10pcs 6.8k ohms 5 band 1/4w resistor

🔹 10PCS 6.8k Ohm (6.8kΩ) Metal Film Resistor – 1/4 Watt, 5-Band

High-precision, low-noise metal film resistors with a 6,800 ohm value and 1% tolerance. Identified by a 5-band color code, these components are essential for precision voltage dividers, feedback networks, pull-up/down circuits, and timing applications where stable and accurate resistance is critical.

✅ Specifications:

• Resistance: 6,800 Ohms (6.8kΩ)

• 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: Blue (6)

  • 2nd Band: Gray (8)

  • 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 6.8kΩ (range: 6.732kΩ to 6.868kΩ).

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

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

• Common Standard Value: A widely used E24 series value found in many filter and divider designs.

• Clear 5-Band Coding: Allows precise identification of both value and tolerance.

📦 Typical Applications:

• Precision Voltage Dividers: Frequently used with sensors (e.g., potentiometers, thermistors) and in reference voltage circuits.

• Op-amp & Comparator Feedback: Setting precise gain or hysteresis levels.

• RC Timing Circuits: Creating specific time constants in oscillators, filters, or power-on reset circuits (e.g., with a 10nF capacitor, τ = 68µs).

• Pull-Up/Pull-Down Resistors: For digital logic, I2C buses, and microcontroller GPIO pins where a precise mid-range value is optimal.

• LED Current Limiting: For higher-voltage supplies or when a specific low current is desired (e.g., with a 12V supply and a 2V LED: ~1.5mA).

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

🔧 Usage & Calculations:

• Ohm’s Law (for Safe Operation):

  • Max Continuous Current: Imax=P/R=0.25/6800≈0.00606AImax​=P/R​=0.25/6800​≈0.00606A or 6.06mA.

  • Max Voltage Drop: Vmax=P×R=0.25×6800≈41.2VVmax​=P×R​=0.25×6800​≈41.2V.

• Power Dissipation: Typically very low in signal-level applications. Ensure P=V2/RP=V2/R remains below 0.25W.

• Common Divider Pair: Often used with a 10kΩ resistor to create a voltage divider with a ratio of ~0.404 (6.8k / (6.8k + 10k)).

• High-Voltage Caution: While the max calculated voltage is high, verify the resistor’s working voltage rating (typically 250-350V) is not exceeded.

⚠️ Important Considerations:

• Voltage Rating: For high-voltage applications, the maximum working voltage of the resistor body is the limiting factor, not power dissipation.

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

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

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