1KΩ 1/4W Carbon Film Resistor ±5% Through Hole Axial Lead Pack

1KΩ 1/4W Carbon Film Resistor – ±5% Through Hole Axial Lead Pack

The 1KΩ (1 kilohm) Carbon Film Resistor is a fundamental component in virtually every electronics circuit. Rated at 1/4W (0.25W) with ±5% tolerance, it is the standard current-limiting resistor for LEDs, base resistor for transistor switching, and a key building block in countless analog and digital designs.

Key Specifications

• Resistance: 1KΩ (1,000 ohms)
• Power Rating: 1/4W (0.25W)
• Tolerance: ±5% (Gold band)
• Type: Carbon Film
• Mounting: Through Hole, Axial Lead
• Temperature Coefficient: ±200 ppm/°C typical
• Operating Temperature: −55°C to +155°C

Compatibility & Use Cases

The 1KΩ resistor is used daily in circuits with Arduino, ESP32, Raspberry Pi, and other microcontrollers. Common applications include:

• LED current-limiting resistor (5V supply with standard LEDs)
• Base resistor for NPN/PNP transistor switching (BC547/BC557)
• Pull-up resistor for open-collector outputs
• Voltage divider networks and signal attenuation
• Buzzer and relay driver circuits

An absolute must-have in any component kit — stock up in bulk for uninterrupted prototyping.

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