Metal-Oxide Varistors
(MOVs)
Surface Mount Multilayer Varistors (MLVs) > MLA Series
MLA Varistor Series
Description
RoHS
The MLA Series family of transient voltage surge
suppression devices is based on the Littelfuse Multilayer
fabrication technology. These components are designed
to suppress a variety of transient events, including those
specified in IEC 61000-4-2 or other standards used for
Electromagnetic Compliance (EMC). The MLA Series is
typically applied to protect integrated circuits and other
components at the circuit board level.
The wide operating voltage and energy range make the
MLA Series suitable for numerous applications on power
supply, control and signal lines.
Size Table
Metric
1005
1608
2012
3216
3225
EIA
0402
0603
0805
1206
1210
The MLA Series is manufactured from semiconducting
ceramics, and is supplied in a leadless, surface mount
package. The MLA Series is compatible with modern
reflow and wave soldering procedures.
It can operate over a wider temperature range than Zener
diodes, and has a much smaller footprint than plastic-
housed components.
Littelfuse Inc. manufactures other multilayer series
products. See the MLE Series data sheet for ESD
applications, MHS Series data sheet for high-speed ESD
applications, the MLN Series for multiline protection and
the AUML Series for automotive applications.
Features
•
Absolute Maximum Ratings
• For ratings of individual members of a series, see device ratings and specifications table.
Continuous
Steady State Applied Voltage:
DC Voltage Range (V
M(DC)
)
AC Voltage Range (V
M(AC)RMS
)
Transient:
Non-Repetitive Surge Current, 8/20µs
Waveform, (I
TM
)
Non-Repetitive Surge Energy,
10/1000µs Waveform, (W
TM
)
Operating Ambient Temperature Range (T
A
)
Storage Temperature Range (T
STG
)
Temperature Coefficient (αV) of Clamping
Voltage (V
C
) at Specified Test Current
ML Series
3.5 to 120
2.5 to 107
Units
V
V
•
4 to 500
0.02 to
2.5
-55 to
+125
-55 to
+150
<0.01
A
J
ºC
ºC
%/º C
•
•
•
RoHS compliant
Leadless 0402,
0603, 0805, 1206
and 1210 chip sizes
Multilayer ceramic
construction
technology
-55°C to +125°C
operating temp. range
Operating voltage
range V
M(DC)
=
5.5V to 120V
Halogen-Free and
•
•
•
•
•
Rated for surge
current (8 x 20µs)
Rated for energy
(10 x 1000µs)
Inherent bi-directional
clamping
Standard low
capacitance
types available
ESD rated to IEC
61000-4-2, Level 4: Air
Discharge 15KV and
Contact Discharge 8KV
Applications
•
Additional Information
Datasheet
Resources
Samples
•
Suppression of
inductive switching
or other transient
events such as EFT
and surge voltage at
the circuit board level
ESD protection for IEC
61000-4-2 (Level 4),
MIL-STD-883 method
3015.7 and other
,
industry specifications
(see also the MLE
or MLN Series)
•
•
•
Provides on-board
transient voltage
protection for ICS
and transistors
Used to help achieve
electromagnetic
compliance of
end products
Replace larger surface
mount TVS Zeners in
many applications
© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 09/14/17
Surface Mount Multilayer Varistors (MLVs) > MLA Series
Metal-Oxide Varistors
(MOVs)
Device Ratings and Specifications
Maximum
Continuous
Working Voltage
V
