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Product Detailed Parameters
- Description：RF TRANS NPN 11V 3.2GHZ SMT3
- Series：-
- Mfr：Rohm Semiconductor
- Package：Tape & Reel (TR),Cut Tape (CT)
- Transistor Type：NPN
- Voltage - Collector Emitter Breakdown (Max)：11V
- Frequency - Transition：3.2GHz
- Noise Figure (dB Typ @ f)：3.5dB @ 500MHz
- Gain：-
- Power - Max：200mW
- DC Current Gain (hFE) (Min) @ Ic, Vce：56 @ 5mA, 10V
- Current - Collector (Ic) (Max)：50mA
- 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 2SC3838KT146N is a high-frequency NPN silicon transistor manufactured by ROHM Semiconductor. It operates in the SOT-346 (SMT3) surface-mount package with a collector-emitter voltage of 11V and a continuous collector current of 50mA. The device features a typical transition frequency of 3.2GHz, enabling operation at ultra-high frequencies. Key electrical parameters include a maximum power dissipation of 200mW, an output capacitance of 0.8pF, and a noise figure of 3.5dB. These specifications support its use in RF amplifier applications.
Feature Summary
- High transition frequency for UHF band operations
- Low base resistance and small output capacitance
- Optimized low noise figure performance
Applications
- UHF frequency converter circuits
- Local oscillator modules
Procurement Notes
Verify the specific ordering suffix to confirm packaging details such as reel size and tape width. Ensure that ESD protection measures are implemented during handling and storage, as the component is sensitive to electrostatic discharge. Confirm ambient temperature derating requirements before finalizing the design.
Selection Notes
Select this component when designing circuits requiring high-speed switching or amplification in the UHF range. Consider the 11V collector-emitter voltage limit and 50mA current rating against circuit demands. Evaluate the thermal management strategy to maintain junction temperature within the specified 150°C limit under load.
Part Context
This part belongs to the 2SC3838K series of high-frequency transistors from ROHM. It is designed specifically for surface-mount assembly using the SOT-346 package. The KT146 suffix indicates the taping configuration and basic ordering unit quantity provided by the manufacturer.
Replacement Considerations
Consult official ROHM documentation for direct substitutes. Verify pinout compatibility and electrical ratings if considering alternative manufacturers. Ensure any replacement maintains the required transition frequency and noise characteristics for the specific application.
FAQ
What is the typical transition frequency of the 2SC3838KT146N?
The typical transition frequency (fT) is 3.2 GHz.
What is the maximum collector-emitter voltage rating?
The maximum collector-emitter voltage (VCEO) is 11 V.
Is this component suitable for high-noise environments?
No, it is designed for low noise applications with a typical noise figure of 3.5 dB.
