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Product Detailed Parameters
- Description：TRANS NPN 20V 0.3A SMT3
- Series：-
- Mfr：Rohm Semiconductor
- Package：Tape & Reel (TR),Cut Tape (CT)
- Transistor Type：NPN
- Current - Collector (Ic) (Max)：300 mA
- Voltage - Collector Emitter Breakdown (Max)：20 V
- Vce Saturation (Max) @ Ib, Ic：100mV @ 3mA, 30mA
- Current - Collector Cutoff (Max)：100nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce：820 @ 4ma, 2V
- Power - Max：200 mW
- Frequency - Transition：35MHz
- 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 2SD2704KT146 is a single NPN bipolar junction transistor manufactured by ROHM Semiconductor. It operates with a maximum collector-emitter voltage of 20 V and supports a continuous collector current of 300 mA. The device features a transition frequency of 35 MHz and a maximum power dissipation of 200 mW. Packaged in the SMT3 (SOT-23) surface-mount format, it exhibits a DC current gain of at least 820 under specified conditions. The component is rated for junction temperatures up to 150°C and complies with RoHS3 standards.
Feature Summary
- High DC current gain capability for efficient signal amplification
- Compact SMT3 surface-mount package design for space-constrained applications
- Integrated thermal stability supporting high junction temperature operation
Applications
- General-purpose switching circuits
- Low-frequency amplifier stages
- Driver circuits for low-power loads
Procurement Notes
Verify the specific ordering suffix KT146 to confirm the SMT3 tape-and-reel packaging configuration. Ensure compatibility with standard SOT-23 footprint designs during PCB layout. Confirm RoHS3 compliance requirements against project specifications. Validate that the 20V voltage rating meets the circuit's peak operating demands. Check for any end-of-life notifications or recommended new design alternatives from the manufacturer.
Selection Notes
Select this component when a compact NPN transistor with moderate current handling and high gain is required. The 20V breakdown voltage suits low-voltage logic interfaces. The 35MHz transition frequency limits suitability to audio or slow digital switching rather than RF applications. Compare power dissipation limits against thermal management capabilities in the final assembly.
Part Context
This part belongs to the 2SD2704 series of small-signal NPN transistors. It is designed for general electronic applications requiring reliable switching and amplification. The KT146 suffix denotes the specific taping specification and packaging variant used for automated surface-mount assembly processes.
Replacement Considerations
Consult official substitution guides for equivalent NPN transistors in the SOT-23 package with similar voltage and current ratings. Verify pinout compatibility before replacing existing components on populated boards.
