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COMPONENT PACKAGES

SOT-323 Component Package

Date Published:	November 9, 2014
Last Modified:	November 9, 2014

Overview

Name	SOT-323 (Small Outline Transistor 323)
Synonyms	SC-70 (SOT323-3, JEITA) SCx (Analog Devices) SMini3-G1-B (SOT323-3, Panasonic)
Variants	SOT-323-3 (3 lead) SOT-323-5 (5 lead) SOT-323-8 (8 lead)
Similar To	SOT-363
Mounting	SMD
Pin Count	3 (SOT-323-3) 5 (SOT-323-5) 8 (SOT-323-8, SC8)
Pitch	0.50mm (SOT-323-8, SC8) 0.65mm (all other variants)
Solderability	Difficult to solder by hand (but possible).
Thermal Resistance	SOT-323-3: Tja = 380°C/W (mounted on 10x8x0.6mm FR4, still air) SOT-323-8: Tja = 70-90°C/W
Land Area	2.10x2.00mm (4.20mm2)
Height	0.95mm
3D Models	n/a
Common Uses	Diodes (SOT-323-3) Voltage regulators (SOT-323-8)

This package is a little confusing because it shares two common names, the SOT-323-x and the SC-70-x. And it also can have a different pitch (the SOT-323-8, aka SC-70-8 or SC8 has a 0.5mm pitch). It has a lead-pitch double that of the SOT-363.

If the pin number isn’t specified, it is likely to be the 3 pin variant (this is the most common).

Images

Dimensions and recommended land pattern for the SOT-323-5 (SC-70-5) component package.

3D model of the SOT-323-3 (SC-70-3) component package.

3D model of the SOT-323-5 (SC-70-5) component package.

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