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.
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 |