MLF / MLFM Series
Stackpole Electronics, Inc.
Metal Film Melf Resistor
Resistive Product Solutions
Features:
•
•
•
•
•
•
Thin film technology for precision and stability
Excellent power to size ratio
Exhibits good pulse power characteristics
100% RoHS compliant and lead free without exemption
Halogen free
REACH compliant
Electrical Specifications
Type/Code
Package
Size
Power Rating
(W)
@ 70ºC
Maximum
Working
Voltage (V)
(1)
Maximum
Overload
Voltage (V)
MLF18
0102
0.125
150
300
MLFM15
0102
0.2
200
400
MLF14
0204
200
400
200
400
300
600
350
700
0.25
MLFM25
0204
MLF12
0207
0.4
0.5
Jumper: 4 A
MLFM1
0207
1
0.1%
± 15
± 25
± 50
± 100
± 15
± 25
± 50
± 100
±5
± 10
± 15
± 25
± 50
± 100
±5
± 15
± 25
± 50
± 100
±5
± 10
± 15
± 25
± 50
± 100
±5
± 15
± 25
± 50
± 100
Jumper: 2 A
Ohmic Range (Ω) and Tolerance
TCR (ppm/ºC)
0.5%
1%
5%
100 - 56 K
100 - 82 K 49.9 - 200 K 49.9 - 390 K
8.2 - 1 M
40 - 1 M
100 - 56 K
100 - 82 K 49.9 - 200 K 49.9 - 390 K
8.2 - 1 M
40 - 1 M
10 - 332 K
10 - 20 K
10 - 300 K
10 - 1 M
1 - 4.7 M
0.2 - 10 M
10 - 1 M
1-1M
0.1 - 10 M
0 Ω (< 15 MΩ)
10 - 332 K
10 - 100 K
10 - 1 M
1 - 3.4 M
0.2 - 1 M
10 - 1 M
1-1M
0.1 - 1 M
10 - 332 K
10 - 20 K
10 - 300 K
10 - 1 M
1 - 4.7 M
0.2 - 10 M
10 - 1 M
1-1M
0.1 - 10 M
0 Ω (< 15 MΩ)
10 - 332 K
10 - 100 K
10 - 1 M
1 - 3.4 M
0.2 - 10 M
10 - 1 M
1-1M
0.1 - 10 M
Note: (1) Lesser of √P*R or maximum working voltage
Rev Date: 11/20/2020
This specification may be changed at any time without prior notice
Please confirm technical specifications before you order and/or use.
1
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MLF / MLFM Series
Stackpole Electronics, Inc.
Metal Film Melf Resistor
Resistive Product Solutions
Mechanical Specifications
Type/Code
Weight (g)
(1000 pieces)
MLF18
7.7
MLFM15
7.7
MLF14
18.7
MLFM25
18.7
MLF12
80.9
MLFM1
80.9
L
Body Length
0.087 ± 0.004
2.20 ± 0.10
0.087 ± 0.004
2.20 ± 0.10
0.138 ± 0.008
3.50 ± 0.20
0.138 ± 0.008
3.50 ± 0.20
0.232 ± 0.008
5.90 ± 0.20
0.232 ± 0.008
5.90 ± 0.20
L1 (min.)
Inner Body Length
0.043
1.10
0.043
1.10
0.067
1.70
0.059
1.50
0.114
2.90
0.114
2.90
D
Body Diameter
0.043 ± 0.004
1.10 ± 0.10
0.043 ± 0.004
1.10 ± 0.10
0.055 ± 0.006
1.40 ± 0.15
0.055 ± 0.006
1.40 ± 0.15
0.087 ± 0.008
2.20 ± 0.20
0.087 ± 0.008
2.20 ± 0.20
D1
Middle Body Dia.
0.043 +0/-0.006
1.10 +0/-0.15
0.043 +0/-0.006
1.10 +0/-0.15
0.055 +0/-0.008
1.40 +0/-0.20
0.055 +0/-0.008
1.40 +0/-0.20
0.087 +0/-0.008
2.20 +0/-0.20
0.087 +0/-0.008
2.20 +0/-0.20
K
Termination
0.018 ± 0.002
0.45 ± 0.05
0.018 ± 0.002
0.45 ± 0.05
0.031 ± 0.004
0.80 ± 0.10
0.031 ± 0.004
0.80 ± 0.10
0.051 ± 0.004
1.30 ± 0.10
0.051 ± 0.004
1.30 ± 0.10
Unit
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
Performance Characteristics
Test
Temperature Coefficient
of Resistance (T.C.R.)
