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Description
Bipolar Junction Transistor, NPN Type, TO-247VAR
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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!！
| Parameter | Symbol | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Collector-Emitter Voltage | VCE | - | - | 80 | V |
| Collector-Base Voltage | VCB | - | - | 80 | V |
| Emitter-Base Voltage | VEB | -5 | - | 5 | V |
| Collector Current | IC | - | 15 | 15 | A |
| Base Current | IB | - | 3 | 3 | A |
| Power Dissipation | PT | - | - | 90 | W |
| Junction Temperature | TJ | -55 | - | 150 | °C |
| Storage Temperature | TSTG | -65 | - | 150 | °C |
| Thermal Resistance | RθJC | - | - | 1.5 | °C/W |
Mounting:
Biasing:
Voltage Ratings:
Current Handling:
Temperature Management:
Handling:
Testing:
Features
● VCBO Collector-base voltage Open emitter 200V
● VCEO Collector-emitter voltage Open base 200V
● VEBO Emitter-base voltage Open collector 5V
● IC Collector current 15A
● IB Base current 1.5A
● PC Collector power dissipation TC=25℃ 150W
● Tj Junction temperature 150℃
● Tstg Storage temperature -55~150℃
Description
Transistor is a semiconductor device that is used for switching or amplification of electrical signals and have at least three terminals. Power transistors are devices which are designed to withstand large currents and are thus used in power intensive applications.
2SC3281 is a silicon NPN power transistor. Transistors are generally manufactured from pure silicon or germanium however IC 2SC3281 is manufactured using silicon, these type of transistors are called bipolar junction transistors because they can conduct using both types of charge carriers. IC under reference is in NPN configuration which means it has N-type emitter, collector and P-type base.
Pictorial View
A pictorial view of the IC 2SC3281 is shown in figure below
IC 2SC3281 is available with TO-3PL package and it can complement to IC 2SA1302 which is a high power PNP silicon transistor.
Pin Description
Pin description of the IC 2SC3281 is given below
Pin | Description | Doping |
1 | Base | P- type |
2 | Collector | N-type |
3 | Emitter | N-type |
IC Electrical Characteristics/ Specifications
IC 2SC3281 is available as single discrete electrical component (transistor), IC can be mounted on printed circuit boards in through hole configuration. Some core parameters of the IC are given below
Parameter | Description | Value |
Transistor type | NPN | - |
Material | Silicon | - |
IC | Collector current | 15A |
IB | Base current | 1.5A |
Power | Max Power | 150W |
hFE | DC current gain | 55-160 |
fT | Transition frequency | 25MHz |
VCBO | Collector-base voltage (Open emitter) | 200V |
VCEO | Collector-emitter voltage (Open base) | 200V |
VEBO | Emitter-base voltage (Open collector) | 5V |
Tstg | Storage temperature | -55~150 |
Working Principle
Since IC 2SC3281 is a NPN transistor, transistors can be used as switching device or as an amplifier depending upon the requirement of the user. To use the transistor as switch, it has to be operated in cut-off or in saturation region of its characteristic curve, which represents the OFF and ON switch accordingly. In order to use the transistor as an amplifier it has to be so biased that the operates in the active region of its characteristic curve.
Applications
IC 2SC3281 Silicon NPN power transistor IC is widely used for the following applications
● Power amplifier
● General purpose amplifier
● 100W high fidelity audio frequency amplifier output stage
● Switching applications
As Switch
Transistors can be used as a switch, similarly IC 2SC3281 can also be used as a switch. As described earlier to use a transistor as a switch it has to be operated in cutoff and saturation region.
Transistor utilized as switch in grounded emitter configuration is shown in figure. When switch “S” is closed a signal is applied to base of the transistor and it begins to conduct, transistor will be operating in saturation mode. The load connected to the collector terminal of the IC 2SC3281 will being to operate. It is important to note here, since the maximum current rating of IC 2SC3281 is 15A, a load having current rating of more than 15A should not be directly used with transistor.
As Amplifier
IC 2S3281 is a power transistor, it is used in high power applications specially in high power amplifiers. A 100-watt power amplifier by MOTOROLA using IC 2SC3281 is shown in figure above. The input stage of the circuit consists of the complementary pair transistors, second stage provides the initial voltage gain also called trans conductance stage and finally IC 2SC3281 is employed to achieve the power gain of up to 100watts
| QUANTITY | UNIT PRICE | PLUS UNIT PRICE | TOTAL PRICE |
|---|---|---|---|
| ≥1: | US $1.75266 | US $1.64750 | US $1.64750 |
| ≥51: | US $1.61634 | US $1.51936 | US $77.48736 |
Substitute (equivalent) Product
| Substitute Product | Brief Description |
|---|---|
| 2SC3281 | Original NPN transistor with low distortion and a high power output for audio applications. |
| 2SC5200 | NPN transistor with similar power and high-frequency response, ideal for audio power amplifiers. |
| 2SC2922 | High power NPN transistor with excellent high-frequency performance, suitable for power amplifiers. |
| 2SC5242 | Powerful NPN transistor for high-power audio applications, known for reliability and low distortion. |
| MJ21194 | High-power NPN transistor with wide frequency bandwidth, commonly used in audio circuits. |
| BD249C | NPN power transistor used in general-purpose and audio amplifier applications with good durability. |
| NJW0281G | Modern NPN transistor designed for high-fidelity audio applications and high efficiency. |
| TIP35C | NPN power transistor used for general-purpose power amplification with high current capacity. |
Product Usage
The 2SC3281 is an NPN power transistor commonly used in various high-power amplification applications. Here are a few types of circuits where this transistor might be utilized:
Audio Power Amplifiers:
Linear Power Supplies:
DC-DC Converters:
RF Amplifiers:
Motor Control Circuits:
Inverters and UPS Systems:
Switching Regulators:
When using the 2SC3281, it is essential to check its specifications such as the maximum collector current (IC), maximum collector-emitter voltage (VCE), power dissipation, and gain characteristics to ensure it matches the requirements of the circuit in question. Proper thermal management is also crucial due to the high power levels typically involved.
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| Flag | Country | Estimated Delivery Time | Minimum First Weight Cost | ||
|---|---|---|---|---|---|
| Express | Standard Shipping | Express (0.5kg) | Standard Shipping (0.05kg) | ||
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Returns are normally accepted when completed within 90 days from the date of the parcel delivered.
Defective ( Please provide a third party quality report of nonconforming products)
Return Freight charges must be prepaid; we will not accept COD shipments.
Warranty
All UTSOURCE purchases have a 90 days money back return policy, plus a 100 days UTSOURCE warranty against any manufacturing defects.This warranty shall not apply to any item where defects have been caused by improper customer assembly, failure by customer to follow instructions, product modification, negligent or improper operation.
2SC3281
2SC3281 has several brands around the world that may have alternate names for 2SC3281 due to regional differences or acquisition. 2SC3281 may also be known as the following names:
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