MF
Metal Film Resistors
INTRODUCTION
The MF series Metal Film Resistors are manufactured by vacuum deposition of multiple layers of
metal film on high thermal conductive ceramic rods and are coated with layers of lacquer.
FEATURES
10
•
•
•
•
•
Low Temperature Coefficient Resistance.
Wide Resistance Range.
Tight Tolerance.
Precision Performance Characteristics.
Lead Free
RATINGS
Type
Rated Power at 70° C
Operating Temp. Range
Derated to 0 Load at
Maximum Working Voltage
Maximum Overload Voltage
Resistance Range
1% E-96, E-24
5%, E-24
Temperature Coefficient
MF 50
1/6W
MF 55
1/4W
MF55SS
0.4W
MF 60
MF60SS
0.6W
MF 65
1W
MF 70
2W
200V
400V
250V
500V
1/2W
-55ºC to +155ºC
+155ºC
200V
350V
400V
700V
1Ω-10MΩ
50ppm/° C
1Ω-10MΩ
50ppm/° C
250V
500V
1Ω-10MΩ
50ppm/° C
500V
700V
1Ω-10MΩ
50ppm/° C
500V
1000V
1Ω-10MΩ
50ppm/° C
1Ω-10MΩ 1Ω-10MΩ
50ppm/° C
50ppm/° C
DIMENSIONS
l
L
ød
øD
C
Type
MF50/MF55SS
MF55/MF60SS
MF 60
MF 65
MF 70
DIMENSIONS
L
3.30± 0.4
6.35± 0.5
9.00± 0.5
12.00± 1.0
16.00± 1.0
(Millimeters)
C
4.1 Max
7.1 Max
11.8 Max
15.0 Max
22.0 Max
D
1.70± 0.2
2.30± 0.3
3.20± 0.5
4.50± 0.5
5.00± 0.5
l
28.0± 3.0
28.0± 3.0
28.0± 3.0
35.0± 3.0
35.0± 3.0
d
0.45± 0.05
0.60± 0.05
0.60± 0.05
0.80± 0.05
0.80± 0.05
ASJ PTE LTD
MF
Metal Film Resistors
PERFORMANCE CHARACTERISTICS
Performance Test
DC Resistance
Resistance Temperature Coefficient
Short Time Overload
Dielectric Withstanding Voltage
Insulation Resistance
Current Noise
Solderability
Resistance to Soldering Heat
Robustness of electrode
(Terminal Strength)
Resistance to Solvents
Moisture Resistance
Temperature Cycling
Low Temperature Operation
High Temperature Exposure
Thermal Shock
Loadlife
DERATING CURVE
100
Test Method
MIL-STD-202F, Method 303
MIL-STD-202F, Method 304
MIL-R-55342E, Sect. 4.7.5
MIL-STD-202F, Method 301
MIL-STD-202F, Method 302
MIL-STD-202F, Method 308
MIL-STD-202F, Method 208
MIL-R-55342E, Sect. 4.7.7
MIL-STD-202F, Method 211
MIL-STD-202F, Method 215
MIL-STD-202F, Method 106
MIL-STD-883F, Method 1010.7
MIL-R-55342E, Sect. 4.7.4
MIL-R-55342E, Sect. 4.7.6
MIL-STD-202F, Method 107
MIL-STD-202F, Method 108
Specification
±
1% Tolerance
±
50ppm/ºC
±
(0.5% + 0.05Ω)
±
(0.5% + 0.05Ω) No Mechanical Damage
>10
4
MΩ
<0.3µ v/v
>95% coverage
±
(0.5% + 0.05Ω)
±
(0.25% + 0.05Ω) No Mechanical Damage
No Damage to lacquer & colour coding
±
(0.5% + 0.05Ω)
±
(0.5% + 0.05Ω)
±
(0.5% + 0.05Ω)
±
(1.0% + 0.1Ω)
±
(0.5% + 0.1Ω)
±
(1.0% + 0.1Ω)
11
Rated Power (%)
80
60
40
20
-55ºC
70ºC
155ºC
0
-60
-40
-20
0
20
40
60
80
100
120
140
160
180
200
Ambient Temperature (ºC)
ORDERING CODE
MF XXXX
-
XXXX X
-
X X
Resistor
Metal Film
Resister
Size
50
55SS
55
60SS
60
65
70
Nominal Resistance
3-
Digit
Resistors
4-
E24 Series
2.2Ω=2R2
100Ω=101
E96 Series
Resistance
Tolerance
J=± 5%
F=± 1%
D=± 0.5%
B=± 0.1%
Packaging
A=Ammo (52MM)
S=Spool (52MM)
M=Ammo (26MM)
R=Spool (26MM)
N=Ammo (73MM)
Q=Spool (73MM)
Quantity
1 = 1000 pcs
2 = 2000 pcs
3 = 3000 pcs
5 = 5000 pcs
Digit 10.2Ω=10R2
10KΩ=1002
ASJ PTE LTD
PCB Design
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