Solder Paste
Soldering Paste Combination
| Combination | Name | Temp | Type | Feature |
|---|---|---|---|---|
| Sn99+Ag0.3+Cu0.7 | - | 217 | High | |
| Sn63+Pb37 | 6337 | 183 | Middle | |
| Sn62.8+Pb36.8+Ag0.4 | - | 183 | Middle | |
| Sn42+Bi58 | 4258 | 138 | Low | Fragile |
6337 - 240
| Sn % | Pb % | Ag % | Type | Use | Price | Feature | Melting Temp/Peak |
|---|---|---|---|---|---|---|---|
| 63 | 37 | - | 3(25-45) | for RCL, simple IC 0.5mm pitch | 71 | 183/240 | |
| 63 | 37 | - | 4(20-38) | for RCL, dense IC 0.3-0.5mm pitch | 76 | 183/240 | |
| 63 | 37 | - | 5(15-30) | for RCL, a lot dense IC 0.3mm pitch | 80 | 183/240 | |
| 62.9 | 36.9 | 0.2 | 4(20-38) | for QFN type parts PCB | 79 | 183/240 | |
| 62.8 | 36.8 | 0.4 | 4(20-38) | for BGA type parts PCB | 84 | more better conductibility | 183/240 |
| 55 | 45 | - | 3(25-45) | for LEDs, LED strip, etc | 60 | ? | |
| 60 | 40 | - | 3(25-45) | better than above for LEDs, etc | 68 | ? |
3-4
5-6
7-8
4258
| Sn % | Bi % | - |
|---|---|---|
| 42 | 58 | - |
| Example | Example | Example |