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Product Detailed Parameters
- Description：TRANS NPN 45V 0.5A SOT23-3
- Series：-
- Mfr：onsemi
- 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：300 mW
- Frequency - Transition：100MHz
- Operating Temperature：-65°C ~ 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 BC817-25LT3H is an NPN general-purpose bipolar junction transistor manufactured by onsemi. It is housed in a compact SOT-23 surface-mount package, designed for low-voltage and high-current applications. The device features a collector-emitter voltage rating of 45 V and a maximum continuous collector current of 500 mA. The '25' suffix indicates a specific DC current gain (hFE) binning range, typically providing a gain between 160 and 400 at a collector current of 100 mA. This component serves as the complementary counterpart to the PNP BC807-25.
Feature Summary
- High current capability suitable for switching loads
- Three distinct current gain selections available within the series
- Designed for general-purpose amplification and switching tasks
Applications
- General-purpose switching circuits
- Audio frequency amplification stages
- Driver storage applications
Procurement Notes
Verify the manufacturer marking matches onsemi specifications. Confirm the part number suffix LT3H corresponds to the correct tape-and-reel packaging configuration. Ensure the hFE binning aligns with circuit requirements for the specific gain range. Check RoHS compliance status against current regulatory standards.
Selection Notes
Select this component when a small-form-factor NPN transistor is required for moderate current handling up to 500 mA. The BC817-25 variant is appropriate when a mid-range current gain is needed, offering better performance than the -16 grade while being more cost-effective than the -40 grade. Consider thermal dissipation limits in dense PCB layouts.
Part Context
This component belongs to the BC817 family of NPN epitaxial planar transistors. These devices are widely used in consumer electronics and industrial control systems due to their reliability and small footprint. The family includes variants with different gain characteristics to suit various amplifier biasing needs.
Replacement Considerations
Direct substitutes include BC817-25 from other manufacturers such as Nexperia or Diodes Incorporated. Complementary PNP operation requires the BC807-25. Verify pinout compatibility and thermal resistance values before substitution.
