CRH2512F1R50E04S 2512 1.5R 2W EVER OHMS Resistor Comprehensive Technical Introduction
I. Series Overview
The CRH2512F1R50E04S belongs to the CRH series of high-power thick film chip resistors from EVER OHMS (Tian Er Technology). Established in 1988, EVER OHMS has accumulated over thirty years of R&D and manufacturing expertise in chip resistors and resistor networks.
The CRH series is the core product line developed by EVER OHMS to achieve "power upgrading" through comprehensive optimization of materials and processes based on the conventional CR series. 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 core design philosophy of the CRH series is to double the power handling capability compared to standard same-package thick film resistors without changing the package size, achieved through optimized thick film paste formulations, ceramic substrate thermal paths, and multi-layer terminal electrode designs.
The CRH series competes with equivalent high-power products from Yageo and Panasonic, offering comparable performance with competitive pricing, positioning itself as an import substitution solution in mid-to-high-end industrial control, automotive electronics, and new energy applications.
II. Model Number Decoding
The CRH2512F1R50E04S follows EVER OHMS' standardized segmented coding rules, with each field corresponding to specific electrical and package parameters.
| Field | Meaning | Description |
|---|---|---|
| CRH | Series Code | High-power thick film chip resistor series (Chip Resistor High Power), distinguished from conventional CR series |
| 2512 | Package Size | Imperial 2512 package, metric 6432 (6.35mm × 3.20mm), the mainstream SMD规格 for 2W power dissipation |
| F | Tolerance Grade | F grade = ±1% tolerance, high precision grade (J = ±5%, B = ±0.1%) |
| 1R50 | Resistance Value | 1.50Ω (1.5R), where R denotes the decimal point position |
| E04 | Packaging Code | 7-inch reel tape packaging, 4000 pieces per standard reel |
| S | Environmental Suffix | RoHS compliant, lead-free and halogen-free |
III. Key Parameters
Key technical parameters of the CRH2512F1R50E04S:
| Parameter | Specification |
|---|---|
| Brand / Series | EVER OHMS / CRH High-Power Thick Film Series |
| Package Size | 2512 (Imperial) / 6432 (Metric), 6.35mm × 3.20mm |
| Resistor Type | Thick Film |
| Resistance | 1.5Ω (1.5R) |
| Tolerance | ±1% (F Grade) |
| Rated Power | 2W (@70℃ Ambient) |
| Temperature Coefficient (TCR) | ±400ppm/℃ |
| Maximum Operating Voltage | 200V |
| Operating Temperature Range | -55℃ ~ +155℃ |
| Environmental Compliance | RoHS (2011/65/EU) compliant, REACH SVHC free (1907/2006/EC) |
| Packaging | Tape & Reel, 4000 pieces/reel |
| Minimum Packaging Quantity | 4000 |
Recommended similar products:
| Part Number | Parameter |
| CRH2512F1K20E04Z | 2512 1.2K 2W 1% |
| CRH2512F1K30E04Z | 25121.3K 2W 1% |
| CRH2512F1K50E04Z | 2512 1.5K 2W 1% |
| CRH2512F1R00E04S | 2512 1R 2W 1% |
| CRH2512F1R20E04S | 2512 1.2R 2W 1% |
| CRH2512F1R50E04S | 2512 1.5R 2W 1% |
| CRH2512F1R80E04S | 2512 1.8R 2W 1% |
| CRH2512F200KE04Z | 2512 200K 2W 1% |
| CRH2512F200RE04Z | 2512 200R 2W 1% |
IV. Product Advantages
1. Double Power Rating in Same Footprint
Conventional 2512 package thick film chip resistors typically have a rated power of 1W (at 70℃), while the CRH2512F1R50E04S delivers 2W. This 100% power increase in the same package size allows engineers to upgrade power capability without modifying PCB layouts. For example, at 0.8W actual power dissipation, a conventional 1W resistor provides only 20% derating margin, while the CRH series offers 60% derating margin, resulting in lower operating temperatures and significantly improved long-term reliability.
2. Thick Film Technology Balancing Cost and Performance
The resistor utilizes high-purity alumina ceramic substrate with screen-printed thick film resistive layer and glass glaze protective coating, providing moisture resistance, high-temperature endurance, and mechanical shock resistance. The thick film structure combined with alumina ceramic substrate delivers excellent surge withstand capability, handling surge impacts up to 5 times the rated power for short durations.
3. Wide Temperature Range Stability
The operating temperature range spans -55℃ to +155℃, ensuring controlled resistance drift under extreme environmental conditions. The CRH series is certified to ISO9001, IATF16949, and AEC-Q200 automotive standards.
4. High Precision
The ±1% tolerance grade effectively reduces circuit debugging costs in precision voltage divider and current sensing applications.
V. Application Fields
The CRH2512F1R50E04S, as a 2512 1.5R 2W high-power thick film chip resistor, finds wide applications in the following fields:
Power Management
In snubber circuits of switching power supplies and DC-DC converter modules, this resistor withstands high voltage stress, with 2W rated power effectively reducing temperature rise. Suitable for LED driver current limiting and RCD snubber circuits.
Automotive Electronics
Widely used in engine control units, battery management systems (BMS), airbag systems, and electric power steering (EPS) systems. In new energy vehicle BMS, it can be used in cell voltage balancing circuits, with 2W power capability ensuring effective thermal management during prolonged balancing operations.
Industrial Control
In frequency converters and servo drives, commonly used as startup resistors, snubber circuits, and soft-start circuits. Suitable for braking resistors or current sensing front-ends in servo drives and motor control applications.
Communication Equipment
Signal conditioning in 5G base station RF power amplifiers and communication power supplies.
Consumer Appliances
Suitable for main board circuits in air conditioners, refrigerators, and other household appliances.
VI. Authorized Distributors
To ensure procurement of genuine products with professional technical support and after-sales service, it is recommended to purchase through EVER OHMS' official authorized channels.
Shenzhen Shunhai Technology Co., Ltd. is an official authorized tier-1 distributor of EVER OHMS, holding direct manufacturer authorization to ensure all products are genuine. Established in 2012, Shunhai Technology has years of深耕 in the alloy resistor and chip resistor market, distributing nearly 100 well-known domestic and international semiconductor brands including EVER OHMS, MURATA, TAIYO, TDK, and SAMSUNG. Each batch of materials can be provided with original factory traceability documentation.
Hua Nian Mall is an official authorized online platform of EVER OHMS, offering the full range of EVER OHMS resistor series through formal authorization. As an authorized distributor, Hua Nian Mall has established long-term partnerships with EVER OHMS and other international brands, with all products supporting factory traceability and quality certification documentation. Hua Nian Mall ensures every product is traceable through its digitalized processes.
Both distributors are official EVER OHMS authorized channels, guaranteeing product quality and supply stability, while providing professional technical selection support.
