■ UL Safe Approved, File NO.E304571
| Rated Power Consumption (W) | Overall size (mm) | I | d | |
| I | D | |||
| 0.25 | 7.0±1 | 2.5±0.5 | 28±2 | 0.6±0.05 |
| 0.5 | 10.5±1 | 3.9±0.5 | ||
| 1 | 14.0±1 | 5.5±0.5 | 0.8±0.05 | |
| 2 | 17.0±1 | 6.5±0.5 | ||
■ Fusible Resistor Technical Parameter
Resistance range: 0.47Ω-1KΩ Resistance precision: ±5%±10% Temperature Coefficient: ±350 x 10 -6/℃ Ambient Temperature: -25~+125℃ Executive Specification: SJ2865-88 | Rated Power Consumption Multiplior ( Muiti ) | Nominal Resistance Value Range (Ω) | ||
| ＜2 | 2-10 | ＞10 | ||
| Fusing Time(S) | ||||
| 12 | - | 60 | 30 | |
| 16 | 60 | 30 | 15 | |
| 25 | 30 | 15 | 7.5 | |
The RF10 coating fusible resistor is a non-flammable metal film fuse resistor with a gray-white coating, designed to function as both a resistor and a fuse. It features a white ring behind the precision color ring for easy identification. This component is UL certified (File No. E304571) and meets ROHS compliance standards.
Package Type: Surface Mount
Material: Wire-wound Resistor
Coating: Gray-white nonflammable coating
Overall Size: 7.0mm to 17.0mm length, 2.5mm to 6.6mm diameter (depending on power rating)
Dual Functionality: Acts as a resistor under normal conditions and fuses to protect circuits during overloads
Excellent Heat Durability: Withstands high temperatures and overload conditions
Low Temperature Coefficient: ±350 ppm/°C ensures stable performance across temperature ranges
Low Noise Operation: Suitable for sensitive electronic circuits
Non-Flammable Construction: Gray-white coating meets UL94 V-0 flame retardant standards
High Overload Power Capability: Can handle significant power surges before fusing
Quick Fusing Response: Protects circuits within specified time frames during abnormal conditions
Color televisions and display systems
Lighting fixtures and LED drivers
Switching power supplies and power converters
Consumer electronics and home appliances
Industrial control systems
Circuit protection in various electronic devices
UL Certification: File No. E304571
Quality Certification: ISO9001:2008
Environmental Certificate: ISO14000
Safety Certificate: CQC 03003095~3097
Executive Specification: SJ2865-88
ROHS Compliant: Yes
The RF10 series Fusible Resistor provides reliable circuit protection by fusing within specified time limits when subjected to overload conditions. The fusing time varies based on the overload multiplier and resistance value, ensuring appropriate protection for different circuit configurations. The component maintains stable resistance values under normal operating conditions while providing fail-safe protection during faults.
Difference between A Fuse And A Fusible Resistor
A fusible resistor acts as a safety fuse, but there is a difference between a fuse and a fusible resistor.
A normal glass tube fuse used where high surge current load devices used like 2A, 8A, 10A, etc and this will burn when high load occurs according to fuse capacity or when short connection.
The fusible resistor used in the circuit operates high voltage with small or lower currents such as 100ma, 250ma. A fusible resistor can pass the pulse of a high volt like 500v without failure, but it must fuse quickly without flames when 100v short circuit overloads.
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No. 6, Xinxin Intelligent Industrial Park，Changzhou, Jiangsu
Changzhou Southern Electronic Element Factory Co., Ltd. is located in the city of Changzhou, which has a long history in Jiangsu Province. It is situated in the most active economic area in Yangtze River Delta Centre. The transport is very convenient. Expressway, Fast railways run though it. And it only takes one and half hours to reach Shanghai or Nanjing city. Airplane from here is through to major cities in China.
Changzhou Southern Electronic Element Factory Co., Ltd. was founded in 1989. After several years' development and effort, it has invested and opened up three subsidiary companies, in Yancheng city, Huai'an city in Jiangsu Province, and Lang'xi City in Anhui Province respectively.
