The 2% Silver (Ag) solder alloy is required when soldering to silver or silver plated components/leads, particularly the Sn62 alloy (Sn62Pb36Ag2 (62/36/2). The small percent of silver in the solder prevents the silver on the leads from migrating into the solder, which would result in a weak or brittle solder connection.
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Related Topics
Source - Kester Solderability Knowledge Base
Nickel Advantages in Tin-Plated Terminals: Surface Contact, Soldering, & Tin Whisker Growth
Fluxing and Cleaning Consideration in Soldering
Good health practices when using Flux
Best Practices for Tinning and Maintaining Your Soldering Iron
Soldering to Gold Over Nickel Surfaces
Applicable Part Numbers
KE1905-ND
KE1912-ND
KE1819-ND
KE1907-ND
KE1906-ND
473-1103-ND
SMD3SW.0202OZ-ND
473-4900-18G-ND
SMD3SW.015100G-ND
SMD3SW.0204OZ-ND
473-1271-ND
SMD3SW.0208OZ-ND
473-1102-ND
SMD3SW.0311LB-ND
NC3SW.0311LB-ND
NC3SW.0201LB-ND
473-1115-ND
SMD3SW.0314OZ-ND
BARSN62PB36AG2-ND
SMD3SW.0201LB-ND
315-SMD-SC-SN62PB36AG2-0.031-1OZ-ND
315-CQ-SS-623602-0.65MM-25000-ND
315-NC3SW.0310.5OZ-ND
315-NC3SW.0200.3OZ-ND
SMD3SW.0318OZ-ND
315-EXB-SN62PB36AG2-ND
SMD3SW.031.7OZ-ND
SMD3SW.020.4OZ-ND
SMD3SW.0311OZ-ND
SMD3SW.0201OZ-ND
SMD3SW.0312OZ-ND
BARSN62PB36AG2-8OZ-ND
2260-WBAR62362-1/2LB2-ND
2260-WBAR62/36/2-ND
117-44-7317-0000-ND
KE1910-ND
KE1911-ND
24-7150-8802-ND
24-7150-0027-ND
KE1913-ND
KE1120-ND
117-44-7150-0000-ND
24-7150-8834-ND
24-7150-8801-ND
24-7150-8809-ND
KE1909-ND
24-7150-0010-ND
24-7150-8806-ND
22-7150-8802-ND
70-1002-0310-ND
70-2102-0310-ND
70-0102-0310-ND
70-0202-0310-ND
70-0102-0410-ND
KE1914-ND
70-1002-0311-ND
70-2102-0311-ND
70-0102-0311-ND
70-0202-0311-ND
70-0102-0411-ND
29-7150-8808-ND
KE1802-ND
473-1116-ND
04-7386-0000-ND
16-7317-0125-ND
24-7150-8814-ND
24-7150-8842-ND
KE1908-ND
26-7150-0060-ND
70-0203-0311-ND
70-2002-0310-ND
92-7150-8800-ND
92-7150-8806-ND
92-7150-8807-ND
92-7150-9702-ND
KE1850-ND
1354222-ND
24-7150-8800
24-7317-9716
24-7150-9702
24-7150-9710
24-7150-9703
4900-454G
SMD3SW.020 2OZ
4900-18G
SMD3SW.015 100G
SMD3SW.020 4OZ
4900P-25G
SMD3SW.020 8OZ
4900-112G
SMD3SW.031 1LB
NC3SW.031 1LB
NC3SW.020 1LB
4900-227G
SMD3SW.031 4OZ
BARSN62PB36AG2
SMD3SW.020 1LB
SMD-SC-SN62PB36AG2-0.031-1OZ
CQ-SS-623602-0.65MM-25000
NC3SW.031 0.5OZ
NC3SW.020 0.3OZ
SMD3SW.031 8OZ
EXB-SN62PB36AG2
SMD3SW.031 .7OZ
SMD3SW.020 .4OZ
SMD3SW.031 1OZ
SMD3SW.020 1OZ
SMD3SW.031 2OZ
BARSN62PB36AG2-8OZ
WBAR62362-1/2LB2
WBAR62/36/2
44-7317-0000
24-7317-9710
24-7317-9713
24-7150-8802
24-7150-0027
24-7317-9718
24-7150-0018
44-7150-0000
24-7150-8834
24-7150-8801
24-7150-8809
24-7317-9700
24-7150-0010
24-7150-8806
22-7150-8802
70-1002-0310
70-2102-0310
70-0102-0310
70-0202-0310
70-0102-0410
24-7317-9727
70-1002-0311
70-2102-0311
70-0102-0311
70-0202-0311
70-0102-0411
29-7150-8808
83-7145-0415
4900-35G
04-7386-0000
16-7317-0125
24-7150-8814
24-7150-8842
24-7150-9727
26-7150-0060
70-0203-0311
70-2002-0310
92-7150-8800
92-7150-8806
92-7150-8807
92-7150-9702
92-7150-9703
1354222
Sn62Pb36Ag2 (62/36/2)