2N442 datasheets – compare manufacturers

Manufacturer	Part Number	Description
Microsemi	2N4427	RF & MICROWAVE DISCRETE LOW POWER TRANSISTORS
STMicroelectronics	2N4427	Silicon Planar NPN Transistor
Motorola Semiconductor	2N442	PNP Transistor
Central Semiconductor	2N4424	SILICON NPN TRANSISTORS
NXP Semiconductors	2N4427	Silicon planar epitaxial overlay transistors
Central Semiconductor	2N4427	SILICON NPN RF TRANSISTOR
ETC Unknown Manufacturer	2N4424	SILICON TRANSISTORS
ASI	2N4427	NPN SILICON HIGH FREQUENCY TRANSISTOR
Motorola Semiconductor	2N4427	HIGH FREQUENCY TRANSISTOR
Advanced Power Technology	2N4427	RF & MICROWAVE DISCRETE LOW POWER TRANSISTORS
Advanced Semiconductor	2N4428	NPN SILICON HIGH FREQUENCY TRANSISTOR
Advanced Semiconductor	2N4429	NPN SILICON RF POWER TRANSISTOR
Motorola Semiconductor	2N4428	NPN SILICON RF POWER TRANSISTOR