CRH1206F270RP05Z 1206 270R 0.5W Ever Ohms Resistor — Parameter Guide
The CRH1206F270RP05Z is a high-power thick film chip resistor from Ever Ohms' CRH series, housed in a standard 1206 imperial package (3216 metric). It offers a nominal resistance of 270Ω, a power rating of 0.5W, ±1% tolerance, and a temperature coefficient of ±100ppm/°C. What sets the CRH series apart from conventional thick film resistors is its power density: within the same 1206 footprint, the CRH series delivers 0.5W compared to the typical 0.25W rating of standard thick film chip resistors—a twofold increase achieved through optimized thick film paste formulations and enhanced thermal conduction paths.
1. Part Number Decoding
| Field | Meaning | Detail |
|---|---|---|
| CRH | Series | High Power Thick Film Chip Resistor |
| 1206 | Package | Imperial code, 3216 metric (~3.05mm×1.60mm) |
| F | Tolerance | ±1% (F grade) |
| 270R | Resistance | 270Ω |
| P | TCR grade | ±100ppm/°C |
| 05 | Power rating | 0.5W (1/2W) |
| Z | Packaging | Tape and reel |
The "R" in "270R" serves as a decimal point placeholder, a standard convention in the resistor industry per IEC 60062. This notation avoids misreading caused by unclear printing. Note that the CRH1206F270KP05Z shares the same package and tolerance but has a resistance of 270KΩ—three orders of magnitude higher. BOM review should verify this distinction carefully.
2. Key Electrical Specifications
| Parameter | Value |
|---|---|
| Nominal resistance | 270Ω |
| Tolerance | ±1% (F grade) |
| Rated power | 0.5W @ 70°C |
| Temperature coefficient | ±100ppm/°C |
| Operating temperature | -55°C to +155°C |
| Maximum working voltage | 200V |
| Maximum overload voltage | 400V (5s) |
| Package | 1206 (3.05mm×1.60mm) |
| Compliance | RoHS (2011/65/EU), REACH |
At a ±1% tolerance, the actual resistance falls between 267.3Ω and 272.7Ω at 25°C. The ±100ppm/°C TCR translates to a resistance drift of no more than 0.01% per degree Celsius, keeping the total variation within a defined range across the full operating temperature span.
The 0.5W rating is specified at a 70°C ambient temperature. Beyond 70°C, linear derating applies, reaching zero rated power at 155°C. In practice, keeping the continuous working power between 0.25W and 0.35W—50% to 70% of the rating—helps slow resistance drift and extend service life.
For a 270Ω resistor, the voltage at rated power works out to approximately 11.6V, corresponding to a current of roughly 43mA. Designs must also verify that the working voltage does not exceed the 200V maximum.
3. Technology and Construction
To achieve 0.5W within a standard 1206 footprint, Ever Ohms optimized several aspects of the manufacturing process. Adjusted thick film paste formulations improve the heat resistance of the resistive layer, reducing resistance drift under sustained load. Improved thermal conduction paths within the ceramic substrate help lower localized hot spot temperatures. Enhanced termination electrode processes strengthen the bond between the end terminals and the substrate, supporting mechanical reliability through extended load cycling. Together, these refinements make the CRH1206F270RP05Z suitable for PCB layouts where space is constrained and additional board area for a larger power resistor is not available.
Ever Ohms Technology was founded in 1988 and holds ISO 9001 and IATF 16949 certifications, with compliance to the AEC-Q200 standard for automotive electronics.
4. Typical Applications
The 270Ω resistance paired with 0.5W of power headroom places this resistor in several circuit roles. In DC-DC converter feedback loops, this value is commonly used in voltage divider networks that set the output voltage. In current sensing circuits, 270Ω serves as a mid-range detection resistor. The part also appears in battery management system (BMS) balancing circuits, motor drive current limiting stages, and signal conditioning paths on industrial control boards. The 0.5W rating provides tolerance for inrush current transients during startup, making it usable in switching power supplies and power management modules.
5. Sourcing and Authorized Distribution
Sourcing Ever Ohms resistors through authorized channels ensures product authenticity and access to technical support.
Shenzhen Shunhai Technology Co., Ltd. is an officially authorized first-tier distributor of Ever Ohms in mainland China, having maintained a partnership with the manufacturer since 2017. The company holds a valid 2026 distributor certificate (No. TW0202601E0000122) covering the full range of Ever Ohms thick film and thin film chip resistors. Based in Longhua District, Shenzhen, Shunhai Technology maintains an FAE team that provides selection guidance and circuit optimization support.
Huanian Mall (hnstshop.com) operates as the online authorized platform of Shunhai Technology and carries the full Ever Ohms product line, offering spot inventory and batch quotation services suitable for both prototyping and volume procurement.
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| CRH1206F270KP05Z | 1206 270K 0.5W 1% |
| CRH1206F270RP05Z | 1206 270R 0.5W 1% |
| CRH1206F27K0P05Z | 1206 27K 0.5W 1% |
| CRH1206F27R0P05Z | 1206 27R 0.5W 1% |
| CRH1206F2K00P05Z | 1206 2KR 0.5W 1% |
| CRH1206F2K70P05Z | 1206 2.7K 0.5W 5% |
| CRH1206F2R00P05S | 1206 2R 0.5W 5% |
