Semiconductor IC Packages 3 pins

SOT-23 3-Pin Package

SOT-23 is the most common small SMD package for transistors (BC847, MMBT2222), small MOSFETs, diodes, and voltage references. The tiny 3-pin package is ubiquitous in modern electronics design.

// connector diagram 3 pins

// loading diagram...

// Specifications

Standard

JEDEC TO-236 SOT-23

Pins

Pitch

0.95mm

Body

2.9 x 1.3mm

Common ICs

BC847 MMBT2222 MMBT3904 BAT54 2N7002 MOSFET

Package

SMD surface mount tiny

// Pin Reference Table

Pin	Name	Function	Type
1	Pin 1	Varies: Base/Gate/Anode	I/O
2	Pin 2	Varies: Emitter/Source/Cathode	I/O
3	Pin 3	Varies: Collector/Drain	I/O

SOT-23 is the most common small SMD package for transistors (BC847, MMBT2222), small MOSFETs, diodes, and voltage references. The tiny 3-pin package is ubiquitous in modern electronics design.