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Product Detailed Parameters
- Description：TRANS NPN 45V 0.1A SOT-23-3
- Series：-
- Mfr：onsemi
- 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：600mV @ 5mA, 100mA
- Current - Collector Cutoff (Max)：15nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce：200 @ 2mA, 5V
- Power - Max：310 mW
- Frequency - Transition：300MHz
- Operating Temperature：150°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：TO-236-3, SC-59, SOT-23-3
- Supplier Device Package：SOT-23-3
- Grade：-
- Qualification：-
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Overview
The BC850BMTF is an NPN epitaxial silicon transistor from the BC846-BC850 series, designed for switching and amplifier applications. It features a collector-emitter voltage (VCEO) of 45 V, a collector-base voltage (VCBO) of 50 V, and a maximum DC collector current of 100 mA. The device offers a minimum DC current gain (hFE) of 200 with a maximum of 800 in the B classification. Key electrical parameters include a collector cut-off current of 15 nA, a noise figure of 1.4 dB, and a current gain bandwidth product of 300 MHz.
Feature Summary
- Low noise performance suitable for sensitive signal processing
- High DC current gain for efficient amplification
- Compatible with automatic insertion in thick and thin-film circuits
Applications
- General purpose switching
- Amplifier applications
- Portable equipment circuits
Procurement Notes
Verify the manufacturer origin, as Fairchild Semiconductor was acquired by onsemi. Confirm the specific hFE bin (Class B) matches design requirements. Ensure the SOT-23 tape and reel packaging aligns with automated assembly lines. Check for RoHS compliance documentation to meet environmental standards.
Selection Notes
Select this component when a low-noise NPN transistor with moderate voltage ratings is required. The BC850 variant provides higher breakdown voltages than the BC846/848 series. Consider the BC857BMTF if a PNP complement is needed for push-pull configurations.
Part Context
This part belongs to the BC846-BC850 family of general-purpose NPN transistors. Originally manufactured by Fairchild Semiconductor, these parts are now under the onsemi portfolio. The series is widely used in consumer electronics due to its small SOT-23 footprint and reliable performance characteristics.
Replacement Considerations
BC846BMTF, BC847BMTF, BC848BMTF, BC849BMTF, BC850AMTF, BC850CMTF
FAQ
What is the hFE range for the BC850BMTF?
The BC850BMTF has an hFE range of 200 to 450.
Is the BC850BMTF suitable for high-frequency applications?
Yes, it has a current gain bandwidth product (fT) of 300 MHz.
What does the 'M' suffix indicate in the part number?
The 'M' suffix indicates the SOT-23 package type.
