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BC857BW
+BOMTRANS PNP 45V 0.1A SOT323
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ManufacturerDiotec Semiconductor
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Mfr. Part #BC857BW
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Datasheet BC857BW DataSheet
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Package SOT-323
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In Stock6813
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Specifications
| Attribute | Value |
| Package / Case | Strip |
| Part Status | Active |
| 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(h FE)(Min) @ Ic Vce | 220 @ 2mA, 5V |
| Power - Max | 200 mW |
| Frequency - Transition | 100MHz |
| Operating Temperature | -55°C ~ 150°C (TJ) |
| Mounting Type | Surface Mount |
Overview
Description
Key specifications include a collector-emitter voltage (V_ce) of 45V, a collector current (I_c) of up to 100mA, and a power dissipation of around 250mW. The device offers a DC current gain (h_FE) typically ranging from 125 to 800, which makes it versatile for various analog applications such as signal amplification and switching tasks.
Due to its small size and reliable performance, the BC857BW is often employed in consumer electronics, automotive, and communication equipment. Its ability to function effectively across a wide temperature range enhances its applicability in diverse environmental conditions.
Equivalent
Features
1. Polarity: PNP, meaning the majority carriers are holes.
2. Package: SOT-323/SC-70, a small surface-mount package ideal for compact PCB designs.
3. Operating Voltage: Collector-Emitter Voltage (V_CE) of -45V, allowing it to handle moderate voltage applications.
4. Current Rating: Collector Current (I_C) of -100mA, suitable for low to medium current circuits.
5. Power Dissipation: Maximum power dissipation of around 250mW, indicating its capacity for handling power within its operational limits.
6. Transition Frequency: Typically around 100 MHz, which is adequate for audio and some RF applications.
7. Gain: High DC current gain (h_FE) ranging from 125 to 800, providing efficient amplification.
8. Temperature Range: Operational temperature range of -55°C to 150°C, suitable for various environmental conditions.
These features make the BC857BW suitable for use in signal processing, amplification circuits, and as a switch in electronic devices.
Pinout
- Pin Count: The BC857BW has 3 pins.
- Pin Functions:
1. Emitter (E): The emitter is the terminal from which the charge carriers (holes for PNP) are emitted. It is typically connected to the more negative side of the circuit.
2. Base (B): The base terminal controls the transistor's operation. A small current flowing into the base allows a larger current to flow from the emitter to the collector.
3. Collector (C): The collector is the terminal through which the majority of the charge carriers flow out of the transistor. It is usually connected to the more positive side of the circuit.
This transistor is used in low power applications due to its small size and power handling capabilities.
Manufacturer
Application
1. Switching Applications: Suitable for low-power switching, this transistor is often used in switches and relay controls.
2. Amplification: It is used in audio and signal amplification, ideal for small-signal amplification stages.
3. Analog Circuits: Utilized in analog circuits for tasks such as buffering and scaling.
4. Voltage Regulation: Plays a role in voltage regulation and stabilization circuits.
5. General Purpose Use: Employed in general-purpose electronic circuits and projects due to its reliability and ease of use.
It is particularly favored in portable and low-power devices due to its small size and low current requirements.