Specifications
| Attribute | Value |
| Package / Case | Cut Tape (CT) |
| Part Status | Obsolete |
| Transistor Type | NPN - Darlington |
| Current - Collector(Ic)(Max) | 8 A |
| Voltage - Collector Emitter Breakdown(Max) | 100 V |
| Vce Saturation(Max) @ Ib Ic | 2V @ 15mA, 4A |
| Current - Collector Cutoff(Max) | 10µA |
| DC Current Gain(h FE)(Min) @ Ic Vce | 1000 @ 4A, 4V |
| Power - Max | 20 W |
| Frequency - Transition | 4MHz |
| Operating Temperature | -65°C ~ 150°C (TJ) |
| Mounting Type | Surface Mount |
Overview
Description
The MJD122T4 is a high-performance NPN bipolar junction transistor (BJT) designed for power amplification and switching applications. Key features include:
- High current capability (up to 8A collector current).
- High voltage tolerance (100V collector-emitter voltage).
- Fast switching speed, making it suitable for motor control, power supplies, and inverters.
- Low saturation voltage, improving efficiency in switching circuits.
Packaged in a TO-252 (DPAK) for efficient heat dissipation, it is commonly used in automotive, industrial, and consumer electronics. Always refer to the datasheet for precise specifications and thermal management guidelines.
- High current capability (up to 8A collector current).
- High voltage tolerance (100V collector-emitter voltage).
- Fast switching speed, making it suitable for motor control, power supplies, and inverters.
- Low saturation voltage, improving efficiency in switching circuits.
Packaged in a TO-252 (DPAK) for efficient heat dissipation, it is commonly used in automotive, industrial, and consumer electronics. Always refer to the datasheet for precise specifications and thermal management guidelines.
Equivalent
The MJD122T4 is a PNP bipolar transistor (BJT) in a DPAK package. Equivalent or similar products include:
- MJD127T4 (higher current rating)
- TIP42C (similar PNP transistor, TO-220 package)
- BD140 (medium-power PNP, TO-126 package)
- 2SB772 (general-purpose PNP alternative)
Check datasheets for exact specs like voltage, current, and gain (hFE) to ensure compatibility.
- MJD127T4 (higher current rating)
- TIP42C (similar PNP transistor, TO-220 package)
- BD140 (medium-power PNP, TO-126 package)
- 2SB772 (general-purpose PNP alternative)
Check datasheets for exact specs like voltage, current, and gain (hFE) to ensure compatibility.
Manufacturer
The MJD122T4 is a PNP bipolar junction transistor (BJT) manufactured by ON Semiconductor, now known as onsemi after rebranding in 2021.
onsemi is a global semiconductor company specializing in power management, analog, and sensor technologies. It serves industries like automotive, industrial, and consumer electronics, focusing on energy-efficient solutions. The company was originally part of Motorola before becoming independent in 1999.
The MJD122T4 is commonly used in switching and amplification applications, reflecting onsemi's expertise in reliable power components.
onsemi is a global semiconductor company specializing in power management, analog, and sensor technologies. It serves industries like automotive, industrial, and consumer electronics, focusing on energy-efficient solutions. The company was originally part of Motorola before becoming independent in 1999.
The MJD122T4 is commonly used in switching and amplification applications, reflecting onsemi's expertise in reliable power components.
Application
The MJD122T4 is a PNP bipolar junction transistor (BJT) commonly used in:
1. Switching Circuits – For load control in relays, LEDs, and motors.
2. Amplification – In audio and signal amplification stages.
3. Power Management – Voltage regulation and DC-DC converters.
4. Automotive Electronics – Engine control, lighting, and power distribution.
5. Consumer Electronics – Power supplies and driver circuits.
Its high current (5A) and voltage (100V) ratings make it suitable for medium-power applications requiring efficient switching or amplification.
1. Switching Circuits – For load control in relays, LEDs, and motors.
2. Amplification – In audio and signal amplification stages.
3. Power Management – Voltage regulation and DC-DC converters.
4. Automotive Electronics – Engine control, lighting, and power distribution.
5. Consumer Electronics – Power supplies and driver circuits.
Its high current (5A) and voltage (100V) ratings make it suitable for medium-power applications requiring efficient switching or amplification.
Package
The MJD122T4 is a TO-252 (DPAK) surface-mount package. It features a compact design with a heat-dissipating tab, commonly used for power transistors. The package dimensions are approximately 6.5mm x 6.1mm x 2.3mm, suitable for high-current applications.
