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Varistor Products
Low to Medum Voltage, Radial Lead
RoHS Pb ZA Varistor Series
DVE
®
The ZA Series of transient voltage surge suppressors are radial-lead
varistors (MOVs) designed for use in the protection of low and medium-
voltage circuits and systems. Typical applications include motor control,
telecom, automotive systems, solenoid, and power supply circuits to
protect circuit board components and maintain data integrity.
These devices are available in five model sizes: 5mm, 7mm, 10mm,
14mm and 20mm, and feature a wide VDC voltage range of 5.5V to 615V.
See ZA Series Device Ratings and Specifications table for part number
and brand information.
Features
• Lead-free and RoHS compliant option available. Please see the
device and ratings specifications table for more information.
2
• Wide Operating Voltage Range VM(AC)RMS . . . . . . . . . .4V to 460V
• DC Voltage Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5.5V to 615V
• No Derating Up to 85oC Ambient
• 5 Model Sizes Available . . . . . 5, 7, 10, 14, and 20mm
• Radial-Lead Package for Hard-Wired or Printed Circuit
Board Designs
• Available in Tape and Reel or Bulk Pack
• Standard Lead Form Options
NEW LEAD-FREE AND DataShee
RoHSDataSheet4U.com COMPLIANT PARTS
AVAILABLE
AGENCY APPROVALS FOR STANDARD PARTS:
Recognized under the components program of Underwriters Laboratories.
CECC and VDE certified.
Agency File Numbers: UL E135010, UL E75961, VDE 116895E, CECC
42201.
AGENCY APPROVALS FOR LEAD-FREE AND RoHS COMPLI-
ANT PARTS:
Selected parts recognized under the components program of Underwriters
Laboratories and other parts pending approval. All parts CECC and VDE cer-
tified. See details below.
Agency File Numbers: UL E135010 (pending approval), UL E75961
(selected parts recognized), VDE 116895E, CECC 42201-006.
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Varistor Products
Low to Medum Voltage, Radial Lead
RoHS Pb ZA Varistor Series
Absolute Maximum Ratings For ratings of individual members of a series, see Device Ratings and Specifications chart.
Continuous:
Steady State Applied Voltage:
ZA SERIES
AC Voltage Range (VM(AC)RMS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 to 460
DC Voltage Range (VM(DC)) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5 to 615
Transient:
Peak Pulse Current (ITM)
For 8/20µs Current Wave (See Figure 2). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50 to 6500
Single Pulse Energy Range (Note 1)
For 10/1000µs Current Wave (WTM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.1 to 52
Operating Ambient Temperature Range (TA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55 to85
Storage Temperature Range (TSTG) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55 to125
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)
Insulation Resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1000
UNITS
V
V
A
J
oC
oC
%/oC
V
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 (Note 1)
et4U.com
RoHS Pb
LEAD-FREE
AND RoHS
COMPLIANT
MODELS
