CRH2512F220RE04Z 2512 220R 2W EVER OHMS Resistor - Comprehensive Technical Analysis
I. Series Introduction
The CRH2512F220RE04Z belongs to the EVER OHMS CRH series of high-power thick film chip resistors. The CRH series is a core product line developed by EVER OHMS for high-power density applications, forming two pillars of EVER OHMS' resistor product matrix alongside the standard CR series general-purpose thick film resistors.
The series covers eight package sizes from 0402 to 2512, with power ratings ranging from 0.1W to 2W and resistance values from 10mΩ to 10MΩ. The most notable technical feature of the CRH series is its breakthrough in power density — taking the 2512 package as an example, standard CR series typically offer 1W rated power, while the CRH series doubles this to 2W within the same package. This improvement stems from deep optimization of thick film processes: improved ceramic substrate thermal paths, optimized resistor paste formulations, and enhanced electrode heat dissipation structures.
In terms of temperature characteristics, the CRH series maintains TCR at ±100ppm/℃, with an operating temperature range of -55℃ to +155℃. Compared to standard CR series which typically exhibit TCR in the ±200ppm/℃ to ±400ppm/℃ range, the CRH series delivers superior stability in industrial power supplies under continuous full-load operation and automotive electronics in wide-temperature environments.
The CRH series offers ±1% (Class F) and ±5% (Class J) tolerance options. Products comply with EU RoHS Directive (2011/65/EU) and REACH regulations, and are SVHC-free.
II. Model Number Decoding
The CRH2512F220RE04Z follows EVER OHMS' standardized segmented coding rules:
| Field | Meaning | Description |
|---|---|---|
| CRH | Series prefix | Chip Resistor High Power series with power-upgraded process design |
| 2512 | Package size | Imperial package code, metric size 6.35mm×3.20mm×0.55mm |
| F | Tolerance | ±1% (Class F), suitable for current limiting, voltage divider, and sampling circuits |
| 220R | Resistance | 220Ω, "R" denotes decimal point position |
| E04 | TCR & Packaging | E = ±100ppm/℃ TCR, 04 = 4000 pieces per reel standard tape packaging |
| Z | Environmental | RoHS compliant, lead-free and halogen-free process |
III. Key Parameters
| Parameter | Specification |
|---|---|
| Brand | EVER OHMS |
| Product Series | CRH High-Power Thick Film Chip Resistor |
| Package Size | 2512 (Metric 6432, 6.35mm×3.20mm×0.55mm) |
| Nominal Resistance | 220Ω (220R) |
| Tolerance | ±1% (Class F) |
| Rated Power | 2W (@70℃) |
| Temperature Coefficient (TCR) | ±100ppm/℃ |
| Maximum Operating Voltage | 200V |
| Overload Voltage | 400V |
| Operating Temperature Range | -55℃ to +155℃ |
| Substrate Material | 96% Alumina Ceramic |
| Process Technology | Thick film printing + high-temperature sintered ruthenium-based oxide resistive layer |
| Termination | Multi-layer Ni/Sn long side termination with strong SMT adhesion |
| Environmental Compliance | RoHS 2.0, REACH compliant, lead-free and halogen-free |
| Packaging | 8mm tape (7" reel), 4000 pieces/reel |
| Minimum Package Quantity | 4000 pieces |
Recommended similar products:
| Part Number | Parameter |
| CRH2512F200KE04Z | 2512 200K 2W 1% |
| CRH2512F200RE04Z | 2512 200R 2W 1% |
| CRH2512F20K0E04Z | 2512 20K 2W 1% |
| CRH2512F20R0E04Z | 2512 20R 2W 1% |
| CRH2512F220KE04Z | 2512 200K 2W 1% |
| CRH2512F220RE04Z | 2512 220R 2W 1% |
| CRH2512F22K0E04Z | 2512 22K 2W 1% |
| CRH2512F22R0E04Z | 2512 22R 2W 1% |
| CRH2512F249RE04Z | 2512 249R 2W 1% |
IV. Product Advantages
1. Doubled Power Density in Same Package
Standard 2512 thick film resistors typically offer 1W rated power at 70℃. The CRH series achieves 2W through optimized ceramic substrate thermal paths, improved thick film paste formulations, and enhanced electrode heat dissipation structures. This enables the 2512 220R 2W resistor to replace certain through-hole resistors in power management and motor drive applications, effectively reducing PCB footprint.
2. Stable Tolerance and Temperature Drift Control
The ±1% tolerance combined with ±100ppm/℃ TCR ensures controlled resistance drift across wide temperature ranges. For the 220Ω mid-resistance range, temperature drift is controlled within 0.01% per ℃.
3. Excellent Surge Handling and Reliability
The thick film process provides excellent pulse withstand capability. The CRH series features a three-layer electrode structure (Ni barrier + Sn top layer + glass overcoat) with laser precision trimming. The porous thick film structure offers good thermal shock resistance and does not easily fail under short-term overload. Select CRH series parts are AEC-Q200 qualified.
4. Wide Temperature Range Operation
The CRH series supports -55℃ to +155℃ operation with TCR as low as ±100ppm/℃, ensuring resistance drift below 0.5% under extreme conditions.
5. Cost Advantage
Compared to thin film processes, thick film technology reduces manufacturing costs by 40%-60% while maintaining automotive-grade reliability.
V. Applications
The 2512 220R 2W resistor finds wide application across multiple industries:
Switching Power Supplies (SMPS): Primary side current limiting, RC snubber networks, startup resistors. The 2W power margin handles switching current spikes.
LED Driver Power Supplies: Current sampling or voltage divider resistors in constant current drive circuits. The 220Ω resistance with ±1% tolerance minimizes current deviation and improves LED brightness consistency.
Automotive Electronics: On-board chargers (OBC), DC-DC converters, LED headlamp drive circuits. Wide temperature range and high reliability meet AEC-Q200 requirements for engine compartment environments.
Power Management & Industrial Control: AC/DC feedback voltage dividers, LED driver current limiting, general-purpose power pre-charge/discharge resistors, industrial control I/O requiring 2W power.
Communications & Computing: Communication equipment, computer-related products, power supplies, and measurement instruments.
Consumer Electronics & Home Appliances: Entertainment equipment, home appliances (air conditioners, refrigerators).
VI. Procurement and Technical Support
For samples, volume procurement, datasheets, or technical support for the CRH2512F220RE04Z (2512 220R 2W resistor), please contact:
Shenzhen Shunhai Technology Co., Ltd. — Professional electronic component distributor providing technical consultation and supply services for the complete EVER OHMS resistor product portfolio.
Huanian Mall — Authorized online distribution platform for EVER OHMS, offering online ordering, datasheet downloads, and product catalog services for the CRH2512F220RE04Z.
It is recommended to request the official datasheet from authorized distributors for final confirmation prior to procurement.