Test Method
Test Condition
JIS-C-5201-1 4.8
IEC-60115-1 4.8
At 25°C / - 55°C and 25°C / + 125°C, 25°C is the
reference temperature.
5ppm: At 25°C / -10°C and 25ºC / +85°C,
25°C is the reference temperature
JIS-C-5201-1 4.13
Short Time Overload
Insulation Resistance
IEC-60115-1 4.13
JIS-C-5201-1 4.6
IEC-60115-1 4.6
RCWV*2.5 or max. overload voltage whichever is
lower for 5 seconds
Max. overload voltage for 1 minute
Endurance
JIS-C-5201-1 4.25
IEC-60115-1 4.25.1
70 ± 2ºC, RCWV for 1000 hours
with 1.5 hour "ON" and 0.5 hour "OFF"
Damp Heat with Load
JIS-C-5201-1 4.24
IEC-60115-1 4.24
40 ± 2ºC, 90 ~ 95% R.H., RCWV for 1000 hours
with 1.5 hour "ON" and 0.5 hour "OFF"
Dry Heat
JIS-C-5201-1 4.23
IEC-60115-1 4.23.2
At +125°C / +155°C for 1000 hours
JIS-C-5201-1 4.33
Bending once for 5 seconds with 2 mm
IEC-60115-1 4.33
JIS-C-5201-1 4.17
Solderability
245 ± 5ºC for 3 seconds
IEC-60115-1 4.17
Resistance to Soldering JIS-C-5201-1 4.18
260 ± 5ºC for 10 seconds
Heat
IEC-60115-1 4.18
JIS-C-5201-1 4.7
Voltage Proof
1.42 times max. operating voltage for 1 minute
IEC-60115-1 4.7
JIS-C-5201-1 4.18
Leaching
260 ± 5ºC for 30 seconds
IEC-60068-2-58 8.2.1
Rapid Change of
JIS-C-5201-1 4.19
-55°C to +125°C / +155°C, 5 cycles
Temperature
IEC-60115-1 4.19
RCWV (rated continuous working voltage) = √(P*R) or max. operating voltage whichever is lower.
Storage temperature: 25 ± 3ºC, humidity < 80% R.H.
Operating temperature range is -55°C to +155°C except for 5 ppm/ºC.
Operating temperature range for 5 ppm/ºC is -55°C to +125°C.
Bending Strength
Rev Date: 11/20/2020
This specification may be changed at any time without prior notice
Please confirm technical specifications before you order and/or use.
2
Test Specification
5% and below
Jumper
As specified
0204/0207: ± (0.15% + 0.05 Ω)
0102: ± (0.5% + 0.05 Ω)
5ppm: ± (0.05% + 0.01 Ω)
< 15 mΩ
≥10G
0204/0207: ± (0.15% + 0.05 Ω)
0102: ± (0.5% + 0.05 Ω)
5ppm: ± (0.25% + 0.01 Ω)
0204/0207: ± (1% + 0.05 Ω)
0102: ± (0.5% + 0.05 Ω)
5ppm: ± (0.25% + 0.01 Ω)
0204/0207: ± (1% + 0.05 Ω)
0102: ± (1.5% + 0.05 Ω)
5ppm: ± (0.25% + 0.01 Ω)
± (0.5% + 0.05 Ω)
5ppm: ± (0.1% + 0.01 Ω)
< 15 mΩ
< 15 mΩ
< 15 mΩ
< 15 mΩ
95% min. coverage
± (0.5% + 0.05 Ω)
5ppm: ± (0.05% + 0.01 Ω)
< 15 mΩ
No breakdown or flashover
Individual leacing area ≤ 5%
Total Leaching area ≤ 10%
± (0.5% + 0.05 Ω)
< 15 mΩ
5ppm: ± (0.2% + 0.01 Ω)
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MLF / MLFM Series
Stackpole Electronics, Inc.
Metal Film Melf Resistor
Resistive Product Solutions
Power Derating Curve:
Percent Rated Power (%)
100
-55ºC
70ºC
5 ppm
except for 5 ppm
80
60
40
20
125°C
0
-60
0
20
40
60
80
100
120
155ºC
140
160
180
Ambient Temperature (ºC)
Recommended Solder Profile
This information is intended as a reference for solder profiles for Stackpole resistive components. These profiles should
be compatible with most soldering processes. These are only recommendations. Actual numbers will depend on board
density, geometry, packages used, etc., especially those cells labeled with “*”.
