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Product Detailed Parameters
- Description：TRANS PNP 45V 0.1A SOT23-3
- Series：-
- Mfr：Diotec Semiconductor
- Package：Tape & Reel (TR),Cut Tape (CT)
- Transistor Type：PNP
- Current - Collector (Ic) (Max)：100 mA
- Voltage - Collector Emitter Breakdown (Max)：45 V
- Vce Saturation (Max) @ Ib, Ic：650mV @ 5mA, 100mA
- Current - Collector Cutoff (Max)：15nA (ICBO)
- DC Current Gain (hFE) (Min) @ Ic, Vce：220 @ 2mA, 5V
- Power - Max：250 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-23-3 (TO-236)
- Grade：-
- Qualification：-
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Overview
The Diotec Semiconductor BC857B is a surface-mount general-purpose PNP bipolar junction transistor housed in SOT-23 and TO-236 packages. It features a maximum collector current of -100 mA, a collector-emitter voltage (VCEO) of -45 V, and a collector-base voltage (VCBO) of -50 V. The device dissipates up to 300 mW with a junction temperature range of -55°C to +150°C. DC current gain (hFE) for the B group ranges from 150 to 475 at IC = 2 mA. Transition frequency is 100 MHz, and thermal resistance varies by grade.
Feature Summary
- General-purpose switching and amplification capabilities
- Three distinct DC current gain groups available
- Compliant with RoHS, REACH, and Conflict Minerals regulations
Applications
- Signal processing circuits
- Electronic switching applications
- Amplifier stages
Procurement Notes
Verify the specific suffix against official documentation to confirm the exact electrical characteristics and reliability grade. Standard versions without suffixes are industrial grade, while -C denotes commercial grade. Automotive-grade variants require explicit -Q or -AQ suffixes. Confirm package type and tape-and-reel specifications prior to ordering.
Selection Notes
Select the BC857B when a low-voltage PNP transistor with moderate current handling is required. Ensure the selected gain group matches the circuit's amplification requirements. Verify that the operating temperature range aligns with the specified -55°C to +150°C limit. Consider complementary NPN transistors if matched pairs are needed for differential configurations.
Part Context
This component belongs to the BC856...BC860 series of SMD universal PNP transistors manufactured by Diotec Semiconductor AG. The series includes various voltage ratings and gain groups designed for standard commercial and industrial applications. The BC857B specifically targets applications requiring a 45 V collector-emitter breakdown voltage.
Replacement Considerations
Check datasheets for equivalent parts offering identical pinouts and matching voltage/current ratings. Verify that replacement components meet the same thermal resistance and gain group specifications to ensure circuit compatibility.