M(DC)
(V)
3.5
3.5
3.5
3.5
5.5
5.5
5.5
5.5
5.5
5.5
5.5
5.5
5.5
5.5
9.0
9.0
9.0
9.0
9.0
9.0
9.0
9.0
12.0
14.0
14.0
14.0
14.0
14.0
14.0
14.0
18.0
18.0
18.0
18.0
18.0
18.0
18.0
18.0
18.0
26.0
26.0
26.0
26.0
26.0
26.0
30.0
30.0
30.0
30.0
30.0
30.0
V
M(AC)
(V)
2.5
2.5
2.5
2.5
4.0
4.0
4.0
4.0
4.0
4.0
4.0
4.0
4.0
4.0
6.5
6.5
6.5
6.5
6.5
6.5
6.5
6.5
9.0
10.0
10.0
10.0
10.0
10.0
10.0
10.0
14.0
14.0
14.0
14.0
14.0
14.0
14.0
14.0
14.0
20.0
20.0
20.0
20.0
20.0
20.0
25.0
25.0
25.0
25.0
25.0
25.0
Maximum Ratings (125º
C)
Maximum Non-
Maximum Non-
Maximum Clamping
repetitive Surge
repetitive Surge
Voltage at 1A (or as
Current (8/20µs) Energy (10/1000µs)
Noted) (8/20µs)
I
TM
(A)
30
120
40
100
20
20
20
20
30
30
30
120
40
150
20
20
4
4
30
30
30
40
40
20
20
30
30
120
40
150
20
20
30
30
120
40
150
500
1000
30
30
100
40
150
300
30
30
30
180
280
220
W
TM
(J)
0.100
0.300
0.100
0.300
0.050
0.050
0.050
0.05
0.100
0.100
0.100
0.300
0.100
0.400
0.050
0.050
0.020
0.020
0.100
0.100
0.100
0.100
0.100
0.050
0.050
0.100
0.100
0.300
0.100
0.400
0.050
0.050
0.100
0.100
0.300
0.100
0.400
2.500
2.900
0.100
0.100
0.300
0.100
0.600
1.200
0.100
0.100
0.100
1.000
1.200
0.900
V
C
(V)
13.0
13.0
13.0
13.0
21.0
21.0
39.0
39
17
.5
17
.5
17
.5
17
.5
17
.5
17
.5
30.0
30.0
35.0
35.0
25.5
25.5
25.5
25.5
29.0
39.0
39.0
34.5
34.5
32.0
32.0
32.0
50.0
50.0
50.0
50.0
44.0
44.0
44.0
44.0 at 2.5
44.0 at 5
60.0
60.0
60.0
60.0
60.0
60.0 at 2.5
74.0
74.0
72.0
67
.0
68.0 at 2.5
68.0 at 2.5
Specifications (25ºC)
Nominal Voltage
Typical
at 1mA DC Test
Capacitance
Current
at f = 1MHz
V
N(DC)
Min
V
N(DC)
Max
(V)
(V)
3.7
7
.0
3.7
7
.0
3.7
7
.0
3.7
7
.0
7
.1
10.8
7
.1
10.8
15.9
21.5
15.9
21.5
7
.1
9.3
7
.1
9.3
7
.1
9.3
7
.1
9.3
7
.1
9.3
7
.1
9.3
11.0
16.0
11.0
16.0
11.0
16.0
11.0
16.0
11.0
16.0
11.0
16.0
11.0
16.0
11.0
16.0
14.0
18.5
15.9
21.5
15.9
21.5
15.9
21.5
15.9
21.5
15.9
20.3
15.9
20.3
15.9
20.3
22.0
28.0
22.0
28.0
22.0
28.0
22.0
28.0
22.0
28.0
22.0
28.0
22.0
28.0
22.0
28.0
22.0
28.0
31.0
38.0
31.0
38.0
29.5
38.5
29.5
38.5
29.5
38.5
29.5
38.5
37
.0
46.0
37
.0
46.0
37
.0
46.0
35.0
43.0
35.0
43.0
35.0
43.0
C
(pF)
1270
1760
1380
5800
220
220
70
70
960
450
450
1200
660
2800
120
120
33
33
490
360
360
320
220
70
70
80
180
360
200
800
40
40
60
120
260
170
1030
2500
4050
55
110
110
90
630
1250
45
90
85
400
685
500
Part Number
V3.5MLA0603N
5
V3.5MLA0805N
V3.5MLA0805LN
V3.5MLA1206N
V5.5MLA0402N
V5.5MLA0402F
8
V5.5MLA0402LN
V5.5MLA0402LF
8
V5.5MLA0603N
5
V5.5MLA0603LN
4
V5.5MLA0603LF
8
V5.5MLA0805N
V5.5MLA0805LN
V5.5MLA1206N
V9MLA0402N
V9MLA0402F
8
V9MLA0402LN
V9MLA0402LF
8
V9MLA0603N
5
V9MLA0603LN
4
V9MLA0603LF
8
V9MLA0805LN
V12MLA0805LN
V14MLA0402N
V14MLA0402F
8
V14MLA0603N
V14MLA0603F
8
V14MLA0805N
V14MLA0805LN
V14MLA1206N
V18MLA0402N
V18MLA0402F
8
V18MLA0603N
V18MLA0603F
8
V18MLA0805N
V18MLA0805LN
V18MLA1206N
V18MLA1210N
V18MLA1812N
7
V26MLA0603N
V26MLA0603F
8
V26MLA0805N
V26MLA0805LN
V26MLA1206N
V26MLA1210N
V30MLA0603N
V30MLA0603F
8
V30MLA0805LN
V30MLA1206N
V30MLA1210N
V30MLA1210LN
© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 09/14/17
Metal-Oxide Varistors
(MOVs)
Surface Mount Multilayer Varistors (MLVs) > MLA Series
Device Ratings and Specifications (Continue...)
