ERJ-3EKF4991V Series

series introduction

# ERJ - 3EKF4991V Product Series Introduction

## 1. Overview
The ERJ - 3EKF4991V product series represents a cutting - edge range of electronic components, specifically resistors, engineered to meet the diverse and demanding requirements of modern electronic circuits. These resistors are designed with precision and reliability in mind, making them an ideal choice for a wide array of applications across multiple industries.

## 2. Key Features

### 2.1 High Precision
The ERJ - 3EKF4991V resistors offer an extremely high level of precision. With a tolerance level that can be as low as ±1%, they ensure accurate and stable resistance values. This precision is crucial in applications where even the slightest deviation in resistance can lead to significant performance issues, such as in precision measurement equipment, sensor circuits, and high - end audio amplifiers.

### 2.2 Low Temperature Coefficient
These resistors have a low temperature coefficient of resistance (TCR). A low TCR means that the resistance value of the resistor changes very little with variations in temperature. This characteristic is essential in environments where temperature fluctuations are common, such as in automotive electronics, industrial control systems, and outdoor communication equipment. It helps maintain the stability and accuracy of the circuit over a wide temperature range, typically from - 55°C to +155°C.

### 2.3 Compact Size
The ERJ - 3EKF4991V series is designed in a compact form factor. This small size allows for easy integration into densely populated printed circuit boards (PCBs). It is particularly beneficial in applications where space is at a premium, such as in mobile devices, wearable electronics, and miniaturized medical devices. The compact design also helps in reducing the overall size and weight of the final product.

### 2.4 High Power Rating
Despite their small size, these resistors can handle relatively high power. They are capable of dissipating power efficiently, which makes them suitable for applications that require high - power handling capabilities, such as power supplies, motor control circuits, and RF amplifiers. The high - power rating ensures that the resistors can operate reliably under heavy load conditions without overheating or degrading in performance.

### 2.5 Excellent Frequency Response
The ERJ - 3EKF4991V resistors exhibit excellent frequency response characteristics. They can maintain stable performance across a wide frequency range, from DC to high - frequency applications. This makes them suitable for use in RF circuits, communication systems, and high - speed data transmission equipment, where signal integrity and minimal signal loss are critical.

## 3. Technical Specifications

### 3.1 Resistance Value
The nominal resistance value of the ERJ - 3EKF4991V is 4990 ohms (4.99 kΩ). This value is carefully calibrated during the manufacturing process to ensure high precision.

### 3.2 Tolerance
As mentioned earlier, the resistors in this series typically have a tolerance of ±1%. This tight tolerance ensures that the actual resistance value of each resistor is within 1% of the nominal value, providing consistent performance in the circuit.

### 3.3 Temperature Coefficient
The temperature coefficient of resistance (TCR) is typically in the range of ±100 ppm/°C. This low TCR ensures that the resistance change is minimal over the specified temperature range, maintaining the stability of the circuit.

### 3.4 Power Rating
The power rating of the ERJ - 3EKF4991V resistors is [X] watts, depending on the specific model within the series. This power rating allows the resistors to handle the required power dissipation in various applications.

### 3.5 Package Type
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Images for reference

0603 Pkg

1% Thick Film Chip

1% Thick Film Chip Material

Datasheets

Partlist

ERJ-3EKF4991V