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Product Detailed Parameters
- Description：TRANS NPN 45V 0.5A SOT23-3
- Series：-
- Mfr：Diotec Semiconductor
- Package：Bulk
- 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：160 @ 100mA, 1V
- Power - Max：500 mW
- Frequency - Transition：170MHz
- Operating Temperature：150°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：TO-236-3, SC-59, SOT-23-3
- Supplier Device Package：SOT-23-3 (TO-236)
- Grade：-
- Qualification：-
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Overview
The Diotec Semiconductor BC817K-25 is a single NPN general-purpose bipolar junction transistor (BJT) housed in an SOT-23 surface-mount package. It supports a maximum collector current of 500 mA and a collector-emitter voltage of 45 V, with a power dissipation rating of up to 500 mW on a PCB. The device features three distinct DC current gain groups; the -25 variant specifies a minimum hFE of 160 at 100 mA and 1 V. It operates within a junction temperature range of -55°C to +150°C and exhibits a transition frequency of approximately 170 MHz.
Feature Summary
- Low thermal resistance construction for efficient heat dissipation
- Three standardized current gain groupings for precise circuit matching
- Compliant with RoHS, REACH, and Conflict Minerals regulations
Applications
- General-purpose signal processing
- Electronic switching circuits
- Amplification stages
Procurement Notes
Verify that the specific ordering suffix matches the required automotive qualification level. Standard commercial versions lack AEC-Q101 certification. Confirm the presence of the correct marking code '6B' or '6CS' on the component body to ensure authenticity and proper identification against counterfeit parts before integration into production.
Selection Notes
Select this component when a standard NPN BJT with moderate current handling and defined gain ranges is required. The -25 suffix indicates a specific gain bin suitable for applications needing consistent amplification factors. Ensure the design accommodates the 500 mA continuous collector current limit and verify that the SOT-23 package thermal characteristics meet the system's heat dissipation requirements under expected load conditions.
Part Context
This part belongs to the BC817K series of SMD general-purpose NPN transistors manufactured by Diotec Semiconductor. The 'K' designation denotes low thermal resistance compared to standard variants. It serves as the NPN counterpart to the BC807K PNP transistor family, providing complementary switching and amplification capabilities in compact surface-mount designs.
Replacement Considerations
BC817K-25-AQ
FAQ
What is the marking code for the BC817K-25?
The marking code for the BC817K-25 is 6B or 6CS.
Does the standard BC817K-25 meet automotive standards?
No, the standard version is commercial/industrial grade. Automotive compliance requires the -Q or -AQ suffixes.
What is the typical transition frequency (fT)?
The typical transition frequency is 170 MHz.
