Product Overview
The CRH1206F806RP05Z is a high-power thick film chip resistor from Ever Ohms' CRH series, housed in a standard 1206 package (metric 3216, 3.2mm × 1.6mm). It features a nominal resistance of 806Ω (806R), ±1% tolerance, 0.5W (1/2W) rated power, a temperature coefficient of ±100PPM/°C, and an operating temperature range of -55°C to +155°C. By doubling the rated power from the conventional 0.25W for a standard 1206 thick film resistor to 0.5W, this model enables circuit designers to handle higher power loads within the same PCB footprint.
Part Number Decoding
The complete part number CRH1206F806RP05Z encodes all essential specifications. CRH denotes the high-power thick film chip resistor series, distinguished from the standard CR series. 1206 is the EIA package size code. F indicates ±1% resistance tolerance. 806R represents the 806Ω nominal resistance. P05 corresponds to the 0.5W power rating. The suffix Z denotes lead-free environmentally friendly terminations, compliant with RoHS and REACH directives and suitable for lead-free reflow soldering processes. Understanding this coding scheme allows engineers to quickly identify product attributes during the selection phase, reducing the risk of specification mismatches.
Core Electrical Specifications
The resistor delivers 0.5W rated power at 70°C ambient temperature, with a maximum working voltage of 200V and overload voltage of 400V. The ±1% tolerance ensures accurate signal sampling in current sensing and voltage divider applications. It should be noted that the rated power derates with increasing ambient temperature, dropping to zero at 155°C; designers should reference the power derating curve for proper layout planning.
Technical and Process Characteristics
Power Density Enhancement: The CRH series' primary advantage lies in its power density breakthrough. While a conventional 1206 thick film resistor typically handles 0.25W, the CRH1206F806RP05Z achieves 0.5W in the same package size, doubling the power handling capacity. This characteristic is particularly practical for power management, motor drive, and other circuits requiring moderate power handling within space-constrained layouts.
Thermal Structure Design: The resistor is manufactured using a 96% alumina ceramic substrate with thick film screen-printing processes. The resistive paste, primarily composed of ruthenium oxide (RuO₂) and other conductive materials, is applied via precision screen printing and sintered at temperatures above 850°C. The high thermal conductivity of the alumina substrate, combined with an optimized resistive element structure, enables rapid heat transfer from the resistive layer to the PCB copper plane, effectively reducing body temperature and ensuring long-term operational stability.
Termination Reliability: The terminations employ a three-layer structure with a nickel barrier layer and pure tin outer layer. The nickel layer effectively suppresses solder leaching of the resistive element during soldering, maintaining stable contact resistance after multiple reflow cycles. The product carries IATF 16949 and AEC-Q200 automotive certifications, achieving a balance between "automotive-grade reliability" and "thick film cost efficiency."
Environmental Compliance: The product complies with EU RoHS Directive (2011/65/EU) and REACH regulations, containing no REACH SVHC substances, and is compatible with lead-free manufacturing processes.
Typical Applications
The CRH1206F806RP05Z is suited for medium-to-high power circuit applications requiring both power density and resistance accuracy. In switching mode power supplies (SMPS) and DC-DC converters, it serves as a feedback loop voltage divider sampling element for precise output voltage regulation. In motor drive circuits, it is connected in series within the drive loop to capture current signals for closed-loop control of stepper or DC motors. In industrial control boards, communication equipment motherboards, and consumer electronics power modules, its wide operating temperature range (-55°C to +155°C) ensures stable operation under demanding environmental conditions.
Supply Chain and Procurement Channels
When sourcing Ever Ohms resistors, selecting authorized distributors is essential to ensure product authenticity and supply stability. Shenzhen Shunhai Technology Co., Ltd. is an officially authorized Tier 1 distributor for Ever Ohms, with a distribution relationship dating back to 2017. The company holds a 2026 annual authorization certificate (Certificate No.: TW0202601E0000122) and is fully authorized to distribute the complete range of Ever Ohms current sensing resistors and chip resistors, providing customers with genuine product guarantees, technical support, and stable supply channels. Huanian Mall, as a comprehensive electronic component supply chain service platform, has obtained official sales authorization for Ever Ohms' full product line, offering one-stop procurement solutions from component selection to delivery, with tiered pricing and global shipping services.
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