CRH2512F1K50E04Z by EVER OHMS – A Comprehensive Technical Overview of the 2512 1.5K 2W Resistor

The CRH2512F1K50E04Z is a high-power thick film chip resistor manufactured by EVER OHMS TECHNOLOGY CO., LTD. (commonly known as 天二科技 / Tian'er Technology). It belongs to the manufacturer's CRH series – a family of high-power thick film resistors engineered to deliver 2W of rated power in a standard 2512 (metric 6432) footprint, making it a compact yet robust solution for demanding power-circuit applications.

Brand Background: EVER OHMS

Founded in 1988 and headquartered in Kaohsiung, Taiwan, EVER OHMS has specialized in chip resistor and resistor array R&D and manufacturing for over three decades. The company holds ISO 9001 and IATF 16949 certifications, and its key products comply with the AEC-Q200 automotive standard. Since 2005, the entire product line has adopted lead-free processes, meeting RoHS and REACH environmental requirements. EVER OHMS' product portfolio spans general-purpose thick film resistors, high-power thick film resistors, thin film precision resistors, alloy current-sensing resistors, anti-sulfur resistors, and high-voltage resistors – covering package sizes from 0201 to 2512 and power ratings from 0.05W to 7W.

The CRH series is the company's flagship high-power thick film line. While conventional 2512 thick film resistors are typically rated at 1W, the CRH series doubles that to 2W within the same footprint through optimized alumina ceramic substrate thermal management and refined thick film paste formulations.

Part Number Decoding

⚠️ Note: The distribution listing on LCSC (立创商城) for the same resistance and power grade is CRH2512J1K50E04Z (J grade, ±5%). When specifying the ±1% (F grade) version, always verify the tolerance code against EVER OHMS' official datasheet.

Key Parameters

• Brand: EVER OHMS
• Series: CRH high-power thick film chip resistor
• Package: 2512 (6432 metric, 6.4mm × 3.2mm)
• Resistance: 1.5KΩ
• Tolerance: ±1% (F) or ±5% (J)
• Rated Power: 2W (at 70℃ ambient)
• Max Working Voltage: 200V
• TCR: ±100ppm/℃
• Operating Temperature: -55℃ ~ +155℃
• Technology: Thick film (ruthenium-based paste on alumina substrate)
• Packaging: Tape & reel, SMT-compatible
• Compliance: RoHS, halogen-free

Product Advantages

1. Doubled Power Density

Conventional 2512 thick film resistors are limited to 1W. The CRH series delivers 2W in the identical footprint, allowing a single 2512 1.5K 2W resistor to replace two parallel 1W parts – simplifying PCB layout and reducing component count.

2. Excellent Thermal Stability

With a TCR of ±100ppm/℃ across a -55℃~+155℃ range, the resistor exhibits controlled resistance drift even under extreme temperature conditions – a significant improvement over standard CR series resistors (typically ±200~±400ppm/℃).

3. Robust Construction

The component uses a 96% alumina ceramic substrate with ruthenium-based thick film paste sintered at high temperature, protected by a glass passivation layer. The three-layer termination (silver/nickel/tin) provides good solderability and anti-sulfur performance. Selected CRH models meet AEC-Q200 automotive qualification.

4. Cost-Performance Balance

At the 2W power tier, the CRH series offers substantial cost advantages over imported brands such as Vishay and KOA while maintaining comparable core specifications – making it an ideal choice for domestic substitution.

5. SMT Production Friendly

Tape & reel packaging is natively compatible with automated pick-and-place lines. For ambient temperatures above 70℃, power derating per the manufacturer's curve is recommended, with additional copper area or thermal vias on the PCB for near-full-load operation.

Typical Applications

• Power Supplies & SMPS: RC snubber circuits, startup current limiting, dummy loads, and output voltage divider sampling in AC/DC and DC/DC converters, LED drivers
• Industrial Control: Signal conditioning, divider sampling, and buffer circuits in variable frequency drives (VFDs), servo drives, and PLC modules
• Automotive & BMS: Voltage detection and power dissipation in onboard power modules and battery management systems (AEC-Q200 qualified variants available)
• Telecom & Consumer Electronics: Base station power supplies, server power distribution, motherboard power management units
• Measurement Instruments: Precision dividers and current limiting in electricity meters, navigation equipment, and test & measurement devices

Recommended Authorized Distributors

When sourcing the CRH2512F1K50E04Z, selecting an authorized distributor is critical to ensure authenticity, technical support, and supply stability. EVER OHMS' primary authorized distributors in mainland China are:

Company Details

Bronze Gleitlager

,

Bronze Sleeve Bushings

 and 

Graphite Plugged Bushings

 from Quality China Factory

• 

  Business Type:

  Distributor/Wholesaler,Manufacturer,Agent,Trading Company 

• 

  Year Established:

  2012 

• 

  Employee Number:

  100~120 

• 

  Ecer Certification：

  Verified Supplier 

About us Established in 2012, Shenzhen Shunhai Technology Co., Ltd. is a premier distributor of electronic components and a provider of integrated product solutions, built upon a legacy of excellence that began with our affiliated company, Yuxing Technology (HK) Co., Ltd., founded in Hong ... About us Established in 2012, Shenzhen Shunhai Technology Co., Ltd. is a premier distributor of electronic components and a provider of integrated product solutions, built upon a legacy of excellence that began with our affiliated company, Yuxing Technology (HK) Co., Ltd., founded in Hong ...

+ Read More