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I. Product Overview

The CR0201 Series Current Sensing Resistor is a high-performance thick film chip resistor that plays a crucial role in the miniaturization trend of electronic devices, thanks to its ultra-small size and lightweight design. Specifically engineered for precise current detection scenarios, this product is widely used in entertainment products such as stereos, TV tuners, and tape recorders, as well as computer-related devices like PDAs and communication equipment including mobile phones. It provides reliable current sensing support for the stable operation of various electronic devices.

II. Core Features

  1. Compact Size with Strong Adaptability: Adopting the 0201 package specification, the specific dimensions are length 0.60±0.03mm, width 0.30±0.03mm, height 0.23±0.05mm, and both electrode lengths are 0.15±0.05mm. The ultra-small volume allows it to be easily integrated into high-density circuit boards, meeting the spatial layout requirements of microelectronic devices.
  2. Stable Performance and High Reliability: The operating temperature range covers -55℃ to 155℃, enabling it to adapt to various harsh working environments. The Temperature Coefficient of Resistance (T.C.R.) is -200/+400 PPM/℃, maintaining the stability of resistance value within a wide temperature range and ensuring the accuracy of current detection.
  3. Excellent Electrical Parameters: The rated power is 0.05W (at 70℃), the maximum working voltage is 25V, and the maximum overload voltage is 50V. The resistance range covers 1Ω to 10MΩ for accuracy grades F (±1%), G (±2%), and J (±5%), among which the R<10Ω specification is commonly used for core current sensing, capable of accurately capturing small current changes.
  4. Efficient Assembly and Cost Optimization: Compatible with automatic production processes of placement machines, it can significantly improve assembly efficiency and reduce labor costs. Strict quality control and short delivery cycles meet the requirements of mass production.

III. Key Electrical Specifications

Item Specification
Rated Power (at 70℃) 0.05W
Max Working Voltage 25V
Max Overload Voltage 50V
T.C.R. (PPM/℃) -200/+400
Resistance Range (F/G/J) 1Ω ≤ R < 10Ω; 10Ω ≤ R ≤ 10MΩ
Operating Temperature Range -55℃ ~ 155℃
Jumper Resistance Value Max 50mΩ
Jumper Rated Current 0.5A
Max Overload Current (<1s) 1A
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IV. Reliability Assurance

The CR0201 Series Resistor has passed a number of rigorous reliability tests to ensure stable performance during long-term use:
 
  • Temperature Cycle Test: 5 cycles of -55℃ to 155℃, resistance change rate ≤±5%;
  • Short-Time Overload Test: Apply 2.5 times the rated working voltage or the maximum overload voltage (whichever is smaller) for 5 seconds, resistance change rate ≤±5%;
  • Resistance to Soldering Heat Test: 260±5℃ for 10 seconds, resistance change rate ≤±5%;
  • Damp Heat with Load Test: 40±2℃, 90~95% relative humidity, applying rated voltage for intermittent operation for 1000 hours, resistance change rate ≤±5%;
  • Solvent Resistance: Immerse in isopropyl alcohol at 20~25℃ for 60 seconds, place at room temperature for 48 hours, resistance change rate ≤±5%.

V. Conclusion

With its ultra-small size, precise current detection capability, stable performance, and high reliability, the CR0201 Series Current Sensing Resistor has become the preferred product for current sensing solutions in microelectronic devices. Whether in entertainment equipment, communication terminals, or computer-related products, this series of resistors can rely on its excellent adaptability and performance to provide a solid guarantee for the efficient and stable operation of devices. In the future, the CR0201 Series will continue to uphold high-quality standards, constantly adapt to the upgrading needs of electronic devices, and inject sustained momentum into the miniaturization and high-precision development of the electronic industry.

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