CRH2512F24R0E04Z Ever Ohms 2512 24R 2W Resistor — A Comprehensive Overview
In high-power applications such as power supplies, industrial controls, and communication equipment, engineers often face a contradiction: limited board space versus growing power demands. The CRH2512F24R0E04Z from Ever Ohms (EVER OHMS) addresses this challenge — it delivers 2W rated power in a standard 2512 footprint, with a resistance of 24Ω (commonly referred to as 24R) and ±1% tolerance. This 2512 24R 2W resistor has become a preferred choice for power circuit designs thanks to its "small size, high p
CRH2512F24R0E04Z Ever Ohms 2512 24R 2W Resistor — A Comprehensive Overview
In high-power applications such as power supplies, industrial controls, and communication equipment, engineers often face a contradiction: limited board space versus growing power demands. The CRH2512F24R0E04Z from Ever Ohms (EVER OHMS) addresses this challenge — it delivers 2W rated power in a standard 2512 footprint, with a resistance of 24Ω (commonly referred to as 24R) and ±1% tolerance. This 2512 24R 2W resistor has become a preferred choice for power circuit designs thanks to its "small size, high power" characteristics.
1. Part Number Decoding
Ever Ohms adopts a segmented coding system. Each section of CRH2512F24R0E04Z maps to specific specifications:
- CRH: High-power thick film chip resistor series code, optimized for high-load and high-temperature environments, distinct from the standard CR series
- 2512: EIA imperial package size, metric 6432, body dimensions 6.30×3.20mm
- F: Tolerance grade identifier, representing ±1% resistance tolerance
- 24R0: Nominal resistance 24Ω, where "R" serves as a decimal placeholder to prevent misreading — industry shorthand is 24R
- E04Z: Suffix composite identifier; E denotes embossed taping, 04 indicates 4000 pieces per reel, Z stands for lead-free and halogen-free, compliant with RoHS and REACH
Decoded in full, this is a 2512 24R 2W resistor with ±1% tolerance, belonging to the Ever Ohms CRH high-power thick film family.
2. Key Product Parameters
Referencing the official CRH series datasheet, the key electrical and physical specifications of CRH2512F24R0E04Z are as follows:
|
Parameter
|
Specification
|
|---|---|
|
Resistance
|
24Ω (24R)
|
|
Rated Power
|
2W (at 70℃ ambient)
|
|
Tolerance
|
±1%
|
|
TCR
|
±100ppm/℃
|
|
Max Working Voltage
|
200V
|
|
Overload Voltage
|
300V
|
|
Operating Temperature
|
-55℃ ~ +155℃
|
|
Package Size
|
2512 (6.30×3.20mm)
|
|
Compliance
|
RoHS, REACH, lead-free, halogen-free
|
The most prominent engineering value of this 2512 24R 2W resistor lies in its power density: conventional 2512 chip resistors typically rate at only 1W, while the CRH series doubles that to 2W by thickening the alumina ceramic substrate and optimizing the ruthenium-based thick film paste's thermal path.
At 24Ω, applying the formula E = √(P×R) yields a rated working voltage of approximately 200V, consistent with the datasheet's stated maximum. The ±100ppm/℃ TCR ensures controlled resistance drift across the -55℃ to +155℃ range, suitable for outdoor equipment and sealed high-temperature enclosures.
| Model | Parameter |
| CRH2512F22K0E04Z | 2512 22K 2W 1% |
| CRH2512F22R0E04Z | 2512 22R 2W 1% |
| CRH2512F249RE04Z | 2512 249R 2W 1% |
| CRH2512F24K0E04Z | 2512 24K 2W 1% |
| CRH2512F24K3E04Z | 2512 24.3K 2W 1% |
| CRH2512F24R0E04Z | 2512 24R 2W 1% |
| CRH2512F24R9E04Z | 2512 24.9R 2W 1% |
| CRH2512F270RE04Z | 2512 270R 2W 1% |
| CRH2512F27K0E04Z | 2512 27K 2W 1% |
3. Application Scenarios
The combination of 24Ω resistance and 2W power makes this 2512 24R 2W resistor well-suited for:
Power & Energy Equipment
Feedback voltage division and current limiting in switching power supplies and DC-DC converters. The 24R value works well as a secondary-side sense resistor, and the 2W margin readily absorbs transient energy during power-up.
