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Product Detailed Parameters
- Description：TRANS NPN 45V 0.5A SOT-323
- Series：BC817-16W
- Mfr：Panjit International 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：250 @ 100mA, 1V
- Power - Max：300 mW
- Frequency - Transition：100MHz
- Operating Temperature：-55°C ~ 150°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：SC-70, SOT-323
- Supplier Device Package：SOT-323
- Grade：-
- Qualification：-
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Overview
The BC817-40W_R1_00001 is an NPN general-purpose transistor from the BC817-16W series, manufactured by Panjit International Inc. It features a collector-emitter voltage (VCEO) of 45 V and a continuous collector current (IC) of 500 mA. The device utilizes an NPN epitaxial silicon planar design within a SOT-323 plastic case. Key electrical characteristics include a DC current gain (hFE) range of 250 to 600 at IC=100mA and VCE=1V, and a transition frequency (fT) of 100 MHz. Thermal resistance junction-to-ambient is 420 °C/W, with a total power dissipation of 300 mW.
Feature Summary
- NPN epitaxial silicon planar design for general-purpose amplifier applications
- High DC current gain ranging from 250 to 600 under standard test conditions
- Lead-free construction compliant with EU RoHS directives
- Green molding compound that is halogen-free per IEC61249 standards
Applications
- General purpose amplifier circuits
- Switching applications requiring low power dissipation
- Signal processing in consumer electronics
Procurement Notes
Verify the specific ordering suffix matches the required packaging configuration, such as 3K pcs on a 7-inch reel or 12K pcs on a 13-inch reel. Confirm the device marking corresponds to '8W' for the BC817-40W variant. Ensure compliance requirements align with the manufacturer's declaration of lead-free status and halogen-free green molding compound specifications.
Selection Notes
Select this component when a high-gain NPN transistor is needed for low-power signal amplification. The BC817-40W variant offers superior current gain compared to lower-rated siblings in the series. Consider the SOT-323 package constraints and thermal resistance limits for PCB layout. Verify that the 45 V collector-emitter voltage rating meets the circuit's maximum operating requirements.
Part Context
This part belongs to the BC817-16W series of NPN general-purpose transistors. The series includes variants differentiated primarily by their DC current gain ranges: BC817-16W, BC817-25W, and BC817-40W. All variants share identical voltage ratings, current capabilities, and physical package dimensions, allowing for pin-compatible substitution based on gain requirements.
Replacement Considerations
Compatible substitutes within the same family include BC817-16W and BC817-25W, provided the application can accommodate their respective hFE ranges. These parts share the same SOT-323 footprint and electrical voltage/current limits.
