MF, MFS, RK
general purpose metal film leaded resistor
features
•
•
•
•
•
•
Semi-precision metal film resistors
Meets requirements of MIL-R-22684
Suitable for automatic machine insertion
MFS two times the power rating of the standard body type
Marking: Blue-gray body color with color-coded bands
Products with lead-free terminations meet
RoHS requirements
resistors
dimensions and construction
L
D
Trimming Line
Ceramic Core
d
l
Type
MFS1/4
MF1/4
Marking
Resistive
Film
End
Cap
Lead
Wire
MFS1/2
MF1/2
MF1
RK1/4
RK1/2
L (ref.)
.126
(3.2)
.248
(6.3)
.248
(6.3)
.374
(9.5)
.610
(15.5)
.248
(6.3)
.374
(9.5)
Dimensions
inches
(mm)
C (max.)
D
d
.133
(3.4)
.280
(7.1)
.280
(7.1)
.437
(11.1)
.721
(18.3)
.280
(7.1)
.437
(11.1)
.066
(1.7
+.007
-.004
+0.2
)
-0.1
l
.018
(0.45)
.091±.012 .024±.002
(2.3±0.3) (0.6±0.05)
1.18±.118
(30.0±3.0)
.091±.012 .024±.002
(2.3±0.3) (0.6±0.05)
.138±.016 .031±.002
(3.5±0.4) (0.8±0.05)
.217±.02
(5.5±0.5)
.031±.002 1.50±.126
(0.8±0.05) (38.1±3.2)
Insulation Coating
C
.091±.012 .024±.002
(2.3±0.3) (0.6±0.05)
1.18±.118
.138±.016 .031±.002
(30.0±3.0)
(3.5±0.4) (0.8±0.05)
ordering information
New Part #
MF
Type
MF
MFS
RK
1/4
Power
Rating
1/4: 0.25W
1/2: 0.50W
1: 1W
L
T.C.R.
E: ±25
C: ±50
D: ±100
L: ±200
C
Termination
Material
C: SnCu
(Other
termination
styles available,
contact factory
for options)
T52
Taping and Forming
1/4: T26, T52, VT, VTP,
VTE, MT, M, U,
M10, M25
1/2: T26, T52, VTP,
VTE, M12.5, M15
1: T521
R
Packaging
A: Ammo
R: Reel
R20
Nominal
Resistance
+2%: 2 signifi-
cant figures +
1 multiplier
+0.5%,+1%:
3 significant
figures + 1
multiplier
“R” indicates
decimal on
value <100Ω
J
Tolerance
B: ±0.1%
C: ±0.25%
D: ±0.5%
F: ±1%
G: ±2%
J: ±5%
For further information on packaging,
please refer to Appendix C.
applications and ratings
Minimum
Absolute Absolute
Resistance Range (Ω)
Power
Operating
Part
Dielectric
T.C.R.
Maximum Maximum
Rating
Temperature
Designation
Withstanding (ppm/°C)
(B±0.1%) (C±0.25%) (D±0.5%) (F±1.0%) (G±2.0%) (J±5.0%)
Working Overload
@ 70°C
Range
Voltage
Voltage
Voltage
E-24
E-96
E-96
E-24 E-96 E-24 E-96
E-24
MFS1/4C
MFS1/4D
MFS1/4L
0.25W
300V
C: ±50
D: ±100
L: ±200
—
—
49.9 - 562k
10 - 1M
*1.02M - 10M
—
2.2 - 2.2M
—
2.2 - 2.2M
250V
300V
-55°C
to
+155°C
* Note: MFS1/4, 1.0% Resistance Range: 1.02M-10M is available in C(SnCu) termination material only
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use.
6/09/06
KOA Speer Electronics, Inc.
• Bolivar Drive • P Box 547 • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com
.O.
