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

Flameproof Power
Metal Film Resistors
MFP Series
• ^{Smallest size for power rating}
• ^{Resistance range 0.1 ohms to 1M ohms}
• ^{Flameproof protection}
Welwyn Components
Electrical Data
Power rating at 70°C
Resistance range
Limiting element voltage
TCR
Resistance tolerance
Standard values
Thermal impedance
Ambient temperature range
watts
ohms
volts
ppm/°C
%
°C/watt
°C
MFP1
MFP2
<1 Ω: 0.7 >=1 Ω: 1.0
2
0R1 – 1M
1R0 – 1M
350
< 1 Ω: 300 1 Ω - 9.1 Ω: 200 ≥10 Ω: 50
100
1, 2, 5
E24 preferred
120
82
-55 to 155
Physical Data
Dimensions (mm) & Weight (g)
Type
MFP1
MFP2
L Max
6.2
10.0
D Max
2.5
4.0
f min
21.0
27.0
d nom
0.6
0.8
PCB
mounting
centres
10.2
18.4
Min.
bend
radius
0.6
1.2
Wt.nom
0.3
0.55
dD
L
f
Construction
The resistance element is a precisely controlled thin film of
metal alloy on a high purity ceramic core, protected by a
cement coating applied so that terminations remain
completely clear. This permits a well defined body length
(clean lead to clean lead dimension L).
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
Marking
Resistors are colour coded with 4 or 5 bands depending on
value and tolerance. IEC 62 colours are used.
Solvent Resistance
The body protection and marking are resistant to all normal
industrial cleaning solvents suitable for printed circuits.
Flammability
The resistor coating will not burn or emit incandescent
particles under any condition of applied temperature or
power overload.
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
A subsidiary of
TT electronics plc
Issue D · 03.06
143