2N6488 - Bipolar Power Transistor

Overview

The 2N6488 is a silicon epitaxial-base NPN bipolar power transistor designed for general-purpose amplifier and switching applications. This robust component is characterized by its high current capability, low saturation voltage, and excellent gain performance. The transistor is housed in a TO-220 package, making it suitable for a wide range of industrial and commercial applications where reliable power handling is required.

With its ability to handle significant power dissipation and current loads, the 2N6488 is commonly used in power supply circuits, motor control systems, and audio amplifiers. Its construction ensures stable performance across a broad temperature range, making it a versatile choice for designers.

Features

• High Current Capability: Collector current (Ic) up to 8A.
• Low Saturation Voltage: V_CE(sat) typically 1.5V at Ic = 4A, ensuring efficient switching.
• High DC Current Gain: h_FE of 30 to 150 at Ic = 4A, providing excellent amplification characteristics.
• Power Dissipation: Capable of dissipating up to 75W (at 25°C case temperature).
• TO-220 Package: Robust and widely used package with good thermal performance.
• Wide Operating Temperature Range: -65°C to +200°C, suitable for harsh environments.
• Complementary PNP Type Available: 2N6487 is the PNP counterpart for push-pull configurations.

Applications

The 2N6488 is widely used in various electronic circuits due to its high power handling and switching capabilities. Key application areas include:

• Power Supplies: Used in linear and switching regulators for current amplification.
• Motor Control: Suitable for driving DC motors and solenoids in industrial and automotive systems.
• Audio Amplifiers: Employed in output stages of high-power audio amplifiers.
• Switching Circuits: Ideal for relay drivers and inductive load switching due to low saturation voltage.
• General-Purpose Amplification: Used in signal amplification stages where high current gain is required.

Electrical Characteristics

The following tables summarize the key electrical parameters of the 2N6488 under specified test conditions.

Absolute Maximum Ratings

• Collector-Emitter Voltage (V_CEO): 80V
• Collector-Base Voltage (V_CBO): 100V
• Emitter-Base Voltage (V_EBO): 5V
• Collector Current (I_C): 8A (continuous)
• Base Current (I_B): 4A
• Total Power Dissipation (P_tot): 75W at T_case ≤ 25°C
• Operating and Storage Temperature Range: -65°C to +200°C

Thermal Characteristics

• Thermal Resistance, Junction-to-Case (R_θJC): 1.67°C/W
• Thermal Resistance, Junction-to-Ambient (R_θJA): 62.5°C/W (without heatsink)

On Characteristics

• DC Current Gain (h_FE): 30 - 150 (at I_C = 4A, V_CE = 4V)
• Collector-Emitter Saturation Voltage (V_CE(sat)): 1.5V (max) at I_C = 4A, I_B = 0.4A
• Base-Emitter Saturation Voltage (V_BE(sat)): 2V (max) at I_C = 4A, I_B = 0.4A

Package Information

The 2N6488 is housed in a TO-220 package, which is a widely used through-hole transistor package known for its thermal and mechanical performance. Below are the key package details:

TO-220 Package Dimensions

• Total Height: 16.0 mm (max)
• Lead Length: 12.7 mm (min)
• Lead Spacing: 2.54 mm (between leads)
• Mounting Hole Diameter: 3.5 mm (recommended)

Mechanical Specifications

• Weight: Approximately 2.0 grams
• Material: Molded plastic (epoxy) with metal tab for heatsink attachment
• Termination: Tin-plated leads for solderability

Recommended Heatsink Usage

For applications where power dissipation exceeds a few watts, a heatsink is strongly recommended to maintain safe operating temperatures. The TO-220 package is designed for easy attachment to heatsinks using standard mounting hardware (e.g., screws or clips). Ensure proper thermal interface material (e.g., thermal grease) is applied between the transistor tab and heatsink for optimal thermal performance.

Reliability and Compliance

The 2N6488 is manufactured under strict quality control standards to ensure long-term reliability. It complies with industry-standard specifications for power transistors, including:

• RoHS compliance (Restriction of Hazardous Substances)
• Flame-retardant epoxy molding compound (UL 94 V-0 rating)
• ESD protection (handling precautions still recommended)

Handling and Storage Guidelines

To maintain the integrity and performance of the 2N6488, observe the following precautions:

• Store in anti-static packaging when not in use to prevent electrostatic discharge damage.
• Avoid exposure to excessive moisture; store in a dry environment (≤ 40°C/90% RH).
• Use proper soldering techniques (recommended soldering iron temperature: 260°C max for 10 seconds).
• Do not exceed absolute maximum ratings during circuit operation.