Limited Stock

STMicroelectronics VN0300D N-Channel Enhancement Power MOSFET TO-220 Tested PASS

MOSFETs • SKU RF-MOS-VN0300D-001

$9.99

The STMicroelectronics VN0300D is a vintage N-channel enhancement-mode power MOSFET manufactured during the early generations of ST power semiconductor production. Housed in the rugged TO-220 package, the device was commonly used in power switching, industrial control systems, motor drivers, relay circuits, power supplies, and various commercial electronic assemblies.

As an obsolete semiconductor, the VN0300D can be valuable for restoring legacy equipment where original parts are no longer manufactured. Its TO-220 package allows easy installation and heatsink mounting for power handling applications.

This RF Boneyard™ example has been individually bench tested using a Peak DCA37 semiconductor analyzer and successfully identified as a functional N-channel enhancement MOSFET. The device exhibited normal threshold voltage characteristics, proper body diode operation, low gate leakage, and no evidence of shorts or junction failure.

Suitable for collectors, restorers, repair technicians, experimenters, and engineers maintaining older electronic systems.

Vintage Semiconductor History

The VN0300D appears to originate from the SGS-Thomson era of semiconductor manufacturing, likely dating from the late 1980s to early 1990s based on its logo style, packaging, and device family characteristics. During this period, power MOSFETs were rapidly replacing traditional bipolar power transistors in many switching, control, and power-management applications, making devices such as the VN0300D representative of an important transition in semiconductor technology.

SGS-Thomson would later become STMicroelectronics, one of the world's largest semiconductor manufacturers. Components from this era helped establish the foundation for the modern power semiconductor industry and can still be found operating in industrial equipment decades after their original production.

The device carries the marking "8343", which is believed to be a production date code or manufacturing lot code from the early production period of this component family. While the exact manufacturing year cannot be confirmed without factory documentation, the logo style and package markings are consistent with vintage SGS-Thomson production from the late 1980s to early 1990s.

Today, original VN0300D devices are considered obsolete semiconductors and are primarily encountered through surplus inventories, equipment teardowns, service stock, and collector-held inventories. Components from this era are often sought by vintage equipment restorers, repair technicians, semiconductor enthusiasts, and collectors interested in the history of electronic component development.

For collectors, the VN0300D represents an authentic example of an early-generation power MOSFET from the formative years of modern semiconductor technology. While originally designed for practical power-switching applications, surviving examples now serve as both useful replacement components and historical artifacts from a significant period in electronic engineering development.

RF Boneyard™ Note: This component represents an authentic piece of early power MOSFET history from the formative years of modern semiconductor technology. Individually tested and verified functional using a Peak DCA37 semiconductor analyzer. Bench Status: PASS.