100% Matte Tin / RoHS Compliant Terminations
Soldering iron recommended temperatures: 330°C to 350°C with minimum duration.
Maximum number of reflow cycles: 3.
Wave Soldering
Description
Maximum
Recommended
Preheat Time
80 seconds
70 seconds
Temperature Diff.
140°C
120°C
Solder Temp.
260°C
250°C
Dwell Time at Max.
10 seconds
5 seconds
Ramp DN (°C/sec)
N/A
N/A
Temperature Diff. = Defference between final preheat stage and soldering stage.
Minimum
60 seconds
100°C
240°C
*
N/A
Convection IR Reflow
Description
Maximum
Recommended
Minimum
Ramp Up (°C/sec)
Dwell Time > 217°C
Solder Temp.
Dwell Time at Max.
Ramp DN (°C/sec)
3°C/sec
150 seconds
260°C
30 seconds
6°C/sec
2°C/sec
90 seconds
245°C
15 seconds
3°C/sec
*
60 seconds
*
10 seconds
*
Rev Date: 11/20/2020
This specification may be changed at any time without prior notice
Please confirm technical specifications before you order and/or use.
3
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MLF / MLFM Series
Stackpole Electronics, Inc.
Metal Film Melf Resistor
Resistive Product Solutions
Recommended Lead Free Resistor Reflow Profile
Reel Specifications
Type/Code
MLF18
MLFM15
MLF14
MLFM25
MLF12
MLFM1
øA
7.028
178.50
7.028
178.50
7.028
178.50
7.028
178.50
7.028
178.50
7.028
178.50
±
±
±
±
±
±
±
±
±
±
±
±
øB
0.059
1.50
0.059
1.50
0.059
1.50
0.059
1.50
0.059
1.50
0.059
1.50
2.362
60.00
2.362
60.00
2.362
60.00
2.362
60.00
2.362
60.00
2.362
60.00
Rev Date: 11/20/2020
This specification may be changed at any time without prior notice
Please confirm technical specifications before you order and/or use.
±
±
±
±
±
±
±
±
±
±
±
±
øC
0.039
1.00
0.039
1.00
0.039
1.00
0.039
1.00
0.039
1.00
0.039
1.00
0.512
13.00
0.512
13.00
0.512
13.00
0.512
13.00
0.512
13.00
0.512
13.00
4
±
±
±
±
±
±
±
±
±
±
±
±
W
0.008
0.20
0.008
0.20
0.008
0.20
0.008
0.20
0.020
0.50
0.020
0.50
0.354
9.00
0.354
9.00
0.354
9.00
0.354
9.00
0.512
13.00
0.512
13.00
±
±
±
±
±
±
±
±
±
±
±
±
T
0.020
0.50
0.020
0.50
0.020
0.50
0.020
0.50
0.020
0.50
0.020
0.50
0.492
12.50
0.492
12.50
0.492
12.50
0.492
12.50
0.610
15.50
0.610
15.50
±
±
±
±
±
±
±
±
±
±
±
±
Unit
0.020
0.50
0.020
0.50
0.020
0.50
0.020
0.50
0.020
0.50
0.020
0.50
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
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MLF / MLFM Series
Stackpole Electronics, Inc.
Metal Film Melf Resistor
Resistive Product Solutions
Packaging Specifications - Embossed Plastic Tape
Type/Code
MLF18
MLFM15
MLF14
MLFM25
MLF12
MLFM1
A
0.051
1.30
0.051
1.30
0.061
1.55
0.061
1.55
0.094
2.40
0.094
2.40
Type/Code
MLF18
MLFM15
MLF14
MLFM25
MLF12
MLFM1
±
±
±
±
±
±
±
±
±
±
±
±
B
0.004
0.10
0.004
0.10
0.004
0.10
0.004
0.10
0.004
0.10
0.004
0.10
0.094
2.40
0.094
2.40
0.144
3.65
0.144
3.65
0.242
6.15
0.242
6.15
0.004
0.10
0.004
0.10
0.004
0.10
0.004
0.10
0.004
0.10
0.004
0.10
0.079
2.00
0.079
2.00
0.079
2.00
0.079
2.00
0.079
2.00
0.079
2.00
P1
0.157
4.00
0.157
4.00
0.157
4.00
0.157
4.00
0.157
4.00
0.157
4.00
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
W
0.004
0.10
0.004
0.10
0.004
0.10
0.004
0.10
0.004
0.10
0.004
0.10
0.315
8.00
0.315
8.00
0.315
8.00
0.315
8.00
0.472
12.00
0.472
12.00
0.002
0.05
0.002
0.05
0.002
0.05
0.002
0.05
0.002
0.05
0.002
0.05
0.059
1.50
0.059
1.50
0.059
1.50
0.059
1.50
0.059
1.50
0.059
1.50
P2
±
±
±
±
±
±
±
±
±
±
±
±
E
±
±
±
±
±
±
±
±
±
±
±
±
0.004
0.10
0.004
0.10
0.004
0.10
0.004
0.10
0.004
0.10
0.004
0.10
D0
±
±
±
±
±
±
±
±
±
±
±
±
0.069
1.75
0.069
1.75
0.069
1.75
0.069
1.75
0.069
1.75
0.069
1.75
±
±
±
±
±
±
±
±
±
±
±
±
F
0.004
0.10
0.004
0.10
0.004
0.10
0.004
0.10
0.004
0.10
0.004
0.10
0.138
3.50
0.138
3.50
0.138
3.50
0.138
3.50
0.217
5.50
0.217
5.50
±
±
±
±
±
±
±
±
±
±
±
±
min.
