31 

AEM, Inc. 
11525 Sorrento Valley Rd., San Diego, CA92121, USA 
Phone: (858)481-0210, Fax: (858)481-1123 

Recommended PC Board Land Patterns 

Recommended Temperature Profiles for Soldering 

Recommended Temperature Profile

for Wave Soldering 

250°C

150°C

60 Seconds Min.

Preheat 100 Seconds Max.

Soldering

10 Seconds Max.

Natural 
Cooling

Recommended Temperature Profile

for Reflow Soldering 

230°C

150°C

60 Seconds Min.

Preheat 100 Seconds Max.

Soldering

10 Seconds Max.

Natural 
Cooling

200°C

20 Seconds Max.

L

 

G

 

H 

Chip Size

 

L mm (inch)

 

G mm (inch)

 

H mm (inch) 

0402(1005)

 

1.3 (0.051)

 

0.4 (0.016)

 

   0.5 (0.020)

 

0603(1608)

 

2.6 (0.102)

 

0.6 (0.023)

 

   0.8 (0.031)

 

0805(2012)

 

3.0 (0.118)

 

1.0 (0.039)

 

   1.0 (0.039)

 

1206(3216)

 

4.4 (0.173)

 

2.2 (0.087)

 

   1.4 (0.055)

 

1806(4516)

 

5.5 (0.217)

 

3.0 (0.118)

 

   1.4 (0.055)

 

Land Patterns and Soldering  
Temperature Profiles