Through-hole resistors
General Type
Metal Film Resistors
Normal & Miniature Style [ MFR Series ]
FEATURES
Power Rating
1/6W, 1/4W, 1/2W, 1W, 2W, 3W
Resistance Tolerance
±0.5%, ±1%, ±5%
T.C.R.
±15ppm/°C, ±25ppm/°C, ±50ppm/°C, ±100ppm/°C
DERATING CURVE
For resistors operated in ambient temperatures above 70°C, power rating must be derated
in accordance with the curve below.
INTRODUCTION
The MFR Series Metal Film Resistors are
manufactured using a vacuum sputtering system
to deposit multiple layers of mixed metal
alloys and passivative materials onto a carefully
treated high grade ceramic substrate. After a
helical groove has been cut in the resistive layer,
tinned connecting leads of electrolytic copper
are welded to the end-caps. The resistors are
coated with layers of blue color lacquer.
Rated Load (%)
70
155 °C
100
80
60
40
20
20
40
60
80
100 120 140 160
Ambient Temperature (°C)
DIMENSIONS
Unit: mm
STYLE
ød
H
L
øD
DIMENSION
Normal
Miniature
L
øD
H
ød
MFR-12
MFR25S
3.4±0.3
1.9±0.2
28±2.0
0.45±0.05
MFR-25
MFR50S
6.3±0.5
2.4±0.2
28±2.0
0.55±0.05
MFR-50
MFR1WS
9.0±0.5
3.3±0.3
26±2.0
0.55±0.05
MFR100
MFR2WS
11.5±1.0
4.5±0.5
35±2.0
0.8±0.05
MFR200
MFR3WS
15.5±1.0
5.0±0.5
33±2.0
0.8±0.05
5
Note:
ELECTRICAL CHARACTERISTICS
STYLE
MFR-12
MFR25S
Power Rating at 70°C
1/6W
1/4W
Maximum Working Voltage
200V
250V
300V
350V
400V
500V
Maximum Overload Voltage
400V
500V
600V
700V
800V
1,000V
Voltage Proof on Insulation
300V
700V
1,000V
Resistance Range
1Ω - 10MΩ & 0Ω for E24 & E96 series value
Operating Temp. Range
-55°C to +155°C
Temperature Coefficient
±15ppm/°C, ±25ppm/°C, ±50ppm/°C, ±100ppm/°C
400V
MFR-25
MFR50S
MFR-50
1/2W
500V
MFR1WS MFR100
MFR2WS MFR200
MFR3WS
1W
2W
3W
Note: Special value is available on request
ENVIRONMENTAL CHARACTERISTICS
PERFORMANCE TEST
TEST METHOD
APPRAISE
Short Time Overload
IEC 60115-1 4.13
2.5 times RCWV for 5 Sec.
±0.25%+0.05Ω
Voltage Proof on Insulation
IEC 60115-1 4.7
in V-block for 60 Sec., test voltage by type
By type
Temperature Coefficient
IEC 60115-1 4.8
-55°C to +155°C
By type
Insulation Resistance
IEC 60115-1 4.6
in V-block for 60 Sec.
>10,000MΩ
Solderability
IEC 60115-1 4.17
235±5°C for 3±0.5 Sec.
95% Min. coverage
Solvent Resistance of Marking
IEC 60115-1 4.30
IPA for 5±0.5 Min. with ultrasonic
No deterioration of
coatings and markings
Robustness of Terminations
IEC 60115-1 4.16
Direct load for 10 Sec. in the direction of the terminal leads
≥2.5kg (24.5N)
Periodic-pulse Overload
IEC 60115-1 4.39
4 times RCWV 10,000 cycles (1 Sec. on, 25 Sec. off)
±1.0%+0.05Ω
Damp Heat Steady State
IEC 60115-1 4.24
40±2°C, 90-95% RH for 56 days, loaded with 0.1 times RCWV
±1.5%+0.05Ω
Endurance at 70°C
IEC 60115-1 4.25
70±2°C at RCWV for 1,000 Hr. (1.5 Hr. on, 0.5 Hr. off)
±1.5%+0.05Ω
Temperature Cycling
IEC 60115-1 4.19
-55°C Room Temp. +155°C Room Temp. (5 cycles)
±0.75%+0.05Ω
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) = Power Rating x Resistance Value or Max. working voltage listed above, whichever less.
Revision: 201304
88
Explanations Of Ordering Code
MFR
-12
F
Code 7
Tolerance
T
F
Code 8
Packing Style
Code 9
Temperature Coefficient of Resistance
Code 1 - 3
Series Name
Code 4 - 6
Power Rating
See Index
-05 = ød0.5mm
P = ±0.02 %
T = Tape/Box
-06 = ød0.6mm
A = ±0.05 %
R = Tape/Reel
- = Base on Spec.
