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Product Detailed Parameters
- Description：TRANS NPN 45V 0.1A SOT23-3
- Series：-
- Mfr：Diotec Semiconductor
- Package：Tape & Reel (TR),Cut Tape (CT)
- Transistor Type：NPN
- Current - Collector (Ic) (Max)：100 mA
- Voltage - Collector Emitter Breakdown (Max)：45 V
- Vce Saturation (Max) @ Ib, Ic：600mV @ 5mA, 100mA
- Current - Collector Cutoff (Max)：100nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce：110 @ 2mA, 5V
- Power - Max：250 mW
- Frequency - Transition：300MHz
- 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-23-3 (TO-236)
- Grade：-
- Qualification：-
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Overview
The Diotec BC850A is a general-purpose NPN transistor in SOT-23/TO-236 packaging. It features a collector-emitter voltage (VCEO) of 45 V and a continuous collector current (IC) of 100 mA. Power dissipation is rated at 250 mW for industrial grades, with a maximum junction temperature of 150°C. The device offers three hFE groups: A (90-220), B (150-450), and C (270-800) at IC=2 mA. It complies with RoHS and REACH standards.
Feature Summary
- General-purpose NPN switching and amplification
- Three distinct DC current gain groups (A, B, C)
- Industrial and AEC-Q101 qualified grade options
- RoHS compliant without exemption
Applications
- Signal processing
- Switching circuits
- Amplification stages
Procurement Notes
Verify the specific suffix to confirm the operating grade. The absence of a suffix indicates Industrial grade, while -C denotes Commercial grade. Ensure the required hFE group matches the design specifications. Confirm AEC-Q101 compliance if automotive qualification is necessary. Check datasheet revision dates for updated thermal or electrical limits.
Selection Notes
Select based on required current gain range and voltage ratings. Group A suits low-gain applications, while Group C provides high gain. Industrial grades offer higher power dissipation than Commercial (-C) versions. Verify package compatibility with PCB layout constraints. Consider thermal resistance values for heat dissipation planning in enclosed designs.
Part Context
This component belongs to the BC846...BC850 series of SMD universal NPN transistors. It shares the same physical footprint and basic electrical characteristics as other members like BC847 and BC848, differing primarily in breakdown voltages. The series is designed for compact surface-mount applications requiring reliable general-purpose performance.
Replacement Considerations
BC847B/-AQ serves as a compatible substitute with similar gain characteristics but lower voltage ratings. BC848 variants offer identical pinouts and gain groups but operate at reduced collector-emitter voltages. Verify that the replacement part meets the specific voltage and thermal requirements of the original circuit design.
