SMD Resistor 47Kohm (473) (0805) (10pcs)

SMD Resistor 47KΩ (473) (0805) (10pcs)

An SMD (Surface Mount Device) Resistor with a 47KΩ resistance value, marked as 473, is a commonly used component in various electronic circuits. The 0805 refers to its package size, which is a standard surface-mount size for resistors. The 10pcs indicates the quantity of resistors in the pack.

Key Features:

1. Resistance Value:
   • 47KΩ (47,000 Ohms): This resistor has a resistance value of 47KΩ, suitable for a wide range of applications, including voltage dividers, current limiting, filtering, and biasing circuits.
2. Package Size:
   • 0805: The 0805 package size refers to the dimensions of the resistor, which are approximately 0.08 inches x 0.05 inches (or 2.0mm x 1.25mm). This is a standard SMD package that is commonly used for compact, modern electronic devices and circuits.
3. Tolerance:
   • The tolerance of the resistor is typically ±1% or ±5%, depending on the specific product and manufacturer. The tolerance indicates the allowable deviation from the nominal value. For example, a 47KΩ ±1% resistor could vary between 46.53KΩ and 47.47KΩ.
4. Power Rating:
   • Standard Power Rating: The power rating for an 0805 resistor is typically 0.125W (1/8W). This is sufficient for most low-power circuits. It’s important to ensure the resistor is rated for the power it will dissipate in the circuit to avoid overheating or damage.
5. Quantity:
   • 10pcs: The pack contains 10 pieces of the resistor, which is a common quantity for SMD resistors used in prototyping and small-scale production.

Applications of SMD Resistor 47KΩ (0805) (10pcs):

1. Voltage Dividers:
   • A 47KΩ resistor is commonly used in voltage divider circuits to produce a specific fraction of a voltage. In combination with another resistor, it can create a desired output voltage for components like analog-to-digital converters (ADC) or sensors.
2. Current Limiting:
   • 47KΩ resistors are used to limit current in circuits, such as in LED circuits, where they prevent excessive current flow that could damage the component.
3. Biasing and Filtering:
   • SMD resistors like 47KΩ are often used in biasing circuits, particularly for transistors and operational amplifiers. They are also used in filter circuits to set the cutoff frequency for high-pass or low-pass filters.
4. Pull-up and Pull-down Resistors:
   • A 47KΩ resistor is commonly used as a pull-up or pull-down resistor in digital circuits, particularly for logic-level inputs (e.g., microcontrollers or logic gates) to ensure proper voltage levels when switches are open.
5. Feedback and Adjustment:
   • 47KΩ resistors can be used in feedback loops in op-amp circuits, where they set the gain of the amplifier, or for adjustment in various circuits, such as in oscillators and filters.
6. Sensing and Calibration:
   • In certain sensing circuits, a 47KΩ resistor may be used as part of a calibration circuit to ensure accurate readings from sensors or to adjust the sensor’s output.

Advantages of SMD Resistors:

1. Compact and Space-saving:
   • SMD (Surface Mount) resistors are smaller than traditional through-hole resistors, making them ideal for modern, compact electronic devices where space is a premium.
2. Easy to Mount:
   • SMD resistors are designed for easy assembly on automated pick-and-place machines, making them ideal for high-volume production.
3. High Reliability:
   • SMD components tend to be more robust and reliable due to their smaller size and better performance in high-frequency circuits, compared to their through-hole counterparts.
4. Widely Available and Cost-effective:
   • SMD resistors like the 47KΩ are widely available and cost-effective for manufacturers, engineers, and hobbyists.