-07 = ød0.7mm
B = ±0.1 %
B = Bulk
52-
100R
Code 10 - 12
Forming Type
Code 13 - 17
Resistance Value
26- = 26mm
0R1 = 0.1
52- = 52.4mm
100R = 100
A = ±5 ppm/°C
73- = 73mm
10K = 10,000
81- = 81mm
10M = 10,000,000
-08 = ød0.8mm
C = ±0.25%
B = ±10 ppm/°C
-10 = ød1.0mm
D = ±0.5 %
C = ±15 ppm/°C
91- = 91mm
-14 = ød1.4mm
F = ±1 %
S = ± 20ppm/°C
F = F Type
-12 = 1/6W
G = ±2 %
D = ±25 ppm/°C
FK = FK Type
-25 = 1/4W
J = ±5 %
E = ±50 ppm/°C
FKK = FKK Type
25S = 1/4WS
K = ±10 %
F = ±100 ppm/°C
FFK = F-form Kink
-50 = 1/2W
- = Base on Spec.
G = ±200 ppm/°C
M = M-Type Forming
50S = 1/2WS
H = ±250 ppm/°C
MB = M-form W/flat
100 = 1W
I = ±300 ppm/°C
MT = MT Type Forming
1WS = 1WS
J = ±350 ppm/°C
MR = MR Type
200 = 2W
AV = AVIsert
2WS = 2WS
PN = PANAsert
204 = 0.4W
207 = 0.6W
300 = 3W
3WS = 3WS
3WM = 3WM
400 = 4W
500 = 5W
5WS = 5WS
5SS = 5WSS
700 = 7W
7WS = 7WS
10A = 10W
20A = 20W
30A = 30W
40A = 40W
50A = 50W
10S = 10WS
15A = 15W
25A = 25W
10B = 100W
25B = 250W
EXCEPTION:
• Cement series:
• JPW series:
: Special packing style code
B: B
ulk with wirewound or metal oxide sub-assembly for resistance value
W: Bulk with ceramic based wirewound sub-assembly for resistance value
M: Bulk with metal oxide sub-assembly for resistance value
F: Bulk with Fiberglass based wirewound sub-assembly for resistance value
: Without forming code
Example:
SQP500JB-10R
: without resistance value code
Example:
JPW-06-T-52-
Mouser Electronics
Authorized Distributor
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MFR25SFRF52-60K4 MFR-25FTF52-332K MFR100FTE52-12K1 MFR-25FRE52-510K MFR-25FTF52-137K
MFR25SFRF52-422R MFR-25FTF52-215R MFR-25FTF52-3K16 MFR-25FTF52-52K3 MFR-25FTF52-806K MFR25FTF52-196K MFR-25FTF52-243K MFR25SFRF52-162R MFR-50FRE52-200K MFR-50FRE52-4K7 MFR25FTF52-402K MFR-50FRF52-127K MFR-25FTF52-78R7 MFR25SFRF52-48K7 MFR25SFRF52-237R MFR25FTF52-365K MFR25SFRF52-39K2 MFR25SFTF52-301K MFR-25FRE52-28K7 MFR100FTF52-200R
MFR100FTF73-3K MFR-25FTF52-23K2 MFR-25FTF52-118K MFR-50FRF52-4K22 MFR-25FTF52-1K87 MFR25FRE52-383R MFR-25FTF52-57K6 MFR-12FRF52-49R9 MFR-50FRF52-1K24 MFR-25FTF52-1K15 MFR25FTF52-3K57 MFR-12FRF52-15R8 MFR-25FRE52-820R MFR-25FTF52-820R MFR-50FRF52-6K49
MFR25SFTF52-1K3 MFR25SFRF52-4K12 MFR-50FTE52-30K MFR25SFTF52-100K MFR25SFTF52-22K MFR25FTF52-7K15 MFR100FTF52-2K2 MFR-25BTE52-11K5 MFR100FTF73-2K7 MFR-25FTF52-681R MFR25SFTF524K3 MFR-25FTF52-523R MFR-25FRE52-18K7 MFR25SFTF52-6K2 MFR-25FTF52-169K MFR-25FTF52-1K24
MFR25SFRF52-549K MFR1WSCTD52-38K8 MFR-25FTF52-18K MFR-25FRE52-576K MFR1WSCTD52-10K MFR25DTD52-6K04 MFR-50FRF52-47K MFR100FTF73-1K1 MFR-50FRF52-115K MFR-12FRF52-768R MFR-25FRE52237K MFR25SFRF52-1K5 MFR100FTF52-200K MFR-25FTF52-107K MFR-50FRF52-274K MFR-25FRE52-16K2
MFR25SFRF52-32K4 MFR-25FRE52-6K19 MFR25SFRF52-45K3 MFR-25FRE52-1K2 MFR-25FTF52-301R MFR25FRE52-909K MFR25SFTF52-12K MFR-25FRE52-13K3 MFR-25FTF52-270K MFR25SFTF52-118K MFR50FRE52-43K2 MFR-50FRF52-23K7 MFR-25FRE52-169K MFR-25FTF52-604K MFR-50FRF52-3K65 MFR25FRE52-23K2 MFR100FTE52-200K MFR-50FRF52-3K32 MFR-25FRE52-34K8 MFR25SFTF52-422K MFR25FRE52-348K MFR-25FTE52-1M4 MFR25SFTF52-61K9 MFR-50FRF52-301K MFR25SFTF52-20K5
MFR25SFTF52-2K1 MFR-25FTF52-21K5 MFR25SFTF52-1K4
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