CRH2512F22K0E04Z 2512 22 kΩ 2 W ±1% Tolerance High Power Thick Film Chip Resistor
22 kΩ High Power Thick Film Chip Resistor
,2 W 2512 Chip Resistor
,±1% Tolerance CRH Series Resistor
CRH2512F22K0E04Z 2512 22K 2W Ever Ohms High-Power Thick Film Chip Resistor Technical Overview
1. Part Number Breakdown
CRH2512F22K0E04Z follows Ever Ohms' standard nomenclature for high-power thick film chip resistors:
| Field | Meaning |
|---|---|
| CRH | High-Power Thick Film Chip Resistor series |
| 2512 | Package size 6.4 mm × 3.2 mm |
| F | Resistance tolerance ±1% |
| 22K0 | Nominal resistance 22 kΩ |
| E04 | Temperature coefficient ±100 ppm/℃ |
| Z | Tape & reel packaging |
2. Key Electrical Parameters
| Parameter | Value |
|---|---|
| Resistance | 22 kΩ |
| Tolerance | ±1% |
| Rated Power | 2 W (@70℃) |
| Max. Working Voltage | 200 V |
| TCR | ±100 ppm/℃ |
| Operating Temperature | −55 ℃ ~ +155 ℃ |
| Package | 2512 (6.4 mm × 3.2 mm) |
| Type | Thick film |
| Packaging | Tape & reel |
At 70 ℃ ambient, the resistor delivers its full 2 W rating. Beyond 70 ℃, linear derating applies until power reaches zero at 155 ℃. For a 22 kΩ part, the theoretical voltage at rated power is approximately 209.8 V, which sits close to the 200 V maximum working voltage. Designers must treat the voltage limit as the governing constraint in high-impedance applications.
3. Product Advantages
The CRH series 2512 22K 2W resistor is built on an alumina ceramic substrate with a thick-film resistive element, glass overcoat, and three-layer termination (Ag / Ni / Sn). This construction offers:
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Large heat dissipation area: The 2512 footprint provides greater surface area and solder pad contact than 1206 or 2010 packages, enabling 2 W power handling in a surface-mount form factor.
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Excellent solderability: The plated termination ensures reliable wetting during reflow and wave soldering, with high post-solder mechanical strength.
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Stable resistance: Laser-trimmed thick-film elements exhibit tight distribution and low drift under long-term load.
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Wide environmental range: The −55 ℃ to +155 ℃ operating window suits outdoor, automotive, and industrial control environments.
4. Typical Applications
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SMPS feedback networks: Used as upper or lower divider resistors in AC-DC and DC-DC converters, where 2 W margin absorbs start-up surge and light-load stress.
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LED driver current setting: 22 kΩ values set dimming curves or protection thresholds in high-power LED constant-current drivers.
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Industrial automation interfaces: PLC, inverter, and servo analog input ports employ 2512 22K 2W resistors for voltage division and current limiting.
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Home appliance control boards: Air-conditioner outdoor units, refrigerator compressor drives, and washing-machine inverter boards use this part for power filtering and MCU pull-ups.
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Telecom power modules: Routers, switches, and base-station power supplies rely on its wide-temperature stability in enclosed or outdoor cabinets.
5. Procurement and Technical Support
For datasheets, derating curves, and reliability reports of CRH2512F22K0E04Z, purchase through authorized distributors. Shenzhen Shunhai Technology Co., Ltd. and HuaNian Mall both stock the full Ever Ohms chip resistor line, offering real-time inventory, sample requests, and BOM consolidation services.
6. Design Considerations
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Power derating: Keep actual dissipation below 60%–70% of rated power; derate further at elevated temperatures.
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Voltage check: Do not exceed the 200 V maximum working voltage, even if power rating suggests a higher theoretical limit.
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Pad layout: Follow Ever Ohms' recommended pad dimensions to ensure adequate heat sinking.
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Cross-reference: For ±5% tolerance, consider CRH2512J22K0E04Z; for higher power or lower TCR, evaluate Ever Ohms' thin-film or metal-alloy series.
