REF: Reference Dimension, usually without tolerance, for information purposes only.

BSC: Basic Dimension. Theoretically exact value shown without tolerances.

1.

2.

3.

Notes:

Pin 1 visual index feature may vary, but must be located within the hatched area.

Package is saw singulated

Dimensioning and tolerancing per ASME Y14.5M

For the most current package drawings, please see the Microchip Packaging Specification located at

http://www.microchip.com/packaging

Note:

© 2017 Microchip Technology Inc.

Number of Terminals

Overall Height

Terminal Width

Overall Width

Terminal Length

Exposed Pad Width

Terminal Thickness

Pitch

Standoff

Units

Dimension Limits

A1

A

b

E2

A3

e

L

E

N

0.50 BSC

0.152 REF

1.20

0.35

0.18

0.50

0.00

0.25

0.40

1.30

0.55

0.02

3.00 BSC

MILLIMETERS

MIN

NOM

8

1.40

0.45

0.30

0.60

0.05

MAX

K-

0.20

-

Terminal-to-Exposed-Pad

Overall Length

Exposed Pad Length

D

D2

1.40

2.00 BSC

1.50

1.60

Microchip Technology Drawing C04-21355-Q4B Rev A Sheet 2 of 2

8-Lead Ultra Thin Plastic Dual Flat, No Lead Package (Q4B) - 2x3 mm Body [UDFN]

Atmel Legacy YNZ Package

ATTPM20P

Package Drawings

Datasheet Summary

DS40002082A-page 14