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Beginner’s Guide to the BC817-40 Transistor

The BC817-40 transistor is a versatile component used in many electronics for switching and amplifying signals. In this article, you’ll learn about its features, uses, and how it can be applied in your projects.

Catalog

[IMAGE OF BC817-40]

Overview of BC817-40 Transistor

The BC817-40 is a 45V NPN small signal transistor created by Diodes Incorporated, housed in a compact SC−59/SOT23 package. It's suited for switching and audio frequency amplifier applications, providing steady performance across various uses. This transistor is easy to integrate into automated production, offering a lead-free design that meets strict reliability standards. With its stable, efficient operation, the BC817-40 serves well in projects needing a dependable NPN transistor.

BC817-40 Pin Configuration

[IMAGE OF BC817-40 Pin Configuration]

BC817-40 CAD Model

BC817-40 Symbol

[IMAGE OF BC817-40 Symbol]

BC817-40 Footprint

[IMAGE OF BC817-40 Footprint]

Key Features of BC817-40

Suitable for Automatic Insertion

The BC817-40 is designed to work well in automated manufacturing, making it ideal for high-volume production. Its structure allows for efficient placement in assembly lines, helping speed up production without compromising on quality.

Epitaxial Planar Die Construction

With its epitaxial planar die construction, this transistor offers stable performance in a variety of applications. This design also provides reliable electrical characteristics, so you can use it confidently in different types of circuits.

Compatible PNP Types Available

If your circuit needs both NPN and PNP transistors, you’ll find compatible PNP versions that pair easily with the BC817-40. This lets you design complementary circuits more easily while keeping your components consistent.

Ideal for Switching and AF Amplifier Applications

The BC817-40 works well in both switching and audio frequency (AF) amplifier applications. In switching, it ensures smooth transitions, while in AF amplifiers, it handles signals reliably, giving you flexibility to use it across different roles in your project.

Lead-Free and RoHS Compliant

This transistor meets RoHS standards and is lead-free, making it a safer choice for both people and the environment. Its compliance means you can use it in regions that require eco-friendly materials without any issues.

Halogen and Antimony Free

As a “green” device, the BC817-40 is free from halogen and antimony, which makes it a safer option for disposal and recycling. This eco-friendly feature supports sustainable design choices.

Qualified to AEC-Q101 Standards

This transistor meets AEC-Q101 standards, so you can trust its reliability in projects where you need dependable, long-term performance. It’s well-suited for areas like automotive, industrial, and consumer electronics, where consistency matters.

Mechanical Data of BC817-40

Case Type

The BC817-40 comes in a compact SOT23 case, a popular choice for small signal transistors. This size helps save space in your design, which is useful when you’re working with limited room on the circuit board.

Case Material

Its case is made from molded plastic with a “green” compound that meets UL Flammability Classification Rating 94V-0. This durable material keeps the transistor safe from environmental stress, giving it lasting protection.

Moisture Sensitivity

Rated at Level 1 per J-STD-020, the BC817-40 has low moisture sensitivity. This means you can store it in various environments without worrying about special handling, making it convenient to work with.

Terminal Finish

The terminals have a matte tin finish, which ensures good solderability with different soldering methods. This finish allows for strong connections that resist corrosion, giving you reliable bonding within the circuit.

Weight

At around 0.008 grams, the BC817-40 is extremely lightweight, making it a practical choice for portable or compact designs where every gram counts. Its minimal weight won’t affect your design’s overall weight.

Specifications of BC817-40

Technical specifications, features, characteristics, and components with comparable specifications of Diodes Incorporated BC817-40

[TABLE OF Specifications]

Equivalent Transistors for BC817-40

[TABLE OF BC817-40 Equivalent]

Parts with Similar Specifications to BC817-40

The parts listed have specifications similar to the Diodes Incorporated BC817-40

[TABLE OF Parts with Similar Specs]

Package Details of BC817-40

BC817-40 Package View A

[IMAGE OF BC817-40 Package View A]

BC817-40 Package View B

[IMAGE OF BC817-40 Package View B]

BC817-40 Package View C

[IMAGE OF BC817-40 Package View C]

Marking Information for BC817-40

[IMAGE OF BC817-40 Marking Information]

Recommended Pad Layout for BC817-40

The following diagram shows the BC817-40 Suggested Pad Layout.

[IMAGE OF BC817-40 Suggested Pad Layout]

About Diodes Incorporated

Diodes Incorporated delivers high-quality semiconductor products to major markets, including consumer electronics, computing, communications, industrial, and automotive sectors. Their product range covers discrete, analog, and mixed-signal devices, aimed at meeting diverse technology needs. With 25 global sites focused on engineering, testing, manufacturing, and customer support, Diodes Incorporated remains a trusted choice for industries looking for reliable, well-designed semiconductor solutions.

Frequently Asked Questions [FAQ]

1. How many pins does the BC817-40-7-F transistor have?

The BC817-40-7-F transistor has a total of three pins. Each pin is designated for a specific function within the circuit, which helps control the flow of current and ensures stable performance.

2. What is the operating temperature range of the BC817-40-7-F?

The BC817-40-7-F is designed to work effectively within a temperature range of -65°C to 150°C. This wide range allows it to operate reliably in various environments, from cold conditions to higher temperatures, without affecting performance.

3. What is the main feature of the BC817-40 transistor?

The BC817-40 is a 45V NPN small signal transistor, ideal for switching and amplifier applications. It’s housed in an SC-59/SOT23 package, which makes it suitable for compact designs while providing steady, dependable performance across different uses.