FXO-LC52 Series
RoHS Material Declaration
Material Name
Kovar
Component
Content
(mg)
Content
（ｗｔ％）
(CAS Number)
7440-02-0
7440-48-4
7439-89-6
1344-28-1
14808-60-7
1308-38-9
18868-43-4
1309-48-4
1305-78-8
7440-33-7
7439-98-7
7440-02-0
7440-48-4
7440-57-5
7439-89-6
7440-02-0
7440-48-4
7440-22-4
7440-50-8
7429-90-5
7440-21-3
7440-57-5
7440-22-4
Cover
Base
Nickel (Ni)
1.890
3.09%
1.82%
Cobalt (Co)
1.113
Iron (Fe)
3.540
5.78%
Ceramic
Alumina (Al2O3)
35.484
1.733
57.98%
2.83%
Silicon Oxide (SiO2)
Chromium Oxide (Cr2O3)
Molybdenum Oxide (MoO2)
Magnesium Oxide (MgO)
Calcium Oxide (CaO)
Tungsten (W)
0.268
0.44%
0.364
0.59%
0.234
0.38%
0.253
0.41%
+ Metallization
6.290
10.28%
0.32%
Molybdenum (Mo)
0.195
+ Nickel Plating Nickel (Ni)
Cobalt (Co)
0.810
1.32%
0.203
0.33%
+ Gold Plating
Gold (Au)
0.281
0.46%
＋Seal ring
Iron (Fe)
2.438
3.98%
Nickel (Ni)
Cobalt (Co)
Silver (Ag)
Copper (Cu)
Aluminum (Al)
Silicon (Si)
Gold (Au)
1.309
2.14%
0.768
1.25%
＋silver solder
1.191
1.95%
0.210
0.34%
ＩＣ
ＩＣ
0.0021
0.950
0.00343%
1.55%
Gold
0.480
0.784%
0.000343%
Adhesive
Silver (Ag)
Epoxy
0.000210
0.0000700
1.170
0.0001144%
1.91%
Crystal
TOTAL
Crystal
Silicon Dioxide (SiO2)
Silver (Ag)
Nickel (Ni)
Silver (Ag)
Silicon (Si)
14808-60-7
7440-22-4
7440-02-0
7440-22-4
7440-21-3
Electrode
0.019
0.0310%
0.000159
0.00037
0.000125
61.196
0.000260%
0.000605%
0.000204%
100.00%
Adhesive
Page 10 of 15
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