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- Part Number 2N2945A
- Manufacturer Microchip
- Pin Count 3
- Part Category Transistor BJT PNP
- Package Category Other
- Footprint Name Other - TO-46 (TO-206AB)
- Released Date Dec 1, 2024
- Last Modified Date Dec 1, 2024 10:22 AM UTC
- Pinout / Pin List Click Here (Member Only)
2N2945A Details
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Manufacturer Part Number:
2N2945A
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Part Life Cycle Code:
Active
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Country Of Origin:
Philippines
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ECCN Code:
EAR99
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Manufacturer:
Microchip Technology Inc
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YTEOL:
23
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Collector Current-Max (IC):
0.1 A
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Collector-Emitter Voltage-Max:
20 V
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Configuration:
SINGLE
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DC Current Gain-Min (hFE):
70
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JEDEC-95 Code:
TO-46
2N2945A Frequently Asked Questions (FAQs)
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The recommended PCB layout for the 2N2945A is to keep the input and output pins as close as possible to the device, and to use a solid ground plane to reduce noise and EMI. Additionally, it's recommended to use a 10uF capacitor between the VCC and GND pins to filter out noise.
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To ensure the 2N2945A is properly biased, make sure to connect the VCC pin to a stable voltage source between 4.5V and 18V, and the GND pin to a solid ground plane. Also, ensure that the input voltage (VIN) is within the recommended range of 4.5V to 18V, and that the output voltage (VOUT) is within the recommended range of 1.2V to 15V.
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The maximum current the 2N2945A can handle is 1.5A. However, it's recommended to derate the current to 1A or less to ensure reliable operation and to prevent overheating.
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To protect the 2N2945A from overvoltage and undervoltage conditions, use a voltage regulator or a voltage supervisor to ensure that the input voltage (VIN) is within the recommended range. Additionally, consider using a TVS (Transient Voltage Suppressor) diode or a Zener diode to clamp the input voltage to a safe level.
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The thermal resistance of the 2N2945A is typically around 30°C/W (junction-to-ambient) and 10°C/W (junction-to-case). This means that for every watt of power dissipated, the junction temperature will rise by 30°C (or 10°C) above the ambient temperature.
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2N2945A Overview
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About Microchip
Microchip Technology Inc. is a leading manufacturer of microcontrollers and semiconductor devices for a wide range of applications in the aerospace, automotive, consumer electronics, industrial, and medical industries. Alongside a comprehensive product portfolio, Microchip Technology Inc. also provides easy-to-use development tools that enable engineers to create optimal designs quickly with minimal iterations to reduce risk while lowering total system costs to market. Headquartered in Chandler, Arizona, th