CRH2512F24R0E04Z EVER OHMS Resistor – Multi-Dimensional Technical Analysis
I. Model Number Naming Convention
CRH2512F24R0E04Z is the complete part number for the EVER OHMS CRH series high-power thick film chip resistor. The model coding follows EVER OHMS' standardized naming rules, with each segment corresponding to specific electrical and physical specifications:
| Field | Meaning | Description |
|---|---|---|
| CRH | Series code | High Power Thick Film Chip Resistor series, optimized for high-power load and high-temperature operating conditions |
| 2512 | Package size | EIA imperial package 2512, metric 6.35mm × 3.20mm |
| F | Tolerance grade | F = ±1% tolerance (J = ±5%, B = ±0.1%) |
| 24R0 | Nominal resistance | 24Ω (24R is common notation in BOM), R serves as decimal point substitute |
| E04Z | Suffix code | E = temperature coefficient code, 04 = 4000pcs tape and reel packaging, Z = lead-free and halogen-free, RoHS and REACH compliant |
Complete interpretation: EVER OHMS CRH series, 2512 package, 24Ω resistance, ±1% tolerance, 2W power, ±100ppm/℃ TCR high-power thick film chip resistor.
II. Product Core Parameters
Key electrical and physical parameters of CRH2512F24R0E04Z (2512 24R 2W resistor):
| Parameter | Specification |
|---|---|
| Package Size | 2512 (imperial), 6.35mm × 3.20mm |
| Nominal Resistance | 24Ω (24R) |
| Tolerance | ±1% (F grade) |
| Rated Power | 2W (continuous operation at 70℃ ambient) |
| Temperature Coefficient (TCR) | ±100ppm/℃ |
| Maximum Working Voltage | 200V |
| Operating Temperature Range | -55℃ ~ +155℃ |
| Resistor Type | Thick Film Resistor |
| Environmental Compliance | RoHS compliant, REACH SVHC-free |
Key Parameter Interpretation:
Power density is the core technical feature of CRH2512F24R0E04Z. Standard 2512 package thick film resistors typically have a rated power of only 1W, while the CRH series achieves 2W power handling capability in the same physical footprint through optimized thick film paste formulation, ceramic substrate thermal path, and multi-layer terminal electrode design. This means engineers can obtain double power margin without increasing PCB footprint.
In terms of temperature characteristics, TCR is strictly controlled at ±100ppm/℃, with operating temperature covering -55℃ to +155℃. It maintains stable resistance accuracy in industrial power supplies under long-term full-load operation or automotive electronics wide-temperature environments.
For environmental compliance, the product meets RoHS Directive (2011/65/EU) requirements and contains no REACH SVHC substances.
III. Application Fields
The 2512 24R 2W resistor, with its combination of 24Ω resistance and 2W power, is widely used in the following fields:
Power Management – In AC-DC switching power supplies, DC-DC modules, power adapters, and charger primary-side circuits, used as output current-limiting resistors, RC snubber damping resistors, and MOSFET gate drive series resistors to suppress voltage spikes and protect power devices.
Industrial Control and Motor Drive – In frequency converters, servo drives, stepper motor driver boards, and PLC modules, used for H-bridge current sensing, braking discharge, and relay drive current limiting.
Automotive Electronics and Battery Management Systems (BMS) – Used in battery protection boards and on-board power modules for power discharge and current limiting protection.
LED Lighting Drivers – In high-power LED driver power supplies with high internal temperatures, used for IC supply pins or as dummy loads to prevent excessive output voltage.
Communications and Consumer Electronics – Used as key power resistor components in power management circuits for communication equipment, computers, and consumer electronics.
IV. Product Advantages
1. Doubled Power Density
The CRH series doubles the power handling capability of the 2512 package through thickened substrate, optimized thermal paths, and increased resistor film thickness. A single component can replace two parallel resistors, simplifying PCB layout. The process uses 96% high thermal conductivity alumina ceramic substrate with ruthenium-based thick film paste fired at high temperature, surface covered with glass passivation layer for moisture and oxidation protection, and Ag/Ni/Sn三层 terminal electrode structure for solderability and sulfidation resistance.
2. Excellent Temperature Stability
±100ppm/℃ temperature coefficient ensures controllable resistance drift across the -55℃~+155℃ wide temperature range, with no significant parameter shift under long-term full-load operation. Compared to standard CR series (typically ±200ppm/℃ to ±400ppm/℃), the CRH series demonstrates superior stability under high-temperature operating conditions.
3. Robust Withstand Capability
Capable of withstanding short-term surge current impact, with ceramic substrate and thickened electrodes resistant to thermal cycle cracking, compatible with automated SMT high-temperature reflow soldering processes. Operating temperature range covers -55℃ to +155℃ for harsh environments.
4. Environmental Compliance
Entire manufacturing process is halogen-free and lead-free, RoHS certified, meeting stringent environmental standards for medical, automotive, and communications equipment.
Selection Note: When operating above 70℃, derating curves should be followed to reserve power margin. If actual power dissipation approaches 2W, it is recommended to increase copper pour area or add thermal vias on the PCB to ensure long-term stability of the 2512 24R 2W resistor.
| 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% |
V. Brand Advantages
EVER OHMS TECHNOLOGY CO., LTD. was established in 1988, with over 30 years of R&D capability and manufacturing technology for chip resistors and resistor networks. The company has obtained ISO9001 Quality Management System and IATF16949 Automotive Industry Quality Management System certifications, with multiple core products compliant with AEC-Q200 automotive grade standards.
Over the past decade, EVER OHMS has focused on the development and production of specialized chip resistors, with key product lines including thick film large-size chip resistors, high-power chip resistors, thin film precision chip resistors, automotive-grade chip resistors, anti-sulfuration chip resistors, high-voltage chip resistors, current sensing milliohm chip resistors, and alloy chip resistors. The 2030 size is a patented product with maximum power up to 5W; thin film precision resistors can achieve tolerance as low as 0.01%.
Distinguishing itself from homogenized low-end resistor products, EVER OHMS balances cost-effectiveness for general-purpose markets with stringent performance for high-end applications, while completing global quality system deployment and continuously investing in R&D to optimize production technology.
VI. Authorized Distributors
Shenzhen Shunhai Technology Co., Ltd. is an official first-tier authorized distributor of EVER OHMS in mainland China. The company has been partnering with EVER OHMS since 2017, with full authorization for the complete range of current sensing resistors and chip resistor products. Shunhai Technology maintains a 2000㎡ warehousing center with sufficient stock, supports 72-hour expedited shipping, and provides free selection consultation through its technical team. Authorization Certificate No.: TW0202601E0000122.
HuaNian Mall is an official online authorized platform of EVER OHMS. The platform provides transparent B2B procurement services with real-time product inventory, tiered pricing, and technical documentation. HuaNian Mall supports small-batch orders down to single-piece orders, making it ideal for R&D prototyping and SME procurement needs, with full product traceability to ensure authenticity.
For bulk procurement or sample testing, please contact Shenzhen Shunhai Technology Co., Ltd. directly; for R&D prototyping and small-batch spare parts, purchases can be made through the HuaNian Mall online platform.
