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2N3055

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Manufacturer Part Number: 2N3055
Brand: Sptech
Package / Case: TO-3
Category: Discrete Semiconductor
Voltage - Collector Emitter Breakdown (Max): 70V
Vce Saturation (Max) @ Ib, Ic: 3V @ 3.3A, 10A
Transistor Type: NPN
Supplier Device Package: TO-3
Series: -
Power - Max: 115W
Other Names: 2N3055 PBFREE 2N3055CS
Operating Temperature: -65°C ~ 200°C (TJ)
Mounting Type: Through Hole
Manufacturer Standard Lead Time: 16 Weeks
Lead Free Status / RoHS Status: Lead free / RoHS Compliant
Frequency - Transition: 2.5MHz
Detailed Description: Bipolar (BJT) Transistor NPN 70V 15A 2.5MHz 115W Through Hole TO-3
DC Current Gain (hFE) (Min) @ Ic, Vce: 20 @ 4A, 4V
Current - Collector Cutoff (Max): 700μA
Current - Collector (Ic) (Max): 15A

Model comparison: 2N3055 vs 3DD15 comparison

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Web Site	Package	Brand	Est. Market Price	Description
Texas Instruments (TI)	DIP-18	STMicro electronics	$2.55	单电源双运算放大器，电源范围3V至32V，短路保护输出单电源双运算放大器，电源范围3V至32V，短路保护输出
STMicroelectronics (ST)	DIP-18	STMicro electronics	$2.55	单电源双运算放大器，电源范围3V至32V，短路保护输出单电源双运算放大器，电源范围3V至32V，短路保护输出
DigiKey	DIP-18	STMicro electronics	$2.55	单电源双运算放大器，电源范围3V至32V，短路保护输出单电源双运算放大器，电源范围3V至32V，短路保护输出
Mouser	DIP-18	STMicro electronics	$2.55	单电源双运算放大器，电源范围3V至32V，短路保护输出单电源双运算放大器，电源范围3V至32V，短路保护输出
RS America	DIP-18	STMicro electronics	$2.55	单电源双运算放大器，电源范围3V至32V，短路保护输出单电源双运算放大器，电源范围3V至32V，短路保护输出

The parameters and performance indicators of this product are sourced from the internet. In case of discrepancies, please refer to the manufacturer's technical specifications!！

Product Attributes

Parameter	Symbol	Min	Typical	Max	Unit
Collector-Emitter Voltage	V_CEO	-	-	60	V
Collector-Base Voltage	V_CBO	-	-	100	V
Emitter-Base Voltage	V_EBO	-	-	7	V
Continuous Collector Current	I_C	-	-	15	A
Peak Collector Current	I_C(peak)	-	-	30	A
Power Dissipation	P_T	-	-	115	W
Junction Temperature	T_J	-20	-	150	°C
Storage Temperature	T_STG	-65	-	150	°C
Thermal Resistance (J-C)	R_θJC	-	-	1.55	°C/W
Transition Frequency	f_T	-	2.5	-	MHz

Instructions for Use:

Heat Sinking:
- The 2N3055 is designed to handle high power dissipation, but it requires an adequate heat sink to prevent overheating. Ensure the junction temperature does not exceed 150°C.
- Use thermal compound between the transistor and the heat sink to improve thermal conductivity.
Biasing:
- Proper biasing is crucial to avoid thermal runaway. Use a stable base current to maintain the collector current within safe limits.
- For linear applications, ensure the transistor operates in the active region to avoid saturation or cutoff.
Voltage Ratings:
- Do not exceed the maximum ratings for collector-emitter voltage (V_CEO), collector-base voltage (V_CBO), and emitter-base voltage (V_EBO).
- Exceeding these ratings can cause immediate damage to the transistor.
Current Handling:
- The continuous collector current (I_C) should not exceed 15A. For peak currents up to 30A, ensure the pulse duration is short and the average power dissipation is within limits.
- Use appropriate fuses or current-limiting resistors to protect the transistor from overcurrent conditions.
Mounting:
- Mount the 2N3055 securely to the heat sink using the provided mounting hardware. Ensure the transistor is properly aligned and tightened to avoid mechanical stress.
- Avoid applying excessive torque to the mounting screws to prevent damage to the transistor.
Storage:
- Store the 2N3055 in a dry, cool environment with temperatures between -65°C and 150°C.
- Handle the transistor with care to avoid static discharge, which can damage the device.
Testing:
- Before installing the transistor in a circuit, test its parameters using a multimeter or a dedicated transistor tester to ensure it meets the specified ratings.
- Check for proper operation by measuring the base-emitter and base-collector voltages under controlled conditions.

