Audited Supplier
B01
217-218°c
OEM, ODM
1-2 Weeks
RoHS, ISO 9001, ISO 14001, GB/T 29490
Air Freight
XianYi
Bulk, Waffle Box, Tape and Reel, Film-Wrap Package
SAC305 Preform
Guangzhou
8007002000
Product Description
SAC305 Solder Preforms
Features:
- Melting range 217~218 ºC
- Lead-free solder
- Good mechanical performance
- High fatigue resistance and reliability
- Compatible with regular flux
Description:
Sn-Ag-Cu (SAC) alloys are the most commonly used lead-free solder in electronic assembly. The typical SAC solder, namely SAC305, has high joint strength, good wettability and thermal fatigue property due to moderate silver content. In comparison with Sn63Pb37, SAC305 shows better mechanical performance. Meanwhile, the wettability of SAC305 is better than those of Sn-Cu and Sn-Ag solder. Thus, SAC305 solder has been widely used in reflow soldering and manual soldering.
Solder Composition:
Physical Properties:
Method of Use:
Reflow Profile
Operation Details:
- Picking up:
Use an anti-static tools to pick up the solder to prevent solder contamination and deformation.
- Operating environment:
- Flux Compatibility:
SAC305 solder is compatible with regular no-clean and water-soluble electronic grade fluxes currently.
Dimension Tolerance:
Storage and Product Management:
- Storage
The best storage temperature of this product is 25±5 ºC, and the relative humidity is no higher than 55%RH.
- Product management
Keep container tightly closed when product is not in use.
Safety:
- Please use this product with adequate ventilation and certain personal protection conditions.
- Please do not mix with other toxic chemicals.
List of Common Solders
*Note : In this table, "e" indicates eutectic alloys, "ne" indicates near eutectic alloys and "mp" indicates the melting point of simple substance. Other alloys can be customized for your requirement. For more details please contact us.
Features:
- Melting range 217~218 ºC
- Lead-free solder
- Good mechanical performance
- High fatigue resistance and reliability
- Compatible with regular flux
Description:
Sn-Ag-Cu (SAC) alloys are the most commonly used lead-free solder in electronic assembly. The typical SAC solder, namely SAC305, has high joint strength, good wettability and thermal fatigue property due to moderate silver content. In comparison with Sn63Pb37, SAC305 shows better mechanical performance. Meanwhile, the wettability of SAC305 is better than those of Sn-Cu and Sn-Ag solder. Thus, SAC305 solder has been widely used in reflow soldering and manual soldering.
Solder Composition:
| Element | Wt% |
| Silver (Ag) | 3.0 ± 0.2 |
| Copper (Cu) | 0.5 ± 0.2 |
| Tin (Sn) | Margin |
Physical Properties:
| Product name | Melting point/ºC solid / liquid phase | Density g/cm3 | Resistivity µΩ·m | Thermal conductivity W/m·K | Thermal expansion coefficient 10-6/ºC | Tensile strength Mpa |
SAC305 | 217 / 218 | 7.37 | 0.132 | 58 | 21 | 50 |
Method of Use:
Reflow Profile
| Preheating stage | Heat preservation stage | Soldering stage | Cooling stage |
| Room-temperature ~ 150ºC | 150 ~ 217ºC | 217 ~ 245ºC | 217ºC ~ Room-temperature |
| Time | Time | Time | Cooling rate |
| 60~90s | 120 ~ 150s | 60 ~ 90s | 1 ~ 3ºC/s |
Reflow profile of SAC305 Solder Preforms
(For reference only, the reflow profile should be adjusted according to the actual soldering situation)
(For reference only, the reflow profile should be adjusted according to the actual soldering situation)
Operation Details:
- Picking up:
Use an anti-static tools to pick up the solder to prevent solder contamination and deformation.
- Operating environment:
| Atmosphere | Parameter requirements |
| N2 | Oxygen concentration(200~ 1000ppm) |
| Vacuum | Vacuum degree ≤ 2.0×10-3Pa |
- Flux Compatibility:
SAC305 solder is compatible with regular no-clean and water-soluble electronic grade fluxes currently.
Dimension Tolerance:
| Thickness(t) | Typical tolerances for length, width or diameter(L/W/D) | |
| t <0.40mm | ±0.02mm | |
| 0.40mm≤ t <1.00mm | ±0.03mm | |
| t ≥1.00mm | ±0.05mm | |
| Thickness(t) | Thickness (t) | |
| Conventional solder alloys | Indium alloy | |
| t<0.05mm | ±0.005mm | ±0.01mm |
| 0.05mm≤ t <0. 10mm | ±0.008mm | ±0.01mm |
| 0. 10mm≤ t <0.20mm | ±0.01mm | |
| 0.20mm≤ t <0.40mm | ±0.02mm | |
| 0.40mm≤ t <1.00mm | ±0.03mm | |
| t ≥1.00mm | ±5% | |
Storage and Product Management:
- Storage
The best storage temperature of this product is 25±5 ºC, and the relative humidity is no higher than 55%RH.
- Product management
Keep container tightly closed when product is not in use.
Safety:
- Please use this product with adequate ventilation and certain personal protection conditions.
- Please do not mix with other toxic chemicals.