Maximum
Continuous
Working Voltage
V
M(DC)
(V)
30.0
33.0
38.0
42.0
45.0
48.0
48.0
48.0
56.0
60.0
68.0
85.0
120.0
V
M(AC)
(V)
25.0
26.0
30.0
30.0
35.0
40.0
40.0
40.0
40.0
50.0
50.0
67
.0
107
.0
Maximum Ratings (125º
C)
Maximum Non-
Maximum Non-
Maximum Clamping
repetitive Surge
repetitive Surge
Voltage at 1A (or as
Current (8/20µs) Energy (10/1000µs)
Noted) (8/20µs)
I
TM
(A)
800
180
800
180
500
180
250
220
180
250
180
250
125
W
TM
(J)
3.700
0.800
4.500
0.800
4.000
0.900
1.200
0.900
1.000
1.500
1.000
2.500
2.000
V
C
(V)
65.0 at 5
75.0
77 at 5
.0
92.0
90.0 at 5
100.0
105.0 at 2.5
105.0 at 2.5
120.0
130.0 at 2.5
140.0
180.0 at 2.5
260.0 at 2.5
Specifications (25ºC)
Nominal Voltage
Typical
at 1mA DC Test
Capacitance
Current
at f = 1MHz
V
N(DC)
Min
V
N(DC)
Max
(V)
(V)
35.0
43.0
38.0
49.0
43.0
52.0
46.0
60.0
50.4
61.6
54.5
66.5
54.5
66.5
54.5
66.5
61.0
77
.0
67
.0
83.0
76.0
90.0
95.0
115.0
135.0
165.0
C
(pF)
1900
390
1450
345
1200
185
400
380
180
230
130
160
70
Part Number
V30MLA1812N
7
V33MLA1206N
V38MLA1812N
7
V42MLA1206N
V45MLA1812N
7
V48MLA1206N
V48MLA1210N
V48MLA1210LN
V56MLA1206N
V60MLA1210N
V68MLA1206N
V85MLA1210N
V120MLA1210N
NOTES:
1
'L' suffix is a low capacitance and energy version; Contact your Littelfuse sales representative for custom capacitance requirements.
2 Typical leakage at 25ºC<25µA, maximum leakage 100µA at V
M(DC)
; for 0402 size, typical leakage <5µA, maximum leakage <20µA at V
M(DC)
.
3 Average power dissipation of transients for 0402, 0603, 0805, 1206 and 1210 sizes not to exceed 0.03W, 0.05W, 0.1W, 0.1W and 0.15W respectively.
4 Item is available as 'R' packing option only. All 0402 size items available as 'R' packaging option only. See Packaging section for additional information.
5 Item is available in 'H','T'and 'A' packing option only. All 0805, 1206 and 1210 parts come as 'H','T'and 'A' packing option only. See Packaging section for additional information.
6. The typical capacitance rating is the discrete component test result.
7 Item is available in "T" packing option only.
.
8. Item is available in "R" packing option only, and lead free.
© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 09/14/17
Surface Mount Multilayer Varistors (MLVs) > MLA Series
Metal-Oxide Varistors
(MOVs)
Peak Current and Energy Derating Curve
When transients occur in rapid succession, the average
power dissipation is 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. For applications exceeding 125°C ambient
temperature, the peak surge current and energy ratings
must be derated as shown below.
PERCENT OF RATED VALUE
Peak Pulse Current Test Waveform for Clamping Voltage
100
PERCENT OF PEAK VALUE
50
0
O
1
T
T
1
T
2
TIME
100
80
60
40
20
0
-55
50
60
70
80
90
100
110
120
130 140 150
Figure 2
Figure 1
AMBIENT TEMPERATURE (
o
C)
0
1
= Virtual Origin of Wave
T = Time from 10% to 90% of Peak
FIGURE 2.