By following these guidelines, you can ensure reliable and efficient operation of the 2N3055 transistor in your applications.

(For reference only)

DESCRIPTION

The CENTRAL SEMICONDUCTOR 2N3055 and MJ2955 are complementary silicon power transistors manufactured by the epitaxial base process, mounted in a hermetically sealed metal case, designed for general purpose switching and amplifier applications.

APPLICATIONS

Designed for general-purpose switching and amplifier applications

QUANTITY	UNIT PRICE	PLUS UNIT PRICE	TOTAL PRICE
≥1:	US $3.72664	US $3.50304	US $3.50304
≥5:	US $2.48442	US $2.33535	US $11.67675
≥10:	US $2.23598	US $2.10183	US $21.01830
≥20:	US $2.17387	US $2.04344	US $40.86880
≥50:	US $2.11176	US $1.98506	US $99.25300
≥100:	US $1.87884	US $1.76611	US $176.61100
≥200:	US $1.82191	US $1.71259	US $342.51800
≥500:	US $1.79914	US $1.69119	US $845.59500
≥1000:	US $1.76497	US $1.65907	US $1659.07000

Substitute (equivalent) Product

Product Name	Description
2SD1468	NPN Silicon Power Transistor, similar to 2N3055 in power handling and voltage ratings.
TIP3055	NPN Silicon Power Transistor, designed as a direct replacement for 2N3055 with improved thermal characteristics.
MJ2955	PNP Complementary Transistor to 2N3055, often used in push-pull amplifier configurations.
KS973	NPN Silicon Power Transistor, suitable for high-power audio amplifiers, similar to 2N3055.
2N5302	NPN Silicon Power Transistor, commonly used in power supply circuits, similar in performance to 2N3055.

Product Usage

The 2N3055 is a popular NPN silicon power transistor that has been widely used in various electronic circuits due to its robustness and ability to handle high current and power levels. Here are some common applications and circuits where the 2N3055 is often found:

Power Amplifiers:
- Audio Amplifiers: The 2N3055 is frequently used in audio amplifiers, particularly in the output stage, to drive speakers. It can handle the high currents required for driving low-impedance loads.
- RF Amplifiers: In some radio frequency (RF) applications, the 2N3055 can be used to amplify signals at higher power levels.
Motor Control:
- DC Motor Drivers: The 2N3055 can be used to control DC motors by switching large currents on and off. It is often used in conjunction with other components like diodes to protect against back EMF.
- Stepper Motor Drivers: In stepper motor control circuits, the 2N3055 can be used to provide the necessary current to the motor coils.
Switching Applications:
- Relay Drivers: The 2N3055 can be used to drive relays that require high current to operate.
- Load Switching: It can be used to switch high-power loads, such as lights or heaters, in industrial and automotive applications.
Power Supplies:
- Linear Regulators: In linear power supplies, the 2N3055 can be used as a pass transistor to regulate the output voltage.
- Switching Power Supplies: While less common, the 2N3055 can sometimes be used in the control circuitry of switching power supplies.
Inverters:
- DC to AC Inverters: The 2N3055 can be used in inverter circuits to convert DC power to AC power, often in conjunction with other transistors or MOSFETs.
Heating Elements:
- Resistance Heating: The 2N3055 can be used to control heating elements in appliances like water heaters or space heaters.
Educational and Hobby Projects:
- DIY Amplifiers: Enthusiasts and hobbyists often use the 2N3055 in DIY audio amplifier projects due to its availability and ease of use.
- Robotics: In simple robotics projects, the 2N3055 can be used to drive motors or other high-current devices.

Key Specifications:

Maximum Collector-Emitter Voltage (Vce): 60V
Maximum Collector Current (Ic): 15A
Maximum Power Dissipation (Ptot): 115W (at 25°C)
Maximum Operating Temperature: 150°C

Important Considerations:

Heat Sinking: Due to its high power handling capabilities, the 2N3055 often requires a heat sink to dissipate the heat generated during operation.
Protection Circuits: To ensure reliable operation, it is important to include protection circuits such as flyback diodes for inductive loads and thermal protection to prevent overheating.

The 2N3055 is a versatile component that has stood the test of time and continues to be a valuable choice for many high-power applications.

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2N3055

2N3055 has several brands around the world that may have alternate names for 2N3055 due to regional differences or acquisition. 2N3055 may also be known as the following names:

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