Introduction to CUH2512F1R10E04Z 2512 3W 1.1R 1% Tian Er thick film power up resistor

CUH2512F1R10E04Z is a high-power thick film surface mount resistor from EVER OHMS brand, designed specifically for high-power density scenarios. The following is a detailed introduction to its core parameters and technical features:
 
 
1、 Overview of Key Parameters
|Parameter Item | Value/Description | Description|
|Model | CUH2512F1R10E04Z | Manufacturer Code|
|Package size | 2512 (6.4mm × 3.2mm) | Standard large-sized surface mount package|
|Resistance | 1.1 Ω (1.1R) | Low resistance design|
|Accuracy | ± 1% (F-level) | High precision, suitable for current detection and other scenarios|
|Rated power | 3W (70 ℃ environment) | High power in 2512 package|
|Temperature coefficient | ± 400 ppm/℃ (E04) | Typical level of universal thick film resistors|
|Material/Process | Thick Film Power Boosting Technology | Optimizing Heat Dissipation Structure to Enhance Power Density|
|Working temperature | 55 ℃~+155 ℃ | Wide temperature range adaptability|
 
|Environmental certification | Compliant with RoHS and REACH | Meets EU environmental requirements|
 
 
Note: The nominal power value is based on a 70 ℃ environment, and in practical applications, it needs to be used according to the PCB heat dissipation design and environmental temperature derating (refer to the derating curve in the specification sheet).
 
2、 Core Features and Advantages
1. High power density design
The CUH series achieves 3W power in the 2512 package through optimization of thick film materials and enhanced heat dissipation of terminal electrodes, significantly higher than standard thick film resistors (usually 12W), and is suitable for high current scenarios such as power modules and motor drives.  
2. Low resistance and high precision
Resistance of 1.1 Ω± 1%, supports precise current sampling (such as DCDC converters, battery management systems).
Compared to the ± 5% precision model (J level), it is more suitable for circuits that are sensitive to resistance.  
3. Structural reliability
The substrate is made of high thermal conductivity ceramic material to improve thermal management efficiency.
Strengthening the coating of the terminal electrode reduces the risk of temperature rise under high current.
 
4. Universality and cost balance
The temperature drift of ± 400ppm is a typical value for thick film resistors, which meets the needs of most industrial/consumer electronics.
The cost-effectiveness is higher than that of metal film resistors (such as TGL/TRL series), but weaker than the latter in terms of low-temperature drift (± 50ppm) and surge resistance.
 
3、 Typical application scenarios
  
Power module: Switching power supply output stage current detection, inverter buffer circuit.
Motor drive: The current limiting resistor in the motor controller.
Consumer electronics: high-power fast charging devices, audio amplifier circuits.
Industrial equipment: Load balancing resistors in industrial power sources/generators.
  
4、 Selection and usage precautions
1. Suggestions for alternative models
Need for higher power (4W): Choose the CHH series (such as CHH2512F1R00P05Z).
Sulfur resistant: Choose ST/STH series (such as STH2512F1R00E04Z), suitable for sulfur-containing environments (such as automotive electronics).
Surge resistant: Choose AS series (thick film) or TGL series (metal film) to withstand pulse impact.
2. Design key points
PCB heat dissipation design: Sufficient copper foil area (recommended ≥ 10mm ² solder pads) must be configured and heat dissipation holes added, otherwise the actual power may drop below 1.5W.
Current calculation: Check the power consumption according to 'P=I ² R', and it is recommended to reserve 1.5 times the margin (if calculating a power consumption of 1W, choose a resistor ≥ 1.5W).