What is a Resistor?
A resistor is a passive two-terminal electronic component that resists the flow of current. It is used to manage voltage, limit current, divide voltages, and more. The resistance is measured in ohms (Ω).
Types of Resistors
- Carbon Composition: Ideal for surge resistance.
- Metal Film: Accurate and stable, commonly used in precision applications.
- Wirewound: High power, used in industrial setups.
- Thick/Thin Film: Common in surface mount (SMD) designs.
Applications of Resistors
Resistors are essential in circuits for:
- LED protection
- Voltage division
- Signal conditioning
- Temperature sensing
Key Specifications
| Parameter | Description |
|---|---|
| Resistance (Ω) | Value of resistance |
| Tolerance (%) | Deviation from nominal value |
| Power Rating (W) | Maximum power dissipation |
| Temperature Coefficient | Stability with temperature change |
How to Select a Resistor
When selecting a resistor, consider:
- Resistance value based on voltage and current
- Wattage rating above your expected power load
- Size and mounting type (SMD or Through-Hole)
Use our free tool: LED Resistor Calculator
Resistor Color Code Tool (4-band & 5-band)
Use the tool below to interpret or calculate resistor values using color bands. Supports both 4-band and 5-band codes:
Interactive tool: Resistor Color Code Calculator
Frequently Asked Questions
- What is a resistor used for?
- To control voltage and current in electrical circuits.
- How to read resistor color code?
- Refer to the standard 4/5/6-band color chart or use our interactive tool.
Product Showcase
| Model | Resistance | Type | Buy |
|---|---|---|---|
| 1-1613470-3 | 10KΩ | SMD | Buy Now |
| 1-1623708-4 | 1KΩ | Through-Hole | Buy Now |
| 1-1623708-5 | 100Ω | SMD | Buy Now |
| 1-1623708-7 | 4.7KΩ | SMD | Buy Now |
| 1-1623728-8 | 220Ω | Through-Hole | Buy Now |
| 1-1623753-0 | 1KΩ | Metal Film | Buy Now |
| 1-1623781-1 | 10Ω | Wirewound | Buy Now |
Resistor Product Categories
- Resistors
- Resistor Networks & Arrays
- Resistor Accessories
- Chip Resistor (SMD)
- Through Hole Resistors
- Chassis Mount Resistors
- Specialized Resistors
Downloads
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