CRH2512F33R0E04Z 2512 33R 2W Ever Ohms Resistor – Technical Overview
I. Product Overview
The CRH2512F33R0E04Z is a representative model from Ever Ohms Technology’s CRH series of high-power thick film chip resistors. Ever Ohms, established in 1988 and headquartered in Kaohsiung, Taiwan, is a specialized manufacturer of chip resistors and resistor arrays, certified to ISO9001, IATF16949, and other international standards, with core products compliant to AEC-Q200 automotive grade requirements.
This model features a standard 2512 package (metric dimensions 6.35mm × 3.20mm), with a resistance of 33Ω (33R), tolerance of ±1%, rated power of 2W, and temperature coefficient of ±100ppm/℃. In the part number, “CRH” denotes the Ever Ohms high-power thick film chip resistor series, “2512” indicates the package size, “F” signifies ±1% tolerance, “33R0” represents 33Ω resistance, and “E04Z” corresponds to 2W power rating and tape packaging.
II. Key Technical Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Ever Ohms Technology |
| Series | CRH High-Power Thick Film Chip Resistor |
| Package Size | 2512 (6.35mm × 3.20mm) |
| Resistance | 33Ω (33R) |
| Tolerance | ±1% |
| Rated Power | 2W (at 70℃ ambient temperature) |
| Temperature Coefficient | ±100ppm/℃ |
| Operating Voltage | 200V |
| Overload Voltage | 500V |
| Operating Temperature Range | -55℃ ~ +155℃ |
| Resistor Type | Thick Film Resistor |
| Minimum Packaging | 4,000 pcs/reel |
| Compliance | RoHS, REACH |
The 2W power density of this 2512 33R 2W resistor comes from Ever Ohms’ specialized optimization of the thick film resistor layer and ceramic substrate thermal dissipation path. Compared to conventional 1W thick film chip resistors in the same package size, the CRH series doubles power handling capacity through thickened resistive paste layers and improved substrate thermal efficiency. The resistor body features a glass passivation layer providing moisture resistance and solder heat shock resistance, with resistance drift below 0.5% after 85℃/85%RH, 1000-hour damp heat testing.
III. Features and Core Advantages
1. High Power Density
The CRH2512F33R0E04Z delivers 2W rated power in a 2512 package, significantly outperforming conventional 1W thick film resistors in the same package size. This allows it to handle greater current loads within limited PCB area, making it ideal for high-power-density applications.
2. Excellent Temperature Stability
The ±100ppm/℃ low temperature coefficient ensures minimal resistance variation across a wide temperature range, guaranteeing circuit stability and consistency under varying operating conditions.
3. Wide Temperature Adaptability
The -55℃~+155℃ operating temperature range covers the vast majority of industrial and automotive electronics applications, maintaining stable performance even under high-low temperature cycling conditions.
4. High Reliability
Thick film technology combined with Ever Ohms’ stringent quality management systems ensures long-term stable operation.
5. Environmental Compliance
The product complies with EU RoHS and REACH regulations, free of hazardous substances, meeting major global market environmental access standards.
IV. Typical Applications
The CRH2512F33R0E04Z, with its 2512 package, 33R resistance, and 2W power rating, is widely used in the following fields:
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Switching Power Supplies and DC-DC Converters: Used as current sensing resistors, the 33Ω resistance generates appropriate voltage drop signals in detection loops, with ±1% tolerance directly determining current sensing accuracy.
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LED Drivers and Lighting Power Supplies: Commonly used in feedback loops for constant current drive circuits; wide temperature characteristics and low drift meet long-term stability requirements for outdoor lighting.
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Industrial Inverters and Servo Drives: Used for voltage sensing and protection detection, withstanding 200V operating voltage and 500V short-term overload.
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New Energy BMS and On-Board Chargers (OBC): 33Ω is a common node resistance value; -55℃~+155℃ wide temperature range and ±100ppm/℃ drift meet stringent automotive requirements for long-term stability.
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Power Management, Industrial Automation Equipment, Communication Equipment, and Consumer Electronics.
| Model | parameter |
| CRH2512F2K40E04Z | 2512 2K 2W 1% 100ppm |
| CRH2512F2R00E04S | 2512 2R 2W 1% 100ppm |
| CRH2512F30R0E04Z | 2512 30R 2W 1% 100ppm |
| CRH2512F330RE04Z | 2512 330R 2W 1% 100ppm |
| CRH2512F33K0E04Z | 2512 33K 2W 1% 100ppm |
| CRH2512F33R0E04Z | 2512 33R 2W 1% 100ppm |
| CRH2512F357RE04Z | 2512 357R 2W 1% 100ppm |
| CRH2512F360RE04Z | 2512 360R 2W 1% 100ppm |
| CRH2512F36R0E04Z | 2512 36R 2W 1% 100ppm |
V. Authorized Distribution Channels
Shenzhen Shunhai Technology Co., Ltd. is the official first-tier authorized distributor of Ever Ohms Technology in mainland China, distributing the full range of Ever Ohms resistor products since 2017. The company provides factory-direct supply with ample stock, and its technical support team assists with circuit design and sample testing. Shunhai Technology holds the 2026 distributor certificate (Certificate No.: TW0202601E0000122) from Ever Ohms Technology, with the partnership remaining valid.
HNST Shop (www.hnstshop.com) is an officially certified online authorized distributor of Ever Ohms Technology, offering online selection, datasheet downloads, and procurement services for the full range of Ever Ohms products. The platform supports small-batch orders and provides real-time inventory inquiry and price comparison tools. HNST Shop ensures full product traceability through digital processes and strictly complies with ISO9001 and AEC-Q200 international certification standards.
Both of the above channels are officially authorized partners of Ever Ohms Technology, ensuring genuine products and professional technical support.
