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Product Detailed Parameters
- Description：TRANS NPN 45V 0.5A TO-236AB
- Series：-
- Mfr：Nexperia USA Inc.
- 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：100 @ 100mA, 1V
- Power - Max：250 mW
- Frequency - Transition：100MHz
- Operating Temperature：150°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：TO-236-3, SC-59, SOT-23-3
- Supplier Device Package：TO-236AB
- Grade：-
- Qualification：-
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Overview
The Nexperia BC817,235 is an NPN general-purpose transistor housed in a SOT23 (TO-236AB) surface-mount package. It supports a maximum collector current of 500 mA and a collector-emitter voltage of 45 V. The device offers three DC current gain selections: BC817 (100 to 600), BC817-16 (100 to 250), BC817-25 (160 to 400), and BC817-40 (250 to 600). Peak collector current reaches 1 A for single pulses up to 1 ms. Total power dissipation is rated at 250 mW at 25 °C ambient temperature.
Feature Summary
- High current capability with a continuous collector current rating of 500 mA.
- Three distinct current gain selection groups available for precise circuit design.
- Designed for general-purpose switching and amplification tasks.
Applications
- General-purpose switching
- Amplification circuits
Procurement Notes
Verify the specific suffix code on the component marking to confirm the exact hFE bin (BC817, -16, -25, or -40). Confirm that the application does not require automotive qualification, as this standard version lacks AEC-Q101 certification. Ensure thermal management aligns with the 250 mW dissipation limit under expected operating conditions.
Selection Notes
Select the appropriate gain variant based on required beta stability; BC817-40 provides the highest minimum gain. Evaluate thermal resistance requirements against the PCB footprint type, as junction-to-ambient resistance varies significantly between standard footprints and larger collector pads. Verify that the 45 V breakdown voltage meets the circuit's peak voltage demands.
Part Context
This component belongs to the BC817 series of NPN transistors manufactured by Nexperia. It serves as the complement to the BC807 PNP series. The device utilizes a small plastic SOT23 surface-mount package, making it suitable for space-constrained printed-circuit-board designs requiring reliable general-purpose bipolar junction transistor performance.
Replacement Considerations
Direct functional substitutes within the same series include BC817-16, BC817-25, and BC817-40, depending on the required current gain range. The PNP equivalent is the BC807 series. Cross-manufacturer equivalents should be verified against the 500 mA current and 45 V voltage limits.
