Mfr Part #:

BC857B

The NXP Semiconductors BC857B is a bipolar transistor with a 45V collector-emitter voltage and 0.2A maximum collector current. It comes in a SOT-23 package.

✓ Total Stock: 770,318 pcs

$ Price Range: $0.99

BC857B Available from 7 distributors

✓ Authorised

✓ Non-Authorised

Distributor		Stock	Pricing	MOQ	PKG	Lead Time	Date Code	On Order Quantity	On Order Delivery
Smaxon Electronics ✓ Non-Authorised Inventory information	722,738 pcs On Request	722738 pcs	On Request	1	On Request	On Request	13+12	On Request	On Request
Tomark Electronics Ltd ✓ Non-Authorised Inventory information	21,000 pcs On Request	21000 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request
Innova Technologies ✓ Non-Authorised Inventory information	15,865 pcs On Request	15865 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request
ACK ELEKTRONIK ✓ Non-Authorised Inventory information	4,800 pcs On Request	4800 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request
Chanetech ✓ Non-Authorised Inventory information	2,632 pcs On Request	2632 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request
Partservice ✓ Non-Authorised Inventory information	1,983 pcs On Request	1983 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request
Braun Electronic Components ✓ Non-Authorised Inventory information	1,300 pcs On Request	1300 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request

BC857B Specifications Quick View

Most important parameters for selection – full specs in datasheet.

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Category	New Products
Manufacturer Name	NXP Semiconductors
Mounting Style	SMD
Package / Case	SOT-23
Storage Temperature	°C ~ °C
Tape & Reel	Tape & Reel

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BC857B Description

Short technical summary and product information.

The NXP Semiconductors BC857B is a single bipolar junction transistor (BJT) designed for general-purpose applications. It features a maximum DC collector current of 0.2A and a collector-emitter voltage (VCEO) of 45V. The transistor operates within a temperature range of -65°C to 150°C.

This component is housed in a SOT-23 surface-mount package, making it suitable for compact electronic designs. It offers a maximum power dissipation of 250mW and a gain bandwidth product (fT) of 100MHz. The BC857B is manufactured by NXP Semiconductors and is part of the Bipolar Transistors - BJT category.

Key electrical characteristics include a collector-base voltage (VCBO) of 50V and an emitter-base voltage (VEBO) of 5V. The maximum DC current gain (Hfe) is specified at 220 at 2mA collector current and 5V collector-emitter voltage. This transistor is a reliable choice for amplification and switching circuits in various electronic devices.

BC857B Quick Information

Product Type: Bipolar Transistor - BJT

Canonical Name: BC857B Bipolar Transistor - BJT

Subcategory: BJT

BC857B Compliance

RoHS Status: RoHS Compliant

Moisture Sensitivity Level (MSL): 1 Unlimited

REACH Status: REACH Unaffected

BC857B Estimated Pricing

Qty	Low	High
1+	$0.99	$0.99

Estimated market price range - modelled values for guidance only, not live distributor offers.

BC857B Features

45V collector-emitter voltage rating.
0.2A maximum DC collector current.
100MHz gain bandwidth product.
SOT-23 surface-mount package.
Operates from -65°C to 150°C.

BC857B Applications

Used in switching power supplies
Suitable for low-power amplification
Ideal for signal switching in compact devices
Applied in industrial control circuits

BC857B FAQs

4 frequently asked questions generated from this part’s specifications.

What is the maximum collector-emitter voltage (VCEO) for the BC857B?

The maximum collector-emitter voltage (VCEO) for the BC857B is 45V.

What is the maximum DC collector current for the BC857B?

The maximum DC collector current for the BC857B is 0.2A.

What is the operating temperature range of the BC857B?

The BC857B operates within a temperature range of -65°C to 150°C.

What package type is the BC857B available in?

The BC857B is available in a SOT-23 package.