
MJE13003 transistor specification
- 13003 or MJE13003 is an NPN BJT transistor
- DC Current Gain range is 8 to 40hFE
- Collector current (IC) is 1.5A
- Base current (IB) is 0.75A
- Collector to base Voltage (VCB) is 700V
- Collector to emitter voltage (VCE) is 400v
- Emitter to base voltage (VEB) is 9V
- Junction temperature (TJ) is 150°C
- Power dissipation at the transistor is 1.4W
- Transition frequency (FT) is 10MHz
MJE13003 transistor Pinout
Pin Number | Pin Name | Description |
1 | Base | The base terminal triggers the transistor |
2 | Collector | The current is flowing through the collector |
3 | Emitter | Current flows through the emitter |

MJE13003 transistor package
The transistor 13003 is been come up with a different package, commonly TO-225 and TO-126 packages
Both the component package is generally used for power components which can have the ability to handle higher power.
The TO-126 and TO-225 package is made up with epoxy and plastic material, the power capacity is quite high and a hole is at the package for attaching transistor with the heat sink.
MJE13003 transistor Description
13003 or MJE13003 transistor is NPN type, which can handle higher voltage and has high-speed switching operation.
The 13003 transistors have a higher voltage value at the collector to base of 700v and collector to emitter of 400v, this will make it at higher voltage applications.
Maximum current gain at the 13003 transistors is 8 to 40hFE, this value is more important at the amplifier and switching operations.
The power dissipation value for this transistor is noted 1.4W, it is a power transistor that had more applications at high voltage applications.
The transition frequency value at 13003 transistors is 10MHz, this frequency rating is great for a higher power fastest switching transistor.
MJE13003 transistor datasheet

If you need the datasheet in pdf please click this link
MJE13003 transistor Equivalent
The perfect equivalent transistors for 13003 are 5302D, BLD123D, BUJ101, STL128D, and HLD133D each one in this list is identical transistor for 13003.
But the electrical and physical specifications of most of the transistors in this list are slightly different, so at the replacement of the 13003 transistors, we need to check and verify the specifications for a safer outcome.
13003 vs 13007 vs 5302D vs BUW85
The below-listed transistor models are closely identical and replaceable with the 13003 transistors.
In this table, we try to compare the electrical characteristics of each 13003 vs 13007 and 5302D vs BUW85.
Characteristics | 13003 | 13007 | 5302D | BUW85 |
---|---|---|---|---|
Collector to base voltage (VCB) | 700V | 700V | 800V | 800V |
Collector to emitter voltage (VCE) | 400V | 400V | 400V | 400V |
Emitter to base voltage (VEB) | 9V | 9V | 10V | 1V |
Collector current (IC) | 1.5A | 8A | 1A | 2A |
Power dissipation | 1.4W | 80W | 1W | 50W |
Junction temperature (TJ) | 150°C | 150°C | 150°C | 150°C |
Transition frequency (FT) | 10MHZ | 14MHZ | - | 20MHZ |
Noise (N) | - | - | - | - |
Gain (hFE) | 8 to 40hFE | 5 TO 40hFE | 5 to 40hFE | 15 to 100Hfe |
Package | TO-225,TO-126 | TO-225 | TO-92,TO-251,TO-252 | TO-225 |
MJE13003 transistor uses
- Super-fast switching circuit
- Inverter circuits
- UPS circuits
- SMPS circuits
- Charger circuits
- Audio amplifier circuit
- Motor controller circuit
- Regulator circuits.
MJE13003 transistor inverter

The figure shows the main applications circuit using 13003 transistors, it is a simple model circuit of the inverter.
The circuit of two 13003 transistors is connected to a step-up transformer, we know 13003 is the fast switching transistor.
When the DC signal passes to the inverter network, the fast switching operation makes it an AC signal.
Then after passing the low voltage AC into the step-up transformer, it steps up the voltage range to a higher level.
MJE13003 transistor amplifier circuit

The figure shows the amplifier circuit using 13003 transistors, it is a simple amplifier circuit.
The preamplifier transistor handles the input audio signal and amplifies it to a level and passes over to the second stage.
Both the transistor amplification make the signal an amplified output and 13003 transistors as the amplifier is not a common thing.
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