on November 20th 21

2SB772 Transistor: Features, Pinout, and Datasheet

This article explores the 2SB772 transistor, a versatile and reliable component in various electronic applications. Housed in a TO-126 package, it is widely utilized for its ability to handle power management and signal functions efficiently. The 2SB772 is a favored choice in consumer electronics for its durability and in industrial settings for its precision. This article will cover its pinout, CAD model, and detailed insights into its applications, performance, and practical usage.

Catalog

What is the 2SB772 Transistor?

The 2SB772 is a PNP transistor celebrated for its dependability, crafted using advanced planar technology. It forms a complementary pair with its NPN counterpart, the 2SD882, thereby broadening design possibilities in electronics. This component excels in switching operations and audio amplification, offering diverse functionality. With the ability to handle currents up to 3A, the 2SB772 proves its worth in situations requiring effective load management. Its collector-emitter saturation voltage is remarkably low at 0.3V, making it an ideal choice for low-voltage switching applications. This feature shines in battery-powered devices, where minimizing energy use enhances device performance.

The 2SB772 has found its place in amplifiers, power supplies, and motor controls. It has been noted for delivering optimal performance in audio systems, offering clean sound amplification with minimal distortion. The low saturation voltage further empowers to construct efficient circuits, thereby reducing heat and boosting reliability. When incorporating the 2SB772, attention should be paid to thermal management and circuit protection, as high currents can lead to temperature increases. In practical applications, incorporating heat sinks or ensuring adequate ventilation can help maintain ideal operating conditions. Suitable biasing techniques can enhance both performance and longevity. Choosing compatible supporting components is also needed to maximizing this transistor’s potential.

2SB772 Pin Configuration

2SB772 Symbol, Footprint, and CAD Model

2SB772 Technical Specifications

Type	Parameter
Contact Plating	Tin
Mounting Type	Through Hole
Number of Pins	3
Collector-Emitter Breakdown Voltage	30V
hFE Min	100
Packaging	Tube
Pbfree Code	Yes
Moisture Sensitivity Level (MSL)	1 (Unlimited)
ECCN Code	EAR99
Max Power Dissipation	12.5W
Current Rating	-3A
Base Part Number	2SB7
Element Configuration	Single
Transistor Application	SWITCHING
Polarity/Channel Type	PNP
Mount	Through Hole
Package / Case	TO-225AA, TO-126-3
Transistor Element Material	SILICON
Number of Elements	1
Operating Temperature	150°C TJ
JESD-609 Code	e3
Part Status	Obsolete
Number of Terminations	3
Voltage - Rated DC	-30V
Peak Reflow Temperature (Cel)	250
Frequency	100MHz
Pin Count	3
Power Dissipation	12.5W
Gain Bandwidth Product	100MHz
Transistor Type	PNP
Collector Emitter Voltage (VCEO)	30V
DC Current Gain (hFE) (Min) @ Ic, Vce	100 @ 100mA 2V
Vce Saturation (Max) @ Ib, Ic	1.1V @ 150mA, 3A
Collector Base Voltage (VCBO)	60V
Height	11.05mm
Width	2.8mm
RoHS Status	ROHS3 Compliant
Max Collector Current	3A
Current - Collector Cutoff (Max)	100µA
Transition Frequency	100MHz
Emitter Base Voltage (VEBO)	5V
Length	7.8mm
Radiation Hardening	No
Lead Free	Lead Free

Features of the 2SB772

• Minimizes power loss and improves system efficiency.

• Reduces heat generation, enhancing thermal management and reliability.

• Ideal for compact designs where space is limited.

• Simplifies circuit design by enabling complementary PNP-NPN pairing.

• Ensures harmonious and enhanced circuit performance.

• Commonly used in scenarios demanding reliability and efficiency, such as audio systems.

• Preserves signal integrity and minimizes distortion in different applications.

• Excellent current handling capability.

• Adaptable and reliable for diverse electronic setups.

