Overview
The BC817-40W is a 45 V, 500 mA NPN general-purpose transistor manufactured by Nexperia USA Inc. This transistor is housed in a very small SOT323 (SC70) Surface-Mounted Device (SMD) plastic package, making it ideal for space-constrained applications. The BC817-40W is part of Nexperia’s extensive portfolio of bipolar transistors, which are designed to meet the needs of various industries including automotive, industrial, power, computing, consumer, mobile, and wearables.
Key Specifications
| Type number | Package version | Package name | Size (mm) | Channel type | P tot (mW) | V CEO [max] (V) | I C [max] (mA) | h FE [min] | h FE [max] | T J [max] (°C) | f T [min] (MHz) | Automotive qualified |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| BC817-40W | SOT323 | SC-70 | 2 x 1.25 x 0.95 | NPN | 200 | 45 | 500 | 250 | 600 | 150 | 100 | N |
Key Features
- High current capability: 500 mA
- High voltage rating: 45 V
- Three current gain selections available
- General-purpose switching and amplification
- Small SOT323 (SC70) package for space-saving designs
- Automotive qualified for reliability in harsh environments
Applications
The BC817-40W transistor is versatile and can be used in a wide range of applications across various industries, including:
- Automotive systems: For general-purpose switching and amplification in vehicle electronics.
- Industrial control: In control circuits, power supplies, and other industrial automation systems.
- Consumer electronics: In audio amplifiers, power supplies, and other consumer electronic devices.
- Mobile and wearable devices: Due to its small package size, it is suitable for mobile and wearable electronics.
- Power and computing: In power management circuits and computing hardware.
Q & A
- What is the maximum voltage rating of the BC817-40W transistor?
The maximum voltage rating (V CEO) of the BC817-40W transistor is 45 V.
- What is the maximum current rating of the BC817-40W transistor?
The maximum current rating (I C) of the BC817-40W transistor is 500 mA.
- What package type is the BC817-40W transistor available in?
The BC817-40W transistor is available in the SOT323 (SC70) package.
- What are the dimensions of the SOT323 package?
The dimensions of the SOT323 package are 2 x 1.25 x 0.95 mm.
- Is the BC817-40W transistor automotive qualified?
No, the BC817-40W transistor is not automotive qualified according to the provided specifications.
- What are the typical applications of the BC817-40W transistor?
The BC817-40W transistor is used in general-purpose switching and amplification in various industries including automotive, industrial, consumer electronics, and more.
- What is the minimum current gain (h FE) of the BC817-40W transistor?
The minimum current gain (h FE) of the BC817-40W transistor is 250.
- What is the maximum current gain (h FE) of the BC817-40W transistor?
The maximum current gain (h FE) of the BC817-40W transistor is 600.
- What is the maximum junction temperature (T J) of the BC817-40W transistor?
The maximum junction temperature (T J) of the BC817-40W transistor is 150°C.
- What is the minimum transition frequency (f T) of the BC817-40W transistor?
The minimum transition frequency (f T) of the BC817-40W transistor is 100 MHz.
