一、Product Overview
The ETR2010 series thin film precision chip resistor is a high-performance electronic component designed based on advanced NiCr thin film technology. Adhering to the EIA standard 2010 package size, it integrates excellent precision, stable temperature characteristics, and reliable environmental adaptability. This product is specifically engineered to meet the stringent requirements of high-precision current sensing applications in various electronic systems, providing accurate and consistent resistance performance for electronic devices such as industrial control equipment, communication devices, and precision measuring instruments.
二、Core Performance Parameters
（一）Electrical Performance
- Power Rating: 1/4 (0.25) W at 70°C, with derating required for operation above 70°C in accordance with the power derating curve.
- Voltage Specifications: Maximum working voltage of 150V, maximum overload voltage of 300V (the lower value between the specified maximum overload voltage and 2×√(Power rating × Resistance) shall prevail).
- Resistance Range: 1.0 Ω ~ 3M Ω, covering a wide range of resistance values to meet diverse application needs.
- Resistance Tolerance: Offers multiple precision grades including ±0.01% (T), ±0.05% (A), ±0.1% (B), ±0.25% (C), ±0.5% (D), ±1% (F), ensuring high-precision current sensing.
- Temperature Coefficient (TCR): Provides various options such as ±2 ppm/°C (X), ±3 ppm/°C (O), ±5 ppm/°C (S), ±10 ppm/°C (B), ±15 ppm/°C (N), ±25 ppm/°C (C), ±50 ppm/°C (D), maintaining stable resistance performance across temperature fluctuations.
- Noise Characteristics: Features low noise performance, with noise levels as low as -90dB to -100dB depending on the resistance value, minimizing interference to the system.
（二）Physical and Packaging Characteristics
- Dimensions (mm): Length (L) 4.90 ± 0.15, Width (W) 2.40 ± 0.15, Height (H) 0.55 ± 0.10, Terminal Thickness (T) 0.60 ± 0.30, Terminal Width (t) 0.50 ± 0.25.
- Packaging: Available in tape and reel packaging (plastic carrier tape, width 12mm) with standard reel quantities of 4000 pieces, facilitating automated SMT assembly.
- Termination Finish: Pb-free 100% Sn finish with Ni barrier layer, ensuring excellent solderability and corrosion resistance, compliant with RoHS standards.
（三）Environmental and Reliability Characteristics
- Operating Temperature Range: -55°C ~ +155°C, suitable for harsh temperature environments.
- Insulation Resistance: >10GΩ (tested at 100Vdc for 1 minute), ensuring good insulation performance.
- Dielectric Withstanding Voltage: Complies with relevant standards, with typical values meeting application requirements, tested according to MIL-STD-202F Method 301.
- Reliability Tests: Passes various strict reliability tests including short-time overload, thermal shock, load life, humidity resistance, and dry heat resistance. For example, the resistance change (∆R) is within ±0.05% for tolerance <0.05% and ±0.2% for tolerance >0.05% in short-time overload tests; shows excellent stability in 1000-hour load life tests.
三、Application Scenarios
The ETR2010 series, with its high precision, low noise, and stable temperature characteristics, is widely used in current sensing circuits of various electronic products. Typical applications include:
- Industrial control systems: Used for current detection in frequency converters, servo drives, and programmable logic controllers (PLCs) to ensure precise control of equipment.
- Communication equipment: Applied in base stations, routers, and optical transceivers for current monitoring, maintaining stable operation of communication systems.
- Precision measuring instruments: Utilized in multimeters, oscilloscopes, and current sensors to improve measurement accuracy.
- Automotive electronics: Suitable for current sensing in automotive electronic control units (ECUs), battery management systems (BMS), and other components (compliant with relevant automotive-grade environmental requirements).
- Consumer electronics: Used in high-end power supplies, audio equipment, and wearable devices to enhance product performance and stability.
四、Conclusion
As a high-performance thin film precision chip resistor, the ETR2010 series stands out in the field of current sensing with its excellent electrical performance, reliable environmental adaptability, and convenient packaging form. It not only meets the high-precision and high-stability requirements of modern electronic systems but also complies with environmental protection standards, providing strong support for the upgrading and development of electronic products in various industries. Whether in industrial control, communication, measurement, or automotive electronics fields, the ETR2010 series is a trusted choice for engineers seeking high-quality current sensing solutions.
