EMA25F3W0R470KDG
The 2512 0.47Ω (470m Ohm) 3W Metal Chip Resistor
Precision and Power in Current Sensing
In modern electronics where efficiency and accuracy are paramount, the 2512 0.47Ω (470m Ohm) 3W metal chip resistor serves as an engineering cornerstone. This high-power, high-precision component delivers reliable performance under demanding conditions with its ultra-low resistance value, substantial 3W power rating, and superior construction.
Technical Specifications
| Parameter | Specification |
| Resistance Value | 0.47Ω (470mΩ) |
| Tolerance | ±1% |
| Power Rating | 3W |
| Package Size | 2512 |
| Temperature Coefficient (TCR) | ±50 ppm/°C |
| Resistance Material | Manganese Copper (KARMA) alloy |
| Operating Temperature | -55°C to +170°C |
Key Features
- 2512 Package Size: 3.9mm * 2.0mm dimensions enable efficient heat dissipation for the 3W power rating
- 0.47Ω (470m Ohm): Ultra-low resistance minimizes voltage drop for accurate current measurement
- 5W Power Rating: Suitable for high-current paths in power supplies, motor drives, and battery systems
- 1% Tolerance: Ensures consistent and accurate current measurement across all units
Critical Role of Ultra-Low EMA (0.47m Ohm)
The 0.47Ω (470m Ohm) ESR minimizes power loss (P = I²R) and reduces heat generation with high currents. This efficiency makes it ideal for maximizing battery life in electric vehicles and improving power conversion systems.
Superior Material and Construction
Manganese-Copper (MnCu) alloy provides:
- Low Temperature Coefficient of Resistance (TCR) for stable performance across temperature ranges
- Excellent long-term stability against oxidation and degradation
- Minimal thermoelectric EMF when connected to copper PCB traces
Enhanced Performance Features
- Low Inductance Design: Optimized for high-frequency applications without signal distortion
- High Surge Current Capability: Withstands transient overloads for rugged system performance
Application Areas
- Automotive Electronics: EV battery packs, motor controllers, onboard chargers
- Industrial Automation: PLC I/O modules, servo drives, power inverters
- Telecommunications & Server Power Supplies: High-efficiency converters
- Solar Inverters and Energy Storage Systems: Charge/discharge monitoring
Compliance and Environmental Responsibility
Fully compliant with RoHS and REACH regulations, constructed with lead-free materials to meet global environmental standards.
Conclusion
The 2512 0.47Ω (470m Ohm) 3W metal shunt chip resistor combines ultra-low resistance with robust power dissipation, 1% tolerance, and exceptional stability. Its low inductance and high surge resilience make it ideal for demanding current sensing applications in automotive, industrial, and renewable energy sectors.