89
MF, MFS, RK
resistors
general purpose metal film leaded resistor
applications and ratings
Minimum
Absolute Absolute
Resistance Range (Ω)
Power
Operating
Part
Dielectric
T.C.R.
Maximum Maximum
Rating
Temperature
Designation
Withstanding (ppm/°C)
(B±0.1%) (C±0.25%) (D±0.5%) (F±1.0%) (G±2.0%) (J±5.0%)
Working Overload
@ 70°C
Range
Voltage
Voltage
Voltage
E-24
E-96
E-96
E-24 E-96 E-24 E-96
E-24
MF1/4C
MF1/4D
MF1/4E
MF1/4L
MFS1/2C
MFS1/2D
MFS1/2L
MF1/2C
MF1/2D
MF1/2E
MF1/2L
MF1C
MF1D
MF1E
RK1/4D
RK1/4L
RK1/2D
RK1/2L
0.25W
0.50W
500V
500V
1W
700V
0.50W
700V
0.50W
500V
0.25W
500V
C: ±50
D: ±100
E: ±25
L: ±200
C: ±50
D: ±100
L: ±200
C: ±50
D: ±100
E: ±25
L: ±200
C: ±50
D: ±100
E: ±25
D: ±100
L: ±200
D: ±100
L: ±200
47.5- 1.0M
47.5 - 1.5M
10 - 5.05M
10 - 4.99M
10 - 5.11M
47.5 - 2.0M
47.5 - 2.0M
1.0 - 10
1.0 - 6.81M
0.33 - 5.6M
0.33 - 5.6M
30.1 - 750K
24.3Ω- 750K
30.1 - 750K
30.1 - 1.0M
24.3 - 1.0M
30.1 - 1.0M
10- 2.21M
30.1 - 1.0M
1.0 - 2..21M
1.0 - 2.21M
30.1 - 1.0M
1.0 - 10
0.20 - 2.2M
0.20 - 2.2M
—
—
250V
500V
—
—
—
—
—
—
10 - 2.21M
—
2.2 - 2.2M
—
2.2 - 2.2M
350V
700V
—
47.5- 1.0M
—
47.5 - 1.5M
—
—
350V
700V
-55°C
to
+155°C
—
—
47.5 - 2.0M
—
—
7.5 - 2.49M
—
10Ω - 5.11M
47.5Ω - 1.0M 47.5 - 2.49M
—
—
—
3.3M - 33M
—
—
—
3.3M - 33M
350V
700V
47.5 - 4.64M 47.5 - 5.11M
—
—
—
—
—
—
—
—
—
—
—
—
3.09M - 25M
—
5.11M - 33M
500V
700V
700V
1000V
—
6.2M - 33M
—
6.2M - 33M
—
environmental applications
Derating Curve
100
80
% Rated Power
60
40
20
0
-60 -40 -20
-55
Surface Temperature Rise
70
Temperature Rise (°C)
60
50
40
30
20
10
0
0
25
50
75
100
MF1/2,RK1/2
MFS1/2,MF1/4
MF1/4,RK1/4
MF1
MFS1/4
0
20
40
60
80 100 120 140
70
Ambient Temperature
(°C)
160
155
% Rated Power
Performance Characteristics
Parameter
Temperature Coefficient
Short Time Overload
Resistance to Solder Heat
Moisture Resistance
Load Life
Failure Rate
Temperature Cycling
Vibration
Shock
Terminal Strength
Current Noise
Voltage Coefficient
Low Temperature Operation
±200ppm/°C
±(0.30% + 0.05Ω)
±(0.20% + 0.05Ω)
±1.5%
<10
-5
%/1000 hours
±(0.50% + 0.05Ω)
±(0.20% + 0.05Ω)
5 # Minimum
<1.0µv/v/decade
<20ppm/v
±(0.30% + 0.05Ω)
06/09/06
Requirement
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use.
90
KOA Speer Electronics, Inc.
• Bolivar Drive • P Box 547 • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com
.O.
