V385SM7 Littelfuse Inc, V385SM7 Datasheet - Page 2

• Manufacturer Part Number: V385SM7
• Description: VARISTOR 385VRMS 1.2KA 7MM SMD
• Manufacturer: Littelfuse Inc
• Series: SM7r

Specifications of V385SM7

• Varistor Voltage: 682V
• Current-surge: 1.2kA
• Number Of Circuits: 1
• Maximum Ac Volts: 385VAC
• Maximum Dc Volts: 505VDC
• Energy: 27J
• Package / Case: Non-Standard SMD
• Voltage Rating Dc: 505 V
• Voltage Rating Ac: 385 V
• Clamping Voltage: 1025 V
• Peak Surge Current: 1200 A
• Capacitance: 60 pF
• Operating Temperature Range: - 40 C to + 85 C
• Mounting: SMD/SMT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: F3553TR

SM7 Series Varistor
SM7 Series Ratings & Specifications
Peak Current, Energy and Power Derating Curve
surge current and energy ratings must be reduced as shown below
V-I Limit Curves
Number
Part
2000
1500
1000
If pulse ratings
500
100
90
80
70
60
50
40
30
20
10
0
0.001
-55
0
50
0.01
V
V
60
(V)
M(AC)
Continuous
70
AMBIENT TEMPERATURE (
0.1
80
Maximum Rating (85°C)
V
V
(V)
Current(A)
90
1
V
100
10 x 1000μs
Energy
Surface Mount Varistors > SM7 Series
110
10
W
(J)
TM
o
120
C)
Transient
100
130
Peak Current
140 150
8 x 20μs
1000
V
(A)
I
TM
V510SM7
V480SM7
V460SM7
V420SM7
V385SM7
V320SM7
V300SM7
Revision: January 10, 2011
Varistor Products
V
NOM
Varistor Voltage
(V)
Test Current
at 1mA DC
Min V
Peak Pulse Current Test Waveform for Clamping Voltage
Pulse Rating Curves
10000
O
1000
1
100
T
T
Example
10
100
1
NOM
10
= Virtual Origin of Wave
0
0
(V)
8μs = T
10
10
10
Specifications (25°C)
1
2
Max
2
3
μs = T
t
1
t
Please refer to www.littelfuse.com/series/sm7.html for current information.
(V)
V
Maximum
Clamping
8 x 20 μs
C
Voltage
100
t
Impulse Duration (μs)
(A)
I
μ
PK
10
4
Specifications are subject to change without notice.
Capacitance
10
f = 1MHz
5
Typical
10
(pF)
6
C
1000
©2010 Littelfuse, Inc.
TIM E
10000