300KΩ 1/4W resistor

A 300KΩ (300,000 ohms) 1/4 watt resistor is a fixed-value resistor designed to offer a resistance of 300,000 ohms and can dissipate up to 0.25 watts of power. It is used in electronic circuits where precise resistance values are necessary, including applications such as voltage dividers, current limiting, and biasing.

Key Features:

• Resistance: 300KΩ
• Power Rating: 1/4W (0.25 watts)
• Tolerance: ±5% (commonly), with ±1% available for higher precision
• Temperature Coefficient: Typically ±100ppm/°C or ±200ppm/°C

Technical Specifications:

• Resistance: 300KΩ
• Power Rating: 1/4W (0.25 watts)
• Tolerance: ±5% (J), ±1% (F), depending on the specific type
• Temperature Coefficient: ±100ppm/°C or ±200ppm/°C
• Operating Temperature Range: -55°C to +155°C
• Body Size: Typically through-hole with axial leads (1/4W size)
• Material: Carbon film, metal film, or metal oxide, depending on the resistor type

Applications:

• Current Limiting: Controls current flow to prevent damage to components.
• Voltage Division: Used in voltage divider circuits to achieve specific voltage levels.
• Biasing: Sets operating points in electronic circuits, particularly in transistor circuits.
• Signal Conditioning: Adjusts impedance and signal levels in various applications.

Usage:

1. Placement: Insert the resistor into the appropriate circuit board locations.
2. Insertion: Feed the resistor leads through the holes or slots on the PCB.
3. Soldering: Solder the resistor leads to the circuit board and trim excess leads.
4. Verification: Measure resistance with a multimeter to ensure the correct value.

Caution:

• Power Dissipation: Ensure that the resistor does not exceed its 0.25-watt power rating to avoid overheating and potential failure.
• Voltage Rating: Check that the resistor’s voltage rating is suitable for your application.
• Handling: Handle the resistor carefully to avoid damage.