10pcs 15k ohms 5 band Resistor 1/4w

🔹 10PCS 15k Ohm (15kΩ) Metal Film Resistor – 1/4 Watt, 5-Band

High-precision, low-noise metal film resistors with a 15,000 ohm value and 1% tolerance. Identified by a 5-band color code, these components are essential for precision voltage dividers, feedback networks, timing circuits, and sensor interfaces where stable and accurate high-value resistance is critical.

✅ Specifications:

• Resistance: 15,000 Ohms (15kΩ)

• Tolerance: ±1% (Indicated by Brown 5th band)

• Power Rating: 1/4 Watt (0.25W)

• Type: Metal Film (Precision, Low Noise)

• Band Code: 5-Band

  • 1st Band: Brown (1)

  • 2nd Band: Green (5)

  • 3rd Band: Black (0)

  • 4th Band: Red (Multiplier x 100)

  • 5th Band: Brown (±1%)

• Package: Axial Leads

• Lead Spacing: Standard ~10mm (0.4″)

• Temperature Coefficient: Typically ±50 to ±100 ppm/°C

• Operating Temperature: -55°C to +155°C

• Quantity: 10 pieces

⚙️ Key Features:

• High Precision: 1% tolerance ensures the actual resistance is tightly centered around 15kΩ (range: 14.85kΩ to 15.15kΩ).

• Low Noise: Metal film construction generates significantly less inherent noise than carbon film, making them ideal for sensitive analog and audio circuits.

• Excellent Stability: Low temperature coefficient means minimal resistance change with temperature fluctuations.

• Clear 5-Band Coding: The extra band allows precise identification of value and tolerance.

• Reliable & Durable: Robust construction for long-term stability in demanding applications.

📦 Typical Applications:

• Precision Voltage Dividers: Used with sensors (e.g., NTC thermistors, photoresistors) and in reference voltage circuits where accurate ratio matching is required (e.g., with a 10kΩ thermistor).

• Op-amp & Amplifier Feedback Networks: Setting precise gain, particularly in non-inverting configurations.

• RC Timing Circuits: Creating specific time constants in oscillators, filters, or power-on delay circuits (e.g., with a 1µF capacitor, τ = 0.015 seconds).

• Pull-Up/Pull-Down Resistors: For digital logic circuits, I2C buses, and microcontroller GPIO pins where a precise high-value resistor is specified.

• Impedance Matching & Attenuation: In audio circuits and signal conditioning stages.

🔧 Usage & Calculations:

• Ohm’s Law (for Safe Operation):

  • Max Continuous Current: Imax=P/R=0.25/15000≈0.00408AImax​=P/R​=0.25/15000​≈0.00408A or 4.08mA.

  • Max Voltage Drop: Vmax=P×R=0.25×15000≈61.2VVmax​=P×R​=0.25×15000​≈61.2V.

• Power Dissipation: Typically very low in signal-level applications. Ensure P=V2/RP=V2/R remains below 0.25W. At 12V, dissipation is only ~0.0096W.

• Voltage Divider Example: A classic 1/3 voltage divider can be made with a 30kΩ (or two 15kΩ in series) and a 15kΩ resistor. With a 5V input, the output would be 1.67V.

• High-Voltage Caution: While the max calculated voltage is high, the resistor’s working voltage rating is typically lower (e.g., 200-350V). Verify manufacturer specs for high-voltage use.

⚠️ Important Considerations:

• Voltage Rating: The primary limitation for high-value resistors is often the maximum working voltage, not power. Do not exceed the manufacturer’s rated voltage.

• Precision Handling: For the most critical circuits (e.g., precision references), measure and select matched resistors.

• Heat Management: While power dissipation is usually low, avoid placing near heat sources to prevent value drift.

• Leakage Current: At high impedances, ensure the PCB is clean to avoid parallel leakage paths affecting the resistance value.