FC4 WELWYN [Welwyn Components Limited], FC4 Datasheet

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FC4

Manufacturer Part Number
FC4
Description
Fusible Carbon Film Resistors
Manufacturer
WELWYN [Welwyn Components Limited]
Datasheet

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166
Construction
The carbon film is deposited on a high purity ceramic rod.
End caps are fitted and termination wires welded to the caps.
The resistive film is adjusted to the required value by a special
helical cut; finally the flame retardant lacquer protection is
applied to the resistor body and marked with an indelible ink.
Terminations
Material
Strength
Solderability The terminations meet the requirements of
Fusible Carbon
Film Resistors
FC4
Electrical Data
Physical Data
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
Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com
Power rating at 70°C
Resistance range
TCR
Resistance tolerance
Standard values
Thermal impedance
Ambient temperature range
Dimensions (mm) & Weight (g)
Type
FC4
Predictable fusing characteristics
Constant voltage fusing characteristics
Fuses at very low powers
Flame retardant lacquer
L Max
6.2
Solder-coated copper wire.
The terminations meet the requirements of
IEC 68.2.21
IEC 115-1, Clause 4.17.3.2
D Max
2.5
f min
21.0
· Bedlington, Northumberland NE22 7AA, UK
d nom
0.6
mounting
centres
10.2
PCB
radius
bend
ppm/°C
°C/watt
Min.
0.6
watts
ohms
°C
%
Wt.nom
Marking
Resistance value and tolerances are identified in accordance
with IEC62.4 - band colour code. A fifth (yellow) band
denotes that the product is fusible and suitable for use in
constant voltage applications.
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.
0.3
d
D
E24 preferred
-55 to 125
1R0-5K1
Welwyn Components
5, 10
0.33
FC4
300
215
L
f
TT electronics plc
A subsidiary of
Issue B · 03.02

Related parts for FC4

FC4 Summary of contents

Page 1

... 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. Welwyn Components FC4 0.33 1R0-5K1 300 5, 10 E24 preferred 215 ...

Page 2

... Standard Quantities Per Package Type Ammo pack 6 Body location f Welwyn Components Maximum 0.2 0.8 zero at 125°C 0.5 40/125/56 0.25 0.5 0.1 >1G Maximum Fusing Voltage 10 100 1k Resistance value (ohms) FC4 5000 – Issue B · 03.02 167 ...

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