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Product Detailed Parameters
- Description：TRANS NPN 45V 0.5A SOT-23
- Series：-
- Mfr：Taiwan Semiconductor Corporation
- Package：Tape & Reel (TR),Cut Tape (CT)
- Transistor Type：NPN
- Current - Collector (Ic) (Max)：500 mA
- Voltage - Collector Emitter Breakdown (Max)：45 V
- Vce Saturation (Max) @ Ib, Ic：700mV @ 50mA, 500mA
- Current - Collector Cutoff (Max)：100nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce：250 @ 100mA, 1V
- Power - Max：300 mW
- Frequency - Transition：100MHz
- Operating Temperature：-55°C ~ 150°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：TO-236-3, SC-59, SOT-23-3
- Supplier Device Package：SOT-23
- Grade：-
- Qualification：-
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Overview
The BC817-40 RFG is an NPN bipolar junction transistor manufactured by Taiwan Semiconductor Corporation. It features a maximum collector-emitter voltage of 45 V and a continuous collector current of 500 mA. The device operates in a SOT-323 surface-mount package with a power dissipation rating of 200 mW. Key electrical parameters include a transition frequency of 100 MHz, a DC current gain (hFE) minimum of 250 at 100 mA and 1 V, and a collector-emitter saturation voltage of 700 mV at 50 mA base and 500 mA collector currents.
Feature Summary
- NPN general-purpose switching and amplification capability
- High DC current gain for efficient drive requirements
- Low collector-emitter saturation voltage for reduced power loss
- Automotive-grade reliability options available within the series
Applications
- General-purpose switching circuits
- Amplifier stages
- Automotive electronics applications
Procurement Notes
Verify the specific suffix against official manufacturer documentation to confirm exact electrical tolerances and packaging configurations. Ensure compatibility with target operating temperatures and validate RoHS compliance status prior to integration into final designs.
Selection Notes
Select this component for designs requiring compact SOT-323 packaging with moderate current handling capabilities. Consider the specific hFE binning requirements for amplifier linearity and verify thermal management strategies suitable for the 200 mW power dissipation limit in the chosen enclosure.
Part Context
This part belongs to the BC817 family of NPN transistors, which are widely used as standard general-purpose devices. The RFG suffix typically denotes specific tape-and-reel packaging or manufacturing lot characteristics defined by Taiwan Semiconductor Corporation for automated assembly processes.
Replacement Considerations
BC817-40W-AQ
FAQ
What is the maximum collector-emitter voltage for the BC817-40 RFG?
The maximum collector-emitter voltage (Vceo) is 45 V.
Which package type does the BC817-40 RFG utilize?
It utilizes the SOT-323 (SC-70) surface-mount package.
What is the typical transition frequency of this transistor?
The transition frequency (ft) is specified as 100 MHz.
