SR1206JR-074R7L
Thick film anti-surge resistors for surface mount applications
Manufacturer： yageo
series introduction
# Introduction to the SR1206JR - 074R7L Product Series
## 1. Overview
The SR1206JR - 074R7L product series belongs to the realm of electronic components, specifically resistors. These resistors are designed to meet a wide range of electrical and electronic circuit requirements with high precision and reliability. They play a crucial role in controlling current flow, dividing voltages, and dissipating power in various applications.
## 2. Physical Characteristics
### Package Size
The "1206" in the model number indicates the package size of the resistor. In the imperial measurement system, a 1206 package has dimensions of approximately 0.12 inches (3.2 mm) in length and 0.06 inches (1.6 mm) in width. This standard size makes it compatible with a vast array of printed circuit boards (PCBs) and surface - mount technology (SMT) assembly processes. It allows for easy placement and soldering on PCBs, enabling efficient mass - production of electronic devices.
### Color and Appearance
The resistors in the SR1206JR - 074R7L series typically have a characteristic color - coded body. The body is usually a light - colored ceramic material, which provides good mechanical and thermal stability. The color bands on the resistor are used to indicate its resistance value and tolerance, following the standard resistor color - coding scheme.
## 3. Electrical Specifications
### Resistance Value
The "4R7" in the model number represents the resistance value of the resistor. In this case, the resistance is 4.7 ohms. This value is carefully calibrated during the manufacturing process to ensure high accuracy. The resistor is designed to maintain this resistance value within a specified tolerance range under normal operating conditions.
### Tolerance
The "JR" in the model number indicates the tolerance of the resistor. A common tolerance for this series is ± 5%. This means that the actual resistance value of the resistor can vary by up to 5% from the nominal value of 4.7 ohms. For example, the actual resistance could range from 4.465 ohms (4.7 ohms - 5% of 4.7 ohms) to 4.935 ohms (4.7 ohms+ 5% of 4.7 ohms). A tight tolerance is important in applications where precise current and voltage control are required.
### Power Rating
The "07" in the model number is related to the power rating of the resistor. For this series, the power rating is typically 0.25 watts. This means that the resistor can safely dissipate up to 0.25 watts of power without overheating or suffering damage. The power rating is an important consideration in circuit design, as it determines the maximum amount of power that the resistor can handle without exceeding its temperature limits.
## 4. Performance and Reliability
### Temperature Coefficient
The SR1206JR - 074R7L resistors have a specified temperature coefficient. This coefficient indicates how the resistance value of the resistor changes with temperature. A low temperature coefficient is desirable, as it means that the resistance value remains relatively stable over a wide range of temperatures. This is crucial in applications where the operating temperature can vary significantly, such as in automotive electronics or industrial control systems.
### Stability
These resistors are designed to offer long - term stability. They are resistant to environmental factors such as humidity, vibration, and mechanical stress. This ensures that the resistance value remains consistent over time, reducing the need for frequent calibration or replacement in electronic circuits.
## 5. Applications
### Consumer Electronics
In consumer electronic devices such as smartphones, tablets, and laptops, the SR1
Images for reference
1206(0^7mm thickness)