Introduction
The MJE13007 is a high-voltage, high-speed NPN power transistor commonly used in switching power supplies, inverter circuits, and high-frequency applications. Designed in the TO-220 package, it offers a balance of high voltage handling, fast switching capability, and reliable thermal dissipation. Its ability to withstand collector-emitter voltages up to 400V and handle continuous collector currents of 8A makes it a popular choice in SMPS (Switched-Mode Power Supplies) and energy-efficient lighting circuits.

One of the main advantages of the MJE13007 transistor is its rugged performance in demanding environments. It can operate efficiently in circuits that require high switching speeds and can handle rapid voltage transitions without compromising stability. This makes it particularly suitable for flyback converters, inverter designs, and horizontal deflection circuits in CRT displays.
MJE13007 NPN Power Transistor

The MJE13007 NPN power transistor is widely used in low-cost power supply units, CFL/LED drivers, and general-purpose electronic devices. Its combination of fast switching, high breakdown voltage, and efficient thermal management makes it a versatile and cost-effective solution for both consumer electronics and industrial power systems.
MJE13007 Pinout

MJE13007 Pin Configuration
Pin# | Pin Name | Pin Description |
---|---|---|
1 | Base (B) | Controls transistor switching |
2 | Collector (C) | Connected to load or power input |
3 | Emitter (E) | Current output terminal (ground return) |
Key Features
- High voltage capability up to 400V, ideal for SMPS and inverter designs.
- Fast switching response, suitable for high-frequency applications.
- Durable TO-220 package for efficient heat dissipation.
- Designed for rugged, reliable performance in harsh operating conditions.
- Widely available and cost-effective for consumer and industrial power electronics.
Characteristics
- Transistor Type: NPN Power Transistor
- Package: TO-220
- Collector-Emitter Voltage (Vce): 400V
- Collector-Base Breakdown Voltage (Vcb): 700V
- Emitter-Base Voltage (Veb): 9V
- Collector Current (Ic): 8A continuous
- Power Dissipation (Pd): 80W
- DC Current Gain (hFE): 8 – 40 (depending on Ic and Vce)
- Transition Frequency (ft): 4 MHz (typical)
- Junction Temperature (Tj): 150°C max
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Key Applications of MJE13007 NPN Power Transistor
- Switching power supplies (SMPS).
- CFL and LED lamp drivers.
- Inverter circuits for renewable energy and UPS systems.
- Horizontal deflection circuits in CRT displays.
- High-frequency DC-DC converters.
- Motor control circuits in small appliances.
PNP Complimentary Transistor
A true PNP complementary isn’t officially provided for the MJE13007 in the same “MJE13xxx” family.
- The MJE13007 (NPN) does not have a widely used, direct PNP complementary pair in the same family.
- In practical designs, when a complementary PNP is needed, engineers use other high-voltage PNP transistors (like MJE350, MJE15033, or 2N5401 depending on the circuit requirements).
- The MJE13007 is mostly used in switching power supplies (SMPS) where complementary PNP devices are rarely paired with it because the topology usually uses NPN switches.
Equivalent of MJE13007 NPN Power Transistor
- MJE13009 (higher current capability alternative).
- 2SC13007 (direct equivalent, widely available).
- MJE13005 (lower power variant).
- BU508A (alternative for high-voltage switching).
- 2SC2625 (NPN high-voltage fast switching transistor).
(Pin configuration of some transistors mentioned above may different from MJE13007).
Comparison between MJE13005, MJE13007, and MJE13009
- MJE13005 → Best for low-power switching applications such as CFL drivers and smaller power supplies.
- MJE13007 → A mid-range option, capable of handling 8A current and 80W power, making it the most commonly used in SMPS, inverter circuits, and lighting drivers.
- MJE13009 → A higher-power alternative, with 12A current handling and up to 130W dissipation, suitable for high-power inverters, industrial SMPS, and demanding switching applications.
- Choose MJE13005 for small/low-power designs.
- Choose MJE13007 for balanced performance in medium-power designs.
- Choose MJE13009 for high-power, industrial-grade designs.
Conclusion
The MJE13007 Transistor (TO-220) is a rugged, high-voltage, and fast-switching device widely used in SMPS, inverter circuits, CFL drivers, and industrial power electronics. With its 400V voltage rating, 8A current handling, and efficient thermal dissipation, it provides a cost-effective solution for designers looking for reliability and performance in high-frequency and high-voltage applications.
Datasheet of MJE13007 NPN Power Transistor
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