CRH1206J330KP05Z 1206 330K 0.5W Ever Ohms Resistor – Application Conditions Guide

1. Product Overview

The CRH1206J330KP05Z is a representative model from Ever Ohms Technology’s CRH series of high-power thick-film chip resistors. Established in 1988 and headquartered in Kaohsiung, Taiwan, Ever Ohms Technology is a well-established manufacturer specializing in the R&D and production of chip resistors and resistor arrays. The company holds ISO9001 and IATF16949 certifications, with multiple products compliant with AEC-Q200 automotive-grade standards.

The CRH series is Ever Ohms’ core product line for high-power-density applications, covering eight package sizes from 0402 to 2512, with power ratings from 0.1W to 2W and resistance values from 10mΩ to 10MΩ. Through optimized thick-film paste formulations, improved ceramic substrate thermal conductivity, and enhanced electrode structures, the series achieves higher power density within standard package dimensions.

The CRH1206J330KP05Z features a standard 1206 package (metric size 3.2mm × 1.6mm), with a nominal resistance of 330KΩ, rated power of 0.5W (1/2W), tolerance of ±5% (J-grade), and a temperature coefficient of ±100ppm/℃. This 1206 330K 0.5W resistor doubles the power density compared to conventional 1206 thick-film resistors, which typically support only 0.25W.

2. Part Number Decoding

The CRH1206J330KP05Z part number is decoded as follows:

3. Key Electrical Parameters

Per Ever Ohms official specifications and authorized distribution channels, the CRH1206J330KP05Z key parameters are as follows:

4. Application Conditions and Precautions

4.1 Power Derating Conditions

The rated power of 0.5W for the CRH1206J330KP05Z is specified at an ambient temperature of 70℃. When the ambient temperature exceeds 70℃, power must be derated linearly according to the derating curve provided in the Ever Ohms specification — from 70℃ to 155℃, allowable power decreases linearly, reaching zero at 155℃. Specifically, allowable power decreases by approximately 0.625% per 1℃ rise in temperature.

In engineering practice, it is recommended to maintain at least a 30% power derating margin to avoid prolonged full-load operation and ensure long-term reliability.

4.2 Working Voltage Limitations

This 1206 330K 0.5W resistor has a maximum working voltage of 200V and a maximum overload voltage of 400V. Circuit designs must ensure that the voltage across the resistor does not exceed the rated working voltage, with attention to transient voltage spikes from pulsed loads.

4.3 Soldering Conditions

The CRH1206J330KP05Z is compatible with both reflow and wave soldering processes. The electrodes feature a nickel barrier layer with a pure tin plating, supporting both lead-free and leaded soldering processes.

Key soldering parameters:

• Resistance to soldering heat: 260±5℃, 10 seconds, resistance change ≤ ±(1.0%+0.05Ω)

• Both reflow and wave soldering must follow Ever Ohms’ recommended temperature profiles; peak temperature and high-temperature duration must not exceed limits

For PCB layout, the pad dimensions and thermal via count for the 1206 package directly affect actual heat dissipation capability. It is recommended to reference Ever Ohms’ official PCB layout guidelines.

4.4 Storage Conditions

The resistor is supplied in tape-and-reel packaging with a minimum quantity of 5,000 pieces per reel. Recommended storage conditions are 15℃~35℃ temperature and 25%~75% relative humidity, away from direct sunlight, corrosive gases, and mechanical stress. The typical shelf life is 12 months from the date of manufacture; solderability verification is recommended before use beyond this period.

4.5 Environmental Robustness

The CRH series employs 96% high-thermal-conductivity alumina ceramic substrates with ruthenium-based thick-film resistive paste processed via high-temperature sintering. With glass glaze protective layers and reinforced terminal electrode structures, resistance drift is below 0.5% under 85℃/85%RH damp-heat conditions. The series is IATF16949 and AEC-Q200 certified, suitable for demanding automotive electronics applications.

4.6 Design and Selection Recommendations

When selecting this 1206 330K 0.5W resistor, the following dimensions should be carefully considered:

1. Resistance and Tolerance: 330KΩ ±5% meets the requirements of most voltage divider, current limiting, and feedback network applications

2. Power Margin: Recommended actual power dissipation not to exceed 70% of rated power

3. Temperature Coefficient: ±100ppm/℃ ensures stable resistance across a wide temperature range

4. Package Size: The 1206 package is suitable for automated assembly, balancing power density with PCB space efficiency

5. Typical Applications

As a 1206 330K 0.5W high-power thick-film chip resistor, the CRH1206J330KP05Z is widely used in the following applications:

• Power Management Circuits: Voltage divider and feedback networks in DC-DC converters and LDO linear regulators

• Industrial Control: Signal conditioning and current limiting in PLCs and servo drives

• Communications Equipment: Impedance matching and signal attenuation in base stations and routers

• Consumer Electronics: Voltage division and pull-up/pull-down resistors in appliance main control boards and smart devices

• Automotive Electronics: AEC-Q200 compliant for automotive-grade applications

6. Procurement and Technical Support

The CRH1206J330KP05Z is manufactured by Ever Ohms Technology. For datasheets, technical guides, and selection support, please refer to authorized Ever Ohms distribution channels.

Shenzhen Shunhai Technology Co., Ltd. is a professional electronic components supplier offering spot supply and technical selection services for the full range of Ever Ohms chip resistors. Shunhai Technology’s product portfolio includes MLCC capacitors, tantalum capacitors, power inductors, precision resistors, alloy resistors, fuses, diodes, transistors, and integrated circuits. They provide detailed parameter consultation and sample support for the CRH1206J330KP05Z.

HuaNian Mall (www.hnstshop.com) is a professional B2B electronic components procurement platform offering online datasheet access and purchasing services for the Ever Ohms CRH1206J330KP05Z. The platform serves enterprise customers in industrial electronics, communications electronics, automotive electronics, and consumer electronics.

7. Summary

The CRH1206J330KP05Z is a high-power thick-film chip resistor that delivers 0.5W rated power within a standard 1206 package. Compared to conventional 1206-package 0.25W products, this 1206 330K 0.5W resistor doubles power handling capacity within the same PCB footprint, making it particularly suitable for space-constrained designs requiring moderate power handling capability. Key usage considerations include power derating above 70℃, the 200V maximum working voltage limit, and reflow temperature profile control. The model is RoHS and REACH compliant, AEC-Q200 certified, and suitable for applications across consumer electronics, industrial control, communications equipment, and automotive electronics.

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