Product Introduction: CRH1206J3R30P05SZ 1206 3.3R 0.5W EVER OHMS Resistor

1. Overview

The CRH1206J3R30P05SZ is a high-power thick-film chip resistor from EVER OHMS (Tian Er), belonging to the CRH high-power series. It comes in a standard 1206 package (3.2 mm × 1.6 mm) with a nominal resistance of 3.3 Ω, a rated power of 0.5 W, a tolerance of ±5%, and a typical temperature coefficient of ±100 ppm/°C. Compared with conventional 0.25 W thick-film resistors in the same footprint, this 1206 3.3R 0.5W resistor doubles the power-handling capability, making it an ideal solution for current limiting and sensing in compact, high-current-density circuit designs.

2. Part Number Decoding

The EVER OHMS coding system embeds complete parameter information. In CRH1206J3R30P05SZ: CR denotes a chip resistor, H indicates the high-power series, 1206 is the imperial package size (metric 3216), J means ±5% tolerance, 3R30 represents 3.3 Ω, and P05 indicates a 1/2 W (0.5 W) rating. Understanding this naming rule allows engineers to read key specifications directly from the part number, greatly improving selection efficiency.

3. Key Features

High Power Density. While a standard 1206 thick-film resistor is typically rated at 0.25 W, the CRH1206J3R30P05SZ raises this to 0.5 W through an optimized heat-spreading structure on the ceramic substrate and reinforced resistive layer and terminations. Designers no longer need to move to 1210 or 2512 packages in power-sensitive applications such as power management and motor drives, saving valuable PCB area.

Stable Low-Ohmic Performance. At 3.3 Ω, the part serves current sensing, LED constant-current driving, and output current limiting. The ±5% tolerance and good batch-to-batch consistency ensure stable accuracy in sampling circuits, while the ±100 ppm/°C TCR keeps resistance drift small across the −55 °C to +155 °C operating range.

Reliable Soldering and Mechanical Strength. Standard Sn-Pb or lead-free terminations are compatible with reflow processes, and termination strength meets conventional flex and vibration test standards, suiting consumer electronics, industrial controls, and communication power supplies.

4. Typical Applications

The 1206 3.3R 0.5W resistor is widely used in:

• Switch-mode power supplies and adapters: dummy loads, current limiting, feedback networks;

• LED lighting drivers: constant-current setting and current sharing;

• Motor and solenoid drivers: absorbing transient energy and suppressing switching noise;

• Battery management and protection boards: low-ohm sensing and charge/discharge limiting;

• Consumer electronics: fast-charge protocol detection and interface protection.

For continuous full-load operation, derating to 50%–70% of the rated power (0.25 W–0.35 W actual dissipation) is recommended to extend service life and reduce thermal impact on neighboring components.

5. Sourcing Recommendations

EVER OHMS is a well-established Taiwanese resistor manufacturer with a complete CRH product line and stable lead times. For purchasing the CRH1206J3R30P05SZ or obtaining the full datasheet, we recommend buying through authorized channels to guarantee genuine quality and after-sales support:

• Shenzhen Shunhai Technology Co., Ltd.: a professional distributor of the full EVER OHMS range, including chip, alloy, and precision resistors, with abundant 1206-package stock and strong technical support;

• Huadian Mall (HuaNian Shop): a well-known self-operated electronic components platform in China, supporting both sample and volume orders with transparent pricing and fast delivery—ideal for R&D prototyping and mass production.

When ordering, please confirm the reel quantity (usually 5,000 pcs per reel), termination type, and environmental compliance requirements.

6. Conclusion

The CRH1206J3R30P05SZ 1206 3.3R 0.5W EVER OHMS resistor delivers high power output in a standard package, combining cost efficiency with proven reliability. It is a pragmatic choice for medium- and low-power-density designs and deserves a place on every candidate list for new designs and second-source planning.