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Welwyn Electronics Park Bedlington, Northumberland
Cramlington, England-NE227AA, United Kingdom+(44)-1670-822181
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Fusible Metal Film Resistors

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Electrical Data
Issue B · 03.02
A subsidiary of
TT electronics plc
Welwyn Components
164
Dimensions (mm) & Weight (g)
PCB Min.
mounting bend
Type L max D max f min d nom centres radius Wt. nom
Power rating at 70° C watt 0.25 0.5 1.0
0R1 - 10K 0R1 - 27K 0R2 - 1K5
250 350 350
150 120 100
250
-55 to 155
5
E24 preferred
Resistance range ohms
Limiting element voltage volts
TCR ppm/° C
Resistance tolerance %
Standard values
Thermal impedance ° C/watt
Ambient temperature range ° C

Fusible Metal Film Resistors

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Construction
The metal film is deposited on a high purity ceramic rod. End
caps are force fitted and termination wires welded to the
caps. The resistive film is adjusted to the required value by a
special helical cut; finally the cement protection is applied to
the resistor body and marked with indelible ink.
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 five bands. Four of the bands
are used to indicate value and tolerance, with IEC 62 colours
being used. A fifth yellow band denotes constant voltage
fusibility.
Solvent Resistance
The body protection and marking are resistant to all normal
industrial cleaning solvents suitable for printed circuits.
Flammability
The resistors will not burn or emit incandescent particles
under any condition of applied temperature or power
overload

Fusible Metal Film Resistors

FOB Price : Get Price

Power rating at 70° C watt 0.25 0.5 1.0
0R1 - 10K 0R1 - 27K 0R2 - 1K5
250 350 350
150 120 100
250
-55 to 155
5
E24 preferred
Resistance range ohms
Limiting element voltage volts
TCR ppm/° C
Resistance tolerance %
Standard values
Thermal impedance ° C/watt
Ambient temperature range ° C

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