NTE Electronics NTE87 is a versatile and widely used electronic component, specifically a silicon NPN transistor. It is designed for various applications, including amplification and switching. Below is a detailed introduction to the NTE87, including its specifications and parameters.

## Overview

The NTE87 is a general-purpose NPN transistor that is commonly used in electronic circuits for signal amplification and switching applications. It is known for its reliability and performance in a variety of environments. The transistor is housed in a standard TO-92 package, making it easy to integrate into different circuit designs.

## Key Specifications

1. Type: NPN Transistor
2. Package: TO-92
3. Maximum Collector-Emitter Voltage (Vce): 40V
4. Maximum Collector-Base Voltage (Vcb): 40V
5. Maximum Emitter-Base Voltage (Veb): 5V
6. Collector Current (Ic): 800mA
7. Power Dissipation (Pd): 625mW
8. DC Current Gain (hFE): 100 to 600 (at Ic = 10mA, Vce = 10V)
9. Transition Frequency (fT): 100MHz (typical)
10. Storage and Operating Temperature Range: -55°C to +150°C

## Electrical Characteristics

- Collector-Emitter Saturation Voltage (Vce(sat)): Typically around 0.3V at Ic = 500mA.
- Emitter-Base Saturation Voltage (Veb(sat)): Typically around 1.5V at Ic = 500mA.
- Base Current (Ib): The base current required to drive the transistor into saturation is typically around 1/10th of the collector current.

## Applications

The NTE87 is suitable for a wide range of applications, including:

- Audio Amplifiers: Used in audio amplification circuits due to its good linearity and low distortion characteristics.
- Switching Circuits: Ideal for switching applications where it can control larger loads with a small input signal.
- Signal Processing: Commonly used in signal processing circuits for amplification and modulation.
- General Purpose: Its versatility makes it suitable for various general-purpose applications in consumer electronics, industrial equipment, and more.

## Thermal Characteristics

- Thermal Resistance, Junction to Ambient (RθJA): Approximately 200°C/W.
- Thermal Resistance, Junction to Case (RθJC): Approximately 100°C/W.

## Conclusion

The NTE87 transistor is a reliable and efficient choice for engineers and hobbyists alike. Its robust specifications and versatility make it suitable for a wide range of electronic applications. Whether used in audio amplification, switching, or general-purpose circuits, the NTE87 provides excellent performance and reliability. When designing circuits with the NTE87, it is essential to consider the maximum ratings and ensure that the transistor operates within its specified limits to achieve optimal performance and longevity.