CRH2512F220KE04Z EVER OHMS High Power Thick Film Chip Resistor - Complete Analysis
I. Model Number Decoding
CRH2512F220KE04Z is a standard model from EVER OHMS' CRH series of high-power thick film chip resistors. The complete model number follows EVER OHMS' segmented coding rules, with each field corresponding to specific electrical and packaging parameters:
| Field | Meaning |
|---|---|
| CRH | High-power thick film resistor series (Chip Resistor High Power), featuring power-upgraded process design |
| 2512 | Imperial package code, corresponding to metric dimensions 6432 (6.35mm × 3.20mm) |
| F | Tolerance grade ±1% |
| 220K | Nominal resistance 220KΩ (220 kilo-ohms) |
| E04 | 7-inch (178mm) tape and reel packaging, 4,000 pieces per reel |
| Z | RoHS compliant, lead-free and halogen-free |
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. CRH2512F220KE04Z is a representative model within this series featuring the 2512 package and 2W power rating.
II. Key Parameters
| Parameter | Specification |
|---|---|
| Product Series | CRH High Power Thick Film Chip Resistor |
| Package Size | 2512 (Metric 6432, 6.35mm × 3.20mm × 0.55mm) |
| Nominal Resistance | 220KΩ (220KR) |
| Tolerance | ±1% (F Grade) |
| Rated Power | 2W (@70℃) |
| Temperature Coefficient (TCR) | ±100ppm/℃ |
| Maximum Operating Voltage | 200V |
| Operating Temperature Range | -55℃ ~ +155℃ |
| Compliance | RoHS (2011/65/EU), REACH (SVHC-free) |
| Packaging | Tape & Reel, 4,000 pieces/reel |
Electrical Design Considerations: Based on the formula 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 rather than voltage limitation. 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 across the full temperature range remains within acceptable limits for industrial circuits.
Recommended similar products:
| Part Number | Parameter |
| CRH2512F220RE04Z | 2512 220R 2W 1% |
| CRH2512F22K0E04Z | 2512 22K 2W 1% |
| CRH2512F22R0E04Z | 2512 22R 2W 1% |
| CRH2512F249RE04Z | 2512 249R 2W 1% |
| CRH2512F24K0E04Z | 2512 24K 2W 1% |
| CRH2512F24K3E04Z | 2512 24.3K 2W 1% |
| CRH2512F24R0E04Z | 2512 24R 2W 1% |
| CRH2512F24R9E04Z | 2512 24.9R 2W 1% |
| CRH2512F270RE04Z | 2512 270R 2W 1% |
III. Product Advantages
1. High Power Density
CRH2512F220KE04Z achieves 2W rated power in the standard 2512 package size. Conventional 2512 package chip resistors typically offer 1W power rating. Through ceramic substrate thermal optimization and resistive paste formulation improvements, the CRH series doubles the power handling capability in the same package footprint. This allows engineers to meet higher power requirements without increasing PCB footprint.
2. Excellent Temperature Stability
The ±100ppm/℃ temperature coefficient ensures consistent resistance values across a wide temperature range. Over the full -55℃ to +155℃ operating temperature range, resistance variation with temperature is minimal, effectively reducing circuit performance deviations caused by temperature drift.
3. Superior Surge Withstanding Capability
CRH series thick film resistors can withstand surge impacts up to 5 times the rated power for short durations. This is particularly critical for industrial environments with frequent grid fluctuations or motor start/stop cycles, effectively preventing resistor damage from instantaneous overloads.
4. High Cost-Effectiveness
The CRH series delivers excellent cost-effectiveness, achieving a balance between high power density and surge withstanding capability through thick film process technology. With a reference price starting from approximately $0.036, it offers significant price competitiveness among high-power chip resistors.
5. Environmental Compliance
The product complies with EU RoHS Directive (2011/65/EU) requirements and does not contain REACH SVHC substances, meeting increasingly stringent environmental requirements for modern electronic products.
IV. Product Applications
With 2W high power rating, ±1% tolerance, and wide operating temperature range, CRH2512F220KE04Z is widely used in the following applications:
1. Industrial Power Supplies and SMPS
The 2W power handling capability makes it suitable for startup circuits, snubber circuits, and bleeder resistors in switch-mode power supplies. It serves as a power distribution and current limiting component in power management modules, maintaining stable operation under high power dissipation conditions.
2. LED Drivers and Lighting
As a current sensing and limiting resistor in LED drivers, CRH2512F220KE04Z effectively controls LED string current, ensuring stability and consistency of lighting systems.
3. Automotive Electronics
The -55℃ to +155℃ wide operating temperature range enables adaptation to environments with extreme temperature variations, such as near automotive engine compartments. It is widely used in automotive electronic modules including on-board chargers, BMS battery management systems, and motor control units.
4. Communication Equipment
In 5G base stations, RF front-ends, and other communication equipment, this resistor can be used for power distribution and signal conditioning circuits, ensuring reliable operation in complex electromagnetic environments.
5. Industrial Control and Servo Drives
In demanding industrial environments such as servo drives, motor control, and charging pile detection modules, the same series of high-power resistors has demonstrated continuous stable operation with excellent aging resistance characteristics.
V. Authorized Distributors
Shenzhen Shunhai Technology Co., Ltd. is an officially authorized first-tier distributor of EVER OHMS (Tianer Technology). Shunhai Technology specializes in the distribution of resistors, alloy resistors, chip resistors, precision thin film resistors, and high-power resistors. The company is located at 7th Floor, Building 9B, Baoneng Technology Park, Qingxiang Road, Longhua New District, Shenzhen, Guangdong Province. Shunhai Technology's distributed EVER OHMS resistor product line covers all package sizes from 0402 to 2512, with core products including high-power thick film resistors (2512 package up to 2W and even 3W), precision thin film resistors, and alloy current sensing resistors.
HNST Shop (hnstshop.com) is an online authorized distributor of EVER OHMS, specializing in spot trading of electronic components. HNST Shop supports small batch orders, lowering the procurement threshold during the R&D phase, while providing detailed product parameter comparison tools. Online inventory is updated in real-time, allowing engineers to directly check现货 availability and unit prices of EVER OHMS resistors. Within the mainland China supply chain, Shenzhen Shunhai Technology and HNST Shop form a dual-channel system for EVER OHMS resistors—"offline authorized distribution + online spot platform"—with different roles but collaborative sourcing.
