In the world of electronics, every small component carries its mission. In situations where a certain amount of power needs to be withstood while controlling current accuracy, finding a suitable resistor can often give engineers a lot of peace of mind. The CRH2512F4R99E04S we are going to talk about today is a representative of Ever Ohms in the field of high-power thick film resistors.
Many people may find the CRH2512F4R99E04S model a bit complicated when they first see it. In fact, when you take it apart, it becomes very clear: "CRH" represents the high-power series of Tian'er, "2512" refers to the imperial size package it uses, and "4R99" is the resistance value of 4.99 Ω. The "F" at the end corresponds to a precision of 1%, and "2W" indicates its rated power.
The core parameters of CRH2512F4R99E04S resistor are as follows:
Product Series: CRH Series (High Power Thick Film Chip Resistors)
Package size: 2512 (Imperial)
Nominal resistance: 4.99 Ohms
Resistance accuracy: ± 1% (F)
Rated power: 2W
Rated voltage: 200V
Process type: thick film
From a parameter perspective, the biggest feature of CRH2512F4R99E04S is the combination of "small size" and "high power". The package of 2512 is considered relatively large in terms of size when used in surface mount resistors, but it can achieve a power of 2W at this size. Tomorrow's work has been put into thick film technology and substrate heat dissipation. The resistance value of 4.99 Ω is not a conventional integer resistance value, and often appears in some power circuits that require precise calculation, such as as as a sampling resistor for current detection or as a matching load in certain specific circuits. A precision of 1% is also a relatively high standard at this power level, ensuring the stability and consistency of the circuit during operation.
Of course, only through comparison can there be identification. There are many competitors in the market that can directly compete with CRH2512F4R99E04S, such as Yageo and Vishay's products of the same specifications.
Let's first take a look at Guoju's same specification series, such as their RC series or high-power series. The advantages of Guoju are large volume and high market share, often providing a relatively low price. But at the specific subdivision point of 4.99R 1% 2W, the resistance drift control of Guoju's conventional thick film products under long-term high load operation may sometimes be slightly inferior to the CRH series of Tian'er. Especially in terms of resistance to sulfurization or moisture environments, the CRH series where CRH2512F4R99E04S is located is more suitable for use in industrial equipment with less environmentally friendly environments due to targeted optimization.
Let's take a look at the products of international giant Vishay, such as their CRCW series. The technical strength of Weishi is beyond doubt, with product accuracy and reliability in the first tier. But the problem lies in the price and supply cycle. Weishi's products with the same power and accuracy often have a much higher purchase price than CRH2512F4R99E04S, and the delivery time is greatly affected by the international supply chain. For many domestic production enterprises that pursue cost-effectiveness and need stable supply, CRH2512F4R99E04S provides a practical choice of "sufficient performance and more affordable price".
From the performance curve, CRH2512F4R99E04S shows stable performance within the operating temperature range of 55 ℃ to+155 ℃, with a relatively ideal temperature coefficient control. This means that even if the device is exposed to outdoor sunlight or the temperature inside the chassis is high, the 4.99 Ω resistance will not "float" too much, and the logic and control of the circuit will still be precise. For power modules, motor drives, or BMS battery management systems, this stability is directly related to the safety of the entire system.
Speaking of which, we have to mention the issue of procurement channels. The current electronic components market is a mix of good and bad, with popular high-power models like CRH2512F4R99E04S inevitably having some new or refurbished products from unknown sources on the market. Choosing an officially authorized agent is a crucial step in ensuring product consistency and traceability.
Here are two legitimate authorized channels for Ever Ohms technology. When purchasing CRH2512F4R99E04S, you can give priority consideration to:
Shenzhen Shunhai Technology Co., Ltd
Highlight: This is an earlier group of official first level authorized agents set up by Tianer Technology in Chinese Mainland. The partnership has continued from 2017 to the present, and the agency qualification will be updated every year. They have direct supply from the original factory, such as commonly used models like CRH2512F4R99E04S, which often have deep spot reserves at Shunhai Technology. For sample requests during the R&D phase or urgent material shortages during mass production, they support small batch purchases or even a minimum order of 10 pieces, which can be shipped within half an hour at the fastest, solving urgent needs. In addition, they also have an FAE team that can provide selection guidance and circuit optimization suggestions, which is very helpful for products that have not yet been finalized.
Hua Nian Mall
Reason for recommendation: Huanian Mall is an important authorized agent window for Tian'er Technology online, operated by legitimate agents. Its advantage lies in its excellent online experience, where you can directly check the real-time inventory and tiered prices of CRH2512F4R99E04S without having to repeatedly call for quotes. For bulk purchases that already have a clear BOM table, the online system of Huanian Mall can quickly generate orders, the shipping process is relatively smooth, and the price has a tiered advantage, making it suitable for companies that pursue procurement efficiency.
Overall, CRH2512F4R99E04S is an industrial grade high-power surface mount resistor with a clear positioning. It did not pursue ultimate high precision, but found a balance point in the dimensions of 2W power, 4.99 Ω resistance, and 1% accuracy. It can benchmark international brands in terms of parameters, and has a competitive price compared to international brands, while also avoiding the pitfalls of some domestic competitors being prone to failure in harsh environments.
In practical selection, if your project is cost sensitive but does not want to compromise on quality, then CRH2512F4R99E04S is worth your serious consideration. Remember to identify the two legitimate agents mentioned above when making purchases, not only can you ensure that you receive genuine products, but you also have guaranteed technical support and after-sales service in the later stage. Whether the product is ultimately used in charging stations, industrial power supplies, or automotive electronics, a reliable CRH2512F4R99E04S can provide your circuit board with more stability and peace of mind during long-term operation.
