V131DA40 Littelfuse Inc, V131DA40 Datasheet - Page 3

• Manufacturer Part Number: V131DA40
• Description: VARISTOR INDUST 130V 270J DA
• Manufacturer: Littelfuse Inc
• Series: DA/DBr
• Type: MOVr

Specifications of V131DA40

• Package / Case: Chassis Mount
• Number Of Circuits: 1
• Energy: 270J
• Current-surge: 40kA
• Maximum Ac Volts: 130VAC
• Maximum Dc Volts: 175VDC
• Varistor Voltage: 200V
• Voltage Rating Dc: 175 V
• Voltage Rating Ac: 130 V
• Clamping Voltage: 345 V
• Peak Surge Current: 40 KA
• Capacitance: 10000 pF
• Operating Temperature Range: - 55 C to + 85 C
• Mounting: SMD/SMT
• Dimensions: 40 mm Dia.
• Termination Style: Screw
• Brand/series: DA Series
• Current, Peak: 40000 A
• Electric Strength: 5000 V
• Energy Rating: 270 Joules
• Mounting Style: Bolt-Down
• Package: Screw
• Resistance, Insulation: 1000 Megohms
• Technology: Metal Oxide
• Temperature, Operating, Maximum: 85 °C
• Temperature, Operating, Minimum: -55 °C
• Terminal Type: Screw
• Voltage, Ac: 130 VAC
• Voltage, Clamping: 345 V
• Voltage, Dc: 175 VDC
• Voltage, Operating: 110 VAC (Max.) @ 85 °C
• Voltage, Varistor: 228
• Wide Operating Voltage Range Vmacrms: 150 V to 575 V
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Contains lead / RoHS non-compliant

Varistor Products
DA/DB Varistor Series
High Energy Industrial
Power Dissipation Ratings
Should transients occur in rapid succession, the average power dissipa-
tion 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.
Transient V-I Characteristics Curve
88
O
100
1
90
50
10
T
T
1
T
2
FIGURE 3. CLAMPING VOLTAGE FOR V131DA40, V131DB40 - V751DA40, V751DB40
FIGURE 2. PEAK PULSE CURRENT TEST WAVEFORM
6,000
5,000
4,000
3,000
2,000
1,000
TIME
900
800
700
600
500
400
300
200
10
-2
V421DA/DB40
V151DA/DB40
V131DA/DB40
MAXIMUM CLAMPING VOLTAGE
DISC SIZE 40mm
130 TO 750 VM(AC) RATING
V481DA/DB40
V511DA/DB40
10
-1
w w w . l i t t e l f u s e . c o m
Example: For an 8/20µs Current Waveform:
20µs = T
10
8µs = T
O
T
T
0
T = Time From 10% to 90% of Peak
1
1
2
= Virtual Origin of Wave
= Virtual Front time = 1.25 • t
= Virtual Time to Half Value (Impulse Duration)
PEAK AMPERES (A)
1
2
10
= Virtual Front Time
= Virtual Time to Half Value
1
10
V751DA/DB40
V661DA/DB40
V571DA/DB40
2
100
FIGURE 1. CURRENT, ENERGY AND POWER DERATING
90
80
70
60
50
40
30
20
10
0
-55
V251DA/DB40
T
V271DA/DB40
10
A
V321DA/DB40
3
= -55
50
o
CURVE
C to 85
10
60
4
70
AMBIENT TEMPERATURE (
o
C
10
5
80
90
100
110
o
120
C)
130
140
150