List of Common Solders
| Category | Products | Solidus(ºC) | Liquidus(ºC) | Density (g/cm3) | Resistivity (μΩ·m) | Thermal Conductivity (W/m ·K) | CTE (10-6/ºC) | Tensile Strength (MPa) |
Solder Metal | In51Bi32.5Sn16.5 | / | 60(e) | 7.88 | 0.522 | / | 22 | 33.44 |
| In66.3Bi33.7 | / | 72(e) | 7.99 | / | / | / | / | |
| Bi50Pb28Sn22 | / | 100(e) | 9.44 | / | / | / | / | |
| In52Sn48 | / | 118(e) | 7.3 | 0. 147 | 34 | 20 | 12 | |
| In50Sn50 | 118 | 125 | 7.3 | 0. 147 | 34 | 20 | 11.86 | |
| Bi58Sn42 | / | 138(e) | 8.56 | 0.383 | 19 | 15 | 55. 16 | |
| Bi57Sn42Ag1 | 138 | 140 | 8.57 | / | / | / | / | |
| In97Ag3 | / | 143(e) | 7.38 | 0.075 | 73 | 22 | 5.5 | |
| Sn43Pb43Bi14 | 144 | 163 | 9.02 | / | / | 24 | 44. 1 | |
| In80Pb15Ag5 | 149 | 154 | 7.85 | 0. 133 | 43 | 28 | 17.58 | |
| Sn53Pb37Bi10 | 150 | 168 | 8.65 | / | / | / | / | |
| Sn70Pb18In12 | 154 | 167 | 7.79 | 0. 141 | 45 | 24 | 36.68 | |
| In100 | / | 157(mp) | 7.31 | 0.072 | 86 | 29 | 1.88 | |
| In70Pb30 | 165 | 175 | 8. 19 | 0. 195 | 38 | 28 | 23.79 | |
| In60Pb40 | 174 | 185 | 8.52 | 0.246 | 29 | 27 | 28.61 | |
| Sn77.2In20Ag2.8 | 175 | 187 | 7.25 | 0. 176 | 54 | 28 | 46.88 | |
| Sn62Pb36Ag2 | / | 179(e) | 8.42 | 0. 145 | 42 | 27 | 44 | |
| Sn63Pb37 | / | 183(e) | 8.4 | 0. 146 | 51 | 25 | 52 | |
| In50Pb50 | 184 | 210 | 8.86 | 0.287 | 22 | 27 | 32.2 | |
| Pb60In40 | 197 | 231 | 9.3 | 0.331 | 19 | 26 | 34.48 | |
| Sn86.9In10Ag3. 1 | 201 | 205 | 7.37 | / | / | / | / | |
| Au10Sn90 | / | 217(e) | 7.78 | / | / | / | 50.2 | |
| SAC387(Sn95.5Ag3.8Cu0.7) | / | 217(ne) | 7.4 | 0. 132 | 57 | 22 | 48 | |
| SAC305(Sn96.5Ag3.0Cu0.5) | 217 | 218 | 7.37 | 0. 132 | 58 | 21 | 50 | |
| Sn96.5Ag3.5 | / | 221(e) | 7.37 | 0. 108 | 33 | 30 | 39 | |
| Sn99.3Cu0.7 | / | 227(e) | 7.31 | / | / | / | / | |
| Sn100 | / | 232(mp) | 7.29 | 0. 111 | 73 | 24 | 13. 1 | |
| Sn65Ag25Sb10 | / | 233(e) | 7.8 | / | / | 36 | 117.2 | |
| Sn95Sb5 | 235 | 240 | 7.25 | 0. 145 | 28 | 31 | 40.7 | |
| Sn90Sb10 | 240 | 250 | 7.22 | / | 42 | 27 | 44 | |
| Pb75In25 | 240 | 260 | 9.97 | 0.375 | 18 | 26 | 37.58 | |
| Pb88Sn10Ag2 | 268 | 290 | 10.75 | 0.203 | 27 | 29 | 22.48 | |
| Pb90Sn10 | 275 | 302 | 10.75 | / | / | 24.6 | 32 | |
| Au80Sn20 | / | 280(e) | 14.52 | 0.224 | 57 | 16 | 276 | |
| Pb92.5Sn5Ag2.5 | 287 | 296 | 11.02 | 0.2 | 29 | 24 | 29.03 | |
| Pb90Sn5Ag3In2 | 294 | 297 | 10.89 | / | / | / | / | |
| Pb92.5In5Ag2.5 | 300 | 310 | 11.02 | 0.313 | 25 | 25 | 31.44 | |
| Au88Ge12 | / | 361(e) | 14.67 | 0. 151 | 44 | 13.4 | 185 | |
| Au96.8Si3.2 | / | 363(e) | 15.4 | / | 27 | 12 | 255 | |
| Au98Si2 | 363 | 390 | 16.92 | / | / | / | / | |
Brazing Metal | Ag60Cu30Sn10 | 600 | 720 | 9.58 | / | / | / | / |
| Ag72Cu28 | / | 780(e) | 10 | / | 352 | 17.8 | 250-360 | |
| Ag50Cu50 | 780 | 870 | 9.67 | / | / | / | / | |
| Au60Ag20Cu20 | 835 | 845 | 13.79 | / | / | / | / | |
| Ag92.5Cu7.5 | / | / | 10.37 | / | / | / | / | |
| Au80Cu20 | / | 910(e) | 15.67 | / | / | / | / | |
| Au50Cu50 | 955 | 970 | 12.22 | / | / | / | / | |
| Ag100 | / | 961(mp) | 10.49 | 0.0163 | 429 | / | 180 | |
| Au100 | / | 1064(mp) | 19.3 | 0.0221 | 318 | 14 | 138 | |
| Cu100 | / | 1083(mp) | 8.96 | 0.0172 | 401 | / | 246 |
