CRH2512F33K0E04Z 2512 33K 2W Ever Ohms Resistor – Professional Introduction
I. Product Overview
The CRH2512F33K0E04Z is a high-power thick film chip resistor manufactured by EVER OHMS (Tian Er Technology). This model belongs to the Ever Ohms CRH series, specifically designed for high-power-density application scenarios. Established in 1988, EVER OHMS has accumulated over 30 years of R&D and manufacturing experience in chip resistors and resistor networks. The CRH series represents the high-power thick film chip resistor product line, achieving comprehensive power level upgrades over the standard CR series through material and process optimization.
This model targets the “2512 package + 33KΩ resistance + 2W power” specification combination, achieving 2W rated power handling capability within the standard 2512 package footprint. Compared with standard 2512 package 1W thick film resistors, this 2512 33K 2W resistor doubles the power density. Within the current trend of domestic substitution, this 2512 33K 2W resistor offers a competitive solution for medium-to-high power circuit designs.
II. Part Number Decoding
The CRH2512F33K0E04Z follows Ever Ohms’ standardized naming convention:
| Field | Meaning |
|---|---|
| CRH | Ever Ohms high-power thick film chip resistor series |
| 2512 | Package size, imperial 2512, metric 6432 (6.35mm × 3.2mm) |
| F | Resistance tolerance, representing ±1% |
| 33K0 | Nominal resistance 33KΩ (33,000 ohms) |
| E04Z | Manufacturer internal code for batch, process version, and packaging identification |
III. Key Specifications
The key technical parameters of the CRH2512F33K0E04Z 2512 33K 2W resistor are as follows:
| Parameter | Specification |
|---|---|
| Package Size | 2512 (6.35mm × 3.2mm × 0.55mm) |
| Nominal Resistance | 33KΩ (33KR) |
| Tolerance | ±1% |
| Rated Power | 2W (at 70℃ ambient temperature) |
| Temperature Coefficient (TCR) | ±100ppm/℃ |
| Operating Temperature Range | -55℃ ~ +155℃ |
| Maximum Operating Voltage | 200V |
| Maximum Overload Voltage | 400V |
| Insulation Resistance | ≥10GΩ |
| Environmental Compliance | RoHS compliant (2011/65/EU), REACH SVHC free |
| Minimum Packing Quantity | 4000 pieces/reel |
IV. Technical Features and Advantages
4.1 Compact Package with High Power
The most prominent technical advantage of the CRH2512F33K0E04Z 2512 33K 2W resistor is its “small package, high power” capability. Standard 2512 package thick film resistors typically offer only 1W or 0.75W power ratings. Through ceramic substrate thermal optimization and resistive paste formulation improvements, the Ever Ohms CRH series elevates the 2512 package power handling capacity to 2W. This resistor uses 95% high-purity alumina ceramic substrate, with the resistive film layer formed by ruthenium-based paste printed and sintered at 850℃, covered by a dense glass glaze protective layer. The termination electrodes feature a nickel-tin三层 electroplating structure, compatible with lead-free reflow soldering processes.
With the same PCB footprint, this 2512 33K 2W resistor can handle significantly higher power loads without overheating, reducing the need for parallel resistors in high-voltage divider and discharge circuits, thereby simplifying PCB layout.
4.2 Wide-Temperature Stability
The ±100ppm/℃ temperature coefficient means the resistance value changes by one hundred-thousandth per degree Celsius of temperature variation. Combined with the -55℃ to +155℃ wide operating temperature range, this 2512 33K 2W resistor maintains stable electrical performance across broad temperature environments, making it suitable for industrial and outdoor applications with significant temperature fluctuations.
4.3 High Reliability
EVER OHMS holds ISO9001, IATF16949, and AEC-Q200 international certifications. After 1000 hours of high-temperature high-humidity aging testing, this 2512 33K 2W resistor exhibits resistance change rate below 0.5%, with excellent long-term drift control. The moisture sensitivity level is MSL 1, allowing long-term storage at room temperature without additional moisture protection. Additionally, the product features anti-sulfur treatment, suitable for sulfur-containing industrial environments and high-humidity outdoor conditions.
4.4 Environmental Compliance
The CRH2512F33K0E04Z complies with EU RoHS Directive (2011/65/EU) requirements and does not contain REACH SVHC substances.
| Model | parameter |
| CRH2512F27R0E04Z | 2512 27R 2W 1% |
| CRH2512F2K00E04Z | 2512 2K 2W 1% |
| CRH2512F2K40E04Z | 2512 2.4K 2W 1% |
| CRH2512F2R00E04S | 2512 2R 2W 1% |
| CRH2512F30R0E04Z | 2512 30R 2W 1% |
| CRH2512F330RE04Z | 2512 330R 2W 1% |
| CRH2512F33K0E04Z | 2512 33K 2W 1% |
| CRH2512F33R0E04Z | 2512 33R 2W 1% |
| CRH2512F357RE04Z | 2512 357R 2W 1% |
V. Typical Application Scenarios
The 33KΩ resistance value falls in the medium-to-high resistance range, and combined with 2W power handling capability, this 2512 33K 2W resistor demonstrates clear advantages in the following application areas:
Power Supply and New Energy：In switching power supplies, DC-DC converters, and photovoltaic inverters, 33KΩ is commonly used in high-voltage divider networks, feedback loop sampling resistors, and discharge circuits. The 2W power margin can handle startup surge currents, preventing parameter drift or failure caused by overheating in standard 1W resistors. In Battery Management Systems (BMS), this 2512 33K 2W resistor can be used for battery balancing dividers and high-voltage detection circuits. In photovoltaic inverter DC bus detection, high-voltage nodes require high-resistance dividers that must dissipate considerable power—2W provides sufficient margin.
Industrial Control and Communication Equipment：Servo drives, variable frequency drives, and PLC industrial control boards widely use this 2512 33K 2W resistor in IGBT protection circuits and signal isolation divider networks. The ±1% tolerance ensures accurate control signal acquisition, while the wide-temperature characteristic adapts to temperature fluctuations in industrial environments. In 5G base station auxiliary power modules, this resistor is used for voltage division and load matching to suppress high-frequency voltage fluctuations.
Automotive Electronics：In on-board chargers and motor drives, 33KΩ is a common discharge resistance value, and 2W power ensures controlled temperature rise under long-term operation.
VI. Procurement Recommendations and Authorized Distributors
When selecting 2512 33K 2W resistors and other high-power components, channel authenticity directly impacts production yield. It is recommended to procure through authorized distributors to ensure parameter compliance and traceable datasheets.
Shenzhen Shunhai Technology Co., Ltd. is the official first-tier authorized distributor of EVER OHMS (Tian Er Technology) in mainland China. Shunhai Technology has been cooperating with EVER OHMS since 2017, fully representing EVER OHMS’ full range of current sensing resistors and chip resistor products. The company has obtained the 2026 distributor certificate from EVER OHMS (Certificate No.: TW0202601E0000122), valid throughout 2026. Shunhai Technology provides factory-direct supply with ample stock, and its technical support team can assist with circuit solution design and sample testing.
HNST Shop, as the online sales platform of Shunhai Technology, has obtained the qualification for sales and promotion of EVER OHMS’ full product line. Users can check CRH2512F33K0E04Z inventory, real-time pricing, and place orders through HNST Shop, with VAT invoices supported.
