how to Make Simple Amplifier at home
The MJE3055T is a Jedec TO-220 silicon epitaxial-base NPN transistor. This article is going to introduce pinout, features, and more details about MJE3055T.
The MJE3055T is a Jedec TO-220 silicon epitaxial-base NPN transistor. This article is going to introduce pinout, features, and more details about MJE3055T.
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Mar 31, 2022
Elroy Forster
how to Make Simple Amplifier at home
The MJE3055T is a Jedec TO-220 silicon epitaxial-base NPN transistor. This article is going to introduce pinout, features, and more details about MJE3055T.
The MJE3055 is a Jedec TO-220 silicon Epitaxial-Base NPN transistor. Power switching circuits and general-purpose amplifiers are among the applications. MJE2955T is the complementary PNP type.
The following figure is the Pinout of MJE3055.

Pinout
| Pin Number | Pin Name |
| 1 | Base |
| 2 | Collector |
| 3 | Emitter |
| 4 | Case (Collector) |

Footprint

3D Model
• DC Current Gain Specified to 10 Amperes
• High Current Gain — Bandwidth Product — fT = 2.0 MHz (Min) @ IC = 500 mAdc
• Type Designator: MJE3055T
• Material of Transistor: Si
• Polarity: NPN
• Maximum Emitter-Base Voltage |Veb|: 5 V
STMicroelectronics MJE3055T technical specifications, attributes, parameters and parts with similar specifications to STMicroelectronics MJE3055T.
| Product Attribute | Attribute Value | |
|---|---|---|
| Factory Lead Time | 8 Weeks | |
| Mount | Through Hole | |
| Mounting Type | Through Hole | |
| Package / Case | TO-220-3 | |
| Contact Plating | Tin | |
| Number of Pins | 3Pins | |
| Weight | 4.535924g | |
| Transistor Element Material | SILICON | |
| Power Dissipation (Max) | 75W | |
| Number of Elements | 1 Element | |
| Collector-Emitter Breakdown Voltage | 60V | |
| Collector-Emitter Saturation Voltage | 1.1V | |
| Frequency - Gain Bandwidth Product (GBP) | 2MHz | |
| hFEMin | 20 | |
| Operating Temperature | 150°C TJ | |
| Packaging | Tube |
| Product Attribute | Attribute Value | |
|---|---|---|
| JESD-609 Code | e3 | |
| Part Status | Active | |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | |
| Number of Terminations | 3Terminations | |
| ECCN Code | EAR99 | |
| Voltage - Rated DC | 60V | |
| Current Rating | 10A | |
| Frequency | 2MHz | |
| Base Part Number | MJE305 | |
| Element Configuration | Single | |
| Power Dissipation | 75W | |
| Transistor Application | SWITCHING | |
| Polarity/Channel Type | NPN | |
| Transistor Type | NPN | |
| Collector Emitter Voltage (VCEO) | 60V | |
| Max Collector Current | 10A |
| Product Attribute | Attribute Value | |
|---|---|---|
| DC Current Gain (hFE) (Min) @ Ic, Vce | 20 @ 4A 4V | |
| Current - Collector Cutoff (Max) | 700μA | |
| Vce Saturation (Max) @ Ib, Ic | 8V @ 3.3A, 10A | |
| Transition Frequency | 2MHz | |
| Collector Base Voltage (VCBO) | 70V | |
| Emitter Base Voltage (VEBO) | 5V | |
| VCEsat-Max | 8 V | |
| Height | 9.15mm | |
| Length | 10.4mm | |
| Width | 4.6mm | |
| REACH SVHC | No SVHC | |
| Radiation Hardening | No | |
| RoHS Status | ROHS3 Compliant | |
| Lead Free | Lead Free |
1.
MJE3055 is a fixed 5V regulator circuit that might provide a simple solution for one transistor. The output voltage – threshold voltage transistor's Zener voltage is calculated using the formula 5 V Regulator Schematic. It has to do with electronics projects, namely a simple 5V regulator circuit.

5 V Regulator Schematic
2. The following figure is the Alarm Monitoring Circuit of MJE3055.

Alarm monitoring – Great alarm monitoring circuit using MJE2955, MJE3055
MJE1101, MJE1102, MJE1103, MJE1123, MJE12007, MJE1290, MJE2955
| Part Number | Description | Manufacturer |
| MJE3055TJ69ZTRANSISTORS | Power Bipolar Transistor, 1-Element, Silicon, TO-220AB, Plastic/Epoxy, 3 Pin, TO-220, 3 PIN | Fairchild Semiconductor Corporation |
| MJE3055TTRANSISTORS | Bipolar Power Transistor, NPN, 10 A, 60 V, 75 Watt, TO-220 3 LEAD STANDARD, 50-TUBE | onsemi |
| MJE3055TTUTRANSISTORS | Bipolar Power Transistor, NPN, 10 A, 60 V, 75 Watt, 1000-TUBE | onsemi |
| MJE3055TGTRANSISTORS | Bipolar Power Transistor, NPN, 10 A, 60 V, 75 Watt, TO-220 3 LEAD STANDARD, 50-TUBE | onsemi |
• Power Switching Circuits
• General-Purpose Amplifiers
The Package of MJE3055 is shown as follows.

Package
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Download datasheets and manufacturer documentation for MJE3055T
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