Manufacturer Part Number

BC847BLT3G

Description

NPN bipolar junction transistor for general purpose switching and amplification. Handles up to 45V collector-emitter voltage and 100mA collector current. Small SOT-23-3 surface-mount package makes it good for high-density PCB layouts. RoHS compliant, new original stock available.

Specifications

Collector-Emitter Voltage: 45V maximum

Collector Current: 100mA maximum

Saturation Voltage (Vce(sat)): 600mV max at 5mA base, 100mA collector

Cutoff Current (ICBO): 15nA max

DC Current Gain (hFE): Minimum 200 at 2mA, 5V

Transition Frequency (fT): 100MHz

Power Dissipation: 300mW max

Operating Temperature: -55°C to +150°C

Package: SOT-23-3 (TO-236), surface-mount

Moisture Sensitivity: Level 1, unlimited

Complies with ROHS3 and REACH

Device Structure

NPN bipolar transistor with three terminals (collector, base, emitter). Encapsulated in a SOT-23-3 (TO-236) plastic package for surface mounting. Designed for compact PCBs and automated assembly.

Performance Characteristics

High DC current gain ensures efficient switching and amplification. Fast transition frequency (100MHz) supports high-speed operation in signal circuits. Low collector cutoff current means low leakage and better efficiency in idle state. Moderate power rating allows handling of reasonable loads in compact circuits.

Application Environments

Used in signal amplification, switching circuits, voltage regulation, motor drivers, low power logic interfaces, sensor circuits, communication equipment, industrial control, consumer electronics and instrumentation. Ideal for environments needing compact, reliable, and general-purpose surface-mount transistors.

Selection Guidelines

Choose this transistor for applications needing small package size, moderate voltage and current handling, good switching speed, and reliable manufacturing support. Make sure your design does not exceed the max voltage (45V) or current (100mA). Consider thermal dissipation limits for high-frequency or continuous operation. Surface-mount type makes it best for automated manufacturing.

Usage Considerations

Monitor maximum ratings for collector-emitter voltage and current to avoid breakdown. Emphasize proper thermal management to ensure the junction temperature stays below 150°C. Feature in designs with appropriate layout and soldering process for SOT-23-3 package. Observe ESD precautions during handling and assembly. Check power derating for extended high-temp operation.

Potential Equivalent/Replacement Models

Yes, there are direct equivalents available. You can consider the following alternative models:

BC847A/B/C (various manufacturers, different gain groups)

BC850 series (higher beta, same package)

MMBT3904 (slightly higher voltage rating, similar package)

SMMBT3904 (Diodes Incorporated, same functional spec)

2N3904 (through-hole version, different footprint)

PMBT3904 (NXP, SOT-23, close electrical parameters)

For precise interchange, check parameters like voltage, current, gain, and package type. If your requirement is unique or specific, contact the Ariat-Tech sales team for more detailed model matching and availability advice.

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