1R 1% 0805 Chip Resistor (Pack of 100)

About 1R 1% 0805 Chip Resistor

1R 1% 0805 chip resistor is a surface-mount resistor with a resistance value of 1 ohm (1R) and a tolerance of ±1%. The size designation “0805” refers to its physical dimensions, which are 0.08 inches (2.0 mm) in length and 0.05 inches (1.25 mm) in width. This resistor is commonly used in electronic circuits for precise current sensing, feedback control, and power regulation.

Specifications

Features

1. High Precision: The 1% tolerance ensures precise resistance values, which is critical for applications requiring accurate current measurement and control.
2. Compact Size: The 0805 form factor is compact, allowing for high-density PCB layouts.
3. Wide Temperature Range: Operates effectively from -55°C to +155°C, making it suitable for harsh environments.
4. High Reliability: Surface-mount technology offers better performance and reliability in high-frequency applications compared to through-hole components.
5. Low Power Consumption: The power rating of 0.125W makes it suitable for low-power circuits.
6. Cost-Effective: These resistors are generally inexpensive, making them a cost-effective choice for many designs.

Applications

1. Current Sensing: Used in circuits to measure current flow by detecting voltage drop across the resistor.
2. Feedback Control: Employed in feedback loops for power supplies and amplifiers to ensure stable operation.
3. Power Regulation: Used in power management circuits to regulate and limit current.
4. Consumer Electronics: Found in devices like smartphones, tablets, and laptops for various circuit protection and current limiting functions.
5. Automotive Electronics: Used in control modules, sensors, and infotainment systems.
6. Industrial Equipment: Employed in control systems, power supplies, and monitoring equipment.
7. Medical Devices: Used in diagnostic and monitoring devices where compact size and reliability are crucial.
8. Telecommunications: Integrated into network equipment and communication devices for signal conditioning and impedance matching.
9. Instrumentation: Used in various measurement instruments and control systems.

Developments

1. Improved Tolerances: Manufacturing techniques are enabling even tighter tolerances, enhancing precision in applications.
2. Enhanced Materials: Advances in materials science are improving the temperature coefficient and stability of resistors.
3. Higher Power Ratings: Some manufacturers are producing 0805 resistors with power ratings up to 0.25W, extending their usability in more demanding applications.
4. Automated Assembly: Improvements in SMT assembly technology are increasing the reliability and performance of chip resistors.
5. Environmentally Friendly: Development of lead-free and RoHS-compliant resistors to meet global environmental standards.

Instructions for Use

1. PCB Layout: Ensure that the PCB layout is designed to accommodate 0805 resistors. Pad sizes and spacing should conform to IPC standards for SMT components.
2. Solder Paste Application: Apply solder paste to the pads using a stencil. The thickness of the paste layer should be controlled to ensure proper soldering.
3. Pick and Place: Use automated pick-and-place machines to position the resistors accurately on the PCB. Ensure the components are placed with the correct orientation.
4. Reflow Soldering: Pass the assembled PCB through a reflow soldering oven. Follow the recommended temperature profile to ensure proper soldering without damaging the components.
5. Inspection: After soldering, inspect the PCB for solder joint quality and component placement. Automated optical inspection (AOI) systems can be used for this purpose.
6. Testing: Perform electrical testing to verify the functionality of the resistors in the circuit. Check for correct resistance values and proper operation under expected conditions.
7. Rework: If any issues are found, rework the affected area carefully. Use appropriate tools and techniques to remove and replace the resistors without damaging the PCB or nearby components.
8. Handling and Storage: Store resistors in a dry, clean environment. Use antistatic measures to prevent damage from electrostatic discharge (ESD).

Conclusion

The 1R 1% 0805 chip resistor is a versatile and essential component in modern electronics, suitable for a wide range of applications from consumer electronics to industrial and medical devices. Its high precision, small size, reliability, and ease of use in automated assembly processes make it a staple in PCB design and manufacturing. Recent advancements continue to enhance its performance and applicability, ensuring its relevance in future electronic innovations.

Data Sheet

Also buy this resistor in full reel: (Reel of 5000)

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