SURFACE MOUNT EMI FILTERS
CHIP FILTERS
VCM1
1R/21R Series
The VCM11R/21R Series is an 0603 and 0805 two terminal
varistor. Regulations for ESD immunity are increasing the
need for surge absorbing components, particularly in small
and easy to install packages. The VCM11R/21R has a peak
pulse current of up to 150A (8/20 S) in spite of its small size.
FEATURES
I
I
I
I
I
Small size (EIA STD)
Able to withstand high surge current
Low clamping voltage
Nickel electrode provides excellent solder heat resist
Flow and reflow soldering
APPLICATIONS
PART NUMBERING SYSTEM
VCM
SERIES
11
R180
A300
PT
I
Communication ports (RS-232C)
I
Motor/relay
I
Static protection on computer 1/0 ports
EQUIVALENT CIRCUIT DIAGRAM
SIZE
11: 1.6 x 0.8mm
21: 2.0 x 1.25mm
RATED
VOLTAGE
R180: 18VDC
PEAK PULSE
CURRENT
A300: 30A
PACKAGING CODE
PT: Tape & Reel
B1: Bulk
*The VCM Series is non-polarized
SPECIFICATIONS
Dimensions
Part
Number
Rated
Voltage
(VDC)
Varistor
Voltage
(V1mA)
Clamping
Voltage
(V max.)
Peak
Pulse
Current
(8/20 S)
30A
Energy
Rating
Capacitance
1 MHz
Operating
Temperature
Range
0603
0.4 ± 0.2
0.4 ± 0.2
VCM11R180A300
18
29 ± 5
50 (V1A)
0.05J
100pF ± 30%
0.8 ± 0.2
0.8 ± 0.2
VCM11R5R6A400
5.6
9 ± 2V
15.5 (V1A)
40A
0.05J
700pF ± 30%
1.6 ± 0.2
0.8 ± 0.2
VCM11R090A400
9.0
9 ± 2V
20 (V1A)
40
0.05J
600pF ± 30%
–40°C~
~
+125°C
0805
0.4 ± 0.2
0.4 ± 0.2
SURFACE MOUNT
EMI FILTERS
1.25 ± 0.3
VCM21R180A151
18
25 ± 5
45 (V10A)
150A
0.3J
1000pF ± 30%
2.0 ± 0.3
1.25 ± 0.3
Available as standard through authorized Murata Electronics Distributors.
TYPICAL V/I CHARACTERISTICS
VCM11
100
VCM11R180A300
Voltage (V)
Voltage (V)
VCM11R090A400
10
VCM11R5R6A400
VCM21R
10
100
VCM21
1
0
–7
10
–6
10
–5
10
–4
10
–3
10
–2
10
–1
10
0
10
1
10
2
10
3
Current (A)
1
10
–7
10
–6
10
–5
10
–4
10
–3
10
–2
10
–1
10
0
10
1
10
2
10
3
Current (A)
CG01-J
193
嵌入式系统
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