What’s TDFN Package?

 

Thin Dual Flat No Leads Package (TDFN) is a very small and thin square-shaped or rectangular surface-mount plastic package with no leads. Instead of leads, it uses metal pads along two sides of the package body for electrical connection to the outside world. It is basically a thinner version of the Dual Flat no-Leads (DFN) package.

Thin Dual Flat No Leads package (TDFN)

Thin Dual Flat No Leads package (TDFN)

 

Typical pad counts range from 6 to 28. The maximum body thickness of packages is 0.8 mm. The long side of typical package bodies range from 2 mm to 8 mm. The pad pitch (distance between pads) used by the packages is usually either 0.4 mm or 0.5 mm, although other pad pitch values are also used.

 

Properties of some Examples
Part Number No. of Pads Body Size Body Thickness Pad Pitch
TDFN-6 6 3 x 3mm 0.75mm 0.95mm
TDFN-8 8 3 x 3mm 0.75mm 0.65mm
TDFN-8 8 2 x 2mm 0.75mm 0.5mm
TDFN-10 10 2 x 3mm 0.75mm 0.5mm
TDFN-10 10 3 x 4mm 0.75mm 0.5mm
TDFN-14 14 3mm x 5mm 0.75mm 0.4mm
TDFN-28 28 4mm x 8mm 0.75mm 0.5mm