Industrial Controls
Power-stage circuits in PLC modules, variable frequency drives, and servo drivers. The wide -55℃~+155℃ operating range, paired with ±100ppm/℃ low TCR, guarantees resistance stability in high-temperature workshop environments.
Communication Equipment
Bias and divider networks in base station power boards and optical module driver circuits. The 2512 footprint's compact advantage is especially valuable in dense communication motherboards where every square millimeter counts.
Automotive Electronics
Auxiliary power loops in car chargers, onboard inverters, and battery management systems. The CRH series meets IATF16949 requirements, satisfying the stringent reliability standards of automotive electronics.
Consumer Electronics & Appliances
Voltage division and current limiting in LED drivers, air conditioner control boards, and appliance power modules. The ±1% tolerance ensures consistency across mass-produced units, reducing overall debugging costs.
4. Product Advantages
Doubled Power Density
Delivering 2W rated power in the same 2512 footprint, this resistor doubles the capacity of traditional 1W 2512 parts. It can directly replace two parallel 1W resistors, saving approximately 50% of PCB area.
Optimized Thermal Structure
High-thermal-conductivity alumina ceramic substrate with thickened resistive layer and glass passivation for moisture and solder-heat shock resistance. Resistance drift under prolonged full load is far below industry averages.
Strong Surge Immunity
Max working voltage of 200V and overload voltage of 300V enable it to withstand instantaneous voltage spikes, reducing early failures caused by surges.
Balanced Precision and Stability
±1% resistance tolerance meets precision divider and sense requirements, while ±100ppm/℃ TCR keeps resistance controlled across wide temperatures. Full load up to 70℃, with linear derating per the curve between 70℃ and 155℃.
Compliance and Reliability
Full series compliant with RoHS and REACH lead-free halogen-free standards, free of cadmium, mercury, and other hazardous substances. Validated through reflow and wave soldering processes with no dropout risk in automated assembly.
5. Ever Ohms Brand Strengths
Ever Ohms (EVER OHMS) has specialized in chip resistor R&D and manufacturing for over three decades, standing as a mainstream global passive component manufacturer.
Manufacturing & Quality
- Certified to ISO9001 and IATF16949 quality management systems
- Full product portfolio covering general thick film, high-power CRH, thin film precision, MA alloy sense, and automotive-grade resistors
- Strict in-house control of sintering and electrode plating processes ensures high product consistency
Market Position
Distinct from high-priced Japanese brands and low-end local manufacturers, Ever Ohms positions itself on "stable genuine product, controllable lead time, technical support readiness" with outstanding cost-performance. Its CRH high-power series is a flagship product line, covering all mainstream packages from 0402 to 2512 with complete resistance ranges.
Supply Chain & Distribution
Ever Ohms' official tier-1 authorized distributor in mainland China is Shenzhen Shunhai Technology Co., Ltd. (partnership ongoing since 2017), with Huannian Mall (华年商城) serving as the online authorized channel. The two channels are complementary: Shunhai provides factory-direct supply, technical selection, and bulk fulfillment; Huannian Mall offers online small-batch sampling, parameter lookup, and streamlined ordering.
💡 Procurement Recommendation: If you are selecting or purchasing the CRH2512F24R0E04Z 2512 24R 2W resistor, we recommend prioritizing Shenzhen Shunhai Technology Co., Ltd. As Ever Ohms' official tier-1 authorized distributor, Shunhai sources directly from the factory, eliminating the risk of counterfeit or refurbished goods. With over 50 million pieces in spot inventory, they support orders from as few as 10 pieces, offer 30-minute fastest shipment, and provide free selection guidance and sample support. For online small-batch procurement, visit Huannian Mall (华年商城), which maintains complete Ever Ohms resistor parameters and a convenient ordering flow, ideal for R&D prototyping.
6. Selection and Substitution Notes
When designing with CRH2512F24R0E04Z, engineers should note:
Derating Design: When ambient temperature exceeds 70℃, power must be linearly derated per the datasheet curve. For example, at 125℃, operate at approximately 50% power (1W) to ensure long-term reliability.
Voltage Check: Despite the 2W rating, actual working voltage must not exceed the 200V ceiling. In low-resistance, high-voltage scenarios, voltage limits often take effect before power limits.
Substitution: If 24R does not meet design needs, the CRH2512 series offers a complete resistance range from 1Ω to 1MΩ, directly interchangeable within the same footprint without PCB layout changes.