Height: Wide: Depth: 3.8mm 23mm 18.5mm -Overcurrent protection and monitoring temperature rise.Protect the peripheral circuit, when the low voltage power supply. -International Rectifier High Performance Class-D amplifier IC IR4301 is adopted. -The IR4301, PQFN package, has been implemented in a high density of small boards 23x18.5mm. -Maximum output : 160W (load 4ohm, 1kHz, THD = 10%) Differential PWM power CMOS op amp Output current supply over 5A continuous Oscillation frequency variable range 350kHz to 500kHz Protection Overcurrent protection, reduced voltage, heating protection