- Datasheet Download Datasheet
- Stock & Prices $ Price & Stock for BF421
- Part Number BF421
- Manufacturer NXP
- Pin Count 3
- Part Category Transistor BJT PNP
- Package Category Other
- Footprint Name Other - SOT54_2021
- Released Date Apr 6, 2021
- Last Modified Date Mar 7, 2023 4:10 PM UTC
- Pinout / Pin List Click Here (Member Only)
BF421 Details
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Manufacturer Part Number:
BF421
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Rohs Code:
Yes
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Part Life Cycle Code:
Obsolete
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Part Package Code:
TO-92
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Package Description:
PLASTIC, SC-43A, 3 PIN
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Pin Count:
3
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ECCN Code:
EAR99
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Manufacturer:
NXP Semiconductors
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YTEOL:
0
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Collector Current-Max (IC):
0.05 A
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Collector-Base Capacitance-Max:
1.6 pF
BF421 Frequently Asked Questions (FAQs)
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The maximum operating frequency of the BF421 is 80 MHz, but it can be overclocked to 100 MHz with some limitations.
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The BF421 has multiple clock sources, including an internal oscillator, external crystal oscillator, and PLL. The clock source can be configured using the Clock Management Unit (CMU) registers.
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The BF421 has up to 128 KB of RAM and up to 512 KB of Flash memory, depending on the specific device variant.
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The BF421's DMA controller can be used to transfer data between peripherals and memory without CPU intervention. The DMA controller is configured using the DMA registers and can be triggered by various events, such as interrupts or timer matches.
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The BF421's TrustZone security feature provides a secure environment for executing sensitive code and storing sensitive data. It uses a combination of hardware and software mechanisms to create a secure world and a non-secure world, allowing for secure boot, secure firmware updates, and secure data storage.
Trust Checks
Expert Contribution
System Verified
Community Approved
BF421 Overview
Use the download button to access the BF421 schematic symbol, PCB footprint, and 3D model.
To find more CAD model downloads similar to this part, try a partial part number search
or try a keyword search, such as Small Signal Bipolar Transistors
About NXP
NXP Semiconductors is a leading manufacturer of semiconductor devices with a wide range of semiconductor solutions, including microcontrollers, sensors, connectivity solutions, power management ICs, and security solutions. These products are used in a variety of applications such as automotive, industrial automation, smart homes, mobile devices, and more.
NXP Semiconductors is one of the world’s largest semiconductor companies and is headquartered in Eindhoven, the Netherlands.
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