CRH2512F47K0E04Z Ever Ohms High-Power Thick-Film Chip Resistor: Technical Analysis and Application Guide
In industrial power supplies, telecom base stations, and automotive electronics, circuit designs demand higher power handling, thermal stability, and long-term endurance from chip resistors. The CRH2512F47K0E04Z from Ever Ohms Technology delivers 47KΩ resistance and a 2W rating in a 2512 package, making it a mainstream choice for high power-density applications.
CRH2512F47K0E04Z Ever Ohms High-Power Thick-Film Chip Resistor: Technical Analysis and Application Guide
In industrial power supplies, telecom base stations, and automotive electronics, circuit designs demand higher power handling, thermal stability, and long-term endurance from chip resistors. The CRH2512F47K0E04Z from Ever Ohms Technology delivers 47KΩ resistance and a 2W rating in a 2512 package, making it a mainstream choice for high power-density applications.
1. Part Number Decoding and Key Parameters
The part number carries full technical definitions: CRH denotes Ever Ohms' high-power thick-film series; 2512 is the imperial package size (6.35 mm × 3.2 mm × 0.55 mm), compatible with standard SMT lines; F indicates ±1% tolerance; 47K0 is the nominal 47KΩ resistance; E04Z is the factory suffix covering TCR, environmental grade, and packaging.
Electrically, the resistor is rated at 2W (at 70°C board temperature), with a maximum working voltage of 200V and overload voltage up to 400V. The temperature coefficient is ±100ppm/°C, and the operating temperature spans -55°C to +155°C, maintaining low drift across the full range. The terminations use a three-layer structure—silver base, nickel barrier, and tin finish—compliant with RoHS and REACH.
2. Thick-Film Process and Thermal Design
The CRH2512F47K0E04Z uses ruthenium-oxide paste screen-printed on a 96% alumina ceramic substrate. After high-temperature firing, a glass overcoat is applied, and laser trimming achieves the ±1% tolerance. Compared with standard 2512 1W resistors, this part optimizes resistor geometry and heat-dissipation paths to reach 2W, reducing the need for parallel resistors and simplifying PCB layout.
For thermal management, the PCB should include adequate copper area around the pads and thermal vias where necessary to keep temperature rise under control during continuous full-load operation. A 30% power derating is recommended in practice, keeping the long-term load below 1.4W to maximize component life.
3. Typical Applications
The 47KΩ value is commonly used in feedback dividers, soft-start timing networks, and voltage-sensing nodes within power-management circuits. The 2W rating allows it to withstand higher DC voltages or pulse energy directly, fitting the following scenarios:
-
Secondary-side feedback in switched-mode power supplies (SMPS), paired with optocouplers for regulation;
-
Voltage-sensing resistors in industrial inverters and servo drives;
-
Cell-balancing discharge paths in new-energy vehicle BMS systems;
-
Power-sequencing control in telecom power modules.
The part also passes AEC-Q200 reliability tests, offering resistance to humidity, heat, and temperature cycling for outdoor telecom and automotive environments.
4. Selection and Supply Channels
Engineers should verify the resistance suffix carefully to avoid confusing 47K0 (47KΩ) with 47R0 (47Ω). For volume purchasing and long-term supply stability, sourcing through authorized distributors is advised for factory technical support and complete datasheets.
Shenzhen Shunhai Technology Co., Ltd. serves as a core authorized distributor for Ever Ohms, maintaining full CRH-series inventory with fast sample evaluation and reliable delivery for large orders. HuaNian Mall provides online selection tools and real-time quoting, supporting small-batch prototyping purchases for flexible R&D bill-of-materials. Both channels guarantee genuine products with full RoHS test reports.
5. Conclusion
With its 2W output in a 2512 package, ±1% precision, and wide-temperature stability, the CRH2512F47K0E04Z offers clear performance advantages in power and industrial control fields. Proper PCB thermal design and sourcing through authorized channels are key to ensuring stable performance in end products.