SOT-363 (SC-88) Component Package

Geoffrey Hunter

mbedded.ninja Author

Overview

A 3D render of the SOT-363 component package.

SOT-363 is used for smaller SMD transistors and MOSFETs (up to 2 per package).

It has a body width of 1.25mm and a length of 2.0mm. This package seems identical to the SOT-323-6. However I have kept this page separate from the SOT-323-6 since I could not find conclusive evidence that they are identical.

Here is a comparison of major dimensions between the SOT-363 and SOT-323-6:

Package	Body Width	Body Length	Total Width	Pitch	Pins
SOT-363	1.25mm	2.0mm	2.1	0.65mm	6
SOT-323-6	1.25mm	2.0mm	2.1	0.65mm	6

Dimensions for the SOT-363 were from NXP¹. Dimensions for the SOT-323-6 were from Analog Devices². All values typical.

Synonyms

• SC-88: JEITA code¹.
• TSSOP6¹

Dimensions

The dimensions of the SOT-363 component package. Image from http://www.diodes.com/.

Footprint (Land Pattern)

A recommended footprint (land pattern) for the SOT-363 component package. Image from http://www.diodes.com/.

Thermal Resistance

• $R_{\theta JA} = 435^{\circ}/W$ (FR-4, single-sided, 1oz. copper, minimum recommended pad layout)
• $R_{\theta JA} = 330^{\circ}/W$ (FR-4, double-sided, 2oz. copper, 1 inch square copper pad layout)
• $R_{\theta JC} = 139^{\circ}/W$

Polarity

Some components using the SOT-363 package do not require any polarity marking as the pins are rotationally symmetric. This is a common configuration for a two-device MOSFET component, in where the pinout is shown below:

Internal schematic of a dual-MOSFET component in a SOT-363 package. Notice it is not polarity sensitive. Image from http://www.diodes.com/.

Similar To

• SOT-323

Footnotes

1. NXP (2018, May 9). SOT363 - plastic, surface-mounted package; 6 leads; 0.65 mm pitch; 2mm x 1.25 mm x 0.95 mm body. Retrieved 2024-04-19, from https://www.nxp.com/docs/en/package-information/SOT363.pdf. ↩ ↩² ↩³

2. Analog Devices. SC6 Package - 6-Lead Plastic SC70. Retrieved 2024-04-19, from https://www.analog.com/media/en/package-pcb-resources/package/pkg_pdf/ltc-legacy-sc-70/sot_6_05-08-1638.pdf. ↩