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Product Detailed Parameters
- Description：TRANS NPN 15V 1A SMT3
- Series：-
- Mfr：Rohm Semiconductor
- Package：Tape & Reel (TR),Cut Tape (CT)
- Transistor Type：NPN
- Current - Collector (Ic) (Max)：1:00 AM
- Voltage - Collector Emitter Breakdown (Max)：15 V
- Vce Saturation (Max) @ Ib, Ic：300mV @ 20mA, 400mA
- Current - Collector Cutoff (Max)：500nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce：180 @ 50mA, 2V
- Power - Max：200 mW
- Frequency - Transition：200MHz
- Operating Temperature：150°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：TO-236-3, SC-59, SOT-23-3
- Supplier Device Package：SMT3
- Grade：-
- Qualification：-
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Overview
The 2SD2444KT146R is an NPN bipolar junction transistor manufactured by Rohm Semiconductor. It features a collector-emitter voltage (VCEO) of 15 V and a continuous collector current (IC) rating of 1 A. The device operates with a maximum power dissipation of 200 mW and supports a junction temperature up to 150 °C. Key electrical characteristics include a DC current gain (hFE1) ranging from 180 to 390 at IC = 50 mA, and a transition frequency (fT) of approximately 200 MHz. It utilizes the SOT-346 (SMT3) surface-mount package.
Feature Summary
- Low saturation voltage capability, specified as a maximum of 300 mV at IC/IB = 400mA/20mA.
- Designed for high-current applications with a rated collector current of 1 A.
- Functions as a complementary component to the 2SB1590K PNP transistor.
Applications
- Low frequency power amplifier circuits
Procurement Notes
Verify the specific ordering suffix KT146R against the manufacturer's latest documentation to confirm packaging details and marking codes. Ensure that the procurement channel provides original manufacturer data sheets to validate the component's authenticity and compliance with RoHS standards before finalizing orders.
Selection Notes
Select this component for designs requiring a 15 V NPN transistor capable of handling 1 A loads in low-frequency power amplification tasks. Consider its 200 mW power dissipation limit and thermal derating requirements when designing the heat management strategy for the target application environment.
Part Context
This part belongs to the 2SD2444K series of power transistors produced by Rohm Semiconductor. It is packaged in the SOT-346 form factor, also designated as SMT3 or SC-59. The product line focuses on providing reliable discrete semiconductor solutions for consumer electronics and general-purpose equipment applications.
Replacement Considerations
The datasheet identifies the 2SB1590K as a complementary counterpart. No other direct substitute part numbers are documented in the provided source material.
FAQ
What is the maximum collector-base breakdown voltage?
The maximum collector-base breakdown voltage (BVCBO) is 15 V.
What is the typical transition frequency?
The typical transition frequency (fT) is 200 MHz under conditions of VCE = 2V and IE = -50mA.
Is this component suitable for automotive use?
No, the manufacturer explicitly states that this product is not recommended for use in automotive equipment.
