High Precision Anti Sulfurated Resistors Metal Film 3 Ohm Resistor 1W

Product Specification

 EAM16FT3R00DES: 1206 3Ω(3 Ohm) 1W 1% Anti-Sulfurated Metal Film Resistor

EAM16FT3R00DES is a high-performance Anti-Sulfurated metal film chip resistor designed for demanding applications where reliability under harsh environmental conditions is paramount. This 1206 package resistor combines a 3Ω(3 Ohm) resistance value with a 1W power rating and 1% precision, making it an ideal solution for modern electronic circuits exposed to corrosive elements. With its advanced construction and specialized protective features, this component addresses critical failure mechanisms that affect conventional resistors in sulfurrich environments.

 Technical Specifications and Design Features

The EAM16FT3R00DES belongs to Ellon's EAM series of antisulfuration metal film resistors. The component comes in a standard 1206 package (3.2mm × 1.6mm) that offers an optimal balance between compact size and power handling capability . Despite its relatively small dimensions, the resistor efficiently dissipates 1W of power while maintaining stable operation, thanks to intelligent thermal design that prevents excessive heat buildup.

The resistor provides a precise 3Ω(3 Ohm) resistance value with a tight tolerance of ±1%, ensuring consistent performance in critical circuit applications . This level of precision makes it suitable for functions where accurate resistance values are essential, such as current sensing, voltage division, and precision analog circuits. The component's temperature coefficient of ±50ppm/°C guarantees minimal resistance variation across a wide operating temperature range from 55°C to +155°C , significantly outperforming generalpurpose film resistors that typically exhibit ±100ppm/°C or higher.

 Advanced AntiSulfuration Technology

The cornerstone of the EAM16FT3R00DES's reliability is its exceptional resistance to sulfuration corrosion. In environments containing sulfur gases (such as H₂S and SO₂), ordinary resistors with silver electrodes undergo chemical reactions that form silver sulfide, leading to resistance value drift or complete circuit failure .

Ellon has engineered this resistor with a sophisticated multilayer passivation process that creates a composite protective layer of SiO₂ and epoxy resin on the resistor surface . This barrier effectively blocks sulfur penetration, preserving the integrity of the internal structure and electrical characteristics. According to test data, the resistor's antisulfuration performance complies with the ASTM B80995 standard and demonstrates a lifespan up to three times longer than conventional products in accelerated sulfur exposure tests .

 Environmental Compliance and Safety Certifications

The EAM16FT3R00DES meets stringent international environmental and safety standards, including compliance with RoHS (2011/65/EU) and REACH regulations . The resistor is manufactured with leadfree terminations compatible with 260°C reflow soldering processes, aligning with global environmental protection initiatives while ensuring compatibility with modern assembly techniques.

Additionally, the series has been evaluated against the REACH SVHC list (1907/2006/EC) and confirmed to contain no substances of very high concern, providing further assurance of its environmental safety profile . This comprehensive compliance makes the resistor suitable for international markets with rigorous environmental regulations.

 Special Electrical Characteristics

Beyond its antisulfuration properties, the EAM16FT3R00DES exhibits several beneficial electrical characteristics. The metal film construction inherently provides low inductance performance, which is crucial for highfrequency applications where parasitic inductance can compromise circuit operation.

The resistor's design also addresses surge tolerance, with the capability to withstand significant momentary overloads—a characteristic further enhanced in related models like the EGM16FT3R00DES, which can tolerate 20A/10μs surge currents . While the EAM16FT3R00DES prioritizes sulfuration resistance, its robust construction nevertheless offers improved reliability under transient conditions compared to standard resistors.

 Application Scenarios

The EAM16FT3R00DES excels in multiple demanding application areas:

 Automotive Electronics: Engine control units (ECUs), LED headlight drivers, and onboard chargers where exposure to sulfurcontaining fuel additives and atmospheric pollutants is common . The resistor's stability ensures proper functioning throughout the vehicle's lifespan.

 Industrial Automation: Programmable logic controllers (PLCs), frequency converters, motor drives, and industrial sensor systems that operate in environments with high humidity, pollution, and chemical exposure .

 Outdoor and Communication Equipment: Photovoltaic inverters, base station power supplies, and telecommunications infrastructure that endure atmospheric corrosion, temperature fluctuations, and potential sulfur contamination .

 Chemical Processing Equipment: Measurement and control systems in petroleum refineries, chemical plants, and mining operations where sulfurcontaining compounds are prevalent.

 Manufacturing Excellence and Quality Assurance

Ellon employs advanced manufacturing technologies to ensure the consistent quality and performance of the EAM16FT3R00DES resistor. Laser trimming technology enables precise adjustment of resistance values to achieve the ±1% tolerance . The production process incorporates a fully automated testing system that conducts 100% resistance value verification along with sampling through accelerated sulfur exposure tests . This comprehensive quality control approach guarantees that every unit meets specifications before shipment.

 Comparative Advantage in Market Context

When compared to standard 1206 package resistors with similar 3Ω(3 Ohm) resistance and 1W power rating, the EAM16FT3R00DES commands a justifiable premium due to its specialized protective features. For applications where sulfuration is not a concern, basic metal film resistors such as the TRL120610F3R00P05Z may offer a more costeffective solution . However, in corrosive environments, the extended service life and maintained reliability of the antisulfuration resistor significantly reduce maintenance costs and system failures, providing superior longterm value.

 Conclusion

The EAM16FT3R00DES 1206 3Ω(3 Ohm) 1W 1% Anti-Sulfurated metal film resistor represents a specialized electronic component engineered for reliability in challenging operating conditions. Its combination of precise electrical characteristics, robust environmental protection, and compliance with international standards makes it an optimal choice for design engineers seeking to enhance the durability and longevity of electronic systems exposed to sulfurcontaining atmospheres. As industrial automation, automotive electronics, and outdoor infrastructure continue to advance, specialized components like the EAM16FT3R00DES will play an increasingly critical role in ensuring electronic system reliability across diverse environmental conditions.