Detailed explanation of CRH2512J39R0E04Z resistor parameters: 2512 package 39R 2W thick film resistor comprehensive introduction
In electronic circuit design, the selection of surface mount resistors directly affects the stability and reliability of the entire circuit. Today we are going to introduce a high-power thick film surface mount resistor from EVER OHMS - CRH2512J39R0E04Z. This resistor has a wide range of applications in power management, automotive electronics, industrial control, and other fields due to its combination of 2512 package, 39R resistance, and 2W power.
Core parameter interpretation: CRH2512J39R0E04Z specification details
The model code CRH2512J39R0E04Z itself contains rich product information. Let's interpret paragraph by paragraph: CRH represents the high-power thick film resistor series of Tian'er Technology; 2512 represents the packaging size, which is imperial 2512 (metric 6432, length 6.35mm, width 3.2mm); J represents a resistance accuracy of ± 5%; 39R0 represents a resistance of 39 Ω (39R is 39 Ω); E04Z is the manufacturer's internal code, usually related to packaging form and production batch.
List of core parameters:
Resistance: 39 Ω (39R)
Accuracy: ± 5% (J-grade)
Power: 2W
Package: 2512
Working voltage: 200V
Temperature coefficient: ± 100ppm/℃
Working temperature range: 55 ℃~+155 ℃
Product Series: Tianer Technology CRH Series High Power Thick Film Chip Resistors
Advantages of 2W power in 2512 package
When it comes to the most prominent feature of CRH2512J39R0E04Z, it achieves a rated power of 2W in the 2512 package size. The power of a conventional 2512 chip resistor is usually 1W or 0.75W, while the CRH series has increased the power to 2W by optimizing the thick film resistor paste formula and heat dissipation design.
What does this mean? Simply put, the same package size can withstand greater current and power consumption, or have better thermal redundancy in high-power applications. This feature is very practical for PCB designs that are limited in space but require handling high power. Calculated with a resistance of 39 Ω, the rated current corresponding to 2W power is approximately 226mA, the maximum withstand voltage is approximately 8.8V, and with a maximum operating voltage of 200V, sufficient safety margin is left.
Typical application scenarios of 39R resistance
39 Ω belongs to the low to medium resistance range in circuits, and typical applications of CRH2512J39R0E04Z include:
Power circuit: used as a current detection resistor for switching power supplies, or as a feedback resistor in DCDC converters. With a resistance of 39 Ω and a power of 2W, it can detect currents in the range of several amperes.
LED driver: In LED constant current driving circuits, 39 Ω is often used as a sampling resistor for setting the current. A precision of ± 5% is sufficient for most LED lighting applications, while a power margin of 2W ensures reliability for long-term operation.
Amplifier output: The output terminal of an audio amplifier is commonly composed of a 39 Ω resistor and a capacitor to form a Rubel network, which is used to offset the inductance of the speaker load and prevent high-frequency oscillation. At this point, the resistor needs to withstand a certain amount of transient power, and a specification of 2W can well meet the requirements.
Reliability and environmental adaptability
The working temperature range of CRH2512J39R0E04Z covers 55 ℃ to+155 ℃, and can adapt to various working environments from severe cold to high temperature. The temperature coefficient of ± 100ppm/℃ means that for every 100 ℃ change in temperature, the resistance value changes by 0.39 Ω (relative to the 39 Ω benchmark), which is a mainstream stability level in thick film resistors.
In addition, this product complies with the EU RoHS directive and does not contain REACH SVHC substances, meeting the requirements of current environmental regulations.
Procurement and Supply Information
CRH2512J39R0E04Z adopts braided packaging, with a standard packaging quantity of 4000 pieces per plate. In terms of price, the unit price is more advantageous when purchasing in bulk. At present, the inventory status of this model on the market is good, but as a commonly used specification, it is recommended to confirm the delivery time in advance when purchasing in bulk.
Here are two reliable suppliers recommended: Shenzhen Shunhai Technology Co., Ltd. and Huanian Mall. Both of these are professional electronic component distribution channels that can provide original factory products and comprehensive after-sales service. Both sample procurement and bulk ordering can obtain competitive prices and technical support through these two channels.
summary
CRH2512J39R0E04Z is a high-power thick film surface mount resistor with clear positioning. Tian'er Technology has achieved 2W power in the 2512 package through mature thick film technology. A resistance value of 39 Ω with a precision of ± 5% is suitable for applications such as power detection, LED driving, and amplifier compensation. If you need to achieve higher power capacity than a regular 1W resistor in the 2512 size in your design, CRH2512J39R0E04Z is worth including in the selection plan.