Applications of 2SB772

Relay Driving and Switching Tasks

In the context of relay driving, the 2SB772 showcases its strengths by managing considerable current loads while ensuring dependable switching capabilities. The swift response times it offers prompt activation of relays. This characteristic is reminiscent accrued in industrial automation, where being quick to respond to switching demands can enhance both productivity and safety within the workspace. The utility of the 2SB772 extends beyond mere on/off operations in general switching tasks. For example, within control systems where accurate timing and sequencing hold great importance.

Audio Power Amplification

The utilization of the 2SB772 lies in audio power amplification. This application necessitates not just the ability to boost signals but also to uphold sound fidelity and minimize distortion. The inherent properties of the 2SB772 align well with these demanding requirements, garnering positive feedback. In venues where sound quality is of utmost importance like concert halls and recording studios, the meticulous selection of amplification components has yielded substantial improvements.

DC-DC Conversion Systems

In the discussion of DC-DC conversion systems, the integral role played by the 2SB772 is important. Its efficiency in switching applications allows for effective energy conversion, making it a favored option in various power supply designs.

Equivalent to the 2SB772

• 2N6407

• 2SA715

• 2SA738

• 2N6414

• 2N6415

• 2SA963

• 2SB743

• 2SB744

• MJE172

• KSB772

How to Use 2SB772?

The 2SB772 transistor is known for its impressive capacity to manage currents of up to 3A, making it an adaptable component for a wide range of electronic applications.

Driving High-Capacity DC Motors

When employing the 2SB772 for driving high-capacity DC motors, it is important to evaluate the motor's specifications alongside the transistor's capabilities. Effective heat dissipation is needed; thus, the application of proper heat sinks can protect against thermal overload. Implementing a pulse width modulation (PWM) control strategy can refine the speed and torque output of DC motors, enabling smoother operation under varying load circumstances. This approach not only bolsters performance but also contributes to extending the motor's lifespan by minimizing energy waste.

Utilizing the 2SB772 with LEDs and Relays

Beyond motor control, the 2SB772 proves beneficial in managing LED arrays and relays. In LED applications, the transistor can capably support multiple LEDs, fostering brilliant illumination in designs such as backlighting or decorative lighting without risking overload. Integrating current limiting resistors alongside the 2SB772 can help ensure that the LEDs function within safe current parameters, ultimately prolonging their usability.

Relays also serve as an excellent avenue for the 2SB772's application. They work by controlling higher voltages and currents with low-power signals. When incorporating relays, protecting the circuit is required; employing methods such as flyback diodes helps mitigate voltage spikes that could potentially harm the transistor. This protective measure contributes to the reliability and effectiveness of the overall design, ensuring that components function harmoniously.

Building High-Power Audio Amplifiers

The 2SB772 shines in the design of high-power audio amplifiers. Utilizing the transistor to drive speakers directly from low-powered audio outputs, like those from radios or media players. Thoughtful circuit design matters greatly; therefore, feedback mechanisms should be incorporated to preserve sound quality and minimize distortion even at elevated volumes. Judicious selection of complementary parts, including capacitors and inductors, can yield enhancements in amplifier performance.

The versatility of the 2SB772 in applications ranging from driving DC motors to constructing audio amplifiers illustrates its role in contemporary electronics. By adhering to best practices in circuit design such as thermal management and protective strategies, one can fully realize the potential of the 2SB772, resulting in efficient and impactful electronic solutions.

2SB772 Transistor Package

2SB772 Manufacturer Information

STMicroelectronics stands out as a player in the semiconductor technology, taking responsibility for the manufacture of the 2SB772 component. This product not only embodies the firm's vast expertise but also highlights their intricate web of collaborations, elements that mark their groundbreaking contributions to System-on-Chip (SoC) innovations. The dynamic landscape of SoC technology opens up extensive opportunities for refining modern microelectronics, thereby paving the way for advanced and efficient device capabilities. STMicroelectronics embodies a profound commitment to excellence and visionary thinking within the spectrum of semiconductor technology. Their contributions to the SoC landscape reflect a synergy of innovation and collaboration, equipping them to navigate the growing complexities of contemporary electronics and ensuring their lasting influence in the industry.

Datasheet PDF

2SB772 Datasheets:

2SB772.pdf