What is BULB742C?


This is HIGH VOLTAGE FAST-SWITCHING NPN POWER TRANSISTOR.

A NPN transistor is a type of bipolar junction transistor (BJT) that consists of two p-type semiconductor materials separated by a single n-type material.
The NPN transistor is used to amplify or switch electronic signals and is widely used in many electronic circuits. It works by controlling the current flow between the collector and emitter terminals through the base terminal.


[PDF] Complete Technical Details can be found in the BULB742C datasheet provided at this page.

Summary in PDF File


BUL742C BULB742C High voltage fast switching NPN power transistor Features Low spread of dynamic parameters High voltage capability Minimum lot to lot spread for reliable operation Very high switching speed Applications Electronic ballast for fluorescent lighting Switch mode power supplies Description The devices are manufactured using high voltage multi epitaxial planar technology for high switching speeds and high voltage capability Thanks to an increased intermediate layer it has an intrinsic ruggedness which enables the transistor to withstand an high collector current level during breakdown condition without using the transil protection usually necessary in typical converters for lamp ballast TAB 3 2 1 TO 220 TAB 123 I PAK 3 2 1 TO 220FP TAB 3 1 D PAK Figure 1 Internal schematic diagram Table 1 Device summary Order codes Markings BUL742C BUL742C BUL742CFP BUL742CFP BULB742C 1 BULB742C BULB742CT4 BULB742C November 2010 Packages TO 2

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BULB742C


[ Detailed Data ]

Characteristics of NPN Transistors

1. Bipolar Junction: NPN transistors are bipolar junction transistors (BJT), meaning they have a structure consisting of three regions of alternating P-type and N-type semiconductors.

2. Current Amplification: NPN transistors are designed to amplify electrical current, and can be used in a wide range of electronic applications such as amplifiers, switches, and oscillators.

3. Forward Biased: In order to operate, the base-emitter junction of an NPN transistor must be forward biased, meaning that the base must be connected to a positive voltage relative to the emitter.

4. High Input Impedance: NPN transistors have a high input impedance, which means that they are less likely to draw current from the input source, and are therefore less likely to cause a drop in voltage across the source.

5. Inverted Output: NPN transistors are known for producing an inverted output relative to their input.

Manufacturers : STMicroelectronics

STM - BULB742C Datasheet PDF

STM BULB742C TRANSISTOR

HIGH VOLTAGE FAST-SWITCHING NPN POWER TRANSISTOR


Datasheet BULB742C PDF DownLoad ( STM )