2N4903

Name: 2N4903
Brand: Microchip Technology
Availability: InStock
Rating: 4.5 (10 reviews)
Author: Lisleapex

2N4903 Power Transistor

8,258 Effective Inventory

2N4903

Effective Inventory8,258

2N4903 Power Transistor

Manufacturer Part # : 2N4903
Package/Case: TO-3
Part Status : Active
Brand: Microchip Technology
Product Categories : Single Bipolar Transistors

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2N4903 DataSheet

Pricing (USD)

Quantity	Unit Price	Ext. Price
1	$113.540	$113.54
200	$45.304	$9,060.80
500	$43.790	$21,895.00
1000	$43.042	$43,042.00

These prices are subject to market fluctuations, and a quote submission is required to obtain the latest prices.

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2N4903 Details

The 2N4903 is a PNP silicon transistor commonly used in electronic circuits for amplification and switching applications. This transistor is known for its high current and low saturation voltage, making it suitable for various voltage regulation and signal processing tasks.

Pinout

1 (E): Emitter
2 (B): Base
3 (C): Collector

(Tip: For detailed pinout information, please refer to the corresponding datasheet.)

Key Features

High Current Gain: Provides significant current gain in amplification circuits.
Low Saturation Voltage: Ensures minimal voltage drop when saturated for efficient switching.
PNP Silicon Transistor: Utilizes PNP polarity for specific circuit requirements.
Reliable Performance: Offers stable and consistent performance over a wide range of operating conditions.

Application

Amplification: Used in audio and signal amplification circuits.
Switching: Ideal for low-power switching applications.
Voltage Regulation: Suitable for voltage regulation and control circuits.

Where to Use

The 2N4903 transistor is commonly utilized in electronic circuits where amplification, switching, or voltage regulation is required. It is a versatile component that can be employed in various applications to control and manipulate electrical signals.

How to Use

When using the 2N4903 transistor, connect the emitter, base, and collector pins according to the circuit requirements. Ensure proper biasing and operating conditions for optimal performance. Refer to the datasheet for detailed usage guidelines.

Application Circuit

The application circuit diagram for the 2N4903 illustrates the connections and configuration required for using the transistor in a typical electronic circuit. It outlines the connections for different applications such as amplification and switching.

(Tip: For detailed circuit diagram connections and usage guide, refer to the datasheet.)

Equivalents

2N4403: A similar PNP transistor with comparable characteristics.
BC557: An alternative PNP transistor offering similar functionality.

Complementary

The 2N4903 can be complemented by the 2N3904 NPN transistor in circuit designs requiring both PNP and NPN transistors for signal amplification and switching purposes.

Ensure compatibility and proper biasing when using complementary transistors in your circuits for optimal performance.

Frequently Asked Questions

Q: What is the maximum current rating of the 2N4903 transistor?

A: The 2N4903 transistor typically has a maximum collector current rating of [insert value] amps. Refer to the datasheet for specific operating conditions and limitations.

Q: Can the 2N4903 be used in audio amplifier circuits?

A: Yes, the 2N4903 transistor is suitable for audio amplifier circuits, providing amplification and signal processing capabilities.

Specifications

The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.

Product Category !	Bipolar Transistors - BJT	RoHS	N
Mounting Style	Through Hole	Transistor Polarity	PNP
Configuration	Single	Collector- Emitter Voltage VCEO Max	80 V
Collector-Emitter Saturation Voltage	1.5 V	Maximum DC Collector Current	5 A
Pd - Power Dissipation	87 W	Gain Bandwidth Product fT	4 MHz
Minimum Operating Temperature	- 65 C	Maximum Operating Temperature !	+ 200 C
Brand	Microchip Technology	Product Type !	BJTs - Bipolar Transistors
Factory Pack Quantity	1	Subcategory	Transistors
Technology	Si

FAQs

What is 2N4903?

The 2N4903 is a low-power, silicon NPN transistor primarily used for switching and amplification of low-level signals. It is commonly used in general-purpose applications where moderate switching speed and low noise are important.

How Does 2N4903 Work?

The 2N4903 works as an NPN transistor, where it amplifies current when a small current flows into its base terminal. This amplification allows it to control larger currents flowing from its collector to emitter, making it useful for signal amplification and switching purposes.

How Many Pins does 2N4903 have and What are the Functions of the Pinout Configuration?

The 2N4903 is typically available in a TO-92 package, which has three leads:

Collector (C): This is the output terminal where the amplified current flows out.
Base (B): The input terminal through which the small control current is applied to control the larger current flow.
Emitter (E): The terminal through which the larger current controlled by the base current exits.

What are the Pros and Cons of 2N4903?

Pros:

Low Cost: Economical choice for basic amplification and switching tasks.
Low Noise: Suitable for applications requiring low noise performance.
Wide Availability: Widely available and easy to source.

Cons:

Not Suitable for High Power: Limited power handling capability compared to power transistors.
Temperature Sensitivity: Performance can vary with temperature changes.
Relatively Slow Speed: May not be suitable for high-frequency applications.

Are There Any Equivalents/Alternatives to 2N4903 for Recommendation?

The 2N2222 and 2N3904 are popular alternatives with similar specifications and pin configurations.
Alternative options include the BC547 and BC548 transistors, which also offer comparable performance characteristics.