Ohmic silver paste performance indicators:
1. Ohmic contact resistance: ≤ 2%;
2. High voltage and high current capability: no electrode arcing;
3. Store at room temperature for 1000 hours △ R / R: ≤ 2%;
4. boil for 24 hours △ R / R: ≤ 8%;
5. Adhesion: Pull with scotch tape, no film layer falling off;
6. Square resistance (mΩ/□): ≤50
Surface silver paste, welding silver paste performance indicators:
1. High voltage and high current capability: no electrode arcing;
2. Store at room temperature for 1000 hours △ R / R: ≤ 2%;
3. boil for 24 hours △ R / R: ≤ 7%;
4. Adhesion: vertical tensile force ≥ 1.5Kg;
5. Square resistance (mΩ/□): ≤5