
BUL128 Discrete Semiconductor Products |
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Allicdata Part #: | 497-12452-5-ND |
Manufacturer Part#: |
BUL128 |
Price: | $ 0.00 |
Product Category: | Discrete Semiconductor Products |
Manufacturer: | STMicroelectronics |
Short Description: | TRANS NPN 400V 4A TO-220 |
More Detail: | Bipolar (BJT) Transistor NPN 400V 4A 70W Through ... |
DataSheet: | ![]() |
Quantity: | 1000 |
Series: | -- |
Packaging: | Tube |
Part Status: | Obsolete |
Transistor Type: | NPN |
Current - Collector (Ic) (Max): | 4A |
Voltage - Collector Emitter Breakdown (Max): | 400V |
Vce Saturation (Max) @ Ib, Ic: | 500mV @ 1A, 4A |
Current - Collector Cutoff (Max): | 100µA |
DC Current Gain (hFE) (Min) @ Ic, Vce: | 14 @ 2A, 5V |
Power - Max: | 70W |
Frequency - Transition: | -- |
Operating Temperature: | 150°C (TJ) |
Mounting Type: | Through Hole |
Package / Case: | TO-220-3 |
Supplier Device Package: | TO-220AB |
Base Part Number: | BUL128 |
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BUL128 is a type of bipolar junction transistor (BJT) that is used in many applications and circuits. It is a two-terminal device and is commonly used in power amplifiers, interfaces, and linear applications. The BUL128 is composed of three elements, including the base, collector, and emitter. In order for the transistor to function properly, the base-emitter diode must be forward biased and the collector-emitter junction needs to be reverse biased.
The construction of a BUL128 transistor is slightly different than other BJTs. Instead of having a single base, the BUL128 has a double base that can be used for biasing the transistor. This makes it easier to control the current flow through the BJT. Additionally, the BUL128 is composed of a larger gate-to-emitter capacitance than other BJTs, which increases the frequency response of the transistor.
In order to operate properly, the BUL128 must be connected in a circuit that supplies the correct base current and handles the proper collector-emitter voltage. The collector-emitter voltage must be within the range of 21V-70V, while the base current must be within the range of 10mA-50mA. This ensures that the transistor can function correctly and efficiently.
The BUL128 can be used in many applications and circuits. It is commonly used in power amplifiers, interfaces, and linear applications. It is often used in audio equipment and power amplifiers, as it can efficiently handle both positive and negative voltages. Additionally, the high current gain and high frequency response of the BUL128 make it an ideal choice for high-speed logic circuits. The BUL128 is also used in radio receivers, video amplifiers, and switching circuits.
The working principle of the BUL128 is the same as other BJTs. When the base-emitter diode is forward biased, electrons are able to flow from the emitter to the base. This creates a small current in the base, which in turn causes the current flow in the collector-emitter circuit to increase. This increase in current creates a voltage drop across the collector-emitter circuit, increasing the voltage at the collector. The increased voltage in the collector circuit can then be harnessed to power other electronic devices and circuits.
Overall, the BUL128 is a versatile and reliable transistor that is suitable for many applications and circuits. It is composed of three elements and has a doubled base for increased control and frequency response. Additionally, the BUL128 is capable of handling both positive and negative voltages and reacting quickly to changes in the base current. Thanks to its high current gain and frequency response, the BUL128 is the perfect choice for many applications, including audio equipment, power amplifiers, and high-speed logic circuits.
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