High-power thick film resistors for surface-mount electronic circuits
Manufacturer： bourns
# Introduction to the CR2512 - JW - 391ELF Product Series
## Overview
The CR2512 - JW - 391ELF product series represents a cutting - edge solution in the field of electronic components. Engineered with precision and designed to meet the most demanding requirements of modern electronic applications, this series offers a unique combination of performance, reliability, and versatility.
## Physical Characteristics
### Dimensions
The CR2512 - JW - 391ELF components follow the 2512 package size standard. This size is well - recognized in the electronics industry, measuring approximately 6.35mm x 3.18mm. The standardized dimensions make it easy to integrate these components onto printed circuit boards (PCBs) using automated assembly processes, ensuring high - speed and accurate placement during manufacturing.
### Appearance
These components feature a sleek and compact design. The outer casing is made of high - quality materials that provide excellent protection against environmental factors such as moisture, dust, and mechanical stress. The surface finish is smooth, which not only enhances the aesthetic appeal but also helps in preventing the accumulation of contaminants.
## Electrical Performance
### Resistance Value
The "391" in the product code indicates a resistance value. In the EIA (Electronic Industries Alliance) standard for resistor marking, 391 represents a resistance of 390 ohms. This specific resistance value is carefully calibrated during the manufacturing process to ensure high precision. The tolerance of the resistance is tightly controlled, typically within a narrow range (e.g., ±1% or ±0.5%), which is crucial for applications where accurate resistance values are required for proper circuit operation.
### Power Rating
The CR2512 - JW - 391ELF series is designed to handle a specific power rating. This power rating determines the maximum amount of power that the component can dissipate without overheating. With a suitable power rating, these resistors can be used in a variety of circuits, from low - power signal processing applications to higher - power power - supply and load - balancing circuits.
### Temperature Coefficient
The temperature coefficient of resistance (TCR) is an important parameter for resistors. The CR2512 - JW - 391ELF series has a low TCR, which means that the resistance value changes minimally with temperature variations. This stability is essential in applications where the operating temperature may fluctuate, such as in automotive electronics, industrial control systems, and outdoor electronic devices.
## Applications
### Consumer Electronics
In consumer electronics, such as smartphones, tablets, and laptops, the CR2512 - JW - 391ELF resistors can be used in power management circuits, signal conditioning circuits, and voltage - dividing circuits. Their small size and high precision make them ideal for fitting into the compact spaces of these devices while ensuring reliable performance.
### Automotive Electronics
Automotive applications demand high - reliability components that can withstand harsh environmental conditions. The CR2512 - JW - 391ELF series meets these requirements and can be used in engine control units (ECUs), anti - lock braking systems (ABS), and in - car entertainment systems. Their low TCR and high power - handling capabilities make them suitable for use in automotive electrical systems.
### Industrial Control Systems
Industrial control systems often require precise and stable electronic components. These resistors can be used in sensor circuits, motor control circuits, and power - distribution circuits in industrial automation equipment. Their ability to operate over a wide temperature range and resist environmental stress makes them a reliable choice for industrial applications.
## Manufacturing and Quality Assurance
### Manufacturing Process
The CR2512 - JW - 391ELF series is manufactured using state - of - the - art production techniques. The resistive elements are fabricated