V275SM20 Littelfuse Inc, V275SM20 Datasheet - Page 2

• Manufacturer Part Number: V275SM20
• Description: VARISTOR 275VRMS 6.5KA 20MM SMD
• Manufacturer: Littelfuse Inc
• Series: SM20r

Specifications of V275SM20

• Varistor Voltage: 473V
• Current-surge: 6.5kA
• Number Of Circuits: 1
• Maximum Ac Volts: 275VAC
• Maximum Dc Volts: 369VDC
• Energy: 140J
• Package / Case: SMD 20mm Dia
• Voltage Rating Dc: 369 V
• Voltage Rating Ac: 275 V
• Clamping Voltage: 710 V
• Peak Surge Current: 6500 A
• Surge Energy Rating: 140 J
• Capacitance: 900 pF
• Operating Temperature Range: - 40 C to + 85 C
• Mounting: SMD/SMT
• Dimensions: 26 mm Dia. x 10.5 mm H
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: F3547

1. Energy rating for impulse duration of 30ms minimum to one half of peak current (automotive load dump).
SM20 Series Varistor
SM20 Series Ratings & Specifications
Peak Current, Energy and Power Derating Curve
For applications exceeding 85ºC ambient temperature, the peak
surge current and energy ratings must be reduced as shown below
Peak Pulse Current Test Waveform for Clamping Voltage
V175SM20
V230SM20
V250SM20
V275SM20
V300SM20
V320SM20
V26SM20
Number
O
1
Part
0
T = Time from 10% to 90% of Peak
T
T
Example - For an 8/20 μs Current Waveform:
100
1
100
1
2
90
80
70
60
50
40
30
20
10
50
= Virtual Origin of Wave
-55
= Rise Time = 1.25 x T
= Decay Time
0
0
8μs = T
20μs = T
50
t
1
t
Branding
230SM20
250SM20
275SM20
300SM20
320SM20
175SM20
26SM20
1
60
2
= Rise Time
= Decay Time
70
AMBIENT TEMPERATURE (
t
80
V
V
230
250
275
300
320
90
175
(V)
20
M(AC)
Continuous
RMS
100
Surface Mount Varistors > SM20 Series
110
Maximum Rating (8 °C)
V
300
225
330
369
405
420
V
(V)
26
M(DC)
DC
o
120
C)
130
10 x 1000μs
160 (note 1)
Energy
140 150
1x pulse
TIM E
W
122
130
140
165
150
(J)
20
90
TM
Transient
Varistor Products
Revision: May 11, 2010
Peak Current
8 x 20μs
1x pulse
2000
6500
6500
6500
6500
6500
6500
(A)
I
TM
V175SM20 - V320SM20
Repetitive Surge Capability
10,000
5,000
2,000
1,000
500
200
100
50
20
10
5
2
1
V
20
(10mA)
NOM
Varistor Voltage
247
324
354
389
420
462
(V)
INDEFINITE
32
1
Test Current
at 1mA DC
Min V
Please refer to www.littelfuse.com/series/sm20.html for current information.
(10mA)
NOM
100
2
303
396
429
473
540
517
(V)
40
10
Specifications (2 °C)
IMPULSE DURATION (μs)
Max
Specifications are subject to change without notice.
455
595
650
710
775
810
(V)
V
63
Maximum
Clamping
8 x 20 μs
C
MODEL SIZE 20mm
V175SM20 - V320SM20
Voltage
10
10
2
10
3
1,000
10
4
100
100
100
100
100
100
(A)
I
20
10
PK
5
6
Capacitance
f = 1MHz
Typical
12000
©2010 Littelfuse, Inc.
1400
1000
1100
(pF)
900
800
750
C
10,000