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Product Detailed Parameters
- Description：TRANS 2NPN 45V 30MA TO-78-6
- Series：-
- Mfr：Central Semiconductor Corp
- Package：Bulk
- Transistor Type：2 NPN (Dual)
- Current - Collector (Ic) (Max)：30mA
- Voltage - Collector Emitter Breakdown (Max)：45V
- Vce Saturation (Max) @ Ib, Ic：-
- Current - Collector Cutoff (Max)：-
- DC Current Gain (hFE) (Min) @ Ic, Vce：100 @ 10µA, 5V
- Power - Max：600mW
- Frequency - Transition：40MHz
- Operating Temperature：-
- Mounting Type：Through Hole
- Package / Case：TO-78-6 Metal Can
- Supplier Device Package：TO-78-6
- Grade：-
- Qualification：-
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Overview
The Central Semiconductor Corp 2N2644 is a dual NPN low noise silicon transistor housed in a TO-78 metal case. It features a collector-base voltage of 45V and a collector-emitter voltage of 45V. The device supports a maximum continuous collector current of 30mA. Electrical characteristics include a minimum DC current gain (hFE) of 100 at 100mA, with a transition frequency (fT) of 10MHz measured at 10mA. The package provides a total power dissipation of 600mW at 25°C ambient temperature.
Feature Summary
- Dual NPN configuration within a single hermetically sealed metal package
- Optimized for low noise amplification applications
- High reliability construction suitable for demanding environments
Applications
- Low noise amplifier circuits
- RF signal processing stages
- Precision analog front-end modules
Procurement Notes
This component has been officially classified as End of Life by the manufacturer. No replacement part numbers are currently available from Central Semiconductor Corp. Procurement must rely on existing stock or secondary market sources. Verify authenticity and condition carefully when sourcing from non-direct channels due to the discontinued status.
Selection Notes
Designers should evaluate alternative components immediately given the End of Life status. Consider transistors with similar low noise specifications and compatible pinouts. Ensure any substitute meets the required voltage and current ratings while maintaining the necessary gain-bandwidth product for the intended application.
Part Context
The 2N2644 belongs to a family of dual low noise transistors manufactured by Central Semiconductor Corp. These devices utilize a robust TO-78 metal case designed for high reliability. The specific model targets applications requiring stable amplification with minimal added noise in sensitive electronic systems.
Replacement Considerations
No direct replacement part number is listed in the official discontinuation notice. Engineers must identify functional equivalents based on electrical parameters and mechanical constraints.
