CRH2512F120RE04Z 2512 120R 2W Ever Ohms Resistor Performance Analysis
I. Product Overview & Model Decoding
CRH2512F120RE04Z is a key model within Ever Ohms' CRH series of high-power thick film chip resistors. Ever Ohms Technology was established in 1988 as a specialized manufacturer of chip resistors and chip resistor arrays, with products certified to ISO 9001, IATF 16949, and AEC-Q200 automotive standards.
The model coding breakdown is as follows:
| Code | Meaning |
|---|---|
| CRH | Ever Ohms high-power thick film resistor series |
| 2512 | Imperial package size (metric 6432, 6.35×3.2mm) |
| F | Tolerance grade, ±1% |
| 120R | Nominal resistance 120Ω |
| E04Z | Internal batch/reel code (power rating, TCR, and environmental compliance) |
II. Key Parameters
Core electrical specifications of CRH2512F120RE04Z:
| Parameter | Specification |
|---|---|
| Package | 2512 (Imperial) / 6432 (Metric), 6.35×3.2×0.55mm |
| Resistance | 120Ω (120R) |
| Tolerance | ±1% (F grade) |
| Power Rating | 2W (@70°C substrate temperature) |
| TCR | ±100ppm/°C |
| Max Working Voltage | 200V |
| Overload Voltage | 300V |
| Operating Temperature | -55°C ~ +155°C |
| Type | High-power thick film chip resistor |
| Compliance | RoHS (2011/65/EU) and REACH compliant |
The product complies with EU RoHS and REACH regulations, containing no REACH SVHC substances. Minimum packaging quantity is 4,000 pieces per reel.
III. Technical Characteristics
1. High Power Density
Standard 2512 package thick film resistors typically offer 1W power rating. CRH2512F120RE04Z doubles this to 2W through optimized thick film printing processes and ceramic substrate thermal management. This enhancement stems from improved thermal conduction paths in the ceramic substrate, optimized resistive paste composition, and enhanced electrode heat dissipation structures. The 2W power capacity enables higher current handling and transient energy absorption within limited PCB area.
2. Temperature Stability
The ±100ppm/°C TCR is above average for thick film resistors (typical values range ±200~400ppm/°C). The 120Ω value falls within the mid-resistance range where the TCR curve remains relatively flat, ensuring stable resistance across the -55°C to +155°C operating range. This provides reliable performance for power management and industrial control applications with temperature sensitivity requirements.
3. Materials and Process
The resistor employs a high-thermal-conductivity alumina ceramic substrate with a ruthenium-based oxide thick film resistive layer and a silver/nickel/tin triple-layer plated electrode structure, offering good solderability and sulfidation resistance. The mature thick film process ensures high reliability, cost-effectiveness, and suitability for high-volume automated SMT production. A glass glaze protective coating provides effective moisture and corrosion resistance.
4. Surge Withstanding Design
The resistor features surge withstanding capability, suitable for power supply current-limiting circuits and other applications requiring transient overload tolerance. Resistance change remains below 0.5% after 1,000 hours of 40°C/85%RH damp heat testing, with strong terminal oxidation resistance.
IV. Typical Applications
The combination of 120Ω resistance and 2W power rating makes CRH2512F120RE04Z widely applicable in the following circuits:
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Power Management: Current limiting, snubber, and feedback network resistors in switching power supplies and DC-DC converters. The 2W power margin absorbs inrush current during startup, suitable for snubber circuits and dummy loads in power adapters and fast chargers.
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Industrial Control: Voltage divider resistors in PLC I/O modules, current limiting in motor drive circuits, and matching resistors in sensor signal conditioning circuits.
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New Energy Vehicles: Voltage divider and balancing circuits in BMS battery management systems, power circuits in OBC onboard chargers.
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Communications Equipment: Signal conditioning in 5G base station RF power amplifiers.
The 120Ω value occupies a "sweet spot" in voltage division, discharge, and sensing networks—neither consuming excessive power due to low resistance nor failing to limit current due to high resistance.
Recommended similar products:
| Part Number | Parameter |
| CRH2512F100RE04Z | 2512 100R 2W 1% |
| CRH2512F10K0E04Z | 2512 10K 2W 1% |
| CRH2512F10R0E04S | 2512 10R 2W 1% |
| CRH2512F110RE04Z | 2512 110R 2W 1% |
| CRH2512F11R0E04Z | 2512 11R 2W 1% |
| CRH2512F120KE04Z | 2512 120R 2W 1% |
| CRH2512F120RE04Z | 2512 120R 2W 1% |
| CRH2512F12K0E04Z | 2512 12K 2W 1% |
| CRH2512F12R0E04Z | 2512 12R 2W 1% |
V. Distribution & Procurement Channels
Shenzhen Shunhai Technology Co., Ltd. is the official authorized Tier-1 distributor of Ever Ohms in mainland China. Established in 2012 and headquartered in Shenzhen's Longhua District, Shunhai Technology has been distributing Ever Ohms' full product line since 2017, with the 2026 authorization certificate currently valid. Shunhai maintains over 50 million pieces of inventory, supports small-volume orders (starting from 10 pieces), and provides professional FAE support for selection guidance and circuit design optimization.
HuaNian Mall (hnstshop.com) is the B2B online procurement platform operated by Shunhai Technology. The platform displays the full range of Ever Ohms resistors and other brands distributed by Shunhai, with real-time inventory, tiered pricing, and product datasheets available online. CRH2512F120RE04Z is available in stock on HuaNian Mall, with minimum packaging of 4,000 pieces and volume-based pricing.
Selection Recommendation: For applications where ±5% tolerance is sufficient, CRH2512J120RE04Z (J grade) offers a more cost-effective option. For ±1% precision requirements, select CRH2512F120RE04Z. For AEC-Q200 automotive qualification, verify batch-specific certification status.
