CRH1206F270KP05Z High Power Thick Film Chip Resistor with 270K Ω Resistance 0.5W

CRH1206F270KP05Z Technical Parameters | 1206 270K 0.5W Ever Ohms High Power Thick Film Chip Resistor

CRH1206F270KP05Z is the full orderable part number of EVER OHMS' CRH series high power thick film chip resistor, commonly referred to as "1206 270K 0.5W Ever Ohms resistor." It delivers a 0.5W rated power in a standard 1206 (metric 3216) package, with 270kΩ resistance, ±1% tolerance, ±100ppm/℃ TCR, 200V maximum working voltage, and an operating temperature range of −55℃ to +155℃, supplied in tape & reel at 5000pcs/reel.

1. Part Number Decoding

Common shorthand in BOMs and searches: CRH1206F270K, CRH1206F270KP05Z, 1206 270K 0.5W Ever Ohms, EVER OHMS CRH1206 high power resistor. Always specify the F tolerance and P05Z suffix to avoid substitution with J-tolerance or standard-power CR1206 parts.

2. Key Electrical Parameters

Design note — voltage is the limiting factor here. Using RCWV = √(P×R), the theoretical voltage at 0.5W for 270kΩ is about 367V, which exceeds the component's 200V maximum working voltage. Therefore the actual operating limit is set by the 200V rating, not by power. For high-voltage divider or bus-sensing applications, ensure at least 30% margin on peak circuit voltage; switch to EVER OHMS HR or other high-voltage series if needed.

Rated continuous current is only about 1.36mA (I = √(0.5/270000)). This value range suits divider networks, pull-up/pull-down, feedback loops and signal limiting—not high-current paths.

3. Construction & Thermal Design

Power doubling within the same 1206 footprint comes from: 96% alumina ceramic substrate for efficient heat conduction to terminations and PCB copper; a thickened ruthenium-based thick film resistive layer sintered at 850℃ with laser trimming for precise value control; and a glass glaze protective coat over a Ni/Sn termination system that resists electrochemical migration and supports reflow/wave soldering with low pick-and-place defect rates.

4. Reliability

Designed and verified per JIS-C-5201-1 / IEC 60115-1 relevant clauses: load life (resistance change within ±1% class at rated power), short-time overload, resistance to soldering heat, temperature cycling from −55℃ to +155℃, damp heat loading, and solderability. Refer to the latest official datasheet for exact test conditions and acceptance criteria; automotive or industrial certifications should be confirmed during part selection.

5. Typical Applications

High-voltage dividers and bus voltage sensing in AC-DC supplies, PV inverters and energy storage PCS; feedback and compensation networks in SMPS and PWM controllers; DC bus overvoltage detection and discharge paths in VFDs/servo drives; PLC digital input limiting and sensor supply dividers; telecom power and base station equipment exposed to wide outdoor temperature swings; appliance and LED driver control boards.

6. Application Guidelines

• Derating: 0.5W is rated at 70℃ ambient; power derates linearly to zero at 155℃. For continuous duty keep actual dissipation within 50%–70% of rated; for pulse conditions check the pulse power curve rather than average power alone.
• PCB layout: Use standard 1206 land pattern, add copper pour and thermal vias under the pads, and keep spacing from adjacent heat sources.
• Avoid series/parallel combinations to make up values: In series strings verify voltage distribution per resistor; parallel branches risk uneven current sharing.
• Soldering: Reflow preferred; for hand soldering keep iron temperature around 350℃ and contact time under 3 seconds.
• Incoming inspection: Verify original reel labels and tape markings (part number, value, tolerance, lot code); request RoHS/REACH reports as needed.

7. Where to Buy

• Shenzhen Shunhai Technology Co., Ltd. : Authorized distributor of EVER OHMS in mainland China, covering the full range of thick film and thin film chip resistors, alloy resistors and precision resistors. Supplies genuine CRH1206F270KP05Z from prototype to mass production, with selection support, cross-reference matching and lead-time confirmation.
• HuaNian Mall : Online electronic components platform where you can search EVER OHMS part numbers, check real-time stock and tiered pricing, and place orders quickly—suitable for small-to-medium volume replenishment and one-stop BOM kitting.

Parameters are compiled from EVER OHMS CRH series public specifications; final values shall follow the manufacturer's latest datasheet. Please obtain and verify the datasheet before mass production.