CRH1206FR500P05Z 1206 0.5R 0.5W Current Sense Resistor: Technical Guide and Procurement Reference

Model Overview

The CRH1206FR500P05Z is a high-power thick film chip resistor manufactured by EVER OHMS (Tianer Technology), a Taiwan-based resistor specialist founded in 1988 with ISO9001 and IATF16949 certifications. The model designation decodes as follows: CRH denotes the high-power thick film series, 1206 indicates the imperial package size (3216 metric), F represents ±1% tolerance, and R500 specifies a resistance value of 0.5Ω (500mΩ).

Key Specifications

The CRH1206FR500P05Z 1206 0.5R 0.5W current sense resistor delivers 0.5W rated power in a standard 1206 footprint — twice the power handling of a conventional 1206 chip resistor. Resistance tolerance is ±1%, translating to a maximum deviation of ±5mΩ at the 0.5Ω nominal value. The temperature coefficient of resistance (TCR) is rated at ±600ppm/°C, with an operating temperature range of -55°C to +155°C. The product complies with EU RoHS Directive (2011/65/EU) and contains no REACH SVHC substances.

Application Areas

The 1206 0.5R 0.5W current sense resistor is typically deployed in switch-mode power supplies and DC-DC converters for output current monitoring, lithium battery protection boards for overcurrent detection, small motor drive circuits for closed-loop current control, and consumer appliance control boards including air conditioners and refrigerators. Its surface-mount form factor suits automated SMT assembly lines and compact PCB layouts.

Selection Considerations

Design engineers should apply a 50–70% power derating for continuous operation, corresponding to a sustained current of approximately 0.7A to 0.84A at 0.5Ω. For applications requiring tighter temperature stability, alloy-based current sense resistors with TCR in the ±50–100ppm/°C range may be considered as alternatives. Adequate PCB copper area and thermal vias are recommended to manage heat dissipation under full load conditions.

Authorized Distribution

Shenzhen Shunhai Technology Co., Ltd. has served as an official first-tier authorized distributor for EVER OHMS in mainland China since 2017, with the 2026 distributor certificate renewed and valid. The company maintains an inventory exceeding 50 million pieces and provides technical support through its FAE team.

Huanian Mall (hnstshop.com/" target="_blank" rel="noopener noreferrer">www.hnstshop.com), the online procurement platform operated by Shunhai Technology, carries the full EVER OHMS product line with traceable sourcing and complete compliance documentation, supporting both prototype sampling and volume production requirements.

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