MLFA Series
Metal Film Melf Resistor – AEC-Q200 Qualified
Features:
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Thin film technology for precision and stability
Excellent power to size ratio
Outstanding pulse handling
Excellent overall stability
Sn termination on Ni barrier layer
Tight tolerance down to ± 0.1%
Extremely low TCR down to ± 5 ppm/ºC
High power rating up to 1W
SMD enabled structure
AEC-Q200 compliant
100% RoHS compliant and lead free without exemption
Halogen free
REACH compliant
Stackpole Electronics, Inc.
Resistive Product Solutions
Electrical Specifications
Type/Code
Package
Size
Power Rating
(Watts)
@ 70 ºC
0.3
Maximum
Working
Voltage
(1)
Maximum
Overload
Voltage
(2)
TCR (ppm/ºC)
0.1%
-
Ohmic Range (Ω) and Tolerance
0.5%
1%
1 - 1M
5%
± 50
-
1 - 1M
0102
200
400
± 100
MLFA13
Jumper: 2 A
-
0Ω (< 15mΩ)
-
±5
10 - 332K
10 - 300K
± 15
0.4
1 - 3.4M
± 25
10 - 1M
10 - 3.4M
MLFA25
0204
200
400
0.2 - 3.4M
± 50
10 - 1M
1 - 3.4M
-
0.1 - 1M
± 100
Jumper: 3 A
-
0Ω (< 15mΩ)
-
±5
10 - 332K
10 - 300K
± 15
1
1 - 3.4M
± 25
10 - 1M
10 - 3.4M
MLFA1
0207
350
700
0.2 - 3.4M
± 50
10 - 1M
1 - 3.4M
-
0.1 - 1M
± 100
Jumper: 5 A
-
0Ω ( 15mΩ)
(1)
Working Voltage =
√ P*R
or Max. Operating Voltage listed above, whichever is lower.
(2)
Overload Voltage = 2.5*
√ P*R
or Max. Overload Voltage listed above, whichever is lower.
(3)
Lower TCR with lower Power Ratings may be available - contact Stackpole
RCWV (Rated Continuous Working Voltage) =
√ P*R
or Max Operating Voltage, whichever is lower.
(3)
Mechanical Specifications
Type/Code
MLFA13
MLFA25
MLFA1
Weight (g)
(1000 pc)
7.7
18.7
80.9
L
Body Length
0.087 ± 0.004
2.20 ± 0.10
0.138 ± 0.008
3.50 ± 0.20
0.232 ± 0.008
5.90 ± 0.20
L1 (min.)
Inner Body Length
0.043
1.10
0.067
1.70
0.114
2.90
D
Body Diameter
0.043 ± 0.004
1.10 ± 0.10
0.055 ± 0.006
1.40 ± 0.15
0.087 ± 0.008
2.20 ± 0.20
D1
Middle Body Dia.
0.043 +0/-0.006
1.10 +0/-0.15
0.055 +0/-0.008
1.40 +0/-0.2
0.087 +0/-0.008
2.20 +0/-0.2
K
Termination
0.018 ± 0.002
0.45 ± 0.05
0.031 ± 0.004
0.80 ± 0.10
0.051 ± 0.004
1.30 ± 0.10
Unit
inches
mm
inches
mm
inches
mm
Rev Date: 2/10/2022
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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MLFA Series
Metal Film Melf Resistor – AEC-Q200 Qualified
Stackpole Electronics, Inc.
Resistive Product Solutions
Performance Characteristics
Test
Temperature
Coefficient of
Resistance (T.C.R.)
Test Method
JIS-C-5201-1 4.8
IEC-60115-1 4.8
Test Method
At 25°C / - 55°C and 25°C / + 125°C, 25°C
is the reference temperature.
5ppm: At 25°C / -10°C and 25°C / +85°C,
25°C is the reference temperature
RCWV*2.5 or max. overload voltage
whichever is lower for 5 seconds
Test Specification
5% and below
As specified
10 Ω - 270 KΩ: ± (0.1% + 0.01 Ω)
Short Time Overload
JIS-C-5201-1 4.13
IEC-60115-1 4.13
Insulation Resistance
JIS-C-5201-1 4.6
IEC-60115-1 4.6
MIL-STD-202
Method 108
< 10 Ω & > 270 KΩ: ± (0.15% + 0.01 Ω)
MLFA13: ± (0.15% + 0.01 Ω)
5 ppm/ºC: ± (0.05% + 0.01 Ω)
≥10G
10 Ω - 270 KΩ: ± (0.25% + 0.01 Ω)
<10 Ω & > 270 KΩ: ± (0.5% + 0.01 Ω)
MLFA13: ± (0.5% + 0.01 Ω)
< 15 mΩ
Jumper
Max. overload voltage for 1 minute
Condition D Steady State TA = 125°C at
derated power. Measurement at 24 ± 4
hours after test conclusion.
