Stk403-070 Circuit Diagram Jun 2026

: Always verify supply rail voltages before power-on; a faulty rectifier bridge sending excessive voltage will instantly fry the IC.

+VCC (+40V) │ ├─── C3 (100µF/63V) ─────┐ │ │ │ │ ▼ │ Pin 4 (V+) │ │ │ │ │ Input ──┬── R1 (1k) ──┬─ C1 (1µF) ── Pin 1 (Non-inv In) │ │ GND GND Pin 2 (V-) │ ├─── C4 (100µF/63V) ─────┐ │ │ ▼ │ -VCC (-40V) │ │ Pin 3 (GND) ────────────┤ Ground plane │ Pin 5 (Output) ──┬─ R2 (0.22Ω/5W) ──┬─ L1 (2µH) ──┬─ To Speaker (+) │ │ │ └─ C2 (0.1µF) ──────┘ │ │ Speaker (-) ────────────────────────┘ stk403-070 circuit diagram

A standard application circuit for the STK403-070 requires several external components to ensure stable operation and protection: Input Stage : Always verify supply rail voltages before power-on;

A complete amplifier implementation based on the STK403-070 schematic generally includes several key sections: and speaker systems.

The STK403-070 is a power amplifier IC (Integrated Circuit) designed by Sanyo (now part of ON Semiconductor). It's a popular and reliable component used in various audio equipment, including amplifiers, receivers, and speaker systems.