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Product Detailed Parameters
- Description：TRANS NPN 45V 0.5A SOT-323
- Series：-
- Mfr：Diodes Incorporated
- 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
- DC Current Gain (hFE) (Min) @ Ic, Vce：250 @ 100mA, 1V
- Power - Max：200 mW
- Frequency - Transition：100MHz
- Operating Temperature：-65°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-7 is an NPN small signal transistor manufactured by Diodes Incorporated, housed in a SOT323 surface-mount package. It features a collector-emitter voltage (VCEO) of 45 V and a continuous collector current (IC) of 500 mA. The device has a maximum power dissipation (PD) of 200 mW and a transition frequency (fT) of 100 MHz. DC current gain (hFE) ranges from 250 to 600 at IC = 100mA, VCE = 1.0V. It operates within a temperature range of -65°C to +150°C.
Feature Summary
- Epitaxial planar die construction for reliable performance
- Qualified to AEC-Q101 standards for high reliability
- Totally lead-free and fully RoHS compliant
- Halogen and antimony free green device
Applications
- General-purpose switching applications
- Audio Frequency (AF) amplifier circuits
Procurement Notes
Verify the specific ordering suffix '-7' corresponds to the 3,000-unit reel packaging configuration as documented in the manufacturer's ordering information section. Confirm that the component meets the required environmental specifications, including RoHS compliance and halogen-free status, before finalizing procurement orders.
Selection Notes
Select this component when a compact SOT323 footprint is required for NPN switching or amplification tasks. Ensure the design accommodates the 200 mW power dissipation limit under expected operating conditions. Verify that the 45 V collector-emitter voltage rating provides sufficient margin for the target circuit application.
Part Context
This part belongs to the BC817-xxW series of general-purpose NPN transistors. It serves as the complementary counterpart to the BC807-xxW PNP type. The 'W' designation indicates the SOT323 package variant, distinguishing it from other package options within the broader BC817 family.
Replacement Considerations
BC817-40W-AQ
FAQ
What is the maximum collector-base voltage for this transistor?
The maximum collector-base voltage (VCBO) is 50 V.
Is this component suitable for automotive applications?
Yes, the device is qualified to AEC-Q101 standards for high reliability.
What is the ESD protection rating for human body model testing?
The electrostatic discharge human body model (ESD HBM) rating is 4,000 V, classified under JEDEC Class 3A.
