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MFR4-18KFI

Description
RESISTOR, METAL FILM, 0.5W, 1%, 50ppm, 18000ohm, THROUGH HOLE MOUNT, AXIAL LEADED
CategoryPassive components    The resistor   
File Size1MB,4 Pages
ManufacturerTT Electronics plc
Websitehttp://www.ttelectronics.com/
Environmental Compliance  
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MFR4-18KFI Overview

RESISTOR, METAL FILM, 0.5W, 1%, 50ppm, 18000ohm, THROUGH HOLE MOUNT, AXIAL LEADED

MFR4-18KFI Parametric

Parameter NameAttribute value
Is it lead-free?Lead free
Is it Rohs certified?conform to
package instructionAxial,
Reach Compliance Codecompliant
ECCN codeEAR99
structureTubular
JESD-609 codee3
Lead diameter0.6 mm
Lead length21 mm
Installation featuresTHROUGH HOLE MOUNT
Number of terminals2
Maximum operating temperature155 °C
Minimum operating temperature-55 °C
Package diameter2.5 mm
Package length6.2 mm
Package formAxial
method of packingAMMO PACK
Rated power dissipation(P)0.5 W
Rated temperature70 °C
resistance18000 Ω
Resistor typeFIXED RESISTOR
surface mountNO
technologyMETAL FILM
Temperature Coefficient350 ppm/°C
Terminal surfaceTin (Sn) - hot dipped
Terminal shapeWIRE
Tolerance1%
Operating Voltage350 V
Base Number Matches1
Metal Film Resistors
Welwyn Components
MFR Series
Professional grade approved to
BSCECC 40101-803 and 019
Tolerances down to 0.5%
Temperature coefficient down to 50ppm/°C
Electrical Data
Power rating at 70°C
Resistance range
Limiting element voltage
TCR
Resistance tolerance
watts
ohms
volts
ppm/°C
%
MFR3
0.4
10R - 1M
200
50
1
MFR4
0.5
1R0 - 10M
350
50
0.5, 1,2
MFR5
0.75
1R0 - 1M
350
≤10:150
>10:100*
0.5, 1,2
* Note:- Tighter TCR’S are available on professional grade, consult factory for details.
Approved CECC 40101 - 019 Style
Power rating at 70°C
watts
Resistance range.
ohms
Limiting element voltage
volts
TCR
ppm/°C
Resistance tolerance
%
FZ
FX
0.25
0.25
1 to 1M
1 to 1M
250
250
100
250
5.1 to 9.1 : 200 5.1 to 9.1 : 500
1,2
1,2
BC
0.125
10 to 1M
200
50
0.5, 1, 2
BK
0.125
10 to 1M
200
100
0.5, 1, 2
EZ
0.5
10 to 1M0
350
100
1,2
CC
0.25
10 to 1M
250
50
0.5, 1, 2
EX
0.5
10 to 1M
350
250
1,2
CK
0.25
10 to 1M
250
100
0.5, 1, 2
Approved CECC 40101 - 803 Style
Power rating at 70°C
watts
Resistance range.
ohms
Limiting element voltage
volts
TCR
ppm/°C
Resistance tolerance
%
Standard values
Thermal impedance
Ambient temperature range
Product grades available
E24, E96 preferred
°C/watt
°C
150
commercial
140
-55 to 155
commercial, professional
112
Physical Data
Dimensions (mm) & Weight (g)
Type
MFR3
MFR4
MFR5
Professional
Commercial
Professional
Commercial
Professional
Commercial
L max
3.5
3.7
6.2
6.8
9.0
10.0
D max
1.8
2.0
2.5
3.0
3.6
3.7
F min
22.4
22.4
21.0
21.0
19.6
19.6
d nom
0.5
0.45
0.6
0.55
0.8
0.6
PCB
mount
centres
Min
bend
radius
Wt.
nom
7.6
7.6
10.2
10.2
12.7
12.7
0.5
0.5
0.6
0.6
1.2
0.6
0.1
0.1
0.3
0.3
0.5
0.5
d
D
L
f
General Note
Welwyn Components reserves the right to make changes in product specification without notice or liability.
All information is subject to Welwyn’s own data and is considered accurate at time of going to print.
A subsidiary of
TT electronics plc
Issue D · 05.07
© Welwyn Components Limited
· Bedlington, Northumberland NE22 7AA, UK
Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com
135
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