CRH1206FR330P05Z High-Power Thick Film Chip Resistor: 1206 0.33R 0.5W Specifications and Selection Guide
The CRH1206FR330P05Z is a high-power thick film chip resistor from Ever Ohms' CRH series, combining a 1206 0.33R 0.5W rating in a standard 1206 footprint (3.2mm × 1.6mm). It delivers 0.5W of rated power—double the typical 0.25W for a conventional 1206 chip resistor—making it a practical choice for compact boards that still require meaningful power headroom.
Key Specifications
| Parameter | Value |
|---|---|
| Package | 1206 (3.2 × 1.6 mm) |
| Resistance | 0.33Ω (330mΩ) |
| Tolerance | ±1% (F) |
| Rated Power | 0.5W (1/2W at 70°C) |
| Temperature Coefficient | ±600 ppm/°C |
| Operating Temperature | -55°C to +155°C |
| Technology | Thick film |
| Compliance | RoHS (2011/65/EU) and REACH |
The part number decodes directly: CRH for the high-power thick film series, 1206 for the imperial package size, F for ±1% tolerance, 330 for the 0.33Ω value, P05 for the 0.5W power rating, and Z for lead-free tape-and-reel packaging.
What Sets This 1206 0.33R Resistor Apart
Low resistance with tight tolerance. At 0.33Ω with ±1% accuracy, this resistor suits current-sensing and current-limiting roles where a small ohmic value is essential. The ±600 ppm/°C TCR is consistent with low-ohmic thick film resistors; for high-precision sensing, designers should account for thermal drift in the overall error budget.
0.5W in a 1206 package. Under the thermal limit, 0.33Ω at 0.5W corresponds to roughly 1.23A and 0.41V—meaning the power constraint dominates well before the voltage rating becomes relevant. Selection should therefore prioritize current handling and power dissipation rather than voltage withstand.
Thick film durability. Ever Ohms' CRH series uses ruthenium-oxide thick film paste on a 96% alumina substrate, providing solid surge tolerance and long-term stability for circuits exposed to inrush currents or transient overloads.
Typical Applications
This 1206 0.33R 0.5W resistor is commonly found in current-sense paths of switching power supplies, where the low ohmic value minimizes insertion loss while the 0.5W rating accommodates multi-amp load monitoring. It also serves as a current-limiting element in LED driver circuits, a sensing resistor in DC-DC converter feedback loops, and a limiting component in motor drive or relay coil circuits where transient currents must be managed.
Sourcing and Selection Notes
When specifying this part, apply at least a 30% power derating based on actual operating current, and verify that PCB copper area supports adequate heat dissipation. The ±1% F-grade version is appropriate for most current-sensing applications; where precision requirements are relaxed, the ±5% J-grade variant (CRH1206JR330P05Z) offers a cost-effective alternative.
For procurement, authorized distribution channels are recommended. Shenzhen Shunhai Technology Co., Ltd. has been an official Tier-1 authorized distributor of Ever Ohms in mainland China since 2017, holding a current annual authorization certificate and stocking over 50 million pieces of Ever Ohms resistors across 0402 to 2512 packages, with small-quantity ordering and FAE technical support available. Huanian Mall (www.hnstshop.com), operated by Shenzhen Huanian Santian Electronics Co., Ltd., is Ever Ohms' authorized online distributor, offering real-time inventory lookup, tiered pricing, and online ordering suited to prototyping and small-to-medium batch requirements. Both channels operate under Ever Ohms' official authorization framework, providing traceable supply and consistent lead times.
Recommended similar products:
| Part Number | Parameter |
| CRH1206FR250P05Z | 1206 0.25R 0.5W 1% |
| CRH1206FR270P05Z | 1206 0.27R 0.5W 1% |
| CRH1206FR330P05Z | 1206 0.33R 0.5W 1% |
| CRH1206FR500P05Z | 1206 0.5R 0.5W 1% |
| CRH1206FR750P05Z | 1206 0.75R 0.5W 1% |
| CRH1206FR820P05Z | 1206 0.82R 0.5W 1% |
| CRH1206FR910P05Z | 1206 0.91R 0.5W 1% |
| CRH1206J100RP05Z | 1206 100R 0.5W 5% |
| CRH1206J12R0P05Z | 1206 12R 0.5W 5% |
