Overview
The BD438STU is a PNP power bipolar junction transistor manufactured by onsemi. This transistor is part of the BD436G, BD438G, BD440G, and BD442G series, known for their medium-power capabilities and versatility in various applications. The BD438STU is housed in the TO-126 package and is designed for general-purpose amplifier and switching applications.
Key Specifications
| Characteristic | Symbol | Value | Unit |
|---|---|---|---|
| Collector-Emitter Voltage | VCEO | 45 | Vdc |
| Collector-Base Voltage | VCBO | 45 | Vdc |
| Emitter-Base Voltage | VEBO | 5.0 | Vdc |
| Collector Current | IC | 4.0 | Adc |
| Base Current | IB | 1.0 | Adc |
| Total Device Dissipation | PD | 36 | W |
| Operating and Storage Junction Temperature Range | TJ, Tstg | –55 to +150 | °C |
| Thermal Resistance, Junction-to-Case | RJC | 3.5 | °C/W |
| DC Current Gain (IC = 10 mA, VCE = 5.0 V) | hFE | 40 | |
| Transition Frequency (VCE = 1.0 V, IC = 250 mA, f = 1.0 MHz) | fT | 3.0 | MHz |
| Collector Saturation Voltage (IC = 2.0 A, IB = 0.2 A) | VCE(sat) | 0.5 | Vdc |
| Base-Emitter On Voltage (IC = 2.0 A, VCE = 1.0 V) | VBE(ON) | 1.1 | Vdc |
Key Features
- Pb-Free and RoHS Compliant, ensuring environmental compliance and safety.
- Medium-power PNP bipolar junction transistor suitable for amplifier and switching applications.
- High collector current of up to 4 A and collector-emitter voltage of up to 45 V.
- DC current gain (hFE) of 40 at IC = 10 mA and VCE = 5.0 V.
- Transition frequency (fT) of 3.0 MHz, indicating good high-frequency performance.
- Low collector saturation voltage (VCE(sat)) of 0.5 V at IC = 2.0 A and IB = 0.2 A, ensuring efficient operation.
Applications
- General-purpose amplifier applications, including audio amplifiers and signal amplifiers.
- Switching applications, such as in power supplies, motor control circuits, and other high-current switching circuits.
- Automotive and industrial control systems where high reliability and medium power handling are required.
Q & A
- What is the maximum collector-emitter voltage of the BD438STU transistor?
The maximum collector-emitter voltage (VCEO) of the BD438STU transistor is 45 Vdc.
- What is the maximum collector current of the BD438STU transistor?
The maximum collector current (IC) of the BD438STU transistor is 4.0 Adc).
- Is the BD438STU transistor RoHS compliant?
- What is the typical DC current gain (hFE) of the BD438STU transistor?
The typical DC current gain (hFE) of the BD438STU transistor is 40 at IC = 10 mA and VCE = 5.0 V).
- What is the transition frequency (fT) of the BD438STU transistor?
The transition frequency (fT) of the BD438STU transistor is 3.0 MHz at VCE = 1.0 V, IC = 250 mA, and f = 1.0 MHz).
- What are the typical operating temperatures for the BD438STU transistor?
The operating and storage junction temperature range for the BD438STU transistor is –55 to +150 °C).
- What is the thermal resistance, junction-to-case (RJC) of the BD438STU transistor?
The thermal resistance, junction-to-case (RJC) of the BD438STU transistor is 3.5 °C/W).
- What are some common applications of the BD438STU transistor?
The BD438STU transistor is commonly used in general-purpose amplifier and switching applications, including audio amplifiers, power supplies, and industrial control systems).
- Is the BD438STU transistor suitable for high-frequency applications?
- What is the collector saturation voltage (VCE(sat)) of the BD438STU transistor?
The collector saturation voltage (VCE(sat)) of the BD438STU transistor is 0.5 V at IC = 2.0 A and IB = 0.2 A).
