Stk413-430 Circuit Diagram Upd

1. Pin Configuration (Single in-line package)

| Pin | Name | Description | |-----|-------------|---------------------------------| | 1 | +Vcc (R) | Right channel positive supply | | 2 | Out (R) | Right channel output | | 3 | GND (R) | Right ground | | 4 | -Vcc (R) | Right negative supply | | 5 | Bootstrap R | Bootstrap capacitor for right | | 6 | NF (R) | Negative feedback right | | 7 | Input R | Right channel signal input | | 8 | GND (signal)| Signal ground | | 9 | Input L | Left channel signal input | | 10 | NF (L) | Negative feedback left | | 11 | Bootstrap L | Bootstrap capacitor left | | 12 | -Vcc (L) | Left negative supply | | 13 | GND (L) | Left power ground | | 14 | Out (L) | Left channel output | | 15 | +Vcc (L) | Left positive supply |

Right channel is identical using pins 7, 6, 5, 2, 1, 4, 3. stk413-430 circuit diagram

If you are looking to build a custom amplifier or repair a vintage unit, understanding the circuit diagram and pinout is essential. Overview of STK413-430 Technical Specs Set closed-loop gain with external resistor network: input

Example Bill of Materials (generic)

• STK413/430 module (specific variant per power requirement)
• Electrolytic capacitors: 220–470 µF/50V (2–4)
• Ceramic bypass caps: 0.1 µF (4)
• Input DC-block cap: 1 µF film or 0.47 µF electrolytic
• Resistors: Rin 4.7 kΩ, Rf 47 kΩ, small series resistors 10–100 Ω
• Zobel: 0.1 µF + 4.7 Ω or 0.33–1 Ω + 0.1–0.33 mH
• Output relay for speaker protection
• Heatsink, mounting hardware, fuses

• Set closed-loop gain with external resistor network: input resistor (Rin) and feedback resistor (Rf) from output to inverting input. Typical gains are 20–40 dB; common values: Rin = 2.2–10 kΩ, Rf = 22–100 kΩ (adjust per datasheet recommended topology).
• Place a bypass capacitor in parallel with Rf (few pF–nF) to shape high-frequency response.

• Pin assignments and typical application circuits
• Absolute maximum ratings (supply voltages, power dissipation)
• Typical performance graphs (power vs. THD, frequency response)
• Specific protection features and recommended external components