CRH1206J750KP05Z 1206 Chip Resistor 750 kΩ 0.5W High Power Thick Film Chip Resistor

CRH1206J750KP05Z 1206 750K 0.5W Ever Ohms High-Power Thick-Film Chip Resistor Specification

1. Part Number Breakdown

Ever Ohms employs a straightforward part-numbering system widely recognized across the engineering community. For CRH1206J750KP05Z, each segment is interpreted as follows:

In short, this is a 1206 package, 750 kΩ, ±5%, 0.5 W high-power thick-film chip resistor.

2. Key Electrical Parameters

3. Process and Structural Features

Standard 1206 thick-film resistors are typically rated at 1/4 W (0.25 W). The CRH series doubles the power density within the same footprint through upgrades in three areas:

• Substrate: 96% alumina (Al₂O₃) ceramic offers higher thermal conductivity than conventional filled substrates, rapidly conducting heat from the resistive layer to the PCB pads and copper planes.

• Resistive Layer: Ruthenium-oxide (RuO₂-based) thick-film paste is fired at approximately 850 ℃. The layer thickness is optimized for thermal dissipation, enabling high power density.

• Terminations: Extended side terminations with anti-sulfuration design reduce localized hot-spot risk and maintain stability in sulfur-bearing atmospheres.

• Protective Coating: A glass-encapsulated overcoat seals the resistive element against moisture and corrosive gases, improving long-term environmental reliability.

4. Typical Applications for 750 kΩ

The 750 kΩ value sits in the mid-to-high resistance range and is frequently used in:

• Voltage dividers: Upper or lower arm resistor in power-supply feedback and voltage-sensing networks, paired with precision op-amps.

• Bleeder resistors: Safe discharge of residual charge in large capacitors after power-off; 750 kΩ balances discharge speed with power dissipation.

• Bias networks: Establishing stable DC operating points for transistors, MOSFETs, or op-amp inputs.

• RC timing / filtering: Combined with capacitors to form low-frequency filters or power-on delay circuits; high resistance allows smaller capacitance values for long delays.

Thanks to its 0.5 W power rating, the device maintains low surface temperature rise even under short-duration surge or elevated ambient conditions, reducing the risk of value drift or pad de-lifting.

5. Selection and Procurement Recommendations

When your circuit calls for a 1206 750K 0.5W resistor, follow these steps:

1. Review the derating curve: The CRH series requires linear derating above 70 ℃. If the equipment operates above 85 ℃ continuously, usable power falls to roughly 70% of the nominal rating—leave adequate margin.

2. Verify pad layout: Pad dimensions and thermal via count directly affect real-world heat dissipation; follow Ever Ohms' official PCB layout guidelines.

3. Small-batch validation: For first-time adoption or new platforms, run a pilot build and monitor long-term stability under actual load and temperature cycling.

For official datasheets, sample support, or volume quotations, purchase through authorized distributors. Shenzhen Shunhai Technology Co., Ltd. is a Tier-1 authorized distributor for Ever Ohms in mainland China, offering factory-direct supply, full certification documentation, and fast delivery. HuaNian Mall provides online selection, real-time inventory checks, and one-stop procurement services, enabling engineers to place orders quickly.