA = -55oC TO 85oC
300
V140LA20A
V230LA40A
5,000
3,000
1,000
500
10-3 10-2 10-1 100101102104
MAXIMUM PEAK VOLTS (V)
PEAK AMPERES (A)
2,000
103
V625LA80B
V660LA100B
V1000LA160B
MAXIMUM CLAMPING VOLTAGE
MODEL SIZE 20mm
300 TO 1000VM(AC) RATING
TA = -55oC TO 85oC
V575LA80B
V420LA40B
V385LA40B
V320LA40B
V300LA40A
V510LA80B
V480LA80B
LA Series
4-30
Pulse Rating Curves
FIGURE 14. SURGE CURRENT RATING CURVES FOR
V130LA1 - V480LA7
FIGURE 15. SURGE CURRENT RATING CURVES FOR
V130LA5 - V660LA10
FIGURE 16. SURGE CURRENT RATING CURVES FOR
V130LA10A - V320LA20A
FIGURE 17. SURGE CURRENT RATING CURVES FOR
V385LA20A - V1000LA80A
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.
2,000
1,000
200
100
50
20
10
5
1
2
500
20 100 1,000 10,000
IMPULSE DURATION (µs)
SURGE CURRENT (A)
1
2
10
102104
105
106
MODEL SIZE 7mm
V130LA1 - V480LA7
103
INDEFINITE
5,000
2,000
200
100
50
20
10
5
2
500
20 100 1,000 10,000
IMPULSE DURATION (µs)
SURGE CURRENT (A)
1
2
10 104
105
106
MODEL SIZE 10mm
V130LA5 - V660LA10
103
INDEFINITE
1,000 102
5,000
2,000
200
100
50
20
10
5
2
500
20 100 1,000 10,000
IMPULSE DURATION (µs)
SURGE CURRENT (A)
1
2
10
104
105
106
MODEL SIZE 14mm
V130LA10A - V320LA20A
103
INDEFINITE
1,000 102
5,000
2,000
200
100
50
20
10
5
2
500
20 100 1,000 10,000
IMPULSE DURATION (µs)
SURGE CURRENT (A)
1
2
10
104
105
106
MODEL SIZE 14mm
V385LA20A - V1000LA80A
103
INDEFINITE
1,000 102
10,000
2,000
200
100
50
20
10
5
2
500
20 100 1,000 10,000
IMPULSE DURATION (µs)
SURGE CURRENT (A)
12
104
105
106
MODEL SIZE 20mm
V130LA20A - V320LA40B
103
INDEFINITE
1,000
102
10
5,000
1
10,000
2,000
200
100
50
20
10
5
2
500
20 100 1,000 10,000
IMPULSE DURATION (µs)
SURGE CURRENT (A)
12
104
105
106
MODEL SIZE 20mm
V385LA40B - V1000LA160B
103
INDEFINITE
1,000
102
10
5,000
1
LA Series
4-31
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
SYMBOL PARAMETER
MODEL SIZE
7mm 10mm 14mm 20mm
P Pitch of Component 12.7 ± 1.0 25.4 ± 1.0 25.4 ± 1.0 25.4 ± 1.0
P0Feed Hole Pitch 12.7 ± 0.2 12.7 ± 0.2 12.7 ± 0.2 12.7 ± 0.2
P1Feed Hole Center to Pitch 3.85 ± 0.7 2.6 ± 0.7 2.6 ± 0.7 2.6 ± 0.7
P2Hole Center to Component Center 6.35 ± 0.7 6.35 ± 0.7 6.35 ± 0.7 6.35 ± 0.7
F Lead to Lead Distance 5.0 ± 0.8 7.5 ± 0.8 7.5 ± 0.8 7.5 ± 0.8
∆h Component Alignment 2.0 Max 2.0 Max 2.0 Max 2.0 Max
W Tape Width 18.0 + 1.0
18.0 - 0.5
18.0 + 1.0
18.0 - 0.5
18.0 + 1.0
18.0 - 0.5
18.0 + 1.0
18.0 - 0.5
W0Hold Down Tape Width 6.0 ± 0.3 6.0 ± 0.3 6.0 ± 0.3 12.0 ± 0.3
W1Hole Position 9.0 + 0.75
9.0 - 0.50
9.0 + 0.75
9.0 - 0.50
9.0 + 0.75
9.0 - 0.50
9.0 + 0.75
9.0 - 0.50
W2Hold Down Tape Position 0.5 Max 0.5 Max 0.5 Max 0.5 Max
H Height from Tape Center to Component
Base
18.0 + 2.0
18.0 - 0.0
18.0 + 2.0
18.0 - 0.0
18.0 + 2.0
18.0 - 0.0
18.0 + 2.0
18.0 - 0.0
H0Seating Plane Height 16.0 ± 0.5 16.0 ± 0.5 16.0 ± 0.5 16.0 ± 0.5
H1Component Height 32.0 Max 36.0 Max 40.0 Max 46.5 Max
D0Feed 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
L Length of Clipped Lead 11.0 Max 11.0 Max 11.0 Max 11.0 Max
∆p Component Alignment 3o Max
1.00mm
3o Max
1.00mm
3o Max
1.00mm
3o Max
NOTE: Dimensions are in mm.
