MFS
reduced size metal film leaded resistor
features
•
Two times the power rating of the standard body size
•
Suitable for automatic machine insertion
•
Marking: Blue-gray body color with color-coded bands
resistors
dimensions and construction
L
D
Trimming Line
Ceramic Core
d
l
Type
MFS1/4
MFS1/2
L (ref.)
.126
(3.2)
.248
(6.3)
Dimensions
inches
(mm)
C (max.)
D
d
.165
(4.2)
.280
(7.1)
l
.067±.008 .018±.002
(1.7±0.2) (0.45±0.05)
1.18±.118
.091±.012 .024±.002
(30.0±3.0)
(2.3±0.3) (0.6±0.05)
Marking
Resistive
Film
End
Cap
Lead
Wire
Insulation Coating
C
ordering information
Old Part #
SN2C, MS5OSS
Type
New Part #
MFS
Type
D
T.C.R.
1/4
Power
Rating
1/4: 0.25W
1/2: 0.5W
1001
Resistance
D
T.C.R.
C: ±50
D: ±100
F
Tolerance
L
Termination
Material
L: SnPb
C: SnCu
T52
Packaging
T52
Taping and
Forming
1/4: T52,
T26, VT, MT,
M, U
1/2: VTP,
VTE, T52,
T26
R
Packaging
A: Ammo
R: Reel
1001
Nominal
Resistance
3 significant
figures + 1
multiplier
“R” indicates
decimal on
value <10Ω
F
Tolerance
D: ±0.5%
F: ±1.0%
For further information on packaging,
please refer to Appendix C.
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use.
11/01/03
KOA Speer Electronics, Inc.
• Bolivar Drive • P Box 547 • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com
.O.
87
MFS
resistors
reduced size metal film leaded resistor
applications and ratings
Part
Designation
MFS1/4
MFS1/2
Power
Rating
@ 70°C
0.25W
0.50W
Minimum
Dielectric
Withstanding
Voltage
500V
Resistance Range
E-24, E-96
(F±1%)
10Ω - 1.0MΩ
10Ω - 2.21MΩ
(D±0.5%)
49.9 - 562K
––––
Absolute
Maximum
Working
Voltage
250V
350V
Absolute
Maximum
Overload
Voltage
500V
700V
Operating
Temperature
Range
-55°C
to
+155°C
environmental applications
Derating Curve
100
80
% Rated Power
60
40
20
0
-60 -40 -20
-55
Temperature Rise (°C)
Surface Temperature Rise
60
50
40
30
20
10
0
0
25
50
75
100
MFS1/4
MFS1/2
0
20
40
60
80 100 120 140
70
Ambient Temperature
(°C)
160
155
% Rated Power
Performance Characteristics
Parameter
Resistance
T.C.R.
Overload
Resistance to Solder Heat
Rapid Change of Temperature
Moisture Resistance
Endurance @ 70°C
High Temperature Exposure
Requirement
∆
R ±(% + 0.05Ω)
Limit
Typical
Within regulated tolerance
—
Within specified T.C.R.
0.5
0.75
1.0
1.5
1.0
0.3
0.4
0.3
1.0
0.5
Test Method
25°C
+25°C/-55°C and +25°C/+125°C
Rated voltage x 2.5 or maximum overload voltage
for 5 seconds, whichever is less
260°C ± 5°C for 10 seconds ± 1 second
-55°C (30 minutes)/+155°C (30 minutes), 5 cycles
40°C ± 2°C, 90 - 95% RH, 1000 hours, 1.5 hour ON,
0.5 hr OFF cycle
70°C ± 2°C, 1000 hours, 1.5 hour ON, 0.5 hr OFF cycle
+125°C, 100 hours
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use.
11/01/03
88
KOA Speer Electronics, Inc.
• Bolivar Drive • P Box 547 • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com
.O.
