Description
High-Fidelity 25W Stereo Audio Power Amplifier Module
The STK4141II is a classic thick-film hybrid integrated circuit from Sanyo's legendary STK series. This 2-channel module is designed for split power supply audio applications, delivering a stable 25W + 25W stereo output. It is the perfect replacement part for mid-sized vintage receivers, bookshelf stereo systems, and integrated amplifiers.
As part of the "Series II" line, this IC is engineered for low harmonic distortion (THD 0.4%) and features a built-in muting circuit to suppress "pop" noises during power-on and power-off sequences.
Key Technical Features:
- Continuous Power Output: 25W + 25W (at 8Ω, THD = 0.4%)
- Configuration: 2-Channel Stereo (18-Pin SIP Package)
- Frequency Response: 20Hz to 50kHz
- Operating Voltage: Recommended ±26V (Maximum ±39V)
- Built-in Features: Internal muting transistor and thermal protection.
Installation & Safety:
For maximum longevity, the STK4141II must be mounted to a clean, flat heatsink using high-quality thermal compound. Proper heat dissipation is critical; operating the module without a heatsink—even for testing—will result in immediate and permanent internal damage.
Compatibility Note: This module is a direct replacement for the NTE1344 and is pin-compatible with other modules in the STK4102II family.