MF1ECT521 Datasheet, PDF (1/2 Pages) KOA Speer Electronics, Inc. – general purpose metal film leaded resistor

MF, MFS, RK
general purpose metal film leaded resistor
EU
features
• Semi-precision metal film resistors
• The discharge path resistor is recognized by UL 1676 and
c-UL (CAS-C22.2 No.1-M94). (File No. E159326) (RK only)
• 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 EU RoHS
and China RoHS requirements
dimensions and construction
L
l
D Trimming Line Ceramic Core
d
Marking
Resistive
Film
Insulation Coating
C
End Lead
Cap Wire
Derating Curve
Surface Temperature Rise
100
70
60
80
50
60
40
40
30
20
20
10
0
0
-60 -40 -20 0 20 40 60 80 100 120 140 160
0
-55
70
155
Ambient Temperature
(°C)
MF1/2
MFS1/2,MF1/4,
MF1/2 (+2%&+5%)
MF1/4
MF1
MFS1/4
25
50
75
100
% Rated Power
Type
MFS1/4
MF1/4
MFS1/2
MF1/2
MF1
RK1/4
RK1/2
RK1
L (ref.)
.126±.008
(3.2±0.2)
.248±.02
(6.3±0.5)
.248±.02
(6.3±0.5)
.374±.04
(9.5±1.0)
.610±.02
(15.5±0.5)
.248±.02
(6.3±0.5)
.374±.04
(9.5±1.0)
.610±.04
(15.5±1.0)
Dimensions inches (mm)
C (max.)
D
d (nom.)
.133
(3.4)
.280
(7.1)
.066
+.007
-.004
(1.7 ^+-00..12)
.091±.012
(2.3±0.3)
.018
(0.45)
.024
(0.6)
.280 .091±.012 .024
(7.1) (2.3±0.3) (0.6)
.437 .138±.016 .024
(11.1) (3.5±0.4) (0.6)
.721 .217±.02 .031
(18.3) (5.5±0.5) (0.8)
.280 .091±.012 .024
(7.1) (2.3±0.3) (0.6)
.437 .138±.016 .031
(11.1) (3.5±0.4) (0.8)
.720 .217±.02 .031
(18.3) (5.5±0.5) (0.8)
l
1.18±.118
(30.0±3.0)
1.50±.118
(38.0±3.0)
0.94 min.
(24.0 min.)
1.50±.118
(38.0±3.0)
ordering information
New Part #
MF
Type
MF
MFS
RK
1/4
Power
Rating
1/4: 0.25W
1/2: 0.50W
1: 1W
For further information on packaging,
please refer to Appendix C.
L
T.C.R.
E: ±25
C: ±50
D: ±100
L: ±200
G: ±250
B: ±350
C
Termination
Material
C: SnCu
applications and ratings
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%
Part
Designation
Power
Rating
@ 70°C
Minimum
Dielectric T.C.R.
Withstanding (ppm/°C)
Voltage
(B±0.1%)
E-96
Resistance Range (Ω)
(C±0.25%) (D±0.5%) (F±1.0%) (G±2.0%)
E-96 E-24 E-96 E-24 E-96 E-24
(J±5.0%)
E-24
Absolute
Maximum
Working
Voltage
Absolute
Maximum
Overload
Voltage
Operating
Temperature
Range
MFS1/4C
C: ±50
MFS1/4D 0.25W 300V D: ±100 —
MFS1/4L
L: ±200
—
—
49.9 - 562k 10 - 1M
—
2.2 - 2.2M
250V
300V
-55°C
to
+155°C
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use.
1/13/09
KOA Speer Electronics, Inc. • 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: [phone] • www.koaspeer.com
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