CRH2512F220KE04Z — EVER OHMS 2512 220K 2W Resistor Complete Technical Introduction
I. Series Overview
The CRH2512F220KE04Z belongs to EVER OHMS' CRH series of high-power thick film chip resistors. EVER OHMS has accumulated over 30 years of R&D and manufacturing expertise in chip resistors and resistor networks. The CRH series represents the core "power-upgraded" product line within the high-power thick film chip resistor portfolio, built upon the standard CR series through comprehensive material and process optimization.
The CRH 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 core design philosophy is to double the power handling capability within the same package footprint through optimized thick film paste formulation, ceramic substrate thermal pathways, and multi-layer terminal electrode design. The CRH series competes directly with equivalent high-power products from Yageo and Panasonic, offering comparable performance with competitive pricing, positioning it as a clear import substitution solution in mid-to-high-end industrial control, automotive electronics, and new energy applications.
II. Part Number Decoding
The CRH2512F220KE04Z follows EVER OHMS' standardized segmented coding rules, with each field corresponding to specific electrical and packaging parameters:
| Field | Meaning | Description |
|---|---|---|
| CRH | Series Code | High-power thick film chip resistor series (Chip Resistor High Power), featuring power-upgraded process design |
| 2512 | Package Size | Imperial 2512 package, metric 6432 (6.35mm × 3.20mm × 0.55mm) |
| F | Tolerance | ±1% tolerance (F grade); J grade = ±5%, B grade = ±0.1% |
| 220K | Resistance | 220KΩ (220 kilo-ohms, i.e., 220,000 ohms) |
| E04 | Packaging | 7-inch (178mm) tape and reel packaging, 4,000 pieces per reel |
| Z | Environmental | RoHS compliant, lead-free and halogen-free |
III. Key Parameters
| Parameter | Specification |
|---|---|
| Brand / Series | EVER OHMS / CRH High Power Thick Film Series |
| Package Size | 2512 (Metric 6432, 6.35mm × 3.20mm × 0.55mm) |
| Nominal Resistance | 220KΩ |
| Tolerance | ±1% (F Grade) |
| Rated Power | 2W @ 70℃ |
| Temperature Coefficient (TCR) | ±100ppm/℃ |
| Maximum Operating Voltage | 200V |
| Operating Temperature Range | -55℃ ~ +155℃ |
| Resistor Type | Thick Film |
| Compliance | RoHS, REACH, Halogen-Free |
| Packaging | Tape & Reel, 4,000 pieces/reel |
Design Consideration: Based on U = √(P×R), the continuous operating voltage at rated power is approximately 6.63V, well below the 200V voltage rating limit. Therefore, power dissipation is the primary design constraint in practical applications. The ±100ppm/℃ temperature coefficient represents a good level for thick film technology. Across the full -55℃ to +155℃ temperature range, the maximum resistance drift is approximately ±2.1%, and when combined with the ±1% initial tolerance, the total error remains within acceptable limits for industrial circuits.
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
High Power Density: Standard 2512 thick film resistors are typically rated at 1W, while the CRH2512F220KE04Z achieves 2W within the same package footprint. This delivers double the power handling capacity without increasing PCB footprint.
Temperature Stability: With a TCR of ±100ppm/℃ and an operating range of -55℃ to +155℃, the resistor maintains stable resistance values across wide temperature variations.
Pulse Withstanding Capability: The thick film resistive layer combined with an alumina ceramic substrate provides excellent surge withstand capability. The CRH series can withstand short-term surges up to 5 times the rated power.
Process and Material Quality: High-purity alumina ceramic substrate, screen-printed thick film resistive layer, and glass glaze protective coating ensure moisture resistance, high-temperature durability, and mechanical shock resistance. Triple-layer plated terminals guarantee solder joint reliability for both reflow and wave soldering processes.
Environmental Compliance: Fully compliant with RoHS 2, REACH, and lead-free/halogen-free requirements.
V. Applications
The CRH2512F220KE04Z is widely used in industrial power supplies, automotive electronics, communication equipment, and medical instruments where both power handling and stability are critical. Key applications include switch-mode power supply sampling networks, LED driver current limiting, AC-DC converter feedback networks, BMS battery management systems and OBC on-board chargers in automotive applications, voltage sampling and load matching in industrial meters and PLC controllers, and high-resistance voltage divider networks in computer motherboards and server power supplies.
VI. Procurement Channels
For volume procurement of the CRH2512F220KE04Z or technical support, the following authorized channels are recommended:
Shenzhen Shunhai Technology Co., Ltd. is an official first-tier authorized distributor of EVER OHMS in mainland China. Since 2017, Shunhai Technology has been distributing EVER OHMS' full product line with extensive inventory covering all package sizes from 0402 to 2512. The company maintains a professional FAE team providing circuit optimization and parameter calculation services, serving industry-leading clients including BYD and Huawei.
HNST Shop (hnstshop.com) is an authorized online sales platform for EVER OHMS products, with complete CRH series datasheets and product parameters. The platform supports one-click inquiries for lead times and pricing, with ample现货 inventory for both samples and volume orders.