5 ppm/ºC: 70 ± 2°C, RCWV for 1000 hours
with 1.5 hours "ON" and 0.5 hour "OFF"
1000 hours 85°C / 85% R.H. 10% of
operating power
at +125°C / +155°C for 1000 hours
Operational Life
< 15 mΩ
Biased Humidity
High Temperature
Exposure
Board Flex
MIL-STD-202
Method 103
MIL-STD-202
Method 108
AEC-Q200-005
JIS-5201-1 4.17
IEC 60115-1 4.17
J-STD 002
MIL-STD-202
Method 210
JIS-C-5201-1 4.7
IEC 60115-1 4.7
JIS-C-5201-1 4.18
IEC-60068-2-58 8.2.1
JESD22
Method JA-104
MIL-STD-202
Method 213
MIL-STD-202
Method 204
AEC-Q200-002
MIL-STD-202
Method 215
AEC-Q200-006
UL-94
Bending once for 60 seconds with 2 mm
10 Ω - 270 KΩ: ± (0.5% + 0.01 Ω)
< 10 Ω & > 270 K Ω: ± (1% + 0.01 Ω) < 15 mΩ
MLFA13: ± (2% + 0.01 Ω)
10 Ω - 270 K Ω: ± (0.25% + 0.01 Ω)
< 10 Ω & > 270 KΩ: ± (1% + 0.01 Ω) < 15 mΩ
MLFA13: ± (1% + 0.01 Ω)
10 Ω - 270 KΩ: ± (0.1% + 0.01 Ω)
< 10 Ω & > 270 KΩ: ± (0.5% + 0.01 Ω) < 15 mΩ
MLFA13: ± (0.5% + 0.01 Ω)
95% min. coverage
10 Ω - 270 KΩ: ± (0.1% + 0.01 Ω)
< 10 Ω & > 270 KΩ: ± 0.25% + 0.01 Ω)
< 15 mΩ
MLFA13: ± (0.25% + 0.01 Ω)
5 ppm/ºC: ± (0.05% + 0.01 Ω)
No breakdown or flashover
Individual leaching area
≤
5%
Total leaching area
≤
10%
10 Ω - 270 KΩ: ± (0.25% + 0.01 Ω)
< 10 Ω & > 270 KΩ: ± 0.5% + 0.01 Ω) < 15 mΩ
MLFA13: ± (1% + 0.01 Ω)
± (0.25% + 0.01 Ω)
< 15 mΩ
Solderability
245 ± 5°C for 3 seconds
Resistance to
Soldering Heat
Voltage Proof
Leaching
Temperature Cycling
260 ± 5°C for 10 seconds
1.42 times max. operating voltage for 1
minute
260 ± 5ºC for 30 seconds
-55°C to + 125°C, 1000 cycles
Wave Form: Tolerance for half sine shock
pulse. 'Peak value is 100 g's. Normal
duration (D) is 6.
5 g's for 20 minutes.,
12 cycles each of 3 orientations
10-2000 Hz
Human body, 2 KV
Add aqueous wash chemical - OKEM clean
or equivalent. Do not use banned solvents.
Force of 1.8 Kg for 60 seconds
V - 0 or V - 1 are acceptable.
Electrical test not required.
Mechanical Shock
Vibration
ESD
Resistance to
Solvents
Terminal Strength
Flammability
± (0.5% + 0.01 Ω)
± (0.5% + 0.05 Ω)
< 15 mΩ
< 15 mΩ
No visible damage on appearance and marking.
No breakage
No ignition of the tissue paper or scorching of the
pinewood board
RCWV (rated continuous working voltage) =
√ P*R
or max. operating voltage whichever is lower
Storage temperature: 15 ~ 28ºC. Humidity < 80% R.H.
Operating temperature range is -55°C to +125°C for 5 ppm/ºC
Operating temperature range is -55°C to +155°C for all others except 5 ppm/ºC
Rev Date: 2/10/2022
This specification may be changed at any time without prior notice
Please confirm technical specifications before you order and/or use.
2
www.seielect.com
marketing@seielect.com
MLFA Series
Metal Film Melf Resistor – AEC-Q200 Qualified
Soldering Condition:
Stackpole Electronics, Inc.
Resistive Product Solutions
(1) Time of IR reflow soldering at maximum temperature point 260°C: 10 seconds
(2) Time of wave soldering at maximum temperature point 260°C: 10 seconds
(3) Time of soldering iron at maximum temperature point 410°C: 5 seconds
Pulse Withstanding Capacity
The single impulse graph is the result of the impulse of rectangular shape applied. 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: 2/10/2022
This specification may be changed at any time without prior notice
Please confirm technical specifications before you order and/or use.
5
www.seielect.com
marketing@seielect.com
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