min.
min.
min.
min.
min.
min.
min.
min.
min.
min.
min.
0.059
1.50
0.059
1.50
0.071
1.80
0.071
1.80
0.106
2.70
0.106
2.70
±
±
±
±
±
±
±
±
±
±
±
±
D1
0.004
0.10
0.004
0.10
0.004
0.10
0.004
0.10
0.004
0.10
0.004
0.10
0.035
0.90
0.035
0.90
0.035
0.90
0.035
0.90
0.055
1.40
0.055
1.40
P0
0.002
0.05
0.002
0.05
0.002
0.05
0.002
0.05
0.002
0.05
0.002
0.05
T
0.157
4.00
0.157
4.00
0.157
4.00
0.157
4.00
0.157
4.00
0.157
4.00
±
±
±
±
±
±
±
±
±
±
±
±
Unit
0.004
0.10
0.004
0.10
0.004
0.10
0.004
0.10
0.004
0.10
0.004
0.10
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
Unit
0.004
0.10
0.004
0.10
0.004
0.10
0.004
0.10
0.004
0.10
0.004
0.10
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
Recommended Pad Layout
Type/Code
MLF18
MLFM15
MLF14
MLFM25
A
0.039
1.00
0.039
1.00
0.063
1.60
0.063
1.60
Rev Date: 11/20/2020
This specification may be changed at any time without prior notice
Please confirm technical specifications before you order and/or use.
B
0.031
0.80
0.031
0.80
0.047
1.20
0.047
1.20
5
C
0.059
1.50
0.059
1.50
0.063
1.60
0.063
1.60
Unit
inches
mm
inches
mm
inches
mm
inches
mm
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MLF / MLFM Series
Stackpole Electronics, Inc.
Metal Film Melf Resistor
Resistive Product Solutions
Recommended Pad Layout (cont.)
Type/Code
MLF12
MLFM1
A
0.118
3.00
0.118
3.00
B
0.067
1.70
0.067
1.70
C
0.094
2.40
0.094
2.40
Unit
inches
mm
inches
mm
Hot Spot Temperature
Pulse withstanding capacity
The single impulse graph is the result of 50 impulses of rectangular shape applied at one-minute intervals. The limit of
acceptance was a shift in resistance of less than 1% from the initial value. The power applied was subject to the
restrictions of the maximum permissible impulse voltage graph shown.
Rev Date: 11/20/2020
This specification may be changed at any time without prior notice
Please confirm technical specifications before you order and/or use.
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MLF / MLFM Series
Stackpole Electronics, Inc.
Metal Film Melf Resistor
Resistive Product Solutions
MLFM1 Single Pulse (1 Kohm)
Continuous Pulse
The continuous load graph was obtained by applying repetitive rectangular pulses where the pulse period was adjusted
so that the average power dissipated in the resistor was equal to its rated power at 70ºC. Again the limit of acceptance
was a shift in resistance of less than 1% from the initial value.
Rev Date: 11/20/2020
This specification may be changed at any time without prior notice
Please confirm technical specifications before you order and/or use.
7
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MLF / MLFM Series
Stackpole Electronics, Inc.
Metal Film Melf Resistor
Resistive Product Solutions
Frequency behavior
Resistors are designed to function according to Ohmic laws. This is basically true of resistors for frequencies up to 100
kHz. At higher frequencies, there is an additional contribution to the impedance by an ideal resistor switched in series
with a coil and both switched parallel to a capacitor. The values of the capacitance and inductance are mainly
determined by the dimensions of the terminations and the conductive path length.
