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Product Detailed Parameters
- Description：TRANS PNP 45V 0.1A SOT23-3
- Series：-
- Mfr：Diotec Semiconductor
- Package：Bulk
- Transistor Type：PNP
- 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：220 @ 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-23-3 (TO-236)
- Grade：-
- Qualification：-
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Overview
The Diotec Semiconductor BC857B-C is a small-signal PNP bipolar junction transistor housed in an SOT-23 surface-mount package. It features a collector-emitter voltage of -45 V, a collector-base voltage of -50 V, and a continuous collector current of -100 mA with a peak rating of -200 mA. The device dissipates up to 300 mW at 25°C ambient temperature. As the 'C' suffix indicates, this component belongs to the commercial grade category, offering a DC current gain (hFE) range of 420 to 800 at IC = 2 mA. It operates within a junction temperature range of -55°C to +150°C.
Feature Summary
- Three distinct DC current gain groups for precise amplification control
- RoHS compliant and REACH regulation adherence without exemptions
- Designed for automated placement and general-purpose switching applications
Applications
- Signal processing circuits
- General-purpose switching
- Amplification stages
Procurement Notes
Verify that the ordering code includes the '-C' suffix to confirm the commercial grade specification. Ensure the procurement documentation references the correct datasheet version dated June 18, 2026. Confirm compliance requirements such as RoHS and REACH status directly from the manufacturer's official declarations before finalizing orders.
Selection Notes
Select this component when a standard commercial-grade PNP transistor is required for low-power signal processing or switching tasks. The BC857B-C variant provides high current gain suitable for sensitive amplification needs. Consider the thermal resistance characteristics and operating temperature limits when designing for environments exceeding standard room temperatures.
Part Context
This transistor belongs to the BC856 through BC860 series of universal PNP transistors manufactured by Diotec Semiconductor. These devices are designed as complementary pairs to NPN transistors like the BC846 series. The specific BC857 model offers a collector-emitter voltage of -45 V, distinguishing it from higher-voltage variants within the same family.
Replacement Considerations
Compatible substitutes include other manufacturers' BC857B models in SOT-23 packages. Verify pinout compatibility and electrical parameters such as hFE grouping and saturation voltages against the original specifications.
