Introduction
Test conditions are divided into standard conditions and basic conditions. Under standard conditions: temperature 15 ~ 35°C, relative humidity 25% ~ 85%, atmospheric pressure 860mbar to 1060mbar; under basic conditions: temperature 20±3°C, relative humidity 60% ~ 70%, atmospheric pressure 860mbar to 1060mbar. Standard test fixture parameters: input power 3W (4.9V), zero level -dB, mode SPEAKER, potentiometer range 50dB, sweep time 0.5 seconds. Additional content includes frequency response (SPI, curve, IMP curve, THD curve, R&B curve), amplitude test curve, T/S parameters, bill of materials, side cross-section, dimensions, reliability testing (90 ~ 95% RH, 65°C, 25°C, 45hr, 6hrs, 0.5hr), soldering conditions (recommended constant-temperature soldering iron 15 ~ 30W, temperature range 350±10°C, soldering time not exceeding 3 seconds), and packaging.