DATA SHEET
A
METAL FILM RESISTORS
General Purpose
MFR Series
±0.5%, ±1%, ±2%, ±5%
RoHS compliant & Halogen Free
1/6W to 3W
Product specification
–
September 28, 2021 V.1
Through Hole Resistors
Product Specification
2
16
Metal Film Resistors
MFR
ORDERING INFORMATION
Part number of the general purpose metal film resistor are identified by
the series, power rating, tolerance, packing, temperature coefficient,
,
forming and resistance value.
PART NUMBER
APPLICATIONS
Ÿ
All general purpose
applications
Ÿ
Power applications
MFR
(1)
200
(2)
F
(3)
T
(4)
F
(5)
73-
(6)
100R
(7)
(1) SERIES
MFR S
Series
(2) POWER RATING
EATURES
Ÿ
AEC-Q200 qualified
Ÿ
Wide resistance range
Ÿ
PPAP ready
(MFR-25/MFR50S/MFR-50)
Ÿ
High stability
Ÿ
RoHS compliant &
halogen-free
-12 = 1/6W
12
25S = 1/4W
-25 = 1/4W
25
50S = 1/2W
(3) TOLERANCE
D =
±0.5%
J =
±5%
(4) PACKAGING
R = Reel Pack
-50 = 1/2W
100 = 1W
2WS = 2W
200 = 2W
3WS = 3W
1WS = 1W
F =
±1%
G =
±2%
±
T = Box Pack
B = Bulk
(5) TEMPERATURE COEFFICIENT OF RESISTANCE
E
E=±50ppm/°C
(6) FORMING
26 = 26mm
26-
52 = 52.4mm
52-
73 = 73mm
73-
M=M
M-Type Forming
MB = M-form W/fla
F = F Type
FK = FK Type
52A=52.4mm
ψd
0.4±0.02mm
52A=52.4mm,
52B=52.4mm
ψd
0.45±0.02mm
52B=52.4mm,
52C=52.4mm
ψd
0.5±0.02mm
52C=52.4mm,
52G=52.4mm
ψd ≥
0.6mm
52G=52.4mm,
52H=52.4mm , non-painting on soldering spots
FFK = F-form Kink
form
FKK = FKK Type
MT = MT Type Forming
FT = FT Type Forming
PN = PANAsert
AV = AVIsert
F=±100ppm/°C
- = Based on spec
(7) RESISTANCE VALUE
)
E24 & E96 & E192 Series
Example:
100 = 100Ω, 10K = 10,000Ω, 1M = 1,000,000Ω
100R
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Sep. 28, 2021
V.0
Through Hole Resistors
Product Specification
3
16
Metal Film Resistors
MFR
DIMENSIONS
Unit: mm
Normal
MFR-12
MFR-25
MFR-50
MFR100
MFR200
Miniature
MFR25S
MFR50S
MFR1WS
MFR2WS
MFR3WS
L
3.4
±
0.3
6.3
±
0.5
9.0
±
0.5
11.5
±
1.0
15.5
±
1.0
ψD
1.9
±
0.2
2.4
±
0.2
3.3
±
0.3
4.5
±
0.5
5.0
±
0.5
H
28
±
2.0
28
±
2.0
26
±
2.0
35
±
2.0
33
±
2.0
ψd
0.45
±
0.05
0.55
±
0.05
0.55
±
0.05
0.8
±
0.05
0.8
±
0.05
DERATING CURVE
Rated Power (%)
100
80
60
40
20
20
40
70
100
155
Ambient Temperature (°C)
ELECTRICAL CHARACTERISTICS
CHARACTERISTICS MFR-12
Power Rating
at 70
°C
Maximum Working
Voltage
Maximum Overload
Voltage
Voltage Proof on
Insulation
Resistance Range
Operating Temp.
Range
Temperature
Coefficient
1/6W
200V
400V
300V
MFR25S MFR-25
1/4W
200V
400V
400V
1/4W
250V
500V
500V
MFR50S MFR-50
1/2W
300V
600V
500V
1/2W
350V
700V
500V
MFR1WS
1W
400V
800V
700V
MFR100 MFR2WS
1W
500V
1000V
1000V
2W
500V
1000V
1000V
MFR3WS
3W
500V
1000V
1000V
1Ω ~ 4M7Ω for E24 & E96 series value
- 55°C to +155°C
±50ppm/°C
,
±100ppm/°C
Note: For resistance value out of above range is by request.
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Sep. 28, 2021
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Through Hole Resistors
Product Specification
4
16
Metal Film Resistors
MFR
TEST AND REQUIRMENTS
TEST
Short Time Overload
TEST METHOD
IEC 60115-1 4.13
PROCEDURE
2.5 times RCWV for 5 sec.(Not more than
maximum overload voltage)
Voltage Proof on
Insulation
Temperature Coefficient
Insulation Resistance
Solderability
Solvent Resistance of
Marking
Robustness of
Terminations
Periodic-pulse Overload
IEC 60115-1 4.39
IEC 60115-1 4.16
Direct load for 10 Sec. in the direction of
the terminal leads
4 times RCWV 10,000 cycles (1 Sec. on,
25 Sec.off)
Damp Heat Steady State
IEC 60115-1 4.24
40±2°C,90-95% RH for 56 days, loaded
with 0.1 times RCWV
Endurance at 70°C
IEC 60115-1 4.25
70±2°C at RCWV(or Umax., whichever
less) for 1,000 Hr.(1.5 Hr.on,0.5 Hr. off)
Temperature Cycling
IEC 60115-1 4.19
è
-55°C
è
Room Temp.
è
±0.75%+0.05Ω
±1.5%+0.05Ω
±1.5%+0.05Ω
±1.0%+0.05Ω
IEC 60115-1 4.8
IEC 60115-1 4.6
IEC 60115-1 4.17
IEC 60115-1 4.30
IEC 60115-1 4.7
In V-Block for 60 sec. test voltage as
above table
Between -55°C to +155°C
In V-Block for 60 sec.
245±5°C for 3±0.5 Sec.
IPA for 5±0.5 Min. with ultrasonic
By Type
>10,000MΩ
95% Min. coverage
No deterioration of
coatings and markings
≥2.5Kg(24.5N)
No Breakdown
APPRAISE
±0.25%+0.05Ω
+155°C Room Temp.(5 cycles)
Resistance to Soldering
Heat
IEC 60115-1 4.18
260±3°C for 10±1 Sec., immersed to a
point 3±0.5mm from the body
±0.25%+0.05Ω
Note:
RCWV (Rated Continuous Working Voltage ):
The DC or AC (rms) continuous working voltage corresponding to the rated power is determined by the following
formula:
V=√(P X R)
or max. working voltage whichever is less
Where
V=Continuous rated DC or
AC (rms) working voltage (V)
P=Rated power (W)
R=Resistance value (Ω)
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Sep. 28, 2021
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Through Hole Resistors
Product Specification
5
16
Metal Film Resistors
MFR
PULSE DIAGRAMS
MFR25S Series: Pmax.: Maximum permissible peak pulse power
ti: Pulse duration
tp: Pulse repetition time
MFR50S Series: Pmax.: Maximum permissible peak pulse power
ti: Pulse duration
tp: Pulse repetition time
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