Overview
The MJF122G is a power NPN Darlington bipolar transistor manufactured by ON Semiconductor. This transistor is designed for general-purpose amplifiers and switching applications, particularly where electrical isolation between the mounting surface of the device and the heatsink or chassis is required. It offers high current gain and is suitable for a variety of high-speed switching and amplification tasks.
Key Specifications
| Parameter | Value |
|---|---|
| Transistor Type | NPN Darlington |
| Maximum Collector Emitter Voltage (VCEO) | 100 V |
| Maximum Continuous Collector Current (IC) | 5 A |
| Maximum Emitter Base Voltage (VBE) | 5 V |
| Minimum DC Current Gain (hFE) | 1000 @ 500 mA @ 3 V, 2000 @ 3 A @ 3 V |
| Maximum Collector Emitter Saturation Voltage (VCE(sat)) | 2 V @ 12 mA @ 3 A, 3.5 V @ 20 mA @ 5 A |
| Maximum Power Dissipation (Pd) | 2 W |
| Operating Temperature Range | -65°C to +150°C |
| Package Type | TO-220FP |
| Mounting Type | Through Hole |
| Pin Count | 3 |
| Dimensions | 10.63 x 4.9 x 16.12 mm |
Key Features
- High DC current gain of up to 2000, making it suitable for high-gain applications.
- Electrically isolated package, ideal for applications where the mounting surface needs to be isolated from the heatsink or chassis.
- No isolating washers required, reducing system cost.
- Low saturation voltage, enhancing performance in switching circuits.
- UL recognized for 3500 VRMS isolation, ensuring safety and reliability.
- Pb-free packages available, aligning with environmental regulations.
Applications
The MJF122G is versatile and can be used in various applications, including:
- General-purpose amplifiers and switching circuits.
- High-speed switching applications due to its low saturation voltage.
- Drivers and other power management circuits.
- Automotive and industrial control systems where high current gain and isolation are necessary.
Q & A
- What is the maximum collector current of the MJF122G transistor?
The maximum continuous collector current is 5 A.
- What is the maximum collector emitter voltage of the MJF122G?
The maximum collector emitter voltage is 100 V.
- What is the minimum DC current gain of the MJF122G?
The minimum DC current gain is 1000 @ 500 mA @ 3 V and 2000 @ 3 A @ 3 V.
- What is the maximum power dissipation of the MJF122G?
The maximum power dissipation is 2 W.
- What is the operating temperature range of the MJF122G?
The operating temperature range is -65°C to +150°C.
- What type of package does the MJF122G come in?
The MJF122G comes in a TO-220FP package.
- Is the MJF122G Pb-free?
- What are some common applications of the MJF122G?
- Does the MJF122G require isolating washers?
- Is the MJF122G UL recognized?
