220 ohm Resistor
The 220Ω (Ohm) Resistor is a precision 1/4W metal film resistor with a tight 1% tolerance, perfect for DIY electronics, Arduino projects, and prototyping. As one of the most popular resistor values for LED current limiting, it safely drives LEDs from 3.3V and 5V supplies while providing bright, stable illumination. With low noise, excellent thermal stability, and reliable long-term performance, it's an essential component in any maker's toolkit.
المقاومة 220 أوم هي مقاومة دقيقة من نوع Metal Film بقدرة 1/4 واط وتفاوت 1%، مثالية لـ مشاريع الإلكترونيات DIY ومشاريع Arduino والنماذج الأولية. تُعدّ من أكثر القيم استخداماً لتحديد تيار الـ LED، حيث تشغّل الـ LEDs بأمان من مصادر 3.3 و 5 فولت مع إضاءة ساطعة ومستقرة. تتميز بضوضاء منخفضة وثبات حراري ممتاز وأداء موثوق طويل الأمد، وهي مكوّن أساسي في عدة أدوات أي صانع أو مهندس إلكترونيات.
The 220Ω Resistor is a high-quality 1/4 Watt metal film resistor designed to deliver accurate and stable resistance for a wide range of electronic applications. With a tight 1% tolerance, it ensures consistent performance and predictable behavior in both analog and digital circuits. Metal film resistors are preferred over carbon film types thanks to their lower noise, better thermal stability, and superior long-term accuracy, which makes them well-suited for both precision and general-purpose designs.
The 220 ohm value is one of the most widely used resistor values in electronics, especially for LED current limiting when driving standard LEDs from 3.3V and 5V supplies, including Arduino, ESP32, ESP8266, and Raspberry Pi GPIO pins. It provides excellent LED brightness while keeping the current well within the safe operating range. Beyond LEDs, this resistor is also used in voltage dividers, transistor biasing, MOSFET gate networks, and pull-up/pull-down configurations.
Manufactured in a standard axial-lead through-hole package, this resistor easily integrates into breadboards, perfboards, and printed circuit boards (PCBs), making it ideal for rapid prototyping as well as permanent project builds. It is fully compatible with all common development platforms used by hobbyists, students, and professionals.
Specifications
- Resistance Value: 220 Ohm (Ω)
- 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
- LED Current Limiting — the go-to value for driving LEDs from 3.3V and 5V
- Arduino GPIO Protection — limiting current to indicator LEDs
- Voltage Dividers — generating reference voltages and scaling analog signals
- Pull-up / Pull-down Resistors — stabilizing digital input pins
- Transistor Base Biasing — driving BJTs in switching and amplifier circuits
- MOSFET Gate Resistors — protecting and slowing gate transitions
- Signal Conditioning — filtering and impedance matching
- Audio & RF Circuits — gain setting and feedback networks
- Sensor Interfacing — calibration and signal scaling
- Educational Electronics — schools, universities, and STEM labs
- General-Purpose Electronics — repair, modification, and DIY builds
- Logic Level Conversion — combined with other resistors for safe interfacing