Varistor Products
Surface Mount Multilayer Varistors (MLVs) > MLN Series
RoHS
MLN SurgeArray™ Suppressor
Description
The MLN SurgeArray™ Suppressor is designed to
help protect components from transient voltages that
exist at the circuit board level. This device provides four
independent suppressors in a single leadless chip in order
to reduce part count and placement time as well as save
space on printed circuit boards.
SurgeArray™ devices are intended to suppress ESD, EFT
and other transients in order to protect integrated circuits
or other sensitive components operating at any voltage
up to 18V
DC
. SurgeArray™ devices are rated to the IEC
61000-4-2 human body model ESD to help products attain
EMC compliance. The array offers excellent isolation and
low crosstalk between sections.
EIA
1206
Size Table
Metric
3216
The inherent capacitance of the SurgeArray™ Suppressor
permits it to function as a filter/suppressor, thereby
replacing separate Zener/capacitor combinations.
The MLN array is manufactured using the Littelfuse
Multilayer technology process and is similar to the
Littelfuse ML and MLE Series of discrete leadless chips.
Applications
•
•
•
•
Data, Diagnostic
I/O Ports
Analog Signal/
Sensor Lines
Portable/Hand-
Held Products
Mobile
•
•
Communications/
Cellular Phones
Computer/DSP
Products
Industrial Instruments
Including Medical
Features
•
•
•
•
RoHS Compliant
Four individual
devices in one chip
ESD rated to IEC
61000-4-2 (Level 4)
AC characterized
for impedance and
capacitance
Low adjacent channel
crosstalk, -55dB
at 10MHz (Typ)
•
•
•
•
Low leakage
Operating voltage
up to 18V
M(DC)
-55ºC to 125ºC
operating temp range
Low-profile, PCMCIA
compatible
•
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)
)
Operating Ambient Temperature Range (T
A
)
Storage Temperature Range (T
STG
)
MLN Series
Units
5.5 - 18
-55 to +125
-55 to +150
V
ºC
ºC
©2010 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/MLN.html for current information.
Revision: August 10, 2010
MLN SurgeArray™ Suppressor
MLN Series
Surface Mount Multilayer Varistors (MLVs) > MLN Series
Varistor Products
Device Ratings and Specifications
Any Single Section
Maximum Ratings (125ºC)
Maximum
Maximum
Maximum
Maximum
Non-
Non-
Clamping
Continuous
repetitive
repetitive
Voltage (at
Working
Surge Current Surge Energy Noted 8/20μs)
Voltage
(8/20μs)
(10/1000μs)
Current
V
M(DC)
(V)
V5.5MLN41206
V9MLN41206
V14MLN41206
V18MLN41206
V18MLN41206L
5.5
9.0
14.0
18.0
18.0
I
TM
(A)
30
30
30
30
30
W
TM
(J)
0.10
0.10
0.10
0.10
0.05
V
C
(V)
15.5 at 2A
23.0 at 2A
30.0 at 2A
40.0 at 2A
50.0 at 1A
Specifications (25ºC)
Typical ESD
Supression Voltage
(Note1)
Nominal Voltage
at 1mA DC Test
Current
V
N(DC)
Max
(V)
10.8
16.0
20.3
28.0
35.0
Capacitance
at 1 MHz
(1V p-p)
(Note 4)
C
TYP
MAX
(pF)
430
250
140
100
45
(pF)
520
300
175
125
75
Part Number
(Note 2)
(Note 3)
8kV Contact 15kV Air V
N(DC)
Min
Peak Clamp Peak
(V)
60
95
110
165
200
(V)
35
50
55
63
95
(V)
45
75
85
100
130
(V)
7
.10
11.0
15.9
22.0
25.0
NOTES:
1. Tested to IEC61000-4-2 Human Body Model (HBM) discharge test circuit.
2. Direct discharge to device terminals (IEC preffered test method).
3. Corona discharge through air (represents actual ESD event)
4. Capacitance may be customized, contact Sales.
Peak Current and Energy Derating Curve
For applications exceeding 125ºC ambient temperature, the
peak surge current and energy ratings must be reduced.
Peak Pulse Current Test Waveform for Clamping Voltage
PERCENT OF PEAK VALUE
100
90
100
PERCENT OF RATED VALUE
90
80
70
60
50
40
30
20
10
0
-55
50
60
70
80
90
100
110
120
130 140 150
50
10
O
1
t
t
1
t
2
TIME
Figure 2
0
1
= Virtual Origin of Wave
T = Time from 10% to 90% of Peak
T
1
= Rise Time = 1.25 x T
T
2
= Decay Time
(Impulse Duration)
Example:
For an 8/20
μs
Current Waveform:
8μs = T
1
= Rise Time
20μs = T
2
= Virtual Time
to Half Value
Figure 1
AMBIENT TEMPERATURE (
o
C)
Typical Performance Curves
Equivalent Series Resistance
Impedance vs Frequency, 1206 Size
10000
1000
1000
100
10
Impeance |Z| (Ω)
100
OHMS
V5.5
V9
10
V14
V18
V18L
1
0.1
1MHz
10MHz
100MHz
1GHz
10GHz
1
Frequency
Figure 3
0.1
0.1
1
10
100
1000
Figure 4
MLN SurgeArray™ Suppressor
Revision: August 10, 2010
Frequency (MHz)
©2010 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/MLN.html for current information.
