SD95-179X is use specialty glass for binder material, conductive silver paste of crystalline silicon cell front paste make with silver powder. It is suited to high square resistance (95 Ohm) wafer and design for High temperature fast burning, also sintering window is wide, and printing is well-adapted.
1）Low Series Resistance is achievable by 95 Ohm; 2）280-300mm/s printing speed line is refined and clear; 3）The ratio is 0.23 and increased the light area; 4）The sintered line collapse is small; 5) Welding pull force is above 3N
Performance specification（original can）
Conducting medium: Refined Silver Particle
Binder material: Thermoplastic plastics and the inorganic binding materials
Solvent: high boiling solvent
Viscosity: 250-350Pa..S (measure by Brookfield HBDV 1+Prime viscometer SC4-14 in 25℃ Celsius
Color: Silver grey
Note: all the data is not guarantee value but reference value.
Silver thread’s resistance value：<0.005Ω/□@ 25micron（square resistance）； Adhesive force：It is suited to lead and lead-free soldering, welding pull force is above 3N.；Contact resistance：Low contact resistance of high sheet resistance silicon wafer is achievable, normal value above 2.4 milliohm resistance.
Must stir well before use, it’d better use specialized planetary stirrer to stir; without it, you could stir slowly by plastic ink knife more than ten minutes, make sure the sizing is mixed; but only for plastic, the rubber can may be cut if use metal knife, then plastic particle will drop in to influence on silk screen working life and printing effect; SR95-178X can use directly, so we advise not to dilute, but it can dilute when the viscosity rise or hard to print by special thinner R-12(less than 0.5%).
Standard CT sintering furnace for sintering：
Drying section four temperature ranges：220℃ 260℃ 300℃ 320℃，Wet material is volatilize completely. Sintering six temperature ranges：420℃ 480℃ 500℃ 550℃ 840℃ 860℃，Sinter front and back. Tape speed：5400mm/minute(reference: KIC temperature and testing graph by tracker). Cleaning:
please use alcohols solvent to clean, such as ethanol and terpilenol.
SR95-178X best if use by is six months after the original can leave the factory by keeping in the temperature between 5℃-25℃. Please pay attention not to make the ink freeze, Keep tight lid when it rarely use, also kept in a cool well ventilated places. Do not carelessly disposed the empty can and dispose it according to the instruction.
user of silver paste must have strict safety guidelines (wear masks, goggles and gloves), should not touch skin for long time. If mistakenly swallowed or Inhale it is harmful, when it happened must give a thorough cleaning and be hospitalized. Do not get close to the fire or inflammable, allow the air to circulate when using.
PE plastics can 2kgs/can, 12kgs/can, and 18kgs/can.
Attached: testing graph for the temperature of actual producing silicon wafer.