CRH2512F220RE04Z EVER OHMS Resistor Product Deep Dive
I. Model Number Decoding
CRH2512F220RE04Z is a standard model of the EVER OHMS CRH series high-power thick film chip resistor. The complete model number follows EVER OHMS' segmented coding rules:
| Field | Meaning |
|---|---|
| CRH | Chip Resistor High Power series, using power-upgraded process design |
| 2512 | Imperial package code, metric size 6432 (6.35mm × 3.20mm × 0.55mm) |
| F | Tolerance class ±1% |
| 220R | Nominal resistance 220Ω |
| E04 | 7-inch (178mm) tape and reel packaging, 4000 pieces per reel |
| Z | RoHS compliant, lead-free and halogen-free |
II. Key Parameters
| Parameter | Specification |
|---|---|
| Product Series | CRH High-Power Thick Film Chip Resistor |
| Package Size | 2512 (Metric 6432, 6.35mm × 3.20mm × 0.55mm) |
| Nominal Resistance | 220Ω (220R) |
| Tolerance | ±1% (Class F) |
| Rated Power | 2W (@70℃) |
| Temperature Coefficient (TCR) | ±100ppm/℃ |
| Maximum Operating Voltage | 200V |
| Operating Temperature Range | -55℃ ~ +155℃ |
| Compliance | RoHS (2011/65/EU), REACH (SVHC-free) |
| Packaging | Tape & Reel, 4000 pieces/reel |
Based on the formula U = √(P×R), the continuous operating voltage at rated power is approximately 6.63V, well below the 200V withstand voltage limit. Therefore, power dissipation is the primary design constraint in practical applications, rather than voltage withstand capability. The ±100ppm/℃ temperature coefficient represents a good level in thick film technology. Across the full -55℃ to +155℃ temperature range, the maximum resistance drift is approximately ±2.1%. When combined with the ±1% initial tolerance, the total error across the full temperature range can be controlled within an acceptable range for industrial circuits.
Recommended similar products:
| Model | Parameter |
| CRH2512F220RE04Z | 2512 220R 2W 1% |
| 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% |
III. Product Advantages
The CRH series is EVER OHMS' high-power thick film chip resistor product line, covering eight package sizes from 0402 to 2512, with power ratings ranging from 0.1W to 2W and resistance values from 10mΩ to 10MΩ. CRH2512F220RE04Z offers the following core advantages:
1. High Power Density
Taking the 2512 package as an example, standard thick film resistors typically have a rated power of 1W, while CRH2512F220RE04Z delivers 2W—a 100% increase. This improvement is not merely a parameter specification but stems from EVER OHMS' deep optimization of thick film processes—improving ceramic substrate thermal paths, optimizing resistor paste composition, and enhancing electrode heat dissipation structures to achieve higher thermal energy dissipation efficiency within the same package volume.
2. Superior Temperature Stability
The CRH series strictly controls the temperature coefficient (TCR) at ±100ppm/℃, with an operating temperature range covering -55℃ to +155℃. In comparison, standard thick film resistors in the same package typically have TCR values ranging from ±200ppm/℃ to ±400ppm/℃. In industrial power supplies operating under prolonged full load or automotive electronics in wide-temperature environments, CRH2512F220RE04Z maintains more stable resistance accuracy, preventing control loop inaccuracies caused by temperature drift.
3. Reliable Construction and Process
The CRH series uses high-purity alumina ceramic as the substrate. The back electrode and front resistor layer are formed through screen-printed thick film paste, sintered at high temperature to form a stable resistor body, with an outer glass protective layer to resist mechanical damage and environmental erosion. The termination electrodes adopt a three-layer structure—inner silver-palladium electrode, middle nickel barrier layer, and outer tin plating layer—providing excellent solderability and leach resistance.
4. Environmental Compliance
The product complies with EU RoHS (2011/65/EU) requirements and does not contain REACH SVHC (Substances of Very High Concern).
5. Automated Production Compatibility
Adopts 4000 pieces/reel tape and reel packaging, compatible with automated SMT assembly lines.
IV. Product Applications
Leveraging the combined advantages of the 2512 package and 2W power rating, CRH2512F220RE04Z is widely used in the following fields:
Power Management
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Current limiting and voltage divider circuits in switching power supplies and DC-DC converters
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Power resistor applications in power adapters and fast chargers
Industrial Control
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Power resistor applications in variable frequency drives, PLCs, and industrial voltage regulators
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Braking resistors or current sensing front-ends in servo drives and motor control
Automotive Electronics
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Cell voltage balancing circuits in new energy vehicle battery management systems (BMS)
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Sampling and protection circuits in ECUs
Consumer Electronics
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Fast charging power adapters and computer motherboards
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Network switches, smart cameras, and other devices
In new energy vehicle BMS applications, the 2W power capability ensures effective heat dissipation during extended balancing operations. In industrial switching power supply secondary feedback voltage divider networks, the high power margin prevents feedback resistor burnout caused by output short circuits that could lead to power supply失控.
V. Authorized Distributors
Shenzhen Shunhai Technology Co., Ltd. is the official first-tier authorized distributor of EVER OHMS in mainland China. The company has been distributing EVER OHMS' full range of resistor products since 2017, with a partnership lasting nearly a decade, and the 2026 distributor certificate has been officially renewed. Shunhai Technology provides factory-direct supply with ample stock, and is equipped with a professional technical support team (FAE) capable of providing circuit optimization, parameter calculation, and other in-depth services. The product line is comprehensive, with现货 covering all package sizes from 0402 to 2512.
Hua Nian Mall, as the online platform of Shunhai Technology, has officially launched the full range of EVER OHMS products, offering online purchasing and technical support for CRH2512F220RE04Z.
