SMT Solder Powder
SMT Solder Powder
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SMT solder powders are the main products of Huijin’s original company, which ever serviced the global mainstream solder paste manufacturers.
Huijin now has developed an idealized single atomization mechanism technology, which allows much higher product output ratio and better quality assurance.
Both centrifugal atomizing technology and ultrasonic atomizing technology are used to satisfy the different technological requirements of various customers. |
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Normal size and Ultra-fine solder powder products are available.
Compared to these of J-STD-006 and ISO9436 solder powder standards, more strict quality standard was executed in all solder powder production.
●Alloy Specification
|
Specification |
Alloy |
Sol,℃ |
Liq,℃ |
Density, g/cm3 |
|
SAC0307 |
Sn99Ag0.3Cu0.7 |
217 |
217 |
7.3 |
|
SAC105 |
Sn98.5Ag1Cu0.5 |
221 |
221 |
7.3 |
|
SAC305 |
Sn96.5Ag3Cu0.5 |
217 |
217 |
7.5 |
|
SAC405 |
Sn95.7Ag3.8Cu0.5 |
217 |
219 |
7.5 |
|
SnAg3.5 |
Sn96.5Ag3.5 |
221 |
221 |
7.5 |
|
SnBi58 |
Sn42Bi58 |
138 |
138 |
8.6 |
|
SnBiAg1 |
Sn64Bi35Ag1 |
153 |
178 |
8.1 |
|
SnBi57Ag1 |
Sn42Bi57Ag1 |
139 |
140 |
8.7 |
● Particle Size Distribution Specification
|
Grade |
% of weight-nominal size |
||
|
<1% |
>90% |
<10% |
|
|
Type 2.5 |
+63μm |
63-38μm |
-38μm |
|
Type 3 |
+45μm |
45-25μm |
-25μm |
|
Type 4 |
+38μm |
38-20μm |
-20μm |
●Oxygen Content Specification
|
Alloy |
Size Grade |
Total Oxygen
Content，ppm |
Typical Total Oxygen Content Range，ppm |
Referenced Oxide Content，wt% |
|
SAC0307
SAC 105
SAC 305
SAC 405 |
Type 3 |
<100 PPM |
50~70 |
0.04~0.10 |
|
Type 4 |
<100 PPM |
60~80 |
0.05~0.12 |
|
|
SnBi58
SnBi35Ag1 |
Type 3 |
<100 PPM |
50~70 |
0.03~0.10 |
|
Type 2.5 |
<100 PPM |
50~60 |
0.03~0.10 |
*** Oxygen level of other similarly products can also be controlled within these ranges
●Powder Appearance
