| Items |
|
Representative
Values |
|
Test Methods,
Remarks |
| Metal
Article Number |
31 |
32 |
38 |
37 |
33 |
83 |
|
| Metal
Type |
Sn |
96.5% |
93.0% |
92.0% |
88.0% |
91.4% |
89.0% |
|
| Ag |
3.0% |
3.5% |
3.5% |
3.5% |
3.2% |
|
|
| In |
|
3.0% |
4.0% |
8.0% |
2.7% |
|
|
| Bi |
|
0.5% |
0.5% |
0.5% |
2.7% |
3.0% |
|
| Cu |
0.5% |
|
|
|
|
|
|
| Zn |
|
|
|
|
|
8.0% |
|
| Melting
point (°C) |
219 |
214 |
211 |
206 |
210 |
199 |
|
| Specific
gravity |
7.4 |
7.4 |
7.4 |
7.5 |
7.5 |
7.3 |
|
| Intensity
kgf/mm2 |
3.6 |
5.1 |
5.2 |
6.5 |
7.8 |
7.1 |
|
| Elongation
(%) |
38 |
33 |
32 |
30 |
17 |
23 |
|
| Flux
type |
LF4 |
LF3 |
FH1 |
LF3 |
LF3 |
LZ1 |
|
| Flux
content(%) |
12.0 |
10.7 |
12.0 |
10.7 |
10.7 |
13.0 |
JIS Z 3197 |
| Dryness |
Chalk
powder can be removed easily |
JIS Z 3197 |
| Halide
content(%) |
0.20 |
0.20 |
0.30 |
0.20 |
0.20 |
0.20 |
JIS Z 3197 |
| Corrosiveness
(Copper board) |
Accepted |
JIS Z 3197 |
| Resistivity
of water extract (ohm.cm) |
1
X 105 or more |
JIS Z 3197 |
| Surface
insulation resistance(ohm) |
1
X 108 or more |
JIS Z 3197 |
| Migration
test |
ohm |
1
X 1011 or more |
JIS Z 3197 |
Visual check
with microscope |
No
corrosion, no migration |
JIS Z 3197 |
| Spreading
rate (%) |
80
or more |
JIS Z 3197 |
| Particle
shape |
Sphere |
|
| Powder
size (µm) |
10
~ 50 |
|
| Viscosity
(Pa.s) |
160 |
200 |
200 |
200 |
200 |
200 |
Malcolm viscometer
PCU-2type |
| Min.
pitch of printing |
0.25mm |
The minimum
interval causing no bridge after 25 continuous printing |
| Tackiness
force |
100gf
or more |
Measured by
RESCA Tackiness tester, after exposing 24hrs |
| Slump
test |
0.2mm
or under |
JIS Z 3197 |
| Solder ball
test |
At room temperature |
50µm
or more (0 balls) and 10 to 49µm (10 balls) |
Observation
with microscope X50 after storing at 25°C for 72 hours,
printing 6.25ø and reflow. |
| Change
in characteristic with time when the paste is left at
room temperature |
Viscosity |
Within
± 10% of the change rate from the initial value |
Malcolm PUC-2
type at 25°C measurement after 14 days |
| Viscosity recovery
rate |
75%
or more |
Malcolm PUC-2
type at 25°C measurement after 14 days |
| Ball |
50µm
or more (0 balls) and 10 to 49µm (20 balls) |
Observation
with microscope X50 after printing 6.25ø and reflow
using viscosity tested oaste. |
| Change
in characteristic with time when the paste is left in
cold refrigerator |
Viscosity |
Within
± 10% of the change rate from the initial value |
Malcolm PUC-2
type at 5°C measurement after 90 days |
| Viscosity recovery
rate |
75%
or more |
Malcolm PUC-2
type at 5°C measurement after 90 days |
| Ball |
50µm
or more (0 balls) and 10 to 49µm (20 balls) |
Observation
with microscope X50 after printing 6.25ø and reflow
using viscosity tested oaste. |
| Viscosity
qualities after forced stirs due to 5-time continuous
auto measurement |
Within
± 10% of the change rate from the initial value |
5-time continuous
measurement with the Malcolm viscometer |
