39K 5% 1206 Chip Resistor (Pack of 100)

An Overview: 39K 5% 1206 Chip Resistor

The 39K 5% 1206 chip resistor is a surface-mount resistor designed for various electronic applications. It has a nominal resistance of 39,000 ohms (39K ohms) with a tolerance of ±5%, meaning the actual resistance value can vary by up to 5% from the nominal value. The “1206” refers to the resistor’s package size, which measures 1206 mils (3216 metric), indicating its physical dimensions of 3.2 mm x 1.6 mm. This compact size is ideal for densely populated printed circuit boards (PCBs) and is compatible with automated assembly processes, making it a popular choice in modern electronics.

Specifications

Features

1. Moderate Resistance: With a resistance value of 39,000 ohms, it is suitable for applications requiring moderate resistance.
2. Compact Size: The 1206 package allows for high-density mounting on PCBs, essential for space-constrained designs.
3. Surface Mount Technology (SMT): Suitable for automated pick-and-place assembly, improving manufacturing efficiency and reducing labor costs.
4. Wide Operating Temperature Range: Operates reliably in various environmental conditions, from extreme cold to high heat.
5. Standard Tolerance: ±5% tolerance is sufficient for many general-purpose applications, balancing precision and cost.
6. Stable Performance: Reliable performance over a wide range of temperatures and operating conditions.
7. Cost-Effective: Widely available and inexpensive, making it ideal for large-scale production.

Applications

1. Consumer Electronics: Used in devices such as smartphones, tablets, and laptops for current limiting, voltage division, and signal conditioning.
2. Industrial Equipment: Employed in control systems, automation equipment, and instrumentation, offering reliable performance under harsh conditions.
3. Automotive Electronics: Integrated into automotive systems, including engine control units (ECUs), infotainment systems, and lighting controls, where reliability and compactness are crucial.
4. Telecommunications: Utilized in networking equipment such as routers, switches, and modems for maintaining signal integrity and managing power distribution.
5. Medical Devices: Essential in diagnostic and monitoring equipment, where precision and stability are critical for accurate readings.
6. Power Supplies: Used in power supply circuits for controlling and limiting current, ensuring safe and efficient operation.
7. LED Lighting: Employed in LED driver circuits to manage current and voltage, ensuring consistent brightness and longevity of the LEDs.
8. Audio Equipment: Used in audio devices for signal processing and noise reduction, enhancing sound quality.

Detailed Discussion

Resistance Value and Tolerance

The 39K ohm resistor is suitable for applications that require moderate resistance. The ±5% tolerance allows for some variation in resistance, which is acceptable for non-critical applications where exact resistance values are not crucial. This tolerance level provides a good balance between cost and precision, making these resistors widely used in various electronic applications.

Power Rating and Thermal Management

With a typical power rating of 0.25W (250mW), the 39K 1206 resistor is adequate for many low to moderate power applications. Adequate thermal management is necessary to prevent overheating and ensure longevity in scenarios where resistors might dissipate significant power. The 1206 package allows for sufficient heat dissipation through the PCB.

Temperature Coefficient and Stability

The temperature coefficient of ±200 ppm/°C ensures minimal resistance change with temperature fluctuations, providing stability across a wide range of operating conditions. This feature is particularly important in precision circuits where temperature variations could affect performance.

Applications in Circuit Design

In circuit design, 39K 5% 1206 resistors are versatile components. In voltage divider circuits, they help create specific voltage levels required for different parts of the circuit. In current limiting applications, they protect components from excessive current, enhancing the overall reliability of the circuit. Signal conditioning applications use these resistors to filter signals and reduce noise, improving the accuracy of signal processing.

Reliability and Manufacturing

The use of surface mount technology (SMT) enhances the reliability of these resistors. The 1206 package size is standard for automated assembly, ensuring consistency and reducing the possibility of human error during manufacturing. This standardization is crucial for large-scale production, where consistency and reliability are paramount.

Versatility Across Industries

The wide range of applications across various industries highlights the versatility of the 39K 5% 1206 chip resistor. Its reliability and stability make it a go-to component in both high-volume consumer electronics and specialized industrial and medical equipment. The ability to perform reliably under various environmental conditions ensures its suitability for automotive and telecommunications applications, where both performance and durability are critical.

Summary

In summary, the 39K 5% 1206 chip resistor is a fundamental component in modern electronic circuits, offering a balance of precision, reliability, and cost-effectiveness. Its compact size, surface mount capability, and stable performance across a wide range of conditions make it an essential part of contemporary electronic design and manufacturing.

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

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