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RK1/4BCT252A8253F

Description
Fixed Resistor, Metal Film, 0.25W, 825000ohm, 500V, 1% +/-Tol, 350ppm/Cel, Through Hole Mount, AXIAL LEADED
CategoryPassive components    The resistor   
File Size125KB,2 Pages
ManufacturerKOA
Environmental Compliance
Download Datasheet Parametric View All

RK1/4BCT252A8253F Overview

Fixed Resistor, Metal Film, 0.25W, 825000ohm, 500V, 1% +/-Tol, 350ppm/Cel, Through Hole Mount, AXIAL LEADED

RK1/4BCT252A8253F Parametric

Parameter NameAttribute value
Is it Rohs certified?conform to
Objectid145067271956
package instructionAXIAL LEADED
Reach Compliance Codecompliant
Country Of OriginJapan
ECCN codeEAR99
YTEOL6.95
Lead diameter0.6 mm
Lead length24 mm
Installation featuresTHROUGH HOLE MOUNT
Number of terminals2
Maximum operating temperature155 °C
Minimum operating temperature-55 °C
Package diameter2.3 mm
Package length6.3 mm
Package formAxial
method of packingAMMO PACK
Rated power dissipation(P)0.25 W
Rated temperature70 °C
resistance825000 Ω
Resistor typeFIXED RESISTOR
surface mountNO
technologyMETAL FILM
Temperature Coefficient350 ppm/°C
Terminal shapeWIRE
Tolerance1%
Operating Voltage500 V
MF, MFS, RK
general purpose metal film leaded resistor
EU
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
Products with lead-free terminations meet EU RoHS
and China RoHS requirements
AEC-Q200 Qualified: MF1/4, MFS1/4, MFS1/2
resistors
dimensions and construction
L
D
Trimming Line
Ceramic Core
d
l
Type
MFS1/4
MF1/4
L (ref.)
.126±.008
(3.2±0.2)
.248±.02
(6.3±0.5)
.248±.02
(6.3±0.5)
.354±.04
(9.0±1.0)
.354±.04
(9.0±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)
.280
(7.1)
.437
(11.1)
.437
(11.1)
.721
(18.3)
.280
(7.1)
.437
(11.1)
.720
(18.3)
.066
(1.7
+.007
-.004
+0.2
)
-0.1
l*
.018
(0.45)
.024
(0.6)
.024
(0.6)
.024
(0.6)
.024/.031
(0.6)/(0.8)
.031
(0.8)
.024
(0.6)
.024
(0.6)
.031
(0.8)
1.50±.118
(38.0±3.0)
0.94 min.
(24.0 min.)
1.50±.118
(38.0±3.0)
1.10±.118
(28.0±3.0)
.091±.012
(2.3±0.3)
.091±.012
(2.3±0.3)
.138±.016
(3.5±0.4)
.138±.016
(3.5±0.4)
.217±.02
(5.5±0.5)
.091±.012
(2.3±0.3)
.138±.016
(3.5±0.4)
.217±.02
(5.5±0.5)
Marking
Resistive
Film
End
Cap
Lead
Wire
MFS1/2
MF1/2C
MF1/2D
Insulation Coating
C
Derating Curve
100
80
% Rated Power
60
40
20
0
-60 -40 -20
-55
Surface Temperature Rise
70
Temperature Rise (°C)
MF1/2L
MF1
RK1/4
RK1/2
MFS1/2
MF1/2
MF1
MFS1/4
MF1/4
60
50
40
30
20
10
0
0
25
50
75
0
80 100 120 140 160
70
155
Ambient Temperature
(°C)
20
40
60
100
RK1
% Rated Power
* Lead length changes depending on taping and forming.
ordering information
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
G: ±250
B: ±350
C
Termination
Material
C: SnCu
T52
Taping and
Forming
1/4: T26, T52, VT,
VTP, VTE, MT,
M, U, M10,
M12.5
1/2: T26, T52,
VTP, VTE,
M12.5, M15
1: T521
8
Lead
Diameter
MF1/2L: T52
& Bulk Only:
6: 0.6mm
8: 0.8mm
Blank: All
others sizes
& packaging
R
Packaging
A: Ammo
R: Reel
R20
Nominal
Resistance
+2%: 2 significant
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-192 E-24 E-96
E-24
-55°C
MFS1/4C
C: ±50
49.9 -
to
0.25W
300V
10 - 1M
250V
500V
562k
MFS1/4D
D: ±100
+155°C
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use.
8/08/18
KOA Speer Electronics, Inc.
• 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com
169
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