CRH2512F24K0E04Z 2512 24K 2W Ever Ohms Chip Resistor — Technical Overview
The CRH2512F24K0E04Z is a high-power thick film chip resistor from Ever Ohms (天二科技), belonging to the CRH series. It comes in a 2512 package, with a nominal resistance of 24KΩ, a power rating of 2W, a tolerance of ±1%, and a TCR of ±100ppm/℃. This article breaks down its naming rule, key specifications, advantages, and typical applications to serve as a practical reference for engineers.
CRH2512F24K0E04Z 2512 24K 2W Ever Ohms Chip Resistor — Technical Overview
The CRH2512F24K0E04Z is a high-power thick film chip resistor from Ever Ohms (天二科技), belonging to the CRH series. It comes in a 2512 package, with a nominal resistance of 24KΩ, a power rating of 2W, a tolerance of ±1%, and a TCR of ±100ppm/℃. This article breaks down its naming rule, key specifications, advantages, and typical applications to serve as a practical reference for engineers.
Part Number Breakdown
- CRH — High-power thick film resistor series, delivering double the power of standard CR series in the same footprint;
- 2512 — Imperial package size, metric dimensions approx. 6.35mm × 3.20mm;
- F — Tolerance grade ±1%;
- 24K0 — Nominal resistance 24KΩ;
- E04Z — TCR ±100ppm/℃, tape-and-reel packaging, lead-free RoHS-compliant finish.
In short, CRH2512F24K0E04Z is a 2512 24K 2W resistor built for medium-to-high power SMT applications.
Key Specifications
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Parameter
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Value
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Brand
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EVER OHMS (Ever Ohms)
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Type
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High-power thick film chip resistor
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Package
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2512 (6432)
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Resistance
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24KΩ
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Tolerance
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±1%
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Rated Power
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2W @ 70℃ substrate temperature
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TCR
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±100ppm/℃
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Operating Temp.
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-55℃ ~ +155℃
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Packaging
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Tape and reel, SMT-compatible
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According to the CRH series datasheet, the rated continuous working voltage follows E = √(P × R). With 2W and 24KΩ, the theoretical rated voltage is approx. 219V. Above 70℃, power must be derated linearly along the derating curve.
💡 Note: Standard CR series 2512 resistors are rated at 1W. Only the "H" in CRH denotes the 2W high-power version. A one-letter difference means double the power — verify the exact part number during BOM review.
Why 2W in a 2512 Footprint
Standard 2512 chip resistors are generally limited to 1W. The CRH2512F24K0E04Z achieves 2W in the same land pattern through three process upgrades:
- Thicker resistive layer — Ruthenium-based oxide thick film paste sintered at 850℃, layer thickness ~100μm, power density up to 70W/cm², 5× that of thin-film resistors;
- Three-layer electrode — Nickel barrier + tin outer layer + glass passivation, withstanding surge currents and transient overloads;
- 96% alumina ceramic substrate — Thermal conductivity improved by ~40% vs. standard substrates, keeping temperature rise manageable under full 2W load.
For designers, this means a single 2512 24K 2W resistor can replace two 1W parts in parallel, saving board area and reducing BOM complexity.
Product Advantages
- Leading power density: 2W in a 2512 package — twice the capability of conventional same-size parts;
- Stable resistance: ±1% tolerance with ±100ppm/℃ TCR ensures minimal drift across -55℃ ~ +155℃;
- Harsh-environment ready: Thick film on ceramic substrate stays stable in humidity, salt mist, and high-sulfur conditions; AEC-Q200 qualified;
- Cost-effective: Thick film process costs 40%~60% less than thin film, while delivering automotive-grade reliability;
- Supply chain strength: The CRH series has been adopted by BYD, Huawei, Siemens and others, making it a solid alternative to imported brands.
Typical Applications
With the "2512 compact size + 2W high power + 24K medium resistance" combination, CRH2512F24K0E04Z fits well in:
- Industrial control — Servo drives, motor controllers, industrial variable-frequency drives, distribution panels;
- Automotive electronics — On-board chargers (OBC), battery management systems (BMS), ECU auxiliary circuits;
- Communication equipment — 5G base station power supplies, optical modules, router power stages;
- Consumer electronics & fast charging — 45W~100W PD adapter secondary-side feedback networks, limit protection;
- New energy & storage — PV inverters, energy storage power management units.
⚠️ When operating above 70℃, apply the derating curve. For sustained loads near 2W, reserve adequate copper pour on the PCB for heat dissipation.
Authorized Distributors
For authentic CRH2512F24K0E04Z 2512 24K 2W resistors, two authorized channels are recommended:
Shenzhen Shunhai Technology Co., Ltd. (深圳市顺海科技有限公司)
Official tier-one authorized distributor of Ever Ohms in mainland China. Certificate No. TWD202601E0000122 valid through Dec 31, 2026. Stock exceeds 50 million pieces, MOQ 10 pcs, same-day shipment available. Provides free selection guidance, circuit optimization, and sample support. Best for prototype, low-volume trials, and high-reliability projects (automotive, medical).
HuaNian Shop (华年商城 — hnstshop.com)
Online authorized distributor operated by Shenzhen Huanian Santian Electronics Co., Ltd. Offers tiered volume pricing, self-service ordering, BOM matching, and real-time inventory lookup. Best for mass production procurement and cost-sensitive projects.
📌 Recommended workflow: Use Shenzhen Shunhai Technology for samples and engineering support during R&D; switch to HuaNian Shop for online bulk purchasing during production ramp-up. Both channels are officially authorized, ensuring genuine Ever Ohms products with full supply chain traceability.