2.2k Ohm Resistor 1/4w

The 2.2k? Resistor is a high-quality 1/4 Watt metal film resistor designed to deliver accurate and stable resistance in a wide variety of electronic circuits. With a precise 1% tolerance , it ensures consistent and predictable performance in both analog and digital applications. Metal film resistors are preferred over carbon film types because they offer lower noise , superior thermal stability , and higher long-term accuracy , making them well-suited for sensitive electronic designs. The 2.2 kilo-ohm (2.2k?) value is a standard E96-series resistor widely used in pull-up and pull-down networks , voltage dividers , and transistor base biasing . It is one of the classic base resistors for driving small-signal NPN transistors (like the 2N2222, BC547, or 2N3904 ) from a 5V microcontroller output, providing a balanced base current for reliable saturation. It's also used extensively in audio circuits, LED indicators with high-efficiency LEDs, and RC timing networks . Designed in a standard axial-lead through-hole package , this resistor easily integrates with breadboards, perfboards, and printed circuit boards (PCBs) , making it ideal for rapid prototyping and permanent installations . It is fully compatible with all popular development platforms, including Arduino, Raspberry Pi, ESP32, ESP8266, STM32, and PIC microcontrollers . Specifications Resistance Value: 2.2 k? (2200 Ohm) Power Rating: 1/4 Watt (0.25W) Tolerance: ±1% (Precision Grade) Resistor Type: Metal Film Mounting Style: Through-Hole (Axial Lead) Lead Material: Tinned Copper Compliance: RoHS Compliant Operating Temperature Range: Typically -55°C to +155°C (standard for metal film) Applications Transistor Base Biasing — for 2N2222, BC547, 2N3904, and similar BJTs Pull-up & Pull-down Resistors — stabilizing digital input pins Voltage Dividers — generating reference voltages and scaling analog signals MOSFET Gate Pull-down — keeping gates at known states Logic Level Conversion — combined with other resistors for safe interfacing Signal Conditioning — filtering and impedance matching Arduino & Microcontroller Projects — prototyping and learning kits RC Timing Circuits — combined with capacitors for delay and oscillation Sensor Interfacing — calibration and biasing for analog and digital sensors Audio & RF Circuits — gain setting and feedback networks Educational Electronics — schools, universities, and STEM labs General-Purpose Electronics — repair, modification, and DIY builds