PART
NUMBER BRANDING
STANDARD
MODELS
PART
NUMBER BRANDING
MODEL
SIZE
DISC
DIA. (mm)
V8ZA05P PZ08
V8ZA05
Z08
5
V8ZA1P
P08Z1
V8ZA1
08Z1
7
V8ZA2P
P08Z2
V8ZA2
08Z2
10
V12ZA05P PZ12
V12ZA05
Z12
5
V12ZA1P P12Z1
V12ZA1
12Z1
7
V12ZA2P P12Z2
V12ZA2
12Z2
10
V18ZA05P PZ18
V18ZA05
Z18
5
V18ZA1P P18Z1
V18ZA1
18Z1
7
V18ZA2P P18Z2
V18ZA2
18Z2
10
V18ZA3P P18Z3
V18ZA3
18Z3
14
V18ZA40P P18Z40 V18ZA40 18Z40
20
V22ZA05P
V22ZA1P
V22ZA2P
V22ZA3P
V24ZA50P
PZ22
P22Z1
P22Z2
P22Z3
P24Z50
V22ZA05
V22ZA1
V22ZA2
V22ZA3
V24ZA50
Z22
22Z1
22Z2
22Z3
24Z50
5
7
10
14
20
V27ZA05P
V27ZA1P
V27ZA2P
V27ZA4P
V27ZA60P
PZ27
P27Z1
P27Z2
P27Z4
P27Z60
V27ZA05
V27ZA1
V27ZA2
V27ZA4
V27ZA60
Z27
27Z1
27Z2
27Z4
27Z60
5
7
10
14
20
DataSheet4SeUe.Pcaogem70 for NOTES
MAXIMUM RATING (85 oC)
CONTINUOUS
TRANSIENT
DataSheet4U.com PEAK
ENERGY 10 CURRENT
VRMS
VDC
x 1000µs 8 x 20µs
VM(AC)
(V)
4
4
4
6
6
6
10
10
10
10
10
VM(DC)
(V)
5.5
5.5
5.5
8
8
8
14
14
14
14
14
WTM
(J)
0.1
0.4
0.8
0.14
0.6
1.2
0.17
0.8
1.5
3.5
80 (Note 2)
ITM
(A)
50
100
250
50
100
250
100
250
500
1000
2000
14 18
0.2
100
14 18
0.9
250
14 18
2
500
14 18 4 1000
14 18 100 (Note 2) 2000
(Note 4)
17 22
0.25
100
17 22
1
250
17 22
2.5
500
17 22 5 1000
17 22 120 (Note 2) 2000
SPECIFICATIONS (25 oC)
VARISTOR VOLT-
AGE AT 1mA DC
TEST CURRENT
VNOM
MIN
VNOM
MAX
(V)
6 11
6 11
6 11
9 16
9 16
9 16
14.4
21.6
14.4
21.6
14.4
21.6
14.4 21.6
14.4
(Note 3)
21.6
18.7
26
18.7
26
18.7
26
18.7
26
19.2
(Note 3)
26
23 31.1
23 31.1
23 31.1
23 31.1
23
(Note 3)
31.1
MAXIMUM
CLAMPING
VOLTAGE
8 x 20µs
TYPICAL
CAPACI-
TANCE
f = 1MHz
VC IPK
(V) (A)
30 1
22 2.5
20 5
37 1
34 2.5
30 5
36 1
36 2.5
36 5
36 10
37 20
C
(pF)
1400
3000
7500
1200
2500
6000
1000
2000
5000
11000
22000
43 1
43 2.5
43 5
43 10
43 20
800
1600
4000
9000
18000
53 1
53 2.5
53 5
53 10
50 20
600
1300
3000
7000
13000
68
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Varistor Products
Low to Medum Voltage, Radial Lead
RoHS Pb ZA Varistor Series
Device Ratings and Specifications (Note 1) (Continued)
et4U.com
RoHS Pb
LEAD-FREE
AND RoHS
COMPLIANT
MODELS
PART
NUMBER BRANDING
STANDARD
MODELS
PART
NUMBER BRANDING
MODEL
SIZE
DISC
DIA. (mm)
V33ZA05P PZ33
V33ZA05 Z33
5
V33ZA1P P33Z1
V33ZA1
33Z1
7
V33ZA2P P33Z2
V33ZA2
33Z2
10
V33ZA5P P33Z5
V33ZA5
33Z5
14
V33ZA70P P33Z70 V33ZA70 33Z70
20
V36ZA80P P36Z80 V36ZA80 36Z80
20
V39ZA05P
V39ZA1P
V39ZA3P
V39ZA6P
V39ZA20P
V47ZA05P
V47ZA1P
V47ZA3P
V47ZA7P
V47ZA20P
V56ZA05P
V56ZA2P
V56ZA3P
V56ZA8P
V56ZA20P
V68ZA05P
V68ZA2P
V68ZA3P
V68ZA10P
V68ZA20P
V82ZA05P
V82ZA2P
V82ZA4P
V82ZA12P
V100ZA05P
V100ZA3P
V100ZA4P
V100ZA15P
PZ39
P39Z1
P39Z3
P39Z6
P39Z20
PZ47
P47Z1
P47Z3
P47Z7
P47Z20
PZ56
P56Z2
P56Z3
P56Z8
P56Z20
PZ68
P68Z2
P68Z3
P68Z10
P68Z20
PZ82
P82Z2
P82Z4
P82Z12
PZ100
P100Z
P100Z4
P100Z15
V39ZA05
V39ZA1
V39ZA3
V39ZA6
V39ZA20
V47ZA05
V47ZA1
V47ZA3
V47ZA7
V47ZA20
V56ZA05
V56ZA2
V56ZA3
V56ZA8
V56ZA20
V68ZA05
V68ZA2
V68ZA3
V68ZA10
V68ZA20
V82ZA05
V82ZA2
V82ZA4
V82ZA12
V100ZA05
V100ZA3
V100ZA4
V100ZA15
Z39
39Z1
39Z3
39Z6
39Z20
Z47
47Z1
47Z3
47Z7
47Z20
Z56
56Z2
56Z3
56Z8
56Z20
Z68
68Z2
68Z3
68Z10
68Z20
Z82
82Z2
82Z4
82Z12
Z100
100Z
100Z4
100Z15
5
7
