BC549 Datasheet PDF – 30V, 100mA, NPN Transistor

This is one of the most commonly used NPN transistor types.

Part Number: BC549

Function: 30V, 100mA, NPN Transistor

Package: TO-92 Type

Manufacturer: ON Semiconductor

For additional details, please refer to the preview image and the accompanying PDF file.


BC549 npn transistor

What is BC549?

This is a maximum voltage rating of 30V and a maximum current rating of 100mA, NPN general-purpose transistors in small plastic packages. It is widely used in applications such as signal amplification, switching, and oscillator circuits.

The BC549 is a general-purpose NPN bipolar junction transistor (BJT) that is commonly used in electronic circuits due to its low cost and wide availability.



0. Switching and Amplifier

1. Low current

2. Low voltage

3. Three different gain selections


1. It is a versatile transistor that can be used in a wide range of general-purpose applications.

2. It has a low collector-emitter saturation voltage, which reduces power loss and improves efficiency.

3. Its small TO-92 package makes it easy to use and suitable for applications where space is limited.


1. It is designed for low-power applications and may not be suitable for high-power circuits.

2. Its maximum current rating of 100mA may be too low for some applications.

Absolute maximum ratings ( Ta=25°C )

1. Collector to Base Voltage: Vcbo = 30 V

2. Collector to Emitter Voltage: Vceo = 30 V

3. Emitter to Base Voltage: Vebo = 5 V

4. Collector Current: Ic = 100 mA

5. Collector Power Dissipation : Pc = 500 mW

6. Junction Temperature: Tj = 150°C

7. Storage Temperature: Tsg = -65 ~ +150°C


1. General-purpose switching and amplification


Q1: What is the difference between the BC547 and BC549 transistors?

A1: The BC549 is similar to the BC547 in many ways, but it has a lower voltage rating of 30V compared to the BC547’s 45V rating. Additionally, the BC549 is typically used in low-power applications, while the BC547 can be used in both low-power and medium-power circuits.


Other data sheets are available within the file: BC546, BC547, BC548, BC550

BC549 Datasheet PDF

BC847 pdf

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IRG4BC30KD Datasheet – 600V, 16A, Ultra Fast IGBT – IR

What is IRG4BC30KD?

This is a high-speed insulated gate bipolar transistor (IGBT) designed for use in high-power switching applications. It has a voltage rating of 600V and a current rating of 16A.

Function: 600V, 16A, IGBT

Package: TO-220AB Type

International Rectifier, a semiconductor company that specialized in power management technology, was acquired by Infineon Technologies AG in 2015.


IRG4BC30KD datasheet pinout


This is 600V, 16A, IGBT With Ultrafast Soft Recovery Diode. It is housed in a TO-220AB package, which provides good thermal dissipation and makes it easy to mount on a heatsink. It is commonly used in applications such as motor control circuits, power supplies, and welding equipment.


1. Latest generation 4 IGBTs offer highest power density motor controls possible

2. HEXFRED diodes optimized for performance with IGBTs. Minimized recovery characteristics reduce noise, EMI andswitching losses

3. This part replaces the IRGBC30KD2 and IRGBC30MD2 products


G4BC30KD datasheet pinout



1. High short circuit rating optimized for motor control, tsc=10µs, @360V VCE(start), TJ= 125°C,VGE= 15V

2. Combines low conduction losses with high switching speed

3. Tighter parameter distribution and higher efficiency than previous generations

4 IGBT co-packaged with HEXFRED ultrafast, ultrasoft recovery antiparallel diodes


Absolute Maximum Ratings (Ta = 25°C)

1. Collector to emitter voltage: Vces = 600 V

2. Gate to emitter voltage: Vges = ± 20 V

3. Collector current : Ic = 16 A (Tc = 100°C)

4. Collector dissipation : Pc = 100 W (Tc = 25°C)

5. Junction temperature : Tj = 150 °C

6. Storage temperature: Tstg = -55 to +150 °C



IRG4BC30KD Datasheet PDF


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