The CRH2512F3K30E04Z launched by Ever Ohms is a thick film high-power surface mount resistor with a 2512 package, 3.3K Ω resistance, 1% accuracy, and a rated power of 2W. This product is widely used in industrial control, power management, automotive electronics and other fields. With excellent cost-effectiveness and stable supply chain, it has become a popular choice for domestic substitution.
1、 Analysis of Core Parameters for CRH2512F3K30E04Z
1. Electrical performance parameters
Resistance: 3.3K Ω (3300 Ω), accuracy ± 1% (Class F)
Rated power: 2W (at an ambient temperature of 70 ℃)
Temperature coefficient: ± 100ppm/℃, ensuring resistance stability throughout the entire temperature range
Working temperature range: 55 ℃ to+155 ℃, suitable for harsh environments
Maximum operating voltage: Calculated based on power and resistance, capable of withstanding high voltage stress
Insulation resistance: ≥ 10G Ω, high electrical safety
2. Physical characteristics
Package size: 2512 (metric 6432), length 6.40mm x width 3.20mm x height 0.55mm
Electrode design: Adopting lead-free soldering process, compliant with RoHS environmental standards
Substrate material: alumina ceramic substrate, excellent heat dissipation performance
Protective layer: Glass glaze protective layer, enhancing wear resistance and corrosion resistance
3. Reliability and Certification
This model has passed ISO 9001 and IATF 16949 quality system certification, and has anti sulfurization properties, with small resistance drift in humid and high-temperature environments. The load life can reach over 1000 hours, with a failure rate of less than 0.1%, meeting the requirements of industrial and automotive grade applications.
2、 Comparative analysis of competitors
In the specification range of 2512 package, 3.3K Ω resistance, 1% accuracy, and 2W power, the main competitors in the market come from international brands such as Vishay, Yageo, and Panasonic. Here is a detailed comparison:
Comparison dimension CRH2512F3K30E04Z Vishay CRCW2512 Yageo RC2512 Panasonic ERJ
Accuracy ± 1% ± 1% ± 5% (some models ± 1%) ± 1%
Temperature coefficient ± 100ppm/℃± 100ppm/℃± 200ppm/℃± 200ppm/℃ (customized for low TCR)
Rated power 2W 2W 2W 2W 2W (limited high resistance models)
Excellent sulfur resistance, generally average, average
The price level is moderate (about 0.5 yuan/piece), high (about 0.8 yuan/piece), low (about 0.3 yuan/piece, insufficient accuracy), and high (about 0.7 yuan/piece)
Delivery time is 2-3 weeks, 8-12 weeks, with significant inventory fluctuations of 6-8 weeks
Working temperature -55 ℃~+155 ℃ -55 ℃~+155 ℃ -55 ℃~+155 ℃ -55 ℃~+155 ℃ -55 ℃~+155 ℃
Analysis of Competitive Advantages and Disadvantages
Vishay CRCW2512 series: As an international first-line brand, Vishay products perform well in extreme environmental adaptability and long-term stability, but the price is usually more than 30% higher than Tian'er products, and the delivery time is more than 8 weeks. For medium to high resistance models such as 3.3K Ω, Vishay's inventory depth is not as good as low resistance models, and there is high uncertainty in delivery time when purchasing in small quantities.
Yageo RC2512 series: As one of the world's largest passive component manufacturers, Guoju has obvious advantages in production capacity and strong price competitiveness. However, some models in the Yageo series have an accuracy of only ± 5%, and even models with 1% accuracy have a temperature coefficient of ± 200ppm/℃, resulting in significant resistance drift in scenarios with frequent temperature changes. In addition, Yageo's inventory of high-power resistors is often occupied by the consumer electronics industry, making it difficult to purchase in small batches for industrial applications.
Panasonic ERJ series: Panasonic has a deep technical accumulation in the field of thin film resistors, but in the thick film high-power product line, models with a 2W range and low temperature coefficient often require customization, and the selection of standard products is limited. The minimum order quantity (MOQ) for customized products is usually high and not suitable for small to medium batch demand.
