| Selection of tin powder | ||||||
Specifications | Maximum limit | Greater than this value less than 1% | Less than 80% between these values | Less than 90 percent | Less than 10% | Recommend suitable process |
| 2 | 80μm | 75μm | 75-45μm | —— | 20μm | pitch≥0.5mm Inner diameter of needle≥0.8mm |
| 3 | 50μm | 45μm | 45-25μm | —— | 20μm | pitch≥0.4mm Inner diameter of needle≥0.6mm |
| 4 | 40μm | 38μm | —— | 38-20μm | 20μm | pitch≥0.4mm Inner diameter of needle≥0.5mm |
| 5 | 28μm | 25μm | —— | 25-15μm | 15μm | pitch≥0.3mm Inner diameter of needle≥0.4mm |
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