10
14
20
5
7
10
14
20
5
7
10
14
20
5
7
10
14
20
5
7
10
14
5
7
10
14
MAXIMUM RATING (85 oC)
CONTINUOUS
TRANSIENT
VRMS
VDC
PEAK
ENERGY 10 CURRENT
x 1000µs 8 x 20µs
VM(AC)
(V)
20
20
20
20
21
VM(DC)
(V)
26
26
26
26
27
WTM
(J)
0.3
1.2
3
6
150 (Note 2)
ITM
(A)
100
250
500
1000
2000
23 31 160 (Note 2) 2000
25 31
0.3
25 31
1.2
25 31
3
D2a5taShee3t14U.com 6
25 31
20
30 38
0.4
30 38
1.8
30 38
4.5
30 38
8.8
30 38
23
35 45
0.5
35 45
2.3
35 45
5.5
35 45
10
35 45
30
40 56
0.6
40 56
3
40 56
6.5
40 56
13
40 56
33
50 68
2
50 68
4
50 68
8
50 68
15
60 81
2.5
60 81
5
60 81
10
60 81
20
100
250
500
1000
2000
100
250
500
1000
2000
100
250
500
1000
2000
100
250
500
1000
2000
400
1200
2500
4500
400
1200
2500
4500
SPECIFICATIONS (25oC)
VARISTOR VOLT-
AGE AT 1mA DC
TEST CURRENT
VNOM
MIN
VNOM
MAX
(V)
29.5 38
29.5 36.5
29.5 36.5
29.5 36.5
29.5
(Note 3)
36.5
32
(Note 3)
40
35 46
35 43
35 43
35 43
35 43
42 55
42 52
42 52
42 52
42 52
50 66
50 62
50 62
50 62
50 62
61 80
61 75
61 75
61 75
61 75
73 97
73 91
73 91
73 91
90 117
90 110
90 110
90 110
MAXIMUM
CLAMPING
VOLTAGE
8 x 20µs
VC IPK
(V) (A)
65 1
65 2.5
65 5
65 10
58 20
63 20
79 1
79 2.5
76 5
76 10
76 20
93 1
93 2.5
93 5
93 10
93 20
110 1
110 2.5
110 5
110 10
110 20
135 1
135 2.5
135 5
135 10
135 20
135 5
135 10
135 25
145 50
165 5
165 10
165 25
175 50
TYPICAL
CAPACI-
TANCE
f = 1MHz
C
(pF)
500
1100
2700
6000
13000
2
12000
500
1100
2700
6000
12000
400
800
2000
4500
11000
360
700
1800
3900
10000
300
600
1500
3300
10000
240
500
1100
2500
180
400
900
2000
DataShee
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Varistor Products
Low to Medum Voltage, Radial Lead
RoHS Pb ZA Varistor Series
Device Ratings and Specifications (Note1) (Continued)
RoHS Pb
LEAD-FREE
AND RoHS
COMPLIANT
MODELS
PART
NUMBER BRANDING
STANDARD
MODELS
PART
NUMBER BRANDING
MODEL
SIZE
DISC
DIA. (mm)
MAXIMUM RATING (85 oC)
CONTINUOUS
TRANSIENT
VRMS
VDC
PEAK
ENERGY 10 CURRENT
x 1000µs 8 x 20µs
VM(AC)
(V)
VM(DC)
(V)
WTM
(J)
ITM
(A)
SPECIFICATIONS (25oC)
VARISTOR VOLT-
AGE AT 1mA DC
TEST CURRENT
VNOM
MIN
VNOM
MAX
(V)
MAXIMUM
CLAMPING
VOLTAGE
8 x 20µs
VC IPK
(V) (A)
TYPICAL
CAPACI-
TANCE
f = 1MHz
C
(pF)
V120ZA05P PZ120
V120ZA05 Z120
5 75 102 3
400
108 138 205 5
140
V120ZA1P P120Z
V120ZA1 120Z
7 75 102 6
1200
108 132 205 10 300
V120ZA4P P120Z4 V120ZA4 120Z4
10 75 102 12
2500
108 132 200 25 750
V120ZA6P P120Z6 V120ZA6 120Z6
14 75 102 22
4500
108
132 210 50
1700
V120ZA20P P120Z20 V120ZA20 120Z20 20 75 102 33
6500
108
132 210 100
1500
V150ZA05P PZ150
V150ZA05 Z150
5 92 127 4
400
135 173 250 5
120
V150ZA1P PZ051
V150ZA1 Z051
7 95 127 8
1200
135 165 250 10 250
V150ZA4P P150Z4 V150ZA4 150Z4
10 95 127 15
et4U.comVV115500ZZAA82P0P
P150Z8
P150Z20
V150ZA8
V150ZA20
150Z8
150Z20
14
20
95 127
95 127
20
45
2500
4500
6500
135 165 250 25 600
135
165 250 50
1400
135
165 250 100
1000
V180ZA05P PZ180
V180ZA1P P180Z
V180ZA05
V180ZA1
Z180
180Z
5 110 153
5
400
162 207 295 5
100
7 115DataS1h53eet4U.c1o0m 1200 162 198 300 10 200
V180ZA5P P180Z5 V180ZA5 180Z5
10 115 153
18
2500
162 198 300 25 500
V180ZA10P P180Z10 V180ZA10 180Z10
14 115 153
35
4500