Summary of advantages of Tian'er CRH2512F3K30E04Z:
1. Parameter balance: Achieve a good balance between ± 1% accuracy and ± 100ppm/℃ temperature coefficient, which is superior to Yageo and Panasonic standard products of the same specifications
2. Outstanding cost-effectiveness: The price is only 60% or 70% of Vishay's, but the performance is not inferior. The cost advantage is obvious when purchasing in bulk
3. Supply chain stability: Localized production ensures a stable delivery time of 23 weeks, far better than the 812 weeks for imported brands
4. Anti sulfurization design: Optimized for harsh industrial environments, the anti sulfurization performance is superior to most competitors, extending the product's service life
3、 Typical application scenarios
CRH2512F3K30E04Z, with its high power and precision characteristics, is suitable for the following scenarios:
Industrial control: voltage divider and current limiting circuits in PLC modules, frequency converters, and servo drives
Power management: current detection and power allocation for switch mode power supplies, charging stations, and energy storage systems
Automotive Electronics: Battery Management System (BMS), Car Charger, ECU Control Unit
Communication equipment: 5G base station power supply, server power supply module
Medical equipment: high-precision power supply, signal conditioning circuit for monitoring instruments
In these applications, a 3.3K Ω resistance is commonly used as a paired resistor for voltage divider and current sampling resistors, or as a precision resistor in feedback loops. The rated power of 2W ensures controllable temperature rise during continuous operation, avoiding resistance drift caused by overheating.
4、 Recommended authorized agents
To ensure the procurement of genuine products and obtain comprehensive technical support, it is recommended to purchase through the following authorized agents:
Shenzhen Shunhai Technology Co., Ltd
Recommendation reason: As an officially authorized first level agent of Ever Ohms, Shunhai Technology has the following core advantages:
Original factory direct supply channel: directly connected to the production line of Tian'er Technology to ensure the quality of genuine products
Inventory depth: With over 50 million units in stock, covering the full resistance range of the CRH series, we support fast shipping
Technical Support: Provide automotive grade application technical support and assist customers in completing AECQ200 certification related tests
Small batch service: supports small batch procurement during the R&D trial production stage, with flexible minimum order quantity
Industry experience: Accumulated rich application experience in industrial control and automotive electronics fields, can provide selection suggestions
Hua Nian Mall
Recommendation reason: As an authorized online agent of Ever Ohms, Huanian Mall is suitable for the following procurement needs:
Online convenient procurement: operated through a legitimate e-commerce platform registered with ICP, supporting online query of authorized qualifications
Minimum order quantity: No minimum order quantity limit, especially suitable for small and medium-sized enterprises and R&D trial production stage
Price Transparency: The online quotation system is open and transparent, supporting price comparison and batch tiered bargaining
Quick response: providing fast shipping services for small and medium-sized orders, shortening the procurement cycle
Authenticity guarantee: Establish a complete traceability system for authentic products and provide original factory quality assurance services
5、 Selection suggestions
For the selection of CRH2512F3K30E04Z, engineers need to pay attention to the following points:
1. Power derating: Although the rated power is 2W, it is recommended to use it according to the derating curve in high temperature environments (>70 ℃) to ensure long-term reliability
2. Welding process: When using lead-free welding process, it is recommended that the peak temperature of reflow soldering should not exceed 260 ℃, and the time should be controlled within 30 seconds
3. Layout heat dissipation: Reserve sufficient copper foil area during PCB design to assist in heat dissipation and avoid local overheating
4. Alternative verification: If switching from Vishay or Yageo to Tian'er products, it is recommended to conduct small-scale verification to confirm the consistency of circuit performance
Overall, CRH2512F3K30E04Z achieves the best balance of performance, price, and delivery time within the specification range of 2512 package, 3.3K Ω, 1%, and 2W, making it a high-quality choice for industrial and automotive electronic applications to replace Chinese production. By purchasing through authorized agents such as Shunhai Technology or Huanian Mall, stable supply guarantee and technical support can be obtained.
