Welwyn Components Predictable fusing characteristics Constant vol
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Fusible Carbon Film Resistors
Welwyn Components
Predictable fusing characteristics Constant voltage fusing characteristics Fuses very powers Flame retardant lacquer
Electrical Data
Power rating 70°C Resistance range Resistance tolerance Standard values Thermal impedance Ambient temperature range °C/watt watts ohms ppm/°C 0.33 1R0-5K1 preferred
Physical Data
Dimensions (mm) Weight mounting centres 10.2 Min. bend radius
Type
21.0
Wt.nom
Construction
carbon film deposited high purity ceramic rod. caps fitted termination wires welded caps. resistive film adjusted required value special helical cut; finally flame retardant lacquer protection applied resistor body marked with indelible ink.
Marking
Resistance value tolerances identified accordance with IEC62.4 band colour code. fifth (yellow) band denotes that product fusible suitable constant voltage applications.
Solvent Resistance Terminations
Material Strength Solder-coated copper wire. terminations meet requirements 68.2.21 body protection marking resistant normal industrial cleaning solvents suitable printed circuits.
Flammability
resistor coating will burn emit incandescent particles under condition applied temperature power overload.
Solderability terminations meet requirements 115-1, Clause 4.17.3.2
General Note
Welwyn Components reserves right make changes product specification without notice liability. information subject Welwyn's data considered accurate time going print. subsidiary electronics Issue 03.02
Welwyn Components Limited Bedlington, Northumberland NE22 7AA,
Telephone: 1670 822181 Facsimile: 1670 829465 Email: info@welwyn-tt.com Website: www.welwyn-tt.com
Fusible Carbon Film Resistor
Welwyn Components
Performance Data
Maximum Load 1000 70°C Derating from rated power 70°C Climatic Climatic category Temperature rapid change Resistance solder heat Vibration bump Isolation resistance ohms 5.1k zero 125°C 40/125/56 0.25
Graph
Fusing Characteristics (constant voltage)
Graph GRAPH
Maximum permissable applied voltage
Maximum Fusing Voltage MAXIMUM FUSING VOLTAGE
GRAPH FUSING CHARACTERISTICS (constant voltage)
Fusing time (seconds)
Applied power (watts)
Resistance value (ohms)
Packaging
resistors supplied tape packed ready loading automatic sequencing insertion machines. Component wires will protrude beyond outside edge tapes. Lead formed resistors also supplied. Standard options Lancet, Radial Goalpost forming shown Lead Form Information section. Alternative packaging available request.
Standard Quantities Package
Type Ammo pack 5000
Body location
Welwyn Components Limited Bedlington, Northumberland NE22 7AA, Telephone: 1670 822181 Facsimile: 1670 829465 Email: info@welwyn-tt.com Website: www.welwyn-tt.com
Issue 03.02
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