MFR4P Datasheet, PDF (1/2 Pages) Welwyn Components Limited – Metal Film Resistors

Metal Film Resistors
MFR4P Series
• Smallest size for power rating
• ^{Resistance range: 1 ohm to 1M ohms}
• ^{Temperature coefficient down to 50ppm/°C}
Welwyn Components
Electrical Data
Power rating at 70°C
Resistance range
Limiting element voltage
TCR
Resistance tolerance
Standard values
Thermal impedance
Ambient temperature range
*Below 1 ohm 5% preferred
Physical Data
watts
ohms
volts
ppm/°C
%
°C/watt
°C
MFR4P
0.6
0R22 to 1M
250
<1R: 300 >=1R: 50
0.5, 1, 2, 5*
E24 preferred
130
-55 to 155
Dimensions (mm) & Weight (g)
Type
L Max
MFR4P 6.2
D Max
2.5
f min
21.0
d nom
0.6
PCB
mounting
centres
10.2
Min.
bend
radius
0.6
Wt.nom
0.3
d
D
L
f
Construction
The resistance element is a precisely controlled thin film of
metal alloy sputtered on to a high purity ceramic core,
protected by a moisture-resistant, high dielectric strength
coating applied so that terminations remain completely clear.
This permits a well defined body length,
(clean lead to clean lead dimension L).
Marking
Resistors are colour coded with 6 bands. IEC 62 colours are
used.
Solvent Resistance
The body protection and marking are resistant to all normal
industrial cleaning solvents suitable for printed circuits.
Terminations
Material
Solder-coated copper wire.
Strength
The terminations meet the requirements of
IEC 68.2.21
Solderability The terminations meet the requirements of
IEC 115-1, Clause 4.17.3.2
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.
© Welwyn Components Limited · Bedlington, Northumberland NE22 7AA, UK
Telephone: [phone] · Facsimile: [phone] · Email: [e-mail] · Website: www.welwyn-tt.com
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A subsidiary of
TT electronics plc
Issue D · 03.06