Introduction to the CR2010 series current detection resistors from Tian'er Alloy

The CR2010 series current sensing resistors, as high-performance thick film chip resistors, are ideal for current measurement and control scenarios in electronic devices, thanks to their precise current detection capability, stable electrical performance, and wide adaptability. Designed specifically for applications requiring strict requirements on current sensing accuracy and reliability, this product plays a key role in current sampling and signal conversion in various electronic equipment.

Core Features

1. Precise Current Sensing: The resistance range covers 10mΩ~10MΩ, encompassing low, medium, and high resistance intervals. Among them, low-resistance models (10mΩ≤R<1000mΩ) adopt metal paste (optional code "R"), achieving a precise temperature coefficient (T.C.R.) of 1800PPM/℃~200PPM/℃ depending on the resistance value, ensuring current detection accuracy over a wide temperature range.
2. Stable Power Bearing Capacity: The rated power at 70℃ reaches 0.75W, featuring excellent power tolerance to stably handle power loads during continuous operation. With the power derating curve, it can still maintain reliable operation through reasonable load reduction in high-temperature environments exceeding 70℃.
3. Excellent Environmental Adaptability: The operating temperature range is as wide as -55℃~155℃, enabling adaptation to harsh high and low-temperature working conditions. It has passed rigorous reliability tests such as damp heat with load and rapid temperature change, maintaining stable performance in humid environments with severe temperature fluctuations, and meeting the requirements of various complex scenarios.
4. High-Reliability Design: After multiple reliability tests including short-time overload, resistance to soldering heat, solvent resistance, and bending strength, the resistance change rate is strictly controlled within industry high standards. For jumper models, the maximum resistance change after testing does not exceed 0.1Ω, ensuring long-term stable operation of the product.

Key Electrical Specifications

Application Scenarios

With its balanced performance, the CR2010 series current sensing resistors are widely used in various electronic devices requiring precise current detection:

1. •Power Supply Equipment: Current sampling and overload protection of switching power supplies and power adapters;
2. • Consumer Electronics: Current monitoring of charging circuits in smartphones, tablets, and other devices;
3. • Industrial Control: Current signal acquisition of industrial automation equipment and measuring instruments;
4. • Communication Equipment: Power management modules of base station equipment, routers, and other communication terminals;
5. • Automotive Electronics: Current detection and control circuits in automotive electronic systems (meeting high-temperature working requirements).

Packaging and Soldering Specifications

The product adopts the standard 2010 package size (length 5.00±0.20mm, width 2.50±0.15mm, height 0.55±0.10mm), compatible with automatic placement machines, effectively improving assembly efficiency. Recommended soldering parameters are as follows: wave soldering peak temperature 265℃, single soldering time not exceeding 10 seconds; reflow soldering peak temperature 265℃, preheating time 90~120 seconds, allowing a maximum of 3 reflow cycles; for rework, use hot air equipment and heat at 350℃ for 3~5 seconds. The packaging adopts reel tape packaging, with 4000PCS per 7-inch reel, and 13-inch reels can be customized according to requirements, facilitating storage and automatic production line use.

Conclusion

The CR2010 series current sensing resistors provide an efficient solution for current measurement and control of electronic devices with their precise sensing performance, stable reliability, and wide adaptability. Their strict production standards and comprehensive reliability tests ensure stable operation under various complex working conditions. Whether in consumer electronics, industrial control, or communication equipment, they can meet the high-precision requirements of core circuits for current detection. As a balanced-performance and reliable current sensing component, the CR2010 series will continue to provide strong support for the efficient and stable operation of electronic devices.