20

Atmel | SMART SAM R21 [PRELIMINARY DATASHEET SUMMARY]

Atmel-42223AS–SAM-R21_Summary–07/2014

8.3

Soldering Profile

The following table gives the recommended soldering profile from J-STD-20.

A maximum of three reflow passes is allowed per component.

SVNREVISION

Profile Feature

Green Package

Average Ramp-up Rate (217°C to peak)

3°C/s max

Preheat Temperature 175°C +/-25°C

150-200°C

Time Maintained Above 217°C

60-150s

Time within 5°C of Actual Peak Temperature

30s

Peak Temperature Range

260°C

Ramp-down Rate

6°C/s max

Time 25°C to Peak Temperature

8 minutes max