TAMURA RMA-20-21 Lead-tin paste
Brief introduction of lead-tin paste characteristics of RMA-20-21 in TAMURA Tamura;
- Welding flux is RMA type without halogen.
- The viscosity will not change with time during continuous printing, and it has good stability.
- It also shows good welding performance on tiny parts with a spacing of 0.3 mm.
- Good welding performance, showing excellent wettability for various parts.
- Viscosity hardly changes with the passage of time.
TAMURA Tamura RMA-20-21 has lead-tin paste specification parameters:
| name of an article | RMA-20-21 | test method |
| Alloy composition (%) | Sn62.8/Pb36.8/Ag0.4 | JIS Z 3282(1986) |
| Melting point (℃) | 179-183 | DSC determination |
| Solder particle size (μm) | 20~38 | Laser analysis |
| Tin powder shape | sphericity | JIS Z 3284(1994) |
| Flux content (%) | 9.5±0.3 | JIS Z 3284(1994) |
| Halogen content (%) | 0.0 | JIS Z 3197(1994) |
| Viscosity (Pa·s) | 225±25 | JIS Z 3284(1994) |
