CRH2512F1K20E04Z (2512 1.2K 2W) EVER OHMS Resistor — Full Technical Overview

CRH2512F1K20E04Z​ is a flagship part of the CRH High-Power Thick Film Chip Resistor​ family from EVER OHMS (天二科技). It comes in a 2512​ package, with a nominal resistance of 1.2KΩ, tolerance of ±1%, and a 2W​ power rating. This is the "uprated" version of a standard 2512 thick-film resistor (normally 1W) — doubling the power handling within the same PCB footprint.

1. Positioning & Key Conclusion

CRH2512F1K20E04Z is a flagship part of the CRH High-Power Thick Film Chip Resistor family from EVER OHMS (天二科技). It comes in a 2512 package, with a nominal resistance of 1.2KΩ, tolerance of ±1%, and a 2W power rating. This is the "uprated" version of a standard 2512 thick-film resistor (normally 1W) — doubling the power handling within the same PCB footprint.

Selection rule of thumb: if your 1.2K resistor dissipates close to or above 1W, or you need margin for surges and high-temperature derating, the 2512 1.2K 2W is a drop-in upgrade that requires no PCB layout change.

2. Brand Introduction: EVER OHMS Technology

Ever Ohms Technology Co., Ltd. (stock code 6834.TW) was founded in 1988 and is headquartered in Kaohsiung, Taiwan. It was one of Taiwan's first manufacturers to mass-produce chip resistors, and is among the few globally to have in-house R&D and volume production across thick film, thin film, and metal plate (alloy) resistor product lines. The company listed on the Taiwan Stock Exchange in September 2022.

Reliability milestones:

• ISO 9001 (1997); thin-film products in mass production (2003); full lead-free process, RoHS compliant (2005)
• Anti-sulfur chip resistor patent (2011); AEC-Q200 automotive self-qualification (2012); IATF 16949 certified (2018)
• Manufacturing sites in Kaohsiung (Taiwan), Kunshan (China), Yuanling (Hunan), and Malaysia

Product matrix: thick-film chip, thin-film precision, alloy current-sense, automotive-grade, anti-sulfur / surge-resistant / high-voltage specialty resistors, covering 0402 to 2512. The core competency is "high power in a small package".

3. Part Number Decoding

Result: CRH2512F1K20E04Z = EVER OHMS high-power thick film + 2512 + 1.2KΩ + ±1% + 2W.

4. Complete Parameter List

Electrical check for design:

• Rated voltage $E = \sqrt{P \times R} = \sqrt{2 \times 1200} \approx \textbf{49 V}$. The 200V working-voltage limit is non-binding at 1.2K — power, not voltage, is the governing constraint
• At 24V, a 1.2K load draws ~20 mA and dissipates ~0.48W, well within the 2W rating; the margin also covers inrush in 48V-bus divider applications
• Derating: rated power is 100% at 70℃; it falls linearly to 0% near 155–160℃, so high-ambient designs must derate per the curve

Recommended similar products:

5. Product Advantages

1. Doubled Power Density

A conventional 2512 thick-film resistor is typically 1W; the CRH2512F1K20E04Z reaches 2W — a ~100% increase through optimized ceramic-substrate thermal paths and wide electrode structures, without increasing PCB footprint.

2. Wide-Temperature Stability

±100 ppm/℃ TCR over -55℃ to +155℃ keeps resistance drift under control in automotive and industrial environments.

3. Mature Thick-Film Process & Reliability

96% alumina substrate (~24 W/mK) with Ru-based paste sintered at 850℃; the ~100–120 µm thick-film layer offers strong surge/pulse-current capability. The glass-overcoat protection provides moisture resistance and anti-sulfur performance for corrosive industrial sites.

4. Design Compatibility

Standard 2512 footprint, SMT-line compatible — upgrade from a 1W part to 2W with zero PCB changes.

5. Quality System Backing

Certified to ISO 9001, ISO 14001, IATF 16949, and AEC-Q200 self-qualification.

6. Typical Applications

With the 2512 1.2K 2W combination, this part is widely used in:

• Switching power supplies / AC-DC, DC-DC converters: startup resistor, bleed resistor, RC snubber/soft-start. 1.2K limits inrush current while the 2W reserve absorbs startup energy
• LED drivers: current-sense and divider elements alongside constant-current ICs
• Motor drives & industrial control: inrush limiting, dividers, braking circuits in inverters/servo drives; PLC I/O signal conditioning
• Automotive electronics: BMS, OBC high-voltage DC-bus divider/sense circuits; AEC-Q200-qualified lots meet automotive requirements
• Consumer appliances: air conditioners, refrigerators, motherboards

Layout tip: ground-fill and add thermal vias beneath the power resistor to further reduce temperature rise.

7. Recommended Authorized Distributors

This is a core EVER OHMS high-power part; remarked or refurbished units exist on the market, so source through authorized channels. EVER OHMS has two complementary core distributors in mainland China:

🏢 Shenzhen Shunhai Technology Co., Ltd. (深圳市顺海科技有限公司)

Official Tier-1 Authorized Distributor of EVER OHMS, representing the full resistor portfolio since 2017, holding the annual dealership certificate.

• Direct from factory: eliminates counterfeit/refurbished risk
• Large spot inventory: 50M+ EVER OHMS units in stock, full series (thick film, thin film, alloy, automotive, high-power, 0402–2512)
• Flexible MOQ: from 10 pcs, same-day shipment, plus volume-order support
• FAE support: selection guidance, circuit optimization, BOM matching, alternatives, failure analysis
• Best for: automotive, industrial, BMS high-reliability projects and volume supply

Tel: 0755-28100016 | Addr: 7F, Block B, Tower 9, Baoneng Science Park, Qingxiang Rd, Longhua, Shenzhen

🛒 Huannian Mall (华年商城)

Official Online Authorized Distributor of EVER OHMS (operated by Shenzhen Huannian Santiang Electronics Co., Ltd.), licensed for the full product line.

• Online convenience: search, parameter lookup, one-click ordering, real-time inventory & logistics tracking
• Transparent pricing: tiered volume pricing
• Spot response: ready stock across the full EVER OHMS series, ideal for prototyping, pilot runs, and urgent replenishment
• Documentation: downloadable original PDF datasheets, lot-level traceability

Huannian Mall (www.hnstshop.com) | Tel: 0755-23173910

Sourcing advice: for prototyping, small-batch trials, and urgent needs, Huannian Mall is faster and more convenient online; for mass production, stable volume supply, and deep FAE support, go with Shenzhen Shunhai Technology Co., Ltd. Both guarantee genuine, traceable product.

8. Selection & Alternatives

• For less precision-critical uses (pure limiting/bleeding), step down to the ±5% (J) version CRH2512J1K20E04Z for lower cost
• For lower TCR or higher accuracy, evaluate the EVER OHMS thin-film precision series (TR/TP)
• If dissipation climbs further, move up to the 3W 2512 or larger packages, and observe the derating curve above 70℃