LA Series
4-32
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
CRIMPED
LEADS
STRAIGHT
LEADS
UNDER-
CRIMPED
LEADS
V130LA2 V130LT2 V130LS2 V130LU2
Standard Bulk Pack Quantities
VARISTOR
VOLTAGE
MODEL
STANDARD BULK PACK QUANTITY
VARISTOR MODEL SIZE
7mm 10mm 14mm 20mm
130-275 1500 1000 700 500
300-460 1500 700 600 400
510-625 1500 700 500 400
Mechanical Dimensions
SYMBOL
VOLTAGE
MODEL
VARISTOR MODEL SIZE
7mm 10mm 14mm 20mm
MIN MAX MIN MAX MIN MAX MIN MAX
A V130LA-
V320LA
-
-
12
(0.472)
-
-
16
(0.630)
-
-
20
(0.787)
-
-
26.5
(1.043)
V385LA-
V1000LA
-
-
13
(0.0512)
-
-
17
(0.689)
-
-
20.5
(0.807)
-
-
28
(1.102)
ØD All -
-
9 (0.354) -
-
12.5
(0.492)
-
-
17
(0.669)
-
-
23
(0.906)
e All 4 (0.157) 6 (0.236) 6.5
(0.256)
8.5
(0.335)
6.5
(0.256)
8.5
(0.335)
6.5
(0.256)
(Note 2)
8.5
(0.335)
(Note 2)
e1V130LA-
V320LA
1.5
(0.059)
3.5
(0.138)
1.5
(0.059)
3.5
(0.138)
1.5
(0.059)
3.5
(0.138)
1.5
(0.059)
3.5
(0.138)
V385A-
V1000LA
2.5
(0.098)
5.5
(0.217)
2.5
(0.098)
5.5
(0.217)
2.5
(0.098)
5.5
(0.217)
2.5
(0.098)
5.5
(0.217)
E V130LA-
V320LA
-
-
5.6
(0.220)
-
-
5.6
(0.220)
-
-
5.6
(0.220)
-
-
5.6
(0.220)
V385LA-
V660LA
-
-
7.3
(0.287)
-
-
7.3
(0.287)
-
-
7.3
(0.287)
-
-
7.3
(0.287)
V1000LA -
-
-
-
-
-
-
-
-
-
10.8
(0.425)
-
-
10.8
(0.425)
Øb All
(Note 3)
0.585
(0.023)
0.685
(0.027)
0.76
(0.030)
0.86
(0.034)
0.76
(0.030)
0.86
(0.034)
0.76
(0.030)
(Note 2)
0.86
(0.034)
(Note 2)
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).
LA Series
4-33
Additional Lead Style Options
Radial lead types can be supplied with combination
preformed crimp and trimmed leads. This option is supplied
to the dimensions shown.
*Seating plane interpretation per IEC-717
CRIMPED AND TRIMMED LEAD
To order this crimped and trimmed lead style, standard radial
type model numbers are changed by replacing the model
letter “A” with “C”.
Example:
• For crimped leads without trimming and any variations
to the above, contact Littelfuse.
• For 10/±1mm lead spacing on 20mm diameter models
only; append standard model numbers by adding
“X10”.
Example:
Ordering Information
SYMBOL
VARISTOR MODEL SIZE
7mm 10mm 14mm 20mm
MIN MAX MIN MAX MIN MAX MIN MAX
A-
-
15
(0.591)
-
-
19.5 (0.768) -
-
22.5 (0.886) -
-
29.0 (1.142)
LTRIM 2.41 (0.095) 4.69 (0.185) 2.41 (0.095) 4.69 (0.185) 2.41 (0.095) 4.69 (0.185) 2.41 (0.095) 4.69 (0.185)
NOTE: Dimensions in millimeters, inches in parentheses.
STANDARD CATALOG
MODEL ORDER AS:
V130LA2 V130LC2
STANDARD CATALOG
MODEL ORDER AS:
V130LA20A V130LA20AX10
VARISTOR
VM(AC)
130V to 1,000V
CLAMP VOLTAGE VARIANT
(Where Applicable)
SERIES DESIGNATOR/
LEAD STYLE DESIGNATOR
LC = Crimped and Clipped
LS = Straight
LT = Crimped
LU = Under Crimped
V XXX LA XX X
RELATIVE ENERGY INDICATOR
(One or Two Digits)
LA Series