The environment surrounding components has a large influence on the behavior of the component on the printed-circuit
board.
Rev Date: 11/20/2020
This specification may be changed at any time without prior notice
Please confirm technical specifications before you order and/or use.
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MLF / MLFM Series
Stackpole Electronics, Inc.
Metal Film Melf Resistor
Rev Date: 11/20/2020
This specification may be changed at any time without prior notice
Please confirm technical specifications before you order and/or use.
Resistive Product Solutions
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MLF / MLFM Series
Stackpole Electronics, Inc.
Metal Film Melf Resistor
Resistive Product Solutions
Lightning Surge
Resistors are tested in accordance with IEC 60 115-1 using both 1.2/50us and 10/700us pulse shapes. The limit of
acceptance is a shift in resistance of less than 0.5% from the initial value.
Rev Date: 11/20/2020
This specification may be changed at any time without prior notice
Please confirm technical specifications before you order and/or use.
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MLF / MLFM Series
Stackpole Electronics, Inc.
Metal Film Melf Resistor
Resistive Product Solutions
RoHS Compliance
Stackpole Electronics has joined the worldwide effort to reduce the amount of lead in electronic components and to meet the various
regulatory requirements now prevalent, such as the European Union’s directive regarding “Restrictions on Hazardous Substances”
(RoHS 3). As part of this ongoing program, we periodically update this document with the status regarding the availability of our
compliant components. All our standard part numbers are compliant to EU Directive 2011/65/EU of the European Parliament as
amended by Directive (EU) 2015/863/EU as regards the list of restricted substances.
RoHS Compliance Status
Standard
Product
Series
Description
Package /
Termination
Type
Standard
Series
RoHS
Compliant
Lead-Free Termination
Composition
Lead-Free
Mfg. Effective Date
(Std Product Series)
Lead-Free
Effective Date
Code
(YY/WW)
MLF
MLFM
Precision Metal Film Melf Resistor
Precision Metal Film Mini Melf Resistor
SMD
SMD
YES
YES
100% Matte Sn
100% Matte Sn
Always
Always
Always
Always
“Conflict Metals” Commitment
We at Stackpole Electronics, Inc. are joined with our industry in opposing the use of metals mined in the “conflict region” of the eastern
Democratic Republic of the Congo (DRC) in our products. Recognizing that the supply chain for metals used in the electronics industry
is very complex, we work closely with our own suppliers to verify to the extent possible that the materials and products we supply do
not contain metals sourced from this conflict region. As such, we are in compliance with the requirements of Dodd-Frank Act regarding
Conflict Minerals.
Compliance to “REACH”
We certify that all passive components supplied by Stackpole Electronics, Inc. are SVHC (Substances of Very High Concern) free and
compliant with the requirements of EU Directive 1907/2006/EC, “The Registration, Evaluation, Authorization and Restriction of
Chemicals”, otherwise referred to as REACH. Contact us for complete list of REACH Substance Candidate List.
Environmental Policy
It is the policy of Stackpole Electronics, Inc. (SEI) to protect the environment in all localities in which we operate. We continually strive
to improve our effect on the environment. We observe all applicable laws and regulations regarding the protection of our environment
and all requests related to the environment to which we have agreed. We are committed to the prevention of all forms of pollution.
How to Order
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M
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D
T
E
4
K
7
5
Product Series
Power Rating
Code Description Code Size
W
MLF
Standard
18 0102 0.125
MLFM
Mini
15 0102
0.2
14 0204 0.25
25 0204
0.4
12 0207
0.5
1 0207
1
Tolerance
Code Tol
Value
B
0.1%
E96, E24
D
0.5%
F
1%
J
5%
E24
Z
jumper
Rev Date: 11/20/2020
This specification may be changed at any time without prior notice
Please confirm technical specifications before you order and/or use.
Code
Description
T
7" Reel
Plastic Tape
11
Packaging
Product Code
Quantity
MLF18, MLF14,
MLFM15, MLFM25
3000
MLF12, MLFM1
2000
TCR
Code ppm
Z jumper
Y
5
T
10
S
15
E
25
C
50
D
100
Resistance Value
Four characters with the
multiplier used as the
decimal holder.
10 ohm = 10R0
100 ohm = 100R
1 Kohm = 1K00
560 Kohm = 560K
zero ohm jumper = 0R00
www.seielect.com
marketing@seielect.com
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