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Product Detailed Parameters
- Description：TRANS NPN 45V 0.1A SOT-23
- Series：-
- Mfr：Taiwan Semiconductor Corporation
- Package：Tape & Reel (TR)
- Transistor Type：NPN
- Current - Collector (Ic) (Max)：100 mA
- Voltage - Collector Emitter Breakdown (Max)：45 V
- Vce Saturation (Max) @ Ib, Ic：500mV @ 5mA, 100mA
- Current - Collector Cutoff (Max)：100nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce：110 @ 2mA, 5V
- Power - Max：200 mW
- Frequency - Transition：100MHz
- Operating Temperature：-55°C ~ 150°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：TO-236-3, SC-59, SOT-23-3
- Supplier Device Package：SOT-23
- Grade：-
- Qualification：-
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Overview
The BC847A is a general-purpose NPN silicon small-signal transistor manufactured by Taiwan Semiconductor Corporation. It features a maximum collector current of 100 mA and a collector-emitter voltage rating of 45 V. The device operates within a temperature range of -55°C to +150°C. Key electrical parameters include a minimum DC current gain (hFE) of 110 at specified test conditions, a transition frequency (fT) of 100 MHz, and a power dissipation capability of 200 mW.
Feature Summary
- NPN polarity configuration for single-ended signal amplification
- Silicon planar epitaxial construction for reliability
- Surface-mount compatible lead-free package design
Applications
- General purpose switching applications
- Small signal amplification circuits
- Audio pre-amplifier stages
Procurement Notes
Verify the manufacturer marking on the component body matches Taiwan Semiconductor Corporation specifications. Confirm the package type corresponds to SOT-23 or SC-59 standards. Ensure RoHS compliance documentation aligns with project requirements. Cross-reference datasheet revision numbers to confirm parameter consistency before integration into production designs.
Selection Notes
Select this component for low-power analog and digital switching tasks requiring moderate gain. Compare hFE binning requirements against circuit sensitivity. Evaluate thermal management needs based on the 200 mW dissipation limit in enclosed environments. Verify pinout compatibility with existing PCB footprints during the design phase.
Part Context
This part belongs to the BC847 series of small-signal transistors. It serves as a standard replacement for legacy NPN devices in consumer electronics and industrial control systems. The component is widely used in portable equipment due to its compact surface-mount form factor and robust electrical characteristics for general-purpose logic interfacing.
Replacement Considerations
Direct substitutes include BC847B and BC847C from various manufacturers, noting differences in current gain ranges. Verify pinout alignment and package dimensions when sourcing alternatives from other vendors to ensure mechanical fit.