Time = 1.25 x T
T
1
= Rise
PEAK PULSE CURRENT TEST WAVEFORM
FOR CLAMPING VOLTAGE
T
2
= Decay Time
Example
- For an 8/20
µs
Current Waveform:
O
1
= VIRTUAL ORIGIN OF WAVE
8µs = T
1
= Rise Time
t = TIME FROM 10% TO 90% OF PEAK
t
1
= VIRTUAL FRONT
Decay
1.25 x t
20µs = T
2
=
TIME =
Time
t
2
= VIRTUAL TIME TO HALF VALUE
(IMPULSE DURATION)
EXAMPLE:
FOR AN 8/20 s CURRENT WAVEFORM
Limit V-I
s = t
1
= VIRTUAL FRONT TIME
8
Characteristic for V9MLA0402L
20 s = t
2
= VIRTUAL TIME TO
HALF VALUE
100
MLA0402L Limit VI Curves
Limit V-I Characteristic for V5.5MLA0402 to V18MLA0402
MLA0402 Limit VI Curves
FIGURE 1. PEAK CURRENT AND ENERGY
DERATING CURVE
100
Varistor Voltage (V)
Varistor Voltage (V)
10
V18MLA0402
V14MLA0402
V9MLA0402
V5.5MLA0402
10
V9MLA0402L
V5.5MLA0402L
1
1µA
10µA
100µA
1mA
Current (A)
10mA
1A
10A
100A
1
1µA
10µA
100µA
1mA
10mA
1A
10A
100A
Figure 3
Figure 4
Current (A)
© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 09/14/17
Metal-Oxide Varistors
(MOVs)
Surface Mount Multilayer Varistors (MLVs) > MLA Series
Limit V-I Characteristic for V3.5MLA0603 to V30MLA0603
1000
Limit V-I Characteristic for V3.5MLA0805L to V30MLA0805L
1000
V30MLA0805L
V30MLA0603
V26MLA0603
V18MLA0603
V26MLA0805L
V18MLA0805L
Varistor Voltage (V)
100
Varistor Voltage (V)
V14MLA0603
100
V14MLA0805L
10
10
V9MLA0603, V9MLA0603L
V5.5MLA0603, V5.5MLA0603L
V3.5MLA0603
V12MLA0805L
V9MLA0805L
V5.5MLA0805L
V3.5MLA0805L
1
10
µA
100
µA
1mA
Figure 5
10mA
Current (A)
100mA
1A
10A
100A
1
10µA
100µA
1mA
10mA
Current (A)
100mA
1A
10A
100A
Figure 6
FIGURE 5. LIMIT V-I CHARACTERISTIC FOR V3.5MLA0603 TO V30MLA0603
FIGURE 6. LIMIT V-I CHARACTERISTIC FOR V3.5MLA0805L TO V30MLA0805L
Limit V-I Characteristic for V3.5MLA0805 to V26MLA0805
1000
Limit V-I Characteristic for V3.5MLA1206 to V68MLA1206
1000
Varistor Voltage (V)
100
Varistor Voltage (V)
100
10
V26MLA0805
V18MLA0805
V14MLA0805
V5.5MLA0805
V3.5MLA0805
10
V68MLA1206
V56MLA1206
V42MLA1206
V33MLA1206
V26MLA1206
V18MLA1206
V14MLA1206
V5.5MLA1206
V3.5MLA1206
1
10µA
100µA
1mA
10mA
100mA
Current (A)
1A
10A
100A
1000A
1
10
µA
100
µA
1mA
10mA
100mA
Current (A)
1A
10A
100A
1000A
Figure 7
FIGURE 7. LIMIT V-I CHARACTERISTIC FOR V3.5MLA0805 TO V26MLA0805
Figure 8
FIGURE 6. LIMIT V-1 CHARACTERISTIC FOR V3.5MLA1206 TO V68MLA1206
Limit V-I Characteristic for V18MLA1210 to V120MLA1210
1000
MAXIMUM CLAMPING VOLTAGE
MAXIMUM LEAKAGE
100
Varistor Voltage (V)
V120MLA1210
10
V85MLA1210
V60MLA1210
V48MLA1210, V48MLA1210L
V30MLA1210, V30MLA1210L
V26MLA1210
1
10µA
V18MLA1210
100µA
1mA
10mA
100mA
1A
10A
100A
1000A
Figure 9
CURRENT (A)
FIGURE 9. LIMIT V-I CHARACTERISTIC FOR V18MLA1210 TO V120MLA1210
© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 09/14/17
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