1WS Small Size Flameproof Fusible Resistor with 300 ppm/°C Resistance Temp. Coeff. and UL1412 Approval
Features
- High power, Small body size.
- It is suitable for protecting circuit boards.
- Noncombustible insulating coating; Solvent proof and resistant to high temperature.
- Low temperature coefficient.
- Uniform in fusing time.
- UL1412 approved.
Product Positioning and Core Use
The FKN-S 1WS is a small size flameproof fusible wirewound resistor designed to combine resistance functionality with a fusible protection function. It is suitable for circuit board protection applications where a compact resistor with defined fusing characteristics is required.
The resistor uses a noncombustible insulating coating with solvent-resistant and high-temperature-resistant characteristics. It provides a 300 ppm/°C resistance temperature coefficient and defined fusing test conditions for circuit designs that require specified electrical and protection characteristics.
As a 1WS fusible resistor, the FKN-S is suitable for electronic circuits requiring a compact flameproof wirewound resistor. Its small body size supports space-conscious circuit board designs while retaining the resistance and fusible functions of the component.
Product Specifications
| Parameter | FKN-S 1WS |
|---|---|
| Product Type | Fusible Wire Wound Resistor, Flameproof |
| Rated Wattage | 1WS |
| Resistance Range | 0.1–200 Ω |
| Resistance Tolerance | ±2% / ±5% |
| Resistance Temperature Coefficient | 300 ppm/°C |
| Dielectric Withstanding Voltage | 250V |
| Insulation Resistance | 1,000 MΩ min. |
| Fusing Time | Within 60 seconds |
| Fusing Test Condition | 16 times rated wattage for 5 minutes |
| Temperature Test Range | −55°C to +200°C |
| Approval | UL1412 |
The specifications above are based on the product's Electrical and Mechanical Performance, Environmental Characteristics, Fusing Characteristics, and How to Order information.
The key quantitative specifications for technical content are 300 ppm/°C temperature coefficient, fusing time within 60 seconds, and minimum 1,000 MΩ insulation resistance. These values provide measurable technical references without introducing unsupported performance improvement claims.
Applications
Circuit Board Protection
The FKN-S 1WS is suitable for circuit board protection applications where a fusible resistor is required. The product documentation specifically identifies circuit board protection as an intended application, making it suitable for protection-related positions on electronic PCBs.
Electronic Circuit Protection
The FKN-S 1WS can be used in electronic circuits that require the combined functions of resistance and fusible protection. Its specified fusing time within 60 seconds provides a defined parameter for engineers evaluating the component's fusing response under the specified test condition.
Compact Flameproof Resistor Applications
For electronic circuits with limited component space and requirements for a flameproof insulating structure, the FKN-S 1WS provides a small body size and noncombustible insulating coating. The coating is also specified as solvent proof and resistant to high temperature, providing relevant material and construction information for component selection.
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