Varistor Products
Surface Mount Multilayer Varistors (MLVs) > MLN Series
Typical Performance Curves (continued)
Nominal Voltage Stability to IEC 1000-4-2 (8kV Contact
Method, One Section)
25
V18
NUMBER OF SURGES
1206 Size Pulse Rating for Long Duration Surges
(Any Single Section)
100
20
1
NOMINAL VOLTAGE
V
NOM
(V)
V14
100
2
15
Surge Current (A)
10
10
10
3
V9
10
V5.5
1
∞
10
4
10
5
10
6
5
0
0
10
100
NUMBER OF DISCHARGES
1000
10000
0.1
10
100
Figure 5
1000
10000
Figure 6
Square Wave Impulse Duration (μs)
V-I Characteristic, 1206 size
Capacitance vs Frequency, 1206 Size
500
100
V18L
MAXIMUM CLAMP VOLTAGE
MAXIMUM STANDBY
V18
V14
V9
V5.5
400
Varistor Voltage (V)
V18L
V18
V14
Capacitance (pF)
V5.5
300
V9
10
V9
200
V14
V18
V5.5
100
V18L
1
10μA
100μA
1mA
10mA
100mA
1A
10A
100A
Figure 7
Current (A)
0
0.1
1
10
100
1000
Figure 8
Frequency (MHz)
Adjacent Channel Crosstalk
0
-20
Crosstalk (dB)
-40
-60
V14
V18
V18L
-80
V5.5
V9
-100
V
IN
= 1V
RMS
Z = 50Ω
-120
0.001
0.01
0.1
1
10
100
1000
Figure 9
Frequency (MHz)
©2010 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/MLN.html for current information.
Revision: August 10, 2010
MLN SurgeArray™ Suppressor
MLN Series
Surface Mount Multilayer Varistors (MLVs) > MLN Series
Varistor Products
Lead (Pb) Soldering Recommendations
The principal techniques used for the soldering of
components in surface mount technology are IR Re-flow
and Wave soldering. Typical profiles are shown on the right.
The recommended solder for the MLN suppressor is
a 62/36/2 (Sn/Pb/Ag), 60/40 (Sn/Pb) or 63/37 (Sn/Pb).
Littelfuse also recommends an RMA solder flux.
Wave soldering is the most strenuous of the processes.
To avoid the possibility of generating stresses due to
thermal shock, a preheat stage in the soldering process
is recommended, and the peak temperature of the solder
process should be rigidly controlled.
When using a reflow process, care should be taken to
ensure that the MLN chip is not subjected to a thermal
gradient steeper than 4 degrees per second; the ideal
gradient being 2 degrees per second. During the soldering
process, preheating to within 100 degrees of the solder's
peak temperature is essential to minimize thermal shock.
Once the soldering process has been completed, it is
still necessary to ensure that any further thermal shocks
are avoided. One possible cause of thermal shock is hot
printed circuit boards being removed from the solder
process and subjected to cleaning solvents at room
temperature. The boards must be allowed to cool gradually
to less than 50ºC before cleaning.
Reflow Solder Profile
250
MAXIMUM TEMPERATURE
230°C
200
TEMPERATURE °C
150
40-80
SECONDS
ABOVE 183°C
RAMP RATE
<2°C/s
100
PREHEAT DWELL
50
PREHEAT ZONE
0
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
Figure 10
TIME (MINUTES)
Wave Solder Profile
300
250
TEMPERATURE °C
MAXIMUM WAVE 260°C
200
150
SECOND PREHEAT
100
FIRST PREHEAT
50
0
0.0
Figure 11
0.5
1.0
1.5
2.0
2.5
3.0
TIME (MINUTES)
3.5
4.0
4.5
MLN SurgeArray™ Suppressor
Revision: August 10, 2010
©2010 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/MLN.html for current information.
Varistor Products
Surface Mount Multilayer Varistors (MLVs) > MLN Series
Product Dimensions (mm)
PAD LAYOUT DEMENSIONS
E
D
CHIP LAYOUT DIMENSIONS
T
W
A
B
C
P
L
S
X
BW
BL
Dimension
A
B
C
D
E
L
W
T
BW
BL
P
X
S
1206 Size
IN
0.890
1.650
2.540
0.460
0.790
0.126 -/+0.008
0.063 -/+0.008
0.053 Max
0.016 -/+0.004
0.007 +0.01/- 0.002
0.030 Ref
0.045 -/+0.004
0.015 -/+0.004
MM
0.035
0.065
0.100
0.018
0.030
3.200 -/+0.200
1.600 -/+0.200
1.350 Max
0.410 -/+0.100
0.180 +0.25/-0.050
0.760 Ref
1.140 -/+0.100
0.380 -/+0.100
Part Numbering System
V 18 ML N 4 1206 L W T
DEVICE FAMILY
TVSS Device
MAXIMUM DC
WORKING VOLTAGE
MULTILAYER DESIGNATOR
SERIES DESIGNATOR
N: Array
NUMBER OF SECTIONS
PACKING OPTIONS*
A: Bulk Pack, 2500 pieces
H: 7in (178mm) Diameter Reel, 2500 pieces
T: 13in (330mm) Diameter Reel, 10,000 pieces
END TERMINATION
W: Ag/P
d
/P
t
(Silver/Platinum/Palladium)
CAPACITANCE OPTION
(no letter): Standard
L: Low Capacitance Version
DEVICE SIZE:
1206: 120mil x 60mil
Packaging*
Quantity
Device Size
1206
13” Inch Reel
("T" Option)
10,000
7” Inch Reel
("H" Option)
2,500
Bulk Pack
("A" Option)
2,500
*(Packaging) It is recommended that parts be kept in the sealed bag provided and that parts be used as soon as possible when removed from bags.
©2010 Littelfuse, Inc.
Specifications are subject to change without notice.
Please refer to www.littelfuse.com/series/MLN.html for current information.
Revision: August 10, 2010
MLN SurgeArray™ Suppressor
MLN Series