162
198 300 50
1100
V180ZA20P P180Z20 V180ZA20 180Z20
20 115 153
52
6500
162
198 300 100
2400
V205ZA05P
V220ZA05P
V240ZA05P
V270ZA05P
V330ZA05P
V360ZA05P
V390ZA05P
V430ZA05P
V470ZA05P
V620ZA05P
PZ205
PZ220
PZ240
PZ270
PZ330
PZ360
PZ390
PZ430
PZ470
PZ620
V205ZA05
V220ZA05
V240ZA05
V270ZA05
V330ZA05
V360ZA05
V390ZA05
V430ZA05
V470ZA05
V620ZA05
Z205
Z220
Z240
Z270
Z330
Z360
Z390
Z430
Z470
Z620
5 130 170 5.5
5 140 180
6
5 150 200
7
5 175 225 7.5
5 210 275
9
5 230 300 9.5
5 250 330 10
5 275 369 11
5 300 385 12
5 385 505 13
400
184 226 340 5
100
400 198 253 360 5 90
400 216 264 395 5 80
400 243 311 455 5 70
400 297 380 540 5 60
400 324 396 595 5 55
400 351 449 650 5 50
400 387 495 710 5 45
400 420 517 775 5 35
400 558 682 1025 5 33
V680ZA05P PZ680
V680ZA05 Z680
5 420 560 14
400 610 748 1120 5 32
V715ZA05P PZ715
V715ZA05 Z715
5
440 585
15.5
400 643 787 1180 5 31
V750ZA05P PZ750
V750ZA05 Z750
5 460 615 17
400 675 825 1240 5 30
NOTES:
1. Average power dissipation of transients not to exceed 0.2W, 0.25W, 0.4W, 0.6W or 1W for model sizes 5mm, 7mm, 10mm, 14mm and 20mm,
respectively.
2. Energy rating for impulse duration of 30ms minimum to one half of peak current (auto load dump).
3. 10mA DC test current.
4. Also rated to withstand 24V for 5 minutes.
5. Higher voltages available, contact Littelfuse.
Recognized to UL1449, “Transient Voltage Surge Suppressors” File #E75961.
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Varistor Products
Low to Medum Voltage, Radial Lead
RoHS Pb ZA Varistor Series
Power Dissipation Ratings
Should transients occur in rapid succession, the average power dissipation
required is simply 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. Furthermore, the operating values need to be derated
at high temperatures as shown in Figure 1. Because varistors can only
dissipate a relatively small amount of average power they are, therefore,
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
et4U.com
100
90
50
10
O1
T
T1
T2
O1 = Virtual Origin of Wave
T = Time From 10% to 90% of Peak
DataSheet4UTT.c12o==mVViirrttuuaall
Front
Time
time =
to Half
1.25 •
Value
t
(Impulse
Duration)
Example: For an 8/20µs Current Waveform:
8µs = T1 = Virtual Front Time
20µs = T2 = Virtual Time to Half Value
TIME
FIGURE 2. PEAK PULSE CURRENT TEST WAVEFORM
2
DataShee
Transient V-I Characteristics Curves
600
500
MAX CLAMPINGVOLTAGE
MODEL SIZE 5mm
400 8 TO 68VN(DC) RATING
300 TA = -55oC TO 85oC
200
100
90
80
70
60
V68ZA05(P)
V56ZA05(P)
V47ZA05(P)
50 V39ZA05(P)
40
V33ZA05(P)
V27ZA05(P)
30
V22ZA05(P)
V18ZA05(P)
20 V12ZA05(P)
V8ZA05(P)
10
10-3
10-2
10-1
100
101 102
103
PEAK AMPERES (A)
DataSheet4U.cFoImGURE 3. CLAMPING VOLTAGE FOR V8ZA05(P) - V68ZA05(P)
2000
1000
500
V330ZA05(P)
V270ZA05(P)
V240ZA05(P)
V220ZA05(P)
V205ZA05(P)
V180ZA05(P)
V150ZA05(P)
V120ZA05(P)
MAX CLAMPING VOLTAGE
MODEL SIZE 5mm
82
TA
T=O-5353o0CVTNO(DC85) oRCATING
200 V1V0802ZZAA0055((PP))
100
0.0001 0.001
0.01 0.1 1 10
PEAK AMPERES (A)
100 1000
FIGURE 4. CLAMPINGVOLTAGE FOR V82ZA05(P) - V33ZA05(P)
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