What are the key features of Fairchild Semiconductor BC817-40?

This product belongs to the Bipolar Transistors - BJT category and ships in standard packaging. It features high reliability, stable performance and low power consumption. Key parameters include wide operating range, low loss, and over-temperature protection, suitable for industrial applications. Manufactured by Fairchild Semiconductor with full traceability.

What are the main application scenarios for BC817-40?

Typical applications include power management, industrial control. Additionally, it is widely used in automotive electronics, telecom infrastructure, medical devices, and consumer electronics as a critical circuit component, improving system integration and energy efficiency.

How does BC817-40 work?

This device follows established Bipolar Transistors - BJT design principles. Core functional stages include input handling, signal and power processing, and protection logic, ensuring stable operation under varying conditions. Refer to the datasheet for the detailed characteristics and application guidance.

What is the technical performance of BC817-40?

Performance highlights: stable characteristics across the operating temperature range, low loss, and long service life. Reliable contact and shock resistance, with protection against over-current and over-voltage where applicable. Meets industrial and automotive reliability standards where the series qualifies.

What is the current market demand for BC817-40?

The global Bipolar Transistors - BJT market is growing at ~6-8% CAGR, with particularly strong demand in power management. Fairchild Semiconductor BC817-40 is a mainstream model with stable stock and a typical lead time of 2-4 weeks. Driven by new energy and smart electronics trends, inquiries for this model are steadily increasing, indicating a positive long-term outlook.

What are the technical characteristics of BC817-40?

Three main technical features: 1) High reliability – stable performance over the rated life; 2) Low-loss design – reduced energy loss in operation; 3) Wide adaptability – compatible with various operating conditions. Additionally, Fairchild Semiconductor provides full technical support and reference designs.

BC817-40 双极晶体管 - 双极结型晶体管(BJT) BJT, SOT-23, 45V, 800mA, NPN by Fairchild Semiconductor

BC817-40 | Fairchild Semiconductor 双极晶体管 - 双极结型晶体管(BJT) BJT, SOT-23, 45V, 800mA, NPN

Category: Bipolar Transistors - BJT

Brand: Fairchild Semiconductor

双极晶体管 - 双极结型晶体管(BJT) BJT, SOT-23, 45V, 800mA, NPN

Stock: On request

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Product Details

PDF Datasheet

Technical Docs

Description: 双极晶体管 - 双极结型晶体管(BJT) BJT, SOT-23, 45V, 800mA, NPN

Technical Parameters

Collector Current	500 mA
Collector Emitter Saturation Voltage	0.2 V max
Configuration	Single
Emitter Base Voltage	5 V
Hfe	hFE 400-1000
Mounting Style	Surface Mount
Noise Figure	5 dB typical
Package Type	SOT-23
Polarity	NPN
Power Dissipation	350 mW
Temperature Range	-65 to +150 C
Transistor Type	BJT
Transition Frequency	100 MHz
Vceo	45 V

Standard Packaging: Standard packaging refers to the minimum packaging quantity obtained from the manufacturer/distributor. Therefore, the minimum order quantity may be less than the manufacturer's standard packaging quantity. When products are broken down into smaller quantities, the packaging type (i.e., reel, tube, tray) may change, subject to actual packaging delivery.

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3D Model (.stp)

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BC817-40 Application and Selection Guide

BC817-40 Model and Manufacturer Information

BC817-40, a Bipolar Transistors - BJT manufactured by Fairchild Semiconductor: BC817-40 helps you confirm the specific model, while Fairchild Semiconductor helps you confirm the product source. If you are selecting a part, you can first check whether BC817-40 meets your requirements, then check whether Fairchild Semiconductor matches your expectations, and then refer to 双极晶体管 - 双极结型晶体管(BJT) BJT, SOT-23, 45V, 800mA, NPN for further evaluation.

BC817-40 Product Parameters and Description

The main parameters of Fairchild Semiconductor's Bipolar Transistors - BJT product BC817-40 include 双极晶体管 - 双极结型晶体管(BJT) BJT, SOT-23, 45V, 800mA, NPN. This is a Bipolar Transistors - BJT produced by Fairchild Semiconductor, and it also offers good applicability in embedded systems, common 3C electronics, automotive electronics, electronic devices, and IoT devices.

BC817-40 Application and Selection Reference

Fairchild Semiconductor's Bipolar Transistors - BJT product BC817-40 has a relatively wide range of applications in embedded systems, common 3C electronics, automotive electronics, electronic devices, and IoT devices. Overall, BC817-40 is a Bipolar Transistors - BJT solution worth considering, and manufacturer Fairchild Semiconductor provides long-term supply program support for this product, which helps ensure supply continuity during mass production.

Recommended Part Numbers for BC817-40

Designers looking for BC817-40 recommended parts can evaluate the following options. BC817-40 selection decisions should verify parameters, tolerance and packaging against the original design bill of materials.

Recommended Part	Brand	Description
2N3904TFR	Fairchild Semiconductor	通用晶体管, NPN
BC32725BU	Fairchild Semiconductor	Trans GP BJT PNP 45V 0.8A 625mW 3-Pin TO-92 Bag
2N3906TA	Fairchild Semiconductor	小信号PNP双极晶体管

EZKEY can provide BC817-40 recommended part comparison data and engineering samples for evaluation.