V18ZA1 Littelfuse Inc, V18ZA1 Datasheet - Page 4

• Manufacturer Part Number: V18ZA1
• Description: VARISTOR 18V .8J 7MM RADIAL ZA
• Manufacturer: Littelfuse Inc
• Series: ZAr

Specifications of V18ZA1

• Energy: 0.80J
• Varistor Voltage: 21.6V
• Current-surge: 250A
• Number Of Circuits: 1
• Maximum Ac Volts: 10VAC
• Maximum Dc Volts: 14VDC
• Package / Case: Disc 7mm
• Technology: Metal Oxide
• Capacitance Value: 2700pF
• Clamping Current: 2.5A
• Clamping Voltage: 36V
• Lead Style: Radial
• Ac Voltage Rating (max): 10VAC
• Dc Voltage Rating (max): 14VDC
• Operating Temp Range: -55C to 85C
• Mounting: Through Hole
• Surge Current (max): 250A
• Lead Spacing: 6mm
• Product Depth (mm): 5mm
• Product Height (mm): 12mm
• Product Diameter (mm): 9mm
• Product: MOV
• Voltage Rating Dc: 14 V
• Voltage Rating Ac: 10 V
• Peak Surge Current: 250 A
• Surge Energy Rating: 0.8 J
• Capacitance: 2000 pF
• Operating Temperature Range: - 55 C to + 85 C
• Dimensions: 7 mm Dia.
• Termination Style: Radial
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Compliant, Lead free / RoHS Compliant

V8ZA05(P) - V68ZA05(P)
V360ZA05(P) - V750ZA05(P)
ZA Varistor Series
Figure 3
Figure 5
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 the diagram above. 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.
Maximum Clamping Voltage for 5mm Parts
Figure 1
100
90
80
70
60
50
40
30
20
10
3000
2000
1000
600
500
400
300
200
100
0
500
90
80
70
60
50
40
30
20
10
0.0001
-55
10
V68ZA05(P)
V56ZA05(P)
V47ZA05(P)
V39ZA05(P)
V33ZA05(P)
V27ZA05(P)
V22ZA05(P)
V18ZA05(P)
V12ZA05(P)
V8ZA05(P)
-3
V750ZA05(P)
V715ZA05(P)
V680ZA05(P)
V620ZA05(P)
V470ZA05(P)
V430ZA05(P)
V390ZA05(P)
V360ZA05(P)
50
MAX CLAMPING VOLTAGE
MODEL SIZE 5mm
8 TO 68V
T
A
= -55
0.001
60
10
o
N(DC)
-2
C TO 85
AMBIENT TEMPERATURE (
70
0.01
RATING
10
80
o
PEAK AMPERES (A)
PEAK AMPERES (A)
C
-1
0.1
90
MAX CLAMPING VOLTAGE
MODEL SIZE 5mm
360 TO 750V
T
10
A
100
0
= -55
1
110
o
C TO 85
10
N(DC)
o
120
1
C)
10
Radial Lead Varistors > ZA Series
o
C
RATING
130
10
100
2
140
1000
150
10
3
Revision: September 22, 2010
Varistor Products
V82ZA05(P) - V33ZA05(P)
Figure 4
Peak Pulse Current Test Waveform
Figure 2
2000
1000
0
T
T
Example - For an 8/20 μ
500
200
100
0.0001
O
1
1
2
100
1
90
50
10
= Rise Time = 1.25 x T
= Decay Time
8μs = T
20μs = T
0.001
Please refer to www.littelfuse.com/series/za.html for current information.
1
V330ZA05(P)
V270ZA05(P)
V240ZA05(P)
V220ZA05(P)
V205ZA05(P)
V180ZA05(P)
V150ZA05(P)
V120ZA05(P)
2
T
= Rise Time
T
= Decay Time
1
0.01
T
PEAK AMPERES (A)
2
0.1
Specifications are subject to change without notice.
MAX CLAMPING VOLTAGE
MODEL SIZE 5mm
82 TO 330V
T
1
A
= -55
TIME
o
10
C TO 85
N(DC)
100
o
RATING
C
©2010 Littelfuse, Inc.
1000