2SC3281 transistor
2SC3281 electrical specification
- 2SC3281 is an NPN triple diffused type POWER transistor device
- Collector to emitter voltage is 200V
- Collector to base voltage is 200V
- Emitter to base voltage is 5V
- Collector current is 15A
- Base current is 5A
- Power dissipation is 150W
- DC current gain is 55 to 160hFE
- Transition frequency (FT) is 25MHz
- Junction temperature & storage temperature is between -55 to +150℃
- Collector to emitter saturation voltage (VCE (SAT)) is5V
- Output capacitance (Cob) is 270pF
2SC43281 Pinout
| Pin Number | Pin Name | Description |
| 1 | Base | Base terminal is the trigger for the transistor |
| 2 | Collector (connected to mounting base) | Current flows through the collector |
| 3 | Emitter | Current flows through the emitter terminal |
2SC3281 package
2SC3281 is a silicon POWER transistor with have TO-3p package, it is a METAL CAN outer covering package.
TO-3P package is a two-terminal package and the collector terminal connection with the base, the material used to make the package will be made as a higher-temperature device.
The outer METAL covering CAN will act as the heat sink for the transistor device.
2SC3281 electrical specification & application notes
Here we explain the important electrical specifications of the 2SC3281 transistor, it is very helpful for a better understanding and the replacement process.
Voltage specs
The voltage specifications of the 2SC3281 transistor are collector to base voltage is 200V, collector-to-emitter voltage is 200V, and emitter to base voltage is 5V.
The collector-to-emitter saturation voltage value of the 2SC3281 transistor is 2.5V, it is the value for the switching of the device.
The voltage specs show it is a higher-voltage transistor used for higher-power applications.
Current specs
The current capacity of the transistor device shows the load-taking ability, the maximum collector current value of 2SC3281 is 15A.
The base current value of the 2SC3281 transistor is 1.5A, it is the maximum switching current of the device.
Dissipation specs
The power dissipation value of the 2SC3281 transistor is 150W, it is the product of voltage and current.
DC Current gain specs
The DC current gain value of the 2SC3281 transistor is 55 to 160hFE, it is the ability of a transistor for amplification.
Transition frequency
The transition frequency of the 2SC3281 transistor is 25MHz, and the frequency range of the device is important for all audio-related applications.
Junction temperature/ storage temperature
The junction temperature or storage temperature is -55 to 150℃, it is the maximum temperature capacity of the semiconductor device.
Output capacitance
The output capacitance of the 2SC3281 transistor is 270Pf.
2SC3281 DATASHEET
If you need the datasheet in pdf please click this link
2SC3281 equivalent
The 2SC3281 POWER transistor has equivalent transistors such as 2SC6011, 2SD1313, KTC5200, 2SC5242, 2SC5200, and KTC5242, each of these devices have the same set of electrical specifications.
This particular POWER transistor mainly has audio-related applications, so we need to check and verify the specifications such as voltage, current, and DC current gain.
2SC3281 complementary
The 2SC3281 NPN transistor has complementary PNP transistor type 2SA1302, both these transistors have the same and opposite set of electrical specifications, so we can use them in push-pull circuit applications.
2SC3281 vs 2SC5200 vs 2SC5242
Here we listed the electrical specifications of 2SC3281, 2SC5200, and 2SC5242 transistors, this listing comparison is really useful for a better understanding.
| Characteristics | 2SC3281 | 2SC5200 | 2SC5242 |
|---|---|---|---|
| Collector to base voltage (VCB) | 200V | 230V | 230V |
| Collector to emitter voltage (VCE) | 200V | 230V | 230V |
| Emitter to base voltage (VEB) | 5V | 5V | 5V |
| Collector to emitter saturation voltage (VCE (SAT)) | 2.5V | 0.4 to 3V | 0.4 to 3V |
| Collector current (IC) | 15A | 15A | 15A |
| Base current | 1.5A | 1.5A | 1.5A |
| Power dissipation | 150W | 150W | 130W |
| Junction temperature & operating temperature (TJ) | -55 to 150°C | -55 to +150°C | -55 to +150°C |
| Transition frequency (FT) | 25MHZ | 30MHz | 30MHz |
| Gain (hFE) | 55 to 160hFE | 55 to 150hFE | 55 to 160hFE |
| Output capacitance | 270pF | 200pF | 200pF |
| Package | TO-3P | TO-3P | TO-3P |
2SC3281 transistor application
- Power amplifier applications
- High-fidelity audio circuit
- High-frequency circuit
- Amplifier output stage applications
- Motor driver applications
- Driver load circuit applications
2SC3281 graphical characteristics
The graph shows the output characteristics of the 2SC3281 transistor, the graph plots with collector current vs collector to emitter voltage.
At different base current values, the collector current forms constant curves with respect to the collector-to-emitter voltage.
The graph shows the safe operating area characteristics of the 2SC3281 transistor, the graph plots with collector current vs collector to emitter voltage.
The characteristics of this graph indicated different specs such as switching limits, temperature, and resistance values with